Nikon 50i service manual

R-4758.B

Microscope

ECLIPSE 50i ECLIPSE 55i

Repair Manual Volume-1 NIKON CORPORATION

C 2004 NIKON CORPORATION All rights reserved

R-4758.B

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R-4758

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R-4758.B

Table of Contents Foreword ..................................................................................................................... P.5 Notes for Repair .......................................................................................................... P.5 Safety Precautions ...................................................................................................... P.5 1.

Tools ........................................................................................................................... P.6 1-1. Tools for General Use and Preparations ............................................................... P.6 1-2. Tools for Special Purposes ................................................................................... P.7 1-3. Preparations ......................................................................................................... P.8

2.

Specifications................................................................................................................ P.9 2-1. 50i ......................................................................................................................... P.9 2-2. 55i ....................................................................................................................... P.13

3.

Optical Systems ........................................................................................................ P.20 3-1 50i ....................................................................................................................... P.20 3-2. 55i ....................................................................................................................... P.21

4.

Connection Diagrams ............................................................................................... P.22 4-1. 50i ....................................................................................................................... P.22 4-2. 55i ....................................................................................................................... P.23

5.

Disassembling/Assembling/Adjusting ....................................................................... P.24 5-1. Disassembling/Assembling/Adjusting Flow ......................................................... P.24 5-2. Removing Main Unit ........................................................................................... P.26 5-3. Disassembling/Assembling Elevation Block (For 50i/55i) ................................... P.27 5-3-1 Disassembling ................................................................................................ P.27 5-3-2. Assembling .................................................................................................... P.33 5-4. Disassembling/Assembling Condenser Holder Block (For 50i/55i) ..................... P.42 5-4-1. Disassembling ................................................................................................ P.42 5-4-2. Assembling .................................................................................................... P.46 5-5. Disassembling/Assembling Fine/Coarse Focus Block (For 50i/55i) .................... P.52 5-5-1. Disassembling ................................................................................................ P.52 5-5-2. Assembling .................................................................................................... P.59 5-6. Disassembling/Assembling Field Stop Block (For 50i/55i) .................................. P.68 5-6-1. Disassembling ................................................................................................ P.68 5-6-2. Assembling .................................................................................................... P.71 5-7. Disassembling/Assembling ND Filter Block (For 50i) .......................................... P.75 5-7-1. Disassembling ................................................................................................ P.75 5-7-2. Assembling .................................................................................................... P.77

3

R-4758.B

Table of Contents 5-8. Disassembling/Assembling Lighting Block (For 50i) ........................................... P.79 5-8-1. Disassembling .............................................................................................. P.79 5-8-2. Assembling ................................................................................................... P.82 5-9. Disassembling/Assembling Power Supply Assembly (For 50i) ........................... P.85 5-9-1. Disassembling .............................................................................................. P.85 5-9-2. Assembling ................................................................................................... P.87 5-10. Disassembling/Assembling Brightness Control Board (For 50i) .......................... P.89 5-10-1. Disassembling .............................................................................................. P.89 5-10-2. Assembling ................................................................................................... P.91 5-11. Disassembling/Assembling Seesaw Switch (For 50i) ......................................... P.93 5-11-1. Disassembling .............................................................................................. P.93 5-11-2. Assembling ................................................................................................... P.94 5-12. Disassembling/Assembling Color Compensation Filter Unit (For 55i) ................. P.95 5-12-1. Disassembling .............................................................................................. P.95 5-12-2. Assembling ................................................................................................... P.97 5-13. Disassembling/Assembling Diffuser Unit (For 55i) .............................................. P.99 5-13-1. Disassembling .............................................................................................. P.99 5-13-2. Assembling ................................................................................................. P.100 5-14. Disassembling/Assembling Light Source Unit (For 55i) .................................... P.102 5-14-1. Disassembling ............................................................................................ P.102 5-14-2. Assembling ................................................................................................. P.104 5-15. Disassembling/Assembling Switch Board (For 55i) .......................................... P.106 5-15-1. Disassembling ............................................................................................ P.106 5-15-2. Assembling ................................................................................................. P.108 5-16. Disassembling/Assembling Seesaw Switch (For 55i) ........................................P.110 5-16-1. Disassembling .............................................................................................P.110 5-16-2. Assembling .................................................................................................. P.111 5-17. Stage Tilt Adjustment (For 50i/55i) .....................................................................P.112 5-18. Stage Centering Adjustment (For 50i/55i) ..........................................................P.115 5-19. Condenser Holder Tilt Adjustment (For 50i/55i) .................................................P.117 5-20. Condenser Holder Upper Limit Stopper Position Adjustment (For 50i/55i) ....... P.121 5-21. LED Position Adjustment (For 55i) .................................................................... P.122

4

Foreword

R-4758.B

Foreword 1. This manual is for ECLIPSE 50i and ECLIPSE 55i. Where an item is common for both ECLIPSE 50i and ECLIPSE 55i, “(For 50i/55i)” is included in the title. Where an item is exclusive to either ECLIPSE 50i or ECLIPSE 55i, “(For 50i)” or “(For 55i)” is included in the title. For the Stage and Ergonomic Binocular Tube, refer to the ECLIPSE 50i/ECLIPSE 55i Repair Manual Volume-2. 2. This repair manual has been written to be used as the textbook for the repair training course. This manual is organized so that trainees can understand the mechanical and optical construction of the microscope by practicing repair procedures from the beginning to the end. 3. The table of contents of this manual includes every item that might require repair and can efficiently be used as the guide for repair. 4. Unplug the power cable and wear work-gloves before starting work.

Take extra care to avoid injury from sharp edges or projections and electric shock by touching live components.

Notes for Repair: - Use an appropriate screwdriver for the screw head slot. (Especially take care of the (+) slot head screw). - The plastic parts must be cleaned with a neutral solvent. If an organic solvent (ether, thinner, alcohol, etc.) is used, discoloring or deterioration of the part might occur. - When cleaning the glass parts, take care to remove dust using a blower, etc. and wipe the parts with a lens tissue moistened with alcohol or alcohol-ether mixture.

Safety Precautions WARNING (For ECLIPSE 50i) The lamp and surrounding areas (including the lamp house) become very hot during and immediately after a period of illumination. - To avoid risk of burns, do not touch the lamp or surrounding areas during or immediately after a period of illumination. - Make sure the lamp and surrounding areas have cooled sufficiently before attempting to the replace lamp. - To avoid risk of fire, do not place fabric, paper or highly flammable volatile materials such as gasoline, petroleum benzine, paint thinner or alcohol near the lamp house while the lamp is lit or during a period of around thirty minutes after the lamp has been turned off. - To avoid risk of burns, wait at least thirty minutes after the lamp is turned off to give it sufficient time to cool. 5

1. Tools

R-4758.B

1-1. Tools for General Use and Preparations Tool No

Name

Illustration

Remarks

J21084

Hex-key set

Set (x6)

T91400

(+) Screwdriver set

Set (x4)

T91000

(-) Screwdriver set

Set (x6)

T91204

(+) Wood handle driver

Diameter 6 mm

T91102

(-) Wood handle screwdriver

T91305

Width 5.5 mm φ2.5mm

(+) Screwdriver bit (For JCIS screw M2, M2.6)

φ115mm

90mm

T91320

(+) Screwdriver bit holder

T92041

Tweezers AA

T92162

Compass spanner A

T92163

Compass spanner B

E719

φ8mm

Handlap (Alcohol container)

6

1. Tools

R-4758.B

1-2. Tools for Special Purposes Tool No

Name

Illustration

Remarks

1” reading collimator

Stage tilt adjustment Condenser holder tilt adjustment

J28003

Parallel mirror

Stage tilt adjustment Condenser holder tilt adjustment

J25298

Centering tool

Stage centering adjustment

J25481

80i sub stage tool A


J25299

Centering rod


J28005

7

1. Tools

R-4758.B

1-2. Tools for Special Purposes/Preparations Tool No

Name

Illustration

Remarks

J25295

Standard straight tube

LED position adjustment

J25172

Centering telescope


J25260

Ph tool ring


Spring scale

Torque adjustment

1-3. Preparations Alcohol (or alcohol-ether mixture), Lens tissue, Blower, Gasoline (for cleaning), Bamboo stick (for applying lubricant, adhesive), Brass (or tin) foil, Dial gauge For Lubricant and Adhesive: Refer to Repair Parts Lists (50i: KR-7483.A, 55i: KR-7485.A,)

8

2. Specifications

R-4758.B

2-1. 50i I. Overviews 1. Model Number MBA85010: ECLIPSE 50i, Using halogen lamp as light source L MBA85020: ECLIPSE 50i, Using halogen lamp as light source R

II. Main Items 1. Mounting System - For nosepiece: Square dovetail (compatible with E series) Can be attached and removed using tool. - For eyepiece tube: Round dovetail (compatible with E series) Can be attached and removed using clamp screw. - For intermediate attachments: Eyepiece tube mounting dovetail and main body top surface (Using M4 screw (4 pcs.)) 2. Main Body Top Arm and Stand Blocks - Height from table top to eyepiece mounting surface: 330 mm - Height from table top to stage top: 199 mm - Max. width: 208 mm - Foot: With vibration-proof damper (4 pcs.) 3. Elevation Block - Focusing system/Stage up-down system: Using roller races - Stage up-down stroke: Upward 2 mm/Downward 28 mm - Sub stage and up-down movement guide: DC integrated type - Stage mounting system: Round dovetail (not compatible with E series) - Condenser lens mounting system: Round dovetail (compatible with E series) - Condenser lens up-down stroke: 27 mm - Condenser lens stroke upper limit position: Adjustable (using tool) - Condenser lens centering: 3 mm diameter

9

2. Specifications

R-4758.B

2-1. 50i 4. Coarse/Fine Focus Block - Coarse focus handle: 13.8 mm per rotation (reduction gear ratio: 3) - Fine focus handle: 0.1 mm per rotation (reduction gear ratio: approx. 413) - Minimum reading: 1 micron - Coarse motion handle torque: Adjustable - Refocusing mechanism: With one-touch refocusing mechanism (with operation lever) When the sub stage is lowered to the lower limit position by pushing the lever down, the sub stage is locked to this position. When the sub stage is lowered 2 mm further from this position by pushing the lever down, the lock mechanism is canceled. The sub stage is returned to the former position. The rotary damper controls the return of the sub stage at a constant speed. 5. Lighting Block - Composed of collector lens, field lens (f = 89.7), field stop, and filter - Filter: ND8 (Detachable) - Lemon-skin filter (2 pcs.): Built-in (Not detachable) - Diameter of field stop: 1 to 30 mm diameter (design value: 0.8 to 30.5 mm diameter) - Field stop control: Right-hand side of the microscope base - Filter control: Right-hand side of the microscope base - Additional filter (diameter: 45 mm, thickness: 3 mm): Up to two filters can be attached tilting 5 degrees above the field lens. 6. Light Source Block - Lamp ratings and type: 6V/30W halogen lamp, PHILIPS 5761 - Average lamp life: 100 hours (listed on product brochure) - Lamp house detachable

10

2. Specifications

R-4758.B

2-1. 50i III. Configurations and Functions 1. System Diagram (Described for eyepiece tube, intermediate attachments, nosepiece, stage, Condenser lens, and polarizer)

C-TEP DSC Port

:Option

(MBB76600)

Binocular Tube

Trinocular Tube F

Trinocular Tube T

C-TE Ergonomic Tube

(MBB72100/72105)

(MBB73100/73105)

(MBB73110)

(MBB76500)

J-FL 50i55i Epi-Fluorescence

Teaching Unit F to F

Attachment (MBE84000)

(MBB75100)

Teaching Unit S by S type B

Double Port 0/100 (MBB74105)

(MBB75110)

Double Port Main Teaching Unit

(MBB74100)

（MBB75120） Teaching Unit S by S type A


Magnification Module

（MBB75130） Intermediate Tube w/Simple

(MBB75500)

Analyzer (MBB75370)

Drawing Tube (MBB75400)

Objective Lens (CFI60)

Intermediate Tube

Eyelevel Riser

w/Analyzer (MBB75360)

(MBB75710) Condenser (dry) (MBL12000)

C-N Sextuple Nosepiece (MBP71300)

Condenser (oil) (MBL12001)

J-CY Cytodiagnostic Unit (MBP89000)

A/A Condenser (MBL71400) Swing-out Condenser (MBL11300)

C-SR Left Handle

C-SR Right Handle

Stage (MBC71610)

Stage (MBC71600)

50i Halogen Lamp L (MBA85010) 50i Halogen Lamp R (MBA85020)

Holder 1C (MBC75040) Simple Polarizer C-HL2 Specimen

Holder 2R (MBC75010)

Holder 2L (MBC75020)

(MBL71100) LWD Achromat Condenser (MBL75000)

C-HC1 Specimen

C-HR2 Specimen

Abbe Condenser

(MBB75370) Polarizer with First-order Red Tint Plate (MBB75380)

11

Achromat Swing-out Condenser 1-100X (MBL71300) PH Turret Condenser (MBL73100)

2. Specifications

R-4758.B

2-1. 50i 2. Restrictions (Following products are not installable.) - Condenser lens D-CUD-E Automatic U condensor (dry) (MBL78500) D-CUD U condensor (dry) (MBL78600) - Intermediate attachments D-FL U-EPI Fluorescence (MBE74100) D-DH-E DIH E (MBD76100) D-DH DIH M (MBD76200) - Stage C-SRR Right handle R stage (MBC71500) C-SLR Left handle R stage (MBC71600) D-S-E Automatic XY stage (MBC76100)

12

2. Specifications

R-4758.B

2-2. 55i I. Overviews 1. Model Number MBA85040: ECLIPSE 55i, Using LED as light source L MBA85050: ECLIPSE 55i, Using LED as light source R

II. Main Items 1. Mounting system - For nosepiece: Square dovetail (compatible with E series) Can be attached and removed using tool. - For eyepiece tube: Round dovetail (compatible with E series) Can be attached and removed using clamp screw. - For intermediate attachments: Eyepiece tube mounting dovetail and main body top surface (Using M4 screw (4 pcs.)) 2. Main Body Top Arm and Stand Blocks - Height from table top to eyepiece mounting surface: 330 mm - Height from table top to stage top: 199 mm - Max. width: 208 mm - Foot: With vibration-proof damper (4 pcs.) 3. Elevation Block - Focusing system/Stage up-down system: Using roller races - Stage up-down stroke: Upward 2 mm/Downward 28 mm - Sub stage and up-down movement guide: DC integrated type - Stage mounting system: Round dovetail (not compatible with E series) - Condenser lens mounting system: Round dovetail (compatible with E series) - Condenser lens up-down stroke: 27 mm - Condenser lens stroke upper limit position: Adjustable (using tool) - Condenser lens centering: 3 mm diameter

13

2. Specifications

R-4758.B

2-2. 55i 4. Coarse/Fine Focusing Block - Coarse focus handle: 13.8 mm per rotation (reduction gear ratio: 3) - Fine focus handle: 0.1 mm per rotation (reduction gear ratio: approx. 413) - Minimum reading: 1 micron - Coarse motion handle torque: Adjustable - Refocusing function: Refocusing with a single touch of the lever (with operation lever) When the sub stage is lowered to the lower limit position by pushing the lever down, the sub stage is locked to this position. When the sub stage is lowered 2 mm further from this position by pushing the lever down, the lock mechanism is canceled. The sub stage is returned to the former position. The rotary damper controls the return of the sub stage at a constant speed 5. Lighting Block - Composed of collector lens, field lens (f = 89.7), field stop, and filter - Filter: LA60 (Detachable) - Lemon-skin filter (2 pcs.): Built-in (Not detachable) - Diameter of field stop: 1 to 30 mm diameter (design value: 0.8 to 30.5 mm diameter) - Field stop control: Right-hand side of the microscope base - Filter control: Right-hand side of microscope base - Additional filter (diameter: 45 mm, thickness: 3 mm): Up to two filters can be attached tilting 5 degrees above the field lens. 6. Light Source Block - White LED array (7 LEDs are used.) - Lamp house detachable 7. Electric System - Brightness control dial: Rotary system, located on the right-hand side of the microscope base. - Preset switch: Push-button, located on the right-hand side of the microscope base. - Lithium-ion battery mounting port: Located on the back of the LED array board. - Input connector: Located on the back. - Power connector for Ergo-View cytodiagnostic unit: Located on the back. - Signal connector for Ergo-View cytodiagnostic unit: Located on the back. - Hand-switch connector for Ergo-View cytodiagnostic unit: Located on the back.

14

2. Specifications

R-4758.B

2-2. 55i 7-1

Power Input The microscope uses power from an AC adapter or from a battery, as follows. When the power is supplied from an AC adapter, this has priority over any battery. 1. AC adapter input: Option Input voltage: 12 V/1.5 ADC Specified AC adapter: Manufacturer: ILAN ELECTRONICS LTD Model: F1650K - Rated input voltage: 100 to 240 VAC/1.2 A max. (when inputting 115 VAC), 47 to 63 Hz 2. Specified Lithium-ion rechargeable battery: Option Manufacturer: Nikon: Code: EN-EL1 Rating: 7.4 V/720 mAh Specified battery charger: MH-53 or similar Note: UR-421 (SANYO Electric Co., Ltd) can be used as the equivalent battery charger.

7-2

Power Output (For Ergo-View cytodiagnostic unit) Supply power to Ergo-View cytodiagnostic unit. - DC 12 V/1 A max.: Current limitation (approx. 1A within 1 sec) - DC 12V/0.5 A max.: Continuous supply

7-3

Battery Run Time 1. When Ergo-View cytodiagnostic unit is not used 4.5 hours minimum: When observed continuously at an LED light source at maximum light intensity using a new rated-capacity battery 10 hours minimum: When observed continuously at 40% of the maximum current The following are assumed for this case: - Maximum illuminance using the Ergo-View cytodiagnostic unit with PlanApo40x and a CB filter attached - 4 lx (eyepiece illuminator reading) 2. When Ergo-View cytodiagnostic unit is used (Reference value) Approx. 3.5 hours: Run time at maximum light intensity assuming that the magnification of the Ergo-View cytodiagnostic unit is changed 5 times a minute

7-4. Battery Charge Time (Reference value) Approx. 100 minutes: When a specified battery charger is used 7-5. LOW-Battery Detection “LOW-Battery” is displayed when the battery voltage lowers to 7.13 +/-0.2 V during operation. The Power LED blinks at a cycle of approx. 5 Hz. 15

2. Specifications

R-4758.B

2-2. 55i 7-6. Battery Shutdown Detection When the battery voltage reaches 5.75 +/-0.16 V during operation, the microscope shuts down to prevent the lithium battery from over discharging. It takes 3 to 30 minutes (reference value) from “LOW-Battery” detection for the microscope to shutdown. The time depends mainly on the number of charge/discharge repetition times, ambient temperature, and LED luminance setting. To reboot the microscope, replace the battery with a charged new battery or switch the power source to the AC adapter. 7-6-1.Replacing Battery Remove the lamp house cover and replace the battery in the battery pocket with a new one. 7-7. White LEDs Seven white LEDs NSPW510BS (Nichia Corporation) are used (luminous intensity rank = S or R, color tone rank = b1 or b2, maximum drive current = 22 mA/LED). 7-8. LED Current Variation Range Approx. 0.05 to 22 mA per LED Current variation dynamic range: Approx. 440 times Total current of seven LEDs is controlled at a constant value. Current variation at maximum light intensity: 5% (reference value) 7-9. Brightness Control The LED’s light intensity is adjusted with the master brightness control knob on the operation panel. The current variation characteristics (B characteristics) vary with the master brightness control knob characteristics (A characteristics). When the alternate preset switch is pressed, the light intensity adjustment is switched to the preset brightness control which can be adjusted using a (-) screwdriver through the adjustment hole of the operation panel. The preset brightness control knob is visually set to the neutral position (half of maximum light intensity) at the factory prior to shipping.

16

2. Specifications

R-4758.B

2-2. 55i 7-10. LED Current Control by Varying Magnification of Ergo-View Cytodiagnostic Unit When the magnification of the Ergo-View cytodiagnostic unit is set to a high value, the LED current increases to approx. 3.2 times, which makes the LED brighter. However, the magnification is limited to the maximum LED current 22 mA. The LED current does not depend on the magnification of the Ergo-View cytodiagnostic unit while the preset switch is ON. 7-11. Life of White LED (Reference data) According to the reference data provided by the manufacturer, the relation between LED operating time and light intensity is as shown below. The life of white LEDs is calculated assuming that the light intensity at the beginning of test = 100% and operating time = 8 hours/day, 250 days/year Ambient temperature Ta = 25 °C Ta = 25 °C Ta = 25 °C

Operating current IF = 20 mA IF = 20 mA IF = 10 mA

Operating time 3500 hours 8000 hours 8000 hours

Light intensity 70% 55% 90%

Life of LED 1.75 years 4 years 4 years

7-12. Input/Output Connectors - Input connector for cytodiagnostic unit switch: 3.5 diameter mini-jack Connect the cable of the cytodiagnostic unit hand switch. - Input/output connector for cytodiagnostic unit signal: 3.5 diameter mini-jack Connect the signal cable of the cytodiagnostic unit. Input/output the hand switch signal and magnification signal. - Power output connector for cytodiagnostic unit: DC jack Connect the cytodiagnostic unit power supply cable. Note: The shape of this connector differs from the power input connector. - Power input connector: DC jack Connect the power output plug of AC adapter. 7-13. Indicators - Power ON/OFF indicator LED (Green): Located on the right side operation panel of the microscope base - Lamp house high temperature caution label - Rated current indication seal

17

2. Specifications

R-4758.B

2-2. 55i III. Configurations and Functions 1. System Diagram (Described for eyepiece tube, intermediate attachments, nosepiece, stage, Condenser lens, and polarizer) C-TEP DSC Port

:Option

(MBB76600)

Binocular Tube

Trinocular Tube F

Trinocular Tube T

C-TE Ergonomic Tube

(MBB72100/72105)

(MBB73100/73105)

(MBB73110)

(MBB76500)

J-FL 50i55i Epi-Fluorescence Teaching Unit F to F

(MBB74105)

(MBB75100)

Teaching Unit S by S type B

Double Port 0/100

Double Port (MBB74100)

(MBB75110) Main Teaching Unit


（MBB75120）

Magnification

Teaching Unit S by S type A

Module

（MBB75130）

Drawing Tube (MBB75400)

C-ER Eyelevel Riser (MBB75710)

Objective Lens (CFI60)

A/A Condenser C-N Sextuple

(MBL71400)

Nosepiece Swing-out Condenser J-CY Cytodiagnostic

(MBL11300)

Unit (MBP89000) A/A Condenser (MBL71400) LWD Achromat C-SR Left Handle

C-SR Right Handle

Stage (MBC71610)

Stage (MBC71600)

Condenser 55i LED L （MBA85040） 55iLED R

C-HC1 Specimen

(MBA85050)

Holder 1C (MBC75040)

C-HR2 Specimen

C-HL2 Specimen

Holder 2R (MBC75010)

Holder 2L (MBC75020)

18

Achromat Swing-out Condenser 1-100X (MBL71300)

2. Specifications

R-4758.B

2-2. 55i 2. Restrictions (Following products are not installable.) - Condenser lens D-CUD-E Automatic U condenser (dry) (MBL78500) D-CUD U condensor (dry) (MBL78600) DF condenser (dry) (MBL12000) DF condenser (oil) (MBL12001) PH condenser (MBL73100) - Intermediate attachments D-FL U-EPI Fluorescence (MBE74100) D-DH-E DIH E (MBD76100) D-DH DIH M (MBD76200) C-ISA simple analyzer (MBB75350) C-IA Analyzer (MBB75360) - Stage C-SRR Right handle R stage (MBC71500) C-SLR Left handle R stage (MBC71600) D-S-E Automatic XY stage (MBC76100) - Others Simple polarizer (MBB75310) Polarizer with first-order red tint plate (MDW10200)

19

3. Optical Systems

R-4758.B

3-1. 50i The following optical system is based on the ECLIPSE 50i. The cemented lens surfaces are omitted from the drawing because the lens direction only is of concern here.

Field stop

6V 30W

Diffuser

ND8

20

3. Optical Systems

R-4758.B

3-2. 55i The following optical system is based on the ECLIPSE 55i. The cemented lens surfaces are omitted from the drawing because the lens direction only is of concern here.

Mat surface

Evaporated surface

Field stop

Evaporated surface LED arrays

Mirror Lemon skin

Color compensation filter

21

4. Connection Diagrams

R-4758.B

4-1. 50i

22

4. Connection Diagrams

R-4758.B

4-2. 55i

23

5. Disassembling/Assembling/Adjusting

R-4758.B

5-1. Disassembling/Assembling/Adjusting Flow < ECLIPSE 50i > 26

Removing Stage/Eyepiece tube/Nosepiece/Condenser lens

Elevation Block

29

Fine/coarse focus block

Brightness control board

52

Disassembling/Assembling fine/coarse focus block

Removing fine/coarse focus block 85 Removing power supply assembly

89

Removing brightness control dial 68

67 Removing field stop block

Fine torque adjustment

89

29 Disassembling/Assembling brightness control board

Removing elevation block 29

Condenser holder block

42

ND filter block

Disassembling/Assembling condenser holder

Removing condenser holder

47

30 Disassembling/Assembling elevation block

75

Disassembling/Assembling ND filter block

Knob/rack engaging adjustment

Power supply assembly

85

Removing lamp

34 Roller race movement adjustment

86 Disassembling/Assembling power supply assembly

38 Installing condenser holder

Seesaw switch 38

Installing elevation block

Lighting block 113

79

80 Disassembling/Assembling diffuser

Removing lamp

Stage tilt adjustment

81

80 116

93

Disassembling/Assembling seesaw switch

Disassembling/Assembling collector lens

Removing lighting block


81 Disassembling/Assembling cable with lamp socket

118 Condenser holder tilt adjustment Field stop block 122 Condenser holder upper limit stopper position adjustment

68

70 Disassembling mirror/lens

Removing field stop block 69

39 Installing fine/coarse focus block

74 Cleaning adhesive coating surface of mirror/lens

Disassembling/Assembling blade 72

40

74

Blade mount position adjustment

Elevation block movement check using fine/coarse focus handle

Cementing mirror/lens 72

Installing field stop block 40 Re-focusing mechanism operation check

73 Diaphragm open-shut dial operation check NOTE: The number at upper right of the frame shows the page of this item.

24


R-4758.B

5-1. Disassembling/Assembling/Adjusting Flow < ECLIPSE 55i > 26

Removing Stage/Eyepiece tube/Nosepiece/Condenser lens

Elevation Block

29


Switch board

52

Disassembling/Assembling fine/coarse focus block

Removing fine/coarse focus block 103 Removing control board

107

Removing brightness control dial 68

67 Removing field stop block

Fine torque adjustment 29

107 Disassembling/Assembling switch board

Removing elevation block 29


42 Color compensation filter unit

Disassembling/Assembling condenser holder

Removing condenser holder

47

30 Disassembling/Assembling elevation block

95

Removing color compensation filter unit

Knob/rack engaging adjustment

96 Disassembling/Assembling color filter unit

34 Roller race movement adjustment

Seesaw switch 38 Installing condenser holder 38 Light source Unit

Installing elevation block

111

Disassembling/Assembling seesaw switch

103

Diffuser unit

99

Removing diffuser unit

Removing control board 113 Disassembling/Assembling LED board

Disassembling lens/diffuser

116 105


Installing control board 118

Condenser holder tilt adjustment 122

Field stop block

68

69 Disassembling/Assembling blade

40

40

70 Disassembling mirror/lens

39

Elevation block movement check using fine/coarse focus handle

101 Installing diffuser unit

Removing field stop block

Installing fine/coarse focus block

101 Cleaning adhesive coating surface of mirror/diffuser

123 LED position adjustment

Condenser holder upper limit stopper position adjustment

Re-focusing mechanism operation check

100

104

Stage tilt adjustment

74 Cleaning adhesive coating surface of mirror/lens

72 74

Blade mount position adjustment Cementing mirror/lens 72 Installing field stop block 73 Diaphragm open-shut dial operation check

NOTE: The number at upper right of the frame shows the page of this item.

25


R-4758.B

5-2. Removing Main Unit Before disassembling and assembling the inside mechanisms of the microscope, remove the main unit. This will make it easier to disassemble and assemble the internal parts, and re-adjust the optical system. 1. Eyepiece tube

2. Nosepiece

Loosen the eyepiece clamp screw beneath the eyepiece tube, and remove the eyepiece tube.

Loosen the clamp screw on the side of the nosepiece, and remove the nosepiece.

Nosepiece

Eyepiece tube

Clamp screw

Clamp screw

3. Stage

4. Condenser lens

Loosen the set screw on the front side of the stage using a hex-key, and remove the stage.

Set screw

Loosen the set screw on the condenser receptacle using a hex-key, and remove the condenser lens.

Stage

Set screw

26

Condenser lens


R-4758.B

5-3-1.Disassembling Elevation Block (For 50i/55i) - Disassembling the elevation block is not usually necessary, but if liquid (water etc.) has dropped into the microscope, it should be disassembled. - The two roller races (#A3) fixed to the attaching plate must not to be disassembled at the same time. When reassembling one roller race, the other (assembled) roller race is used as a reference for adjustment. - Some screws are fixed with adhesive. Apply alcohol to melt the adhesive on these screws. WARNING (For ECLIPSE 50i) - When disassembling the elevation block, remove the lamp cover from the lamp house. The lamp and surrounding areas (including the lamp house) become very hot during and immediately after a period of illumination. To avoid risk of burns, do not touch the lamp or surrounding areas during or immediately after a period of illumination. - To avoid risk of fire, do not place fabric, paper or highly flammable volatile materials such as gasoline, petroleum benzine, paint thinner or alcohol near the lamp house while the lamp is lit or during a period of around thirty minutes after the lamp has been turned off. - To avoid risk of burns, wait at least thirty minutes after the lamp is turned off to give it sufficient time to cool.

5-3-1. Disassembling 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the nosepiece. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) While pressing the two portions of the lamp cover (#223) in the arrow directions (a) shown in the photograph, move it in the arrow direction (b) to remove.

Lamp cover (#223)

(a) (a)

27

(b)


R-4758.B

5-3-1.Disassembling Elevation Block (For 50i/55i) 7. In the case of 50i, disconnect the lamp (#227) to prevent damage. 8. Pull out the hexagonal driver (#248). 9. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the plastic cover (#202). 10. Remove the cap (#233). 11. In the case of 50i, remove the power supply assembly. (Refer to Section 5-9.) In the case of 55i, remove the control board of the light source unit. (Refer to Section 5-14.) 12. Place the microscope upside down. 13. Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover.

Plastic cover (#202)

Cap (#233)

Hexagon socket head cap bolts (M3 x 6)(#254) Lamp (#227)

Hexagonal driver (#248) Bottom cover

Special hexagon bolts (M3 x 6) (#239)

Special hexagon bolt (M3 x 6) (#239) Fine/coarse focus block Plastic cover (#411)

14. Remove the two hexagon socket head cap bolts (M3 x 10) (#51), and remove the plastic cover (#411). 15. Insert a (-) 2 mm screwdriver into the spaces on both sides of the plastic cover shown in the photograph to release the lock of the claws. [NOTE] When releasing the lock, take care not to break the claws. Hexagon socket head cap bolts (M3 x 10) (#51)

(-) screwdriver

28

Claws of plastic cover


R-4758.B

5-3-1.Disassembling Elevation Block (For 50i/55i) 16. Hold the fine/coarse focus block firmly by hand, and remove the two hexagon socket head cap bolts (M3 x 12) (#52). Remove the fine/coarse focus block and the plastic cover from the microscope base.

Hexagon socket head cap bolts (M3 x 12) (#52)


17. While holding the elevation block by hand, place the microscope to its original position. [NOTE] Since the fine/coarse focus block is removed, the movement of the elevation block is not fixed. Therefore, when the microscope is placed to its original position, be sure to keep hold of the elevation block.


Elevation block


18. While holding the elevation block firmly by hand so that it does not drop, remove the six hexagon socket head cap bolts (M4 x 16) (#53) to remove the elevation block. 19. Remove the three hexagon socket head cap bolts (M3 x 8) (#442), and remove the condenser holder block.

Condenser holder

29



R-4758.B

5-3-1.Disassembling Elevation Block (For 50i/55i) 20. Remove the two hexagon socket head cap bolts (M3 x 6) (#441) on the front and two hexagon socket head cap bolts (M3 x 8) (#442) on the rear. Remove the plastic cover (#410). Hexagon socket head cap bolts (M3 x 8) (#442)




Hexagon socket head cap bolt (M3 x 12) (#443)

21. Remove a hexagon socket head cap bolt (M3 x 12) (#443) of the stroke limitation screw. 22. Remove the two hexagon socket head cap bolts (M3 x 6) (#441), and remove the plate spring (#412) (with the rubber plate). 23. Remove the two hexagon socket head cap bolts (M3 x 8) (#442), and remove the cap (#415) and rotary damper (#414).

Hexagon socket head cap bolts (M3 x 8)(#442)

(Stroke limitation screw)

Cap (#415), Rotary damper (#414) Plate spring (#412)

24. Tighten a set screw (#452) on the side of the sub body. 25. Remove the two hexagon socket head cap bolts (M3 x 6) (#441), and remove the shaft supporter (#407).



Shaft supporter (#407)

Set screw (#452)

30


R-4758.B

5-3-1. Disassembling Elevation Block (For 50i/55i) 26. While holding the top surface of the rack (#406) by finger, loosen the set screw tightened in step 24. [NOTE] When the set screw is loosened, the rack will pop out by the power of the two coil springs. Be sure to hold the top surface of the rack to prevent injury or damage to the surroundings when the rack pops out.

Set screw (#452)

Rack (#406) Rack (#406)

27. Remove the rack, coil spring (#405), coil spring (#404) and spring guide (#403).

Coil spring (#404) Coil spring (#405) Spring guide (#403)

Sub body

28. Remove the two plate washers from the hole of the sub body. [NOTE] The two plate washers are only installed on some microscope. If they are not installed, go to step 29.

Plate washers (2 pcs)

Sub body

31


R-4758.B

5-3-1. Disassembling Elevation Block (For 50i/55i) 29. Place the elevation block right-hand side down, and fully loosen the four set screws (#447). 30. Remove the four hexagon socket head cap bolts (M3 x 16) (#418), and remove the roller race (#A3) on the left side of the elevation block. Remove the sub body from the elevation Block. [NOTE] When removing the roller race, the cylindrical rollers (12 pcs each on up and lower sides) might fall. Be careful not to lose them. The guide rails (#417) and separators (#408) are also removed at the same time.

Set screws (#447)

Elevation block Sub body

Roller race (#A3)

31. If there is a rusty or worn section on the cylindrical rollers, separator and/or guide rails (#417), replace it with a new one. 32. If there is a rusty section on the mounting surface of the roller races and attaching plate (#402), scrape it using a scraper.

Roller race (#A3)


Mounting surface Attaching plate (#402)

Roller race (#A3)

The disassembly of the elevation block is completed. The disassembled parts should be washed and cleaned.

32


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 5-3-2.

Assembling

1. Paste the two guide rails to the two roller races using lubricant L4010 as a substitute for adhesive. 2. Paste the guide rails to the races on both sides of the sub body using lubricant L4010 in the same way as step 1.

Attaching plate (#402)

Guide rails (#417) Sub body

Roller race (#A3)

3. Apply lubricant L4010 to the roller race on the attaching plate assembled in step 1, and place the separator and twelve cylindrical rollers on the roller race.

Roller race (#A3) Attaching plate (#402)

Cylindrical rollers (12 pcs) (#409) Separator (#408)

Roller race (#A3)

4. Apply lubricant L4010 to the roller race on the sub body, and place the separator and twelve cylindrical rollers on the race. 5. Assemble the sub body to the roller race on the attaching plate, and lightly tighten the roller race with the four hexagon socket head cap bolts (M3 x 16) while pressing it to the sub body. Cylindrical rollers (12 pcs) (#409)

Sub body

Roller race (#A3) Sub body

Separator (#408)


33



R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 6. Move the sub body fully right and left, and adjust the position of the separator so that the edges of the separator and the roller race coincide. Also adjust the position of the separator on the opposite side in the same way. Sub body

Sub body

Roller race (#A3) Roller race (#A3)

Edges of the separator and the roller race are coincided.

Edges of the separator and the roller race are coincided.

7. Move the sub body so that the set screw Set screws (#447) on the attaching plate is adjacent to the cylindrical roller. 8. Tighten the set screw close to the cylindrical roller with the following tightening torque using torque driver. Tightening torque: 1 kg x cm 9. Repeat steps 7 and 8, and tighten the remaining three set screws in the same way. Hexagon socket head Roller race (#A3) 10. Tighten the four hexagon socket head cap cap bolts (M3 x 16)(#418) bolts to fix the roller race. 11. Move the sub body, and check the following: Sub body - The cylindrical roller and separator are still in position. Spring scale - The sub body moves smoothly and lightly without slack. Push the sub body and check, using a spring scale, that 50 to 100g pressure is required to effect movement. If not to meet the specification, repeat steps 7 to 10. [NOTE] When the four hexagon socket head cap bolts securing the roller race are firmly tightened, the sub body sometimes loses its movement. In this case, perform steps 7 to 10 again. 34


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) Apply lubricant

12. Apply adhesive #757 to the threads of the four set screws tightened in steps 8 and 9. 13. After inserting the two plate washers into the 13 mm diameter hole of the sub body, apply lubricant L4010 to the inner surface of the hole. [NOTE] The two plate washers are only installed on some microscope. If the plate washers were present during disassembling, be sure to insert them in this step.

Plate washers (2 pcs)

Sub body

14. Put the spring guide into the hole of the sub body, and insert its tip into the center hole on the spring retainer (#432). [NOTE] Be sure to insert the spring guide tip into the spring retainer hole. 15. Apply a light coating of lubricant L3047 to the whole surfaces of the two kinds of coil springs. 16. Fit the lubricated coil springs into the hole of the sub body. Tip of the spring guide

Spring retainer (#432)

Coil spring (#404)

Coil spring (#405)

Spring guide (#403)

Sub body

Sub body

17. Install the rack to the sub body while fitting the two coil springs into the hole of the rack.

Rack (#406)

[NOTE] Be sure to install the rack in the direction as shown in the photograph.

Two coil springs and spring guide

35

Sub body


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 18. After pushing the rack into the hole so that the edges of the rack and the sub body coincide, lightly tighten a set screw.

Set screw (#452)

Rack (#406)

19. Install the shaft supporter to the sub body while inserting the spring guide tip into the center hole of the shaft supporter, and tighten it using the two hexagon socket head cap bolts (M3 x 6). [NOTE] After tightening the bolts, check again that the spring guide tip is inserted into the spring retainer hole on the opposite side. Shaft supporter (#407)



Tip of the spring guide

(5013_1)

Sub body

20. Loosen the set screw lightly tightened in step 18. [NOTE] When the set screw is firmly tightened, the refocusing function cannot operate.

Loosen this set screw.

36

Tip of the spring guide


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 21. Tighten the hexagon socket head cap bolt (M3 x 12) of the stroke limitation screw. 22. Tighten the plate spring (with rubber plate) using the two hexagon socket head cap bolts (M3 x 6). When tightening, adjust the position of the plate spring so that the edge of the plate spring is parallel to the edge of the boss on the attaching plate. 23. Tighten the cap and rotary damper using the two hexagon socket head cap bolts (M3 x 8). Hexagon socket head cap bolt (M3 x 12) (#443) (Stroke limitation screw)


Make parallel the edges of the plate spring with the boss on the attaching plate.

Plate spring (#412)

Cap (#415) and Rotary damper (#414) Plate spring (#412)




24. Tighten the plastic cover using the two hexagon socket head cap bolts (M3 x 6) on the front and two hexagon socket head cap bolts (M3 x 8) on the rear. Hexagon socket head cap bolts (M3 x 8) (#442) Hexagon socket head cap bolts (M3 x 6) (#441)



37


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 25. Install the condenser holder block, and firmly move it in the direction of the arrow. Tighten it with three hexagon socket head cap bolts (M3 x 8). [NOTE] Be sure to tighten the condenser block while moving it in the direction of the arrow.



26. While holding the elevation block so that it does not drop, tighten it using the six hexagon socket head cap bolts (M4 x 16). [NOTE] Be sure to tighten the bolts while pushing the elevation block in the direction of the arrows. Hexagon socket head cap bolts (M4 x 16) (#53)

Elevation block

Elevation block


27. While holding the elevation block, place the microscope upside down. [NOTE] Since the fine/coarse focus block is removed, the elevation block is not fixed. Therefore, when placing the microscope to the original position, hold the elevation block by hand. 28. Perform the following adjustments: - Stage tilt adjustment (Refer to Section 5-17.) - Stage centering adjustment (Refer to Section 5-18.) - Condenser holder tilt adjustment (Refer to Section 5-19.) - Condenser holder upper limit stopper position adjustment (Refer to Section 5-20.)

38


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 29. Set the elevator and the coarse/fine focus drive in the following assembly positions: [Assembling positions] With the main body turned upside down (photo): ・ Elevator: Lowest position ・ Coarse/fine focus drive: Where the limit screw of the gear contacts the lower limit, as shown in the photograph on the right. (This applies to both right-handle and left-handle designs.)

Limit screw: To be assembled at this position

Bottom view After these adjustments are completed, place the plastic cover under the fine/coarse focus block, and hold these parts by hand firmly. While engaging the gear of the fine/coarse focus block with the rack of the elevation block, insert the two pins on the microscope into the two standard holes on the fine/coarse focus block. Tighten the fine/coarse focus block using the two hexagon socket head cap bolts (M3 x 12). [NOTE] The fine/coarse focus block can be installed to the microscope in both (right and left) directions. Be sure to install it in the same orientation as disassembling. Hexagon socket head cap bolts (M3 x 12) (#52)

Standard holes

Pins


Gear

Rack


Plastic cover

39


R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) [Checking the assembly position of coarse/fine focus drive] When the elevator is at the highest position, its edge should be approximately 1 mm higher than the edge of #402.

1mm

#402

elevator

Lateral view

Edge of #402

Edge of elevator

30. Put the two claws on right and left sides of the plastic cover (#411) into the two longitudinal holes of the plastic cover (#410). 31. Tighten the plastic cover using the two hexagon socket head cap bolts (M3 x 10). Hexagon socket head cap bolts (M3 x 10)(#51)

Claws

Longitudinal holes

32. Tighten the bottom cover using the five special hexagon bolts (M3 x 6).

Bottom cover

Special hexagon bolt (M3 x 6) (#239)

40



R-4758.B

5-3-2. Assembling Elevation Block (For 50i/55i) 33. Return the microscope to the horizontal position. 34. When the coarse focus knob and the fine focus knob are turned, check that the elevation block moves smoothly. 35. When the elevation block is pushed down by hand, check that it moves smoothly. Check that the elevation block is locked when the elevation block is fully pushed down, and that the elevation block is moved upward when the elevation block is pushed down again. 36. In the case of 50i, assemble the power supply assembly. (Refer to Section 5-9.) In the case of 55i, assemble the control board of the light source unit. (Refer to Section 5-14.) 37. In the case of 55i, perform the LED position adjustment. (Refer to Section 5-21.) 38. Tighten the plastic cover using the four hexagon socket head cap bolts (M3 x 6). 39. Install the cap. 40. In the case of 50i, connect the lamp to the lamp socket. 41. Move the lamp cover in the opposite direction of the arrow, and install it to the plastic cover. 42. Install the hexagonal driver to the plastic cover. Plastic cover (#202)

Cap (#233)

Special hexagon bolts (M3 x 6) (#254) Lamp (#227)

Hexagonal driver (#248)

43 44. 45. 46. 47.

Install the stage. (Refer to Section 5-2.) Install the nosepiece. (Refer to Section 5-2.) Install the condenser lens. (Refer to Section 5-2.) Install the objective lens. Install the eyepiece tube. (Refer to Section 5-2.)

41

Lamp cover (#223)


R-4758.B

5-4-1. Disassembling Condenser Holder Block (For 50i/55i) - Disassembling the condenser holder block is not usually necessary, but if liquid (water etc.) has dropped into the microscope, it should be disassembled. - The two dovetails (#437 and #438) fixed to the condenser holder block must not be disassembled at the same time. When re-assembling the dovetail, the other (assembled) dovetail is used as a reference for assembling. - Some screws are fixed with adhesive. Apply alcohol to melt the adhesive on these screws.

WARNING (For ECLIPSE 50i) -

When disassembling the condenser holder, remove the elevation block from the microscope base. Be sure to keep the items described in “WARNING” of the elevation block. (Refer to Section 5-3.)

5-4-1. Disassembling Condenser holder block

1. Remove the elevation block from the microscope base according to the steps 1 to 18 of “Disassembling” in elevation block. (Refer to Section 5-3.) 2. Remove the three hexagon socket head cap bolts (M3 x 8) (#442), and remove the condenser holder block from the elevation block.

3. Loosen the set screw (#446), and pull out the lever (#439). 4. Loosen the set screw (#446), and pull out the knob block of the condenser holder block.


Lever (#439)

Set screws (#446) Knob

42

Condenser holder


R-4758.B

5-4-1. Disassembling Condenser Holder Block (For 50i/55i) 5. Remove the hexagon socket head cap bolt (#445) of the stroke limitation screw. 6. Slide the condenser holder block to remove it from the block (#422).

Condenser holder

Block (#422)

7. Remove the two hexagon socket head cap bolts (M3 x 6) (#441), and remove the dovetail (#437 or #438). [NOTE] When reassembling the dovetail, the other (assembled) dovetail is used as the reference for adjustment.

Dovetail (#438)

Block (#422)

Hexagon socket head cap bolt (#445) (Stroke limitation screw)

Dovetail (#437)


8. If there is a rusty section on the mounting surface of the dovetail and block, scrape it using a scraper.

Disassembling male dovetail (#455) and rack (#456) 9. Remove the two hexagon socket head cap bolts (M3 x 8) (#442), and remove the male dovetail (#455) from the condenser holder block.

Condenser holder

Male Dovetail (#455)

43



R-4758.B

5-4-1. Disassembling Condenser Holder Block (For 50i/55i) 10. Remove the two special hexagon bolts (M3 x 4) (#457), and remove the rack (#456) from the removed male dovetail.

Male Dovetail (#455)

Rack (#456)

Special hexagon bolts (M3 x 4)(#457)

Disassembling condenser receptacle (#421) 11. Remove the set screw (#444). 12. Fully loosen the two knobs (#A6).

Condenser holder

Set screw (#444)

Knobs (#A6)

13. Remove the two hexagon socket head cap bolts (M3 x 6) (#441), and remove the spring retainer (#436). 14. Remove the condenser receptacle (#421) from the condenser holder. [NOTE] The plate spring (#435) is removed at the same time. Spring retainer (#436) Plate spring (#435) Condenser receptacle (#421)

Condenser holder Condenser holder


44


R-4758.B

5-4-1. Disassembling Condenser Holder Block (For 50i/55i) Disassembling knob block

Remove two special washers (#429), Belleville spring (#430) and special washer (#440).

15. Loosen the set screw (#446) fixing the knob (#428). 16. Turn the knob counterclockwise to remove it from the gear (#426).

Knob (#428) Gear (#426)

[NOTE] When removing the knob, the two special washers (#429), Belleville spring (#430) and special washer (#440) might fall. Be careful not to lose them.

Set screw (#446)

17. Remove the shaft supporter (#424) from the gear.

Gear (#426)

The disassembly of the condenser holder block is completed. The disassembled parts should be washed and cleaned.

45



R-4758.B

5-4-2. Assembling Condenser Holder Block (For 50i/55i) 5-4-2. Assembling When the male dovetail, rack, condenser receptacle, and knob were removed, assemble these parts first, and then assemble the condenser holder according to the steps 1 to 13. The assembling procedures for the male dovetail, rack, condenser receptacle and knob are as follows: - Assembling for male dovetail and rack: steps 14 to 17 - Assembling for condenser receptacle: steps 18 to 22 - Assembling for knob: steps 23 to 28 1. Lightly tighten the removed dovetail (#437 or #438) to the block using the two hexagon socket head cap bolts (M3 x 6).

Dovetail (#438)

Block (#422)

2. Insert the male dovetail on the condenser holder to the block. While pushing the two dovetails inside, tighten the two hexagon socket head cap bolts. [NOTE] Move the condenser holder block in the direction of the arrows, and tighten the hexagon socket head cap bolts.

Dovetail (#437)

Hexagon socket head cap bolts (M3 x 6) (#441) コンデンサホルダ Condenser holder

Male dovetail (#455)

Dovetail (#437) Block (#422)

3. Move the condenser holder block in the arrow directions, and check that the condenser holder block moves smoothly and lightly without slack. If the condenser holder block does not move smoothly and lightly without slack, perform step 2 again. 4. Apply lubricant G7826 to the sliding surfaces of the dovetail. 46

Dovetail (#438)


R-4758.B

5-4-2. Assembling Condenser Holder Block (For 50i/55i) 5. Tighten the hexagon socket head cap bolt of the stroke limitation screw.

Condenser holder

Block (#422)

Hexagon socket head cap bolt (#445) (Stroke limitation screw)

6. Install the knob of the condenser holder to the block, and engage the gear of the knob and the rack of the condenser holder block.

Block (#422) ブロック(#422) Knob block

7. Put the rod into the hole of the shaft supporter through the hole of the block. While holding the knob, move the rod in the direction shown in the photograph. The gear should engage firmly with the rack. Check that the condenser holder moves smoothly by turning the knob. If the rotation of the knob is heavy, perform the adjustment again using the rod.

Knob (#428)

Block (#422)

47

Rod



R-4758.B

5-4-2. Assembling Condenser Holder Block (For 50i/55i) 8. Fix the knob using the set screw. Apply adhesive #757 to the screw threads. 9. Install the lever to the block, and tighten it using the set screw. Apply adhesive #757 to the screw threads.

Lever (#439) Lever (#439)

Set screws (#446) Set screws (#446) Knob Knob

10. Install the condenser holder block, and firmly move it in the direction of the arrow. Tighten it with three hexagon socket head cap bolts (M3 x 8) to the elevation block. [NOTE] Be sure to install the condenser block while moving it in the direction of the arrow.

Condenser holder

Condenser holder Condenser holder


11. While holding the elevation block by hand so that it does not drop, tighten it using the six hexagon socket head cap bolts (M4 x 16). [NOTE] Be sure to install the elevation block while pushing it in the direction of the arrows. Hexagon socket head cap bolts (M4 x 16) (#43)

Elevation block

Elevation block


48


R-4758.B

5-4-2. Assembling Condenser Holder Block (For 50i/55i) 12. After the installation is completed, perform the following adjustments. - Stage tilt adjustment (Refer to Section 5-17.) - Condenser holder tilt adjustment (Refer to Section 5-19.) - Condenser holder upper limit stopper position adjustment (Refer to Section 5-20.) 13. After adjustments are completed, assemble the elevation block according to the steps 29 and later of “Assembling” in elevation block. (Refer to Section 5-3.)

Assembling male dovetail (#455) and rack (#456) 14. Tighten the rack to the male dovetail using the two special hexagon bolts (M3 x 4).

雄アリ(#455) Male dovetail (#455)

ラック(#456) Rack (#456)

15. Lightly tighten the male dovetail to the condenser holder using the two hexagon socket head cap bolts (M3 x 8).

Special hexagon bolts (M3 x 4) (#457) Condenser holder

Male dovetail (#455)

49



R-4758.B

5-4-2. Assembling Condenser Holder Block (For 50i/55i) 16. Put the two parallel rods (2 mm diameter) into the grooves of the male dovetail and the holes of the condenser holder. This sets the relative positions of the male dovetail and the condenser holder. 17. Firmly tighten the two hexagon socket head cap bolts lightly tightened in step 15. After tightening the bolts, pull out the two parallel rods. Male dovetail (#455)

2 mm dia. rod

Male dovetail (#455) 2 mm dia. rod

Condenser holder

Condenser holder

Assembling condenser receptacle (#421) 18. Assemble the condenser receptacle and plate spring to the condenser holder.

Plate spring (#435) Condenser Receptacle (#421)

Condenser holder

19. Apply lubricant G7826 to the specified portion of the spring retainer as shown in the photograph. 20. Install the spring retainer to the condenser holder as shown in the photograph, and tighten it using the two hexagon socket head cap bolts (M3 x 6).

Apply lubricant


50



R-4758.B

5-4-2. Assembling Condenser Holder Block (For 50i/55i) 21. Apply lubricant G6053 to the tip of the set screw, and then thread it to the condenser holder. 22. Screw the two knobs, and adjust the position of the condenser receptacle so that it is mostly located in the center of the condenser holder.

Condenser holder

Set screw (#444)

Assembling knob block 23. Apply lubricant L4010 to the specified portion of the gear as shown in the photograph. 24. Insert the gear into the shaft supporter.

Apply lubricant

Gear (#426)

25. Apply lubricant L4010 to the end of the shaft supporter. 26. Apply lubricant L4010 on both surfaces of special washer (#440), special washer (#429), Belleville spring (#430) and special washer (#429), and install them to the shaft of the gear in order. 27. Screw the knob to the gear shaft until it stops. [NOTE] Take care not to pinch the washers assembled in step 26.

Knob (#A6)


Insert special washer (#440), special washer (#429), Belleville spring (#430) and special washer (#429) in order. Knob (#428) Gear (#426)

Set screw (#446)

28. Tighten the set screw to fix the knob with the gear. After tightening the set screw, apply adhesive #757 to the screw threads.

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R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 5-5-1. Disassembling -

Some screws are fixed with adhesive. Apply alcohol to melt the adhesive on these screws. The following steps 1) to 8) describe the procedure with the fine/coarse focus block installed to the microscope. But steps 1) to 8) can also be performed when the fine/coarse focus block has been removed.

1. Remove the fine focus handle cover (#325).

Fine focus handle cover (#325)

2. Remove the circular nut (#302), and then turn the fine motion handle (#324) counterclockwise to remove. When removing the fine motion handle, grasp the fine motion handle on the opposite side. Fine motion handle (#324) Circular nut (#302)

3. Remove the Delrin washer (#314), Belleville spring (#313) and Delrin washer (#314) from the fine motion axle (#323).

Remove the Delrin washer (#314), Belleville spring (#313) and Delrin washer (#314).

Fine motion axle (#323)

52


R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 4. Remove the fine motion handle (#303) (with the fine motion handle rubber cap (#301)) on the opposite side from the microscope base. The fine motion axle (#323) is removed at the same time. If replacement of the fine motion handle or the fine motion axle is required, replace these parts after removing the fine motion handle rubber cap (#301) and circular nut (#302).

Circular nut (#302)

Fine motion axle (#323)

Fine motion handle (#303) (with the fine motion handle rubber cap)

5. Insert a hex-key into the specified hole shown in the photograph, and loosen the two set screws (#353) fixing the thrust retainer (#334). 6. Turn the thrust retainer (#334) counterclockwise to remove.

Fine motion handle (#303)

Fine motion handle rubber cap (#301)

Hex-key

Thrust retainer (#334)

7. Remove the Delrin washer (#315) and spacer (#312) from the coarse motion axle (#310).

Remove the Delrin washer (#315) and spacer (#312).

Coarse motion axle (#310)

53


R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 8. Pull out the coarse motion handle (#304) from the microscope. The coarse motion handle with the gear case (#307) and coarse motion axle (#310) are removed. Remove the friction disk (#318) and two wave washers (#316). [NOTE] When removing the coarse motion handle, the ball bearing (#337) may be detached at the same time. Remove the ball bearing using tweezers etc. Check the rotation of the removed ball bearing using tweezers etc. If replacement of the gear case or the coarse motion axle is required, hold the replacement parts firmly, and turn the other parts counterclockwise to remove.

Remove the friction disk (#318) and two wave washers (#316). Coarse motion handle (#304)

Gear case (#307) Coarse motion axle (#310)

Perform the following steps when the fine/coarse focus block is removed from the microscope base. Bottom cover 9. Remove the eyepiece tube. (Refer to Section 5-2.) 10. Remove the objective lens. Special hexagon bolts 11. Remove the condenser lens. (M3 x 6) (#239) (Refer to Section 5-2.) 12. Remove the stage. (Refer to Section 5-2.) 13. Place the microscope upside down. 14. Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover.

54





R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 15. Remove the two hexagon socket head cap bolts (M3 x 10) (#51), and remove the plastic cover (#411). 16. Insert a (-) 2 mm screwdriver into the spaces on both sides of the plastic cover shown in the photograph to release the lock of the claws. [NOTE] When releasing the lock, take care not to break the claws. Hexagon socket head cap bolts (M3 x 10) (#51)

(-) screwdriver

Claws of plastic cover

17. Hold the fine/coarse focus block firmly by hand so that it does not drop, and remove the two hexagon socket head cap bolts (M3 x 12) (#52). Remove the fine/coarse focus block and the plastic cover.

Hexagon socket head cap bolts (M3 x 12) (#52) Fine/coarse focus block

18. Remove the two hexagon socket head cap bolts (M3 x 10) (#352), and remove the gear axle (#327) from the removed fine/coarse focus block.

Gear axle (#327)

Hexagon socket head cap bolts (M3 x 10) (#352) Pinion housing (#305)

55


R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 19. Remove the Teflon washer (#336), gear (#326) and Teflon washer (#336) from the removed gear axle. Remove the hexagon socket head cap bolt (#354) tightened to the gear.

Gear (#326)

Teflon washer (#336)

Gear Gear axle (#327)


20. Remove the pinion (#309) from the pinion housing (#305).

Hexagon Hexagon socket socket head head capcap boltbolt (#354) (#354)

Pinion housing (#305)

Pinion (#309)

21. Turn the torque adjustment ring (#306) counterclockwise to remove it from the pinion housing.

Pinion housing (#305)

56

Torque adjustment ring (#306)


R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 22. Remove the two kinds of ball bearings (#337 and #338) and special washer (#339) from the pinion using tweezers etc. Check the rotation of the removed ball bearings using tweezers etc. [NOTE] - Special washer sometimes remains in the pinion housing. When removing, be very careful. - When removing the coarse motion axle, the ball bearing (#337) is sometimes removed at the same time.

Ball bearing (#338) and special washer (#339)

Ball bearing (#337)

Pinion (#309)

Disassembling gears inside gear case Three hexagon socket head cap bolts (M3 x 8) (#351)

23. Remove the three hexagon socket head cap bolts (M3 x 8), and remove the coarse motion handle (#304).

Coarse motion handle (#304)

24. Remove the two hexagon socket head cap bolts (M3 x 8) (#351), and remove the gear retaining plate (#308).


Gear retaining plate (#308)

57


R-4758.B

5-5-1. Disassembling Fine/Coarse Focus Block (For 50i/55i) 25. Remove the three gears (#319, #320 and #321) from the gear case.

Gear case (#307)

Gear (#319) Gear (#320)

The disassembly of the fine/coarse focus block is completed. The disassembled parts should be washed and cleaned.

58

Gear (#321)


R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 5-5-2. Assembling 1. Fit the ball bearings (#337 and #338) into the pinion.

Ball bearing (#338)

Pinion (#309)

2. Assemble the pinion into the pinion housing.

Ball bearing (#337)

Pinion housing (#305) Pinion (#309)

3. Tighten the hexagon socket head cap bolt (#354) to the gear. 4. Apply lubricant G9110 to both ends of the gear. 5. Apply lubricant G9110 to the specified portions of the gear axle as shown in the photograph, and insert the gear axle into the hole of the gear.

Gear axle (#327)

Hexagon socket head cap bolt (#354)

Apply lubricant

Gear (#326) Apply lubricant

59


R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 6. Apply lubricant G9110 to the two Teflon washers, and insert them to both ends of the gear axle.


Gear (#326)

7. Tighten the gear axle to the pinion housing using the two hexagon socket head cap bolts (M3 x 10).

Teflon washer (#336) Gear axle (#327)

Hexagon socket head cap bolts (M3 x 10) (#352) Pinion housing (#305)

Although the following steps can be performed where the fine/coarse focus block is removed from the microscope base, the following describes the assembling steps where the fine/coarse focus block is attached to the microscope base.

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R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 8. Place the plastic cover under the fine/coarse focus block, and hold these parts by hand firmly. While engaging the gear of the fine/coarse focus block with the rack of the elevation block, insert the two pins on the microscope into the two standard holes on the fine/coarse focus block. Tighten the fine/coarse focus block using the two hexagon socket head cap bolts (M3 x 12). [NOTE] The fine/coarse focus block can be installed to the microscope in both (right and left) directions. Be sure to install it in the same orientation as disassembling. Standard holes

Gear


Pins

Rack Fine/coarse focus block


9. Put the two claws on right and left sides of the plastic cover into the two longitudinal holes of the plastic cover. 10. Tighten the plastic cover using the two hexagon socket head cap bolts (M3 x 10). Hexagon socket head cap bolts (M3 x 10) (#51)

Claws

Longitudinal holes

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R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 11. Tighten the bottom cover using the five special hexagon bolts (M3 x 6).

Bottom cove



Assembling gears to gear case 12. Return the microscope to its original position. 13. Apply lubricant G9110 to both ends of each gear (#320, #321 and #319), and insert them to the gear case in order.

Gear case (#307)

Gear (#319) Gear (#320)

14. Put the gear retaining plate to the gear case so that the slightly curved surface of the gear retaining plate faces to the gear, and tighten it using the two hexagon socket head cap bolts (M3 x 8). [NOTE] When assembling, be sure to install each shaft of the three gears into each hole on the gear retaining plate. After assembling, check that all gears rotate smoothly.

Gear (#321)


Gear retaining plate (#308)

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R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 15. Tighten the coarse motion handle using the three hexagon socket head cap bolts (M3 x 8).


Coarse motion handle (#304)

16. Apply lubricant L3047 to the threads of the pinion housing and torque adjustment ring, and screw the torque adjustment ring to the pinion housing until it stops.

Apply lubricant

Pinion housing (#305) Torque adjustment ring (#306)

17. Apply lubricant L3047 to both surfaces of the two wave washers, and install them to the pinion housing.

Wave washers (#316)

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R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 18. Install the friction disk to the pinion housing. When installing the friction disk, face its four holes outward, and install its protrusion into the key way on the pinion housing.

Protrusion

Four holes

19. Install the coarse motion axle (with coarse motion handle) to the pinion housing.

Key way on the pinion housing

Friction disk (#318) Friction disk (#318)

Pinion housing

Coarse motion axle

20. Install the special washer to the coarse motion axle.


Special washer (#339)

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R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 21. Install the spacer to the coarse motion axle into the pinion housing. When installing the spacer, face the grooved surface of the spacer outward as shown in the photograph.

Spacer (#312)


Grooved surface Outward this side

22. Apply lubricant L3047 to both surfaces of the Delrin washer, and fit it to the coarse motion axle.

Delrin Delrin washer washer (#315) (#315)

Coarse Coarse motion motion axle axle (#310) (#310)

23. Apply lubricant L3047 to the surface with V-groove of the thrust retainer. 24. Screw the thrust retainer to the coarse motion axle until it stops. Insert a hex-key into the hole, and tighten the two set screws. 25. Apply adhesive #757 to the threads of the two set screws. Hex-key Apply lubricant to the V-grooved surface


65



R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 26. Apply lubricant L3047 to the specified portions of the fine motion axle (with the fine motion handle) as shown in the photograph, and insert it into the gear case. Apply lubricant

Fine motion axle (with the fine motion handle) Fine motion handle

27. Apply lubricant L3047 to the two Delrin washers and Belleville spring, and fit them to the fine motion axle.

デルリンワッシャ(#314)、皿ば Fit the Delrin washer (#314), Belleville spring ね(#313)、デルリンワッシャ (#313) and Delrin washer (#314) in order. (#314)の順に組み込む

微動軸(#323) Fine motion axle (#323)

28. Screw the fine motion handle to the fine motion axle, and tentatively fix them with the circular nut.

Fine motion handle (#324) Circular nut (#302)

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R-4758.B

5-5-2. Assembling Fine/Coarse Focus Block (For 50i/55i) 29. Tentatively install the fine focus handle cover. 30. Wrap the string around the fine focus handle cover as shown in the photograph, and hook the spring scale on the end of the string. Pull the spring scale in the direction of the arrow. Check that the value of the spring scale meets the following specification when the fine focus handle starts turning. If not to meet the specification, change the installing position of the fine motion handle screwed in step28, then check again.

Specification: 11.5 to 21 g (Fine motion torque: 35 to 65 gf x cm)

Wrap the string around the fine focus handle cover, and hook the spring scale on the end of the string. Move the scale in the direction of the arrow.


31. After adjustment is completed, remove the fine focus handle cover once, and then firmly tighten the circular nut. After tightening, check that the fine motion handle is not slack even if the fine motion handle on the opposite side is turned. 32. Apply adhesive #757 to the threads of the circular nut. 33. Install the fine focus handle cover to the fine motion handle.


34. 35. 36. 37.

Install the stage. (Refer to Section 5-2.) Install the objective lens. Install the condenser lens. (Refer to Section 5-2.) Install the eyepiece tube. (Refer to Section 5-2.)

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R-4758.B

5-6-1. Disassembling Field Stop Block (For 50i/55i) - Some screws are fixed with adhesive. Apply alcohol to melt the adhesive on these screws.

5-6-1. Disassembling - If the mirror or the lens attached on the lens holder of the field stop block is disassembled, perform steps 1 to 9 and steps 13 to 17. 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Place the microscope upside down. Bottom cover Remove the five special hexagon bolts (M3 x 6) (#239), and remove the Special bottom cover. hexagon bolts


(M3 x 6) (#239)

7. Remove special screw (#208) fixing the lever (#210). Diaphragm When removing the lever, the special open-shut dial washer (#209) might fall. (#205) Be careful not to lose it. 8. Remove the center shaft (#214) to remove the diaphragm open-shut dial (#205).

Center shaft (#214) 中心軸(#214)

Special screw (#208) Special washer (#209)

Lever (#210)

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R-4758.B

5-6-1. Disassembling Field Stop Block (For 50i/55i) 9. Remove the three hexagon socket head cap bolts (M3 x 12) (#256) fixing the field stop block.


Field stop block


10. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the blade mount (#207). [NOTE] When the blade mount is removed, the eight blades (for 50i; #A1, for 55i: #260) are removed at the same time. Be careful not to lose them. Be very careful not to bend or apply lubricant to the blade. Blade (50i:#A1、55i:#260)


Blade mount (#207)

11. Remove the eight blades from the lens holder (#204). 12. Remove the blade guide way (#206) from the lens holder (#204).

Lens holder (#204)

69

Blade guide way (#206)


R-4758.B

5-6-1. Disassembling Field Stop Block (For 50i/55i) Disassembling mirror and lens 13. Scrape off the adhesive joints between the mirror (#2) and the lens holder (#204).

Mirror (#2)

Adhesive

14. Remove the mirror from the lens holder, with care to avoid damage to the mirror. If the adhesive cannot be removed, warm it using a heat gun or the like.

Lens holder (#204)

Adhesive

15. Scrape off the adhesive from the perimeter of the lens (#3).

Lens (#3)

Lens holder (#204)

Adhesive

16. Remove the lens from the lens holder. If the adhesive cannot be removed, warm it using a heat gun or the like.

17. Remove any remaining adhesive on the lens holder after the lens or the mirror is removed completely. Then, clean the surface with alcohol.

The disassembly of the field stop block is completed. The disassembled parts should be washed and cleaned.

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R-4758.B

5-6-2. Assembling Field Stop Block (For 50i/55i) 5-6-2. Assembling -

The assembling procedures for the lens and mirror are explained in steps 22 to 28.

1. Apply lubricant G7813 to the specified portion of the blade guide way as shown in the photograph.


Shaft

Apply lubricant outside surface

2. Insert the shaft of the blade guide way into the groove of the lens holder, and fully turn it in the direction of the arrow.


Lens holder (#204)

Shaft of the blade guide way

3. Install the eight blades to the blade guide in the open state while putting the projection of the blade into the groove of the blade guide.

Blades (8pcs)

Lens holder (#204)

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R-4758.B

5-6-2. Assembling Field Stop Block (For 50i/55i) 4. Install the blade mount so that the slightly curved surface of it faces the blade. [NOTE] When assembling, be sure to insert the projection of the blade into the hole of the blade mount.

Projection of the blade

2 mm dia. rod

Blade mount

2 mm dia. rod

5. Insert the two 2 mm diameter rods into the two specified holes shown in the Hexagon socket head cap bolts (M3 x 6) (#254) photograph so that the relative position of the lens holder and the blade mount is aligned. 6. Tighten the blade mount using the four hexagon socket head cap bolts (M3 x 6). 7. Remove the two rods inserted in step 5. 8. When the blade guide way is turned by hand, check that the blades open and shut smoothly. 9. While opening or shutting the blade 10 to 20 times, blow away any dust from the blades using an airbrush or the like. Hexagon socket head 10. Tighten the field stop block using the three Field stop block cap bolt (M3 x 12) (#256) hexagon socket head cap bolts (M3 x 12).


11. Apply lubricant G7813 to the specified portion of the center shaft, and apply adhesive #757 to the tip of its screw as shown in the photograph. 12 Tighten the diaphragm open-shut dial to the lens holder using the center shaft.

Center shaft (#214)

Apply lubricant Diaphragm open-shut dial (#205)

Apply lubricant

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5-6-2. Assembling Field Stop Block (For 50i/55i) 13. Apply lubricant G7813 to the shaft of the special screw. 14. While inserting the shaft of the blade guide way into the U-groove of the lever, assemble the lever to the lens holder, and tighten it with special screw and special washer. Special screw (#208) Special washer (#209) Lever (#210) U-groove

Shaft of the blade guide way

Lever (#210)

15. When the lever is moved by hand, check Bottom cover that the blades open and shut smoothly. 16. Tighten the bottom cover using the Special five special hexagon bolts (M3 x 6). hexagon bolts (M3 x 6) (#239)

17. 18. 19. 20. 21.

Return the microscope to its original position. Install the stage. (Refer to Section 5-2.) Install the condenser lens. (Refer to Section 5-2.) Install the objective lens. Install the eyepiece tube. (Refer to Section 5-2.)

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R-4758.B

5-6-2. Assembling Field Stop Block (For 50i/55i) Assembling mirror and lens 22. Clean the adhesive coating surfaces on the lens holder using alcohol. 23. Apply adhesive #2057 to the adhesive coating surfaces of the mirror on the lens holder. 24. Cement the mirror while pushing it against the lens holder.

Mirror (#2)

Adhesive

Adhesive

Lens holder (#204)

25. Clean the lens with alcohol. 26. Place the lens onto the lens holder, with the less curved side facing the lens holder. 27. Bond the lens by applying adhesive (#2057) to a few positions around the lens and shedding ultraviolet rays. Lens (#3)

Lens holder (#204)

Small curved surface of the lens

Adhesive

28. After the lens and mirror are cemented, blow away any dust from the lens and the mirror using an airbrush or the like.

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R-4758.B

5-7-1. Disassembling ND Filter Block (For 50i) 5-7-1. Disassembling 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Place the microscope upside down. Remove the five special hexagon bolts (M3 Bottom cover x 6) (#239), and remove the bottom cover.



7. Disconnect the connector connected to the brightness controller board (#501). 8. Remove a hexagon socket head cap bolt (M3 x 8) (#255) fixing the harness, and release the harness clamper. 9. Remove a hexagon socket head cap bolt (M3 x 8) (#255), and remove the ND filter block. Remove the harness from the clamper on the ND filter. Hexagon socket head cap bolt (M3 x 8) (#255)

ND filter block

Brightness controller board (#501)


75

Harness connector

Clamper

ND filter block


R-4758.B

5-7-1. Disassembling ND Filter Block (For 50i) 10. Release three claws of the ND filter holder (#215), and remove the ND filter (#6).

ND filter holder (#215) Claws

ND filter (#6)

11. Remove the projections on the ND filter holder from the holes on the lever (#216) and the lever supporter (#217). Lever (#216)

Projection Projections

Lever supporter (#217)

ND filter holder (#215)

12. Pull out the two levers from the lever supporter.


Levers (#216)


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R-4758.B

5-7-2. Assembling ND Filter Block (For 50i) 5-7-2. Assembling 1. Apply lubricant G9124 to the specified portions of the two levers as shown in the photograph, and insert them into the holes on the lever supporter. [NOTE] Do not apply lubricant other than the specified portions.

Apply lubricant


Levers (#216)

Apply lubricant

2. Install the ND filter holder to the two levers and lever supporter in the direction as shown in the photograph. 3. Put the projections on the ND filter holder into each hole on the two levers and the lever supporter. Lever (#216)


Lever supporter


4. Install the ND filter to the ND filter holder so that an evaporated surface is in the orientation shown in the photograph.


ND filter holder (#215) Claws

ND filter (#6) (An evaporated surface faces upward.)

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R-4758.B

5-7-2. Assembling ND Filter Block (For 50i) 5. Put the harness into the hole on the ND filter block, and secure it using the clamper.

Clamper

ND filter block

Harness connector

6. Tighten the ND filter block using a hexagon socket head cap bolt (M3 x 8). 7. Secure the harness using a hexagon head cap bolt (M3 x 8). 8. Connect the harness connector to the brightness controller board.


ND filter block




Bottom cover


10. 11. 12. 13. 14.


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R-4758.B

5-8-1. Disassembling Lighting Block (For 50i) - Some screws and diffuser are fixed with adhesive. Apply alcohol to melt the adhesive on these.

5-8-1. Disassembling 1. 2. 3. 4. 5.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) While pressing the two portions of the lamp cover (#223) in the arrow direction (a) shown in the figure, move it in the arrow direction (b) to remove.

Lamp cover (#223)

(a) (a)

6. Disconnect the lamp (#227). 7. Pull out the hexagonal driver (#248). 8. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the plastic cover (#202). 9. Remove the cap (#233).


(b)

Cap (#233)

Hexagon socket head cap bolts (M3 x 6) (#254) Lamp (#227)


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R-4758.B

5-8-1. Disassembling Lighting Block (For 50i) 10. Remove the power supply assembly. (Refer to Section 5-9.) 11. Place the microscope upside down. 12. Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover.

Bottom cover



13. Remove the four hexagon socket head cap Lighting block bolts (M3 x 8) (#255), and remove the lighting block.


14. Remove the two diffusers (#4 and #5) from the lens holder (#221).

Diffuser (#4)

Diffuser (#5)

Lens holder (#221)

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R-4758.B

5-8-1. Disassembling Lighting Block (For 50i) 15. Remove the two screws (#257), and remove the cable with lamp socket (#505) from the lamp socket holder (#226).

Screws (#257)

Lamp socket holder (#226)

Cable with lamp socket (#505)

16. Remove the four hexagon socket head cap bolts (M3 x 6), and remove the collector lens (#1) and lamp socket holder (#226). [NOTE] When removing the lamp socket holder, the collector lens is removed at a same time. Be careful not to drop or scratch the lens.

Lamp socket holder (#226) Hexagon socket head cap bolts （M3 x 6）(#254）on both sides

81

Collector lens (#1)


R-4758.B

5-8-2. Assembling Lighting Block (For 50i) 5-8-2. Assembling 1. Clean the collector lens. 2. After installing the collector lens to the lens holder in the direction as shown in the photograph, tighten the lamp socket holder using the four hexagon socket head cap bolts (M3 x 6).

Collector lens (#1)

Lamp socket holder (#226) Hexagon socket head cap bolts M3 x 6）(#254）on both sides

3. Pass the cable of the cable with lamp socket through the hole on the lamp socket holder, and tighten the socket with the two screws. Apply adhesive #2014 to the spaces between the screws and the lamp socket.

Screws (#257)

Lamp socket holder (#226)

4. Apply adhesive #757 (Clear) to the side edges of the two diffusers which contact the lens holder. 5. Install the two diffusers to the lens holder in the orientation shown in the photograph. [NOTE] Be sure to install the mat surface of the diffusers in the orientation shown in the photograph.

Diffuser (#5)

Cable with lamp socket (#505)

Diffuser (#4) Mat surface

Mat surface Lens holder (#221)

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5-8-2. Assembling Lighting Block (For 50i) 6. Place the microscope upside down. 7. Install the lighting block, and firmly move it in the direction of the arrows. Tighten it with four hexagon socket head cap bolts (M3 x 8).

Lighting block


Bottom cover




9. 10. 11. 12. 13. 14.

Return the microscope to its original position. Install the power supply assembly. (Refer to Section 5-9.) Tighten the plastic cover using the four hexagon socket head cap bolts (M3 x 6). Install the cap. Connect the lamp to the lamp socket. Move the lamp cover in the opposite direction of the arrow, and install it to the plastic cover. 15. Install the hexagonal driver (#248) to the plastic cover. Plastic cover (#202)

Cap (#233)



83

Lamp cover (#223)


R-4758.B

5-8-2. Assembling Lighting Block (For 50i) 16. 17. 18. 19.

Install the stage. (Refer to Section 5-2.) Install the condenser lens. (Refer to Section 5-2.) Install the objective lens. Install the eyepiece tube. (Refer to Section 5-2.)

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5-9-1. Disassembling Power Supply Assembly (For 50i) 5-9-1. Disassembling 1. While pressing the two portions of the lamp cover (#223) in the arrow direction (a) shown in the figure, move it in the arrow direction (b) to remove.

Lamp cover (#223)

(a) (a)

2. Disconnect the lamp (#227). 3. Pull out the hexagonal driver (#248). 4. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the plastic cover (#202). 5. Remove the cap (#233).


(b)

Cap (#233)


Hexagonal driver (#248) Hexagon socket head cap bolts (M3 x 6) (#254)

6. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the attaching plate (#231).


85


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5-9-1. Disassembling Power Supply Assembly (For 50i) 7. Disconnect the harness from the Harness connector connector (CN1) on the power supply assembly (#502). 8. Remove the three hexagon socket Hexagon socket head cap bolts (M3 x 6) (#254) head cap bolts fixing the power supply assembly.

Power supply assembly (#502)

(M3 x 6) (#254)

9. Lift up the power supply assembly, and disconnect the harness connectors (CN2 and CN3). Then, remove the power supply assembly.


Connector (CN3) Connector (CN2)

86


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5-9-2. Assembling Power Supply Assembly (For 50i) 5-9-2. Assembling 1. Connect the harness connectors to CN2 and CN3 on the power supply assembly.


Connector (CN3) Connector (CN2)

2. Tighten the power supply assembly using Connector (CN1) the three hexagon socket head cap bolts (M3 x 6). 3. Connect the harness connector Hexagon socket to CN1 located at the top of the head cap bolts power supply assembly. (M3 x 6) (#254)

4. Tighten the attaching plate (#231) using the four hexagon socket head cap bolts (M3 x 6).



Attaching plate plate (#231) (#231) Attaching

87


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5-9-2. Assembling Power Supply Assembly (For 50i) 5. Install the cap (#233). 6. Tighten the plastic cover using the four hexagon socket head cap bolts (M3 x 6). 7. Install the hexagonal driver. 8. Connect the lamp.


Cap (#233)



9. Move the lamp cover in the opposite direction of the arrow, and install it to the plastic cover. Lamp cover (#223)

(a) (a)

88

(b)


R-4758.B

5-10-1. Disassembling Brightness Control Board (For 50i) 5-10-1. Disassembling 1. 2. 3. 4. 5.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Loosen a set screw (#258), and remove the brightness control dial (#241).

Set screw (#258)

Brightness control dial (#241)

6. Place the microscope upside down. 7. Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover.

Bottom cover



8. Remove the field stop block. (Refer to Section 5-6.) 9. Disconnect the harness connector (J1) on the brightness controller board (#501). 10. Remove the two hexagon socket head cap bolts (M3 x 6) (#254), and remove the brightness controller board.


Connector (J1)


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1 5-10-1. Disassembling Brightness Control Board (For 50i) 11. Remove the two special hexagon bolts (M3 x 6) (#239), and remove the two bending plates from the brightness controller board.



90

Bending Bending plates plates (#218) (#218)


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5-10-2. Assembling Brightness Control Board (For 50i) 5-10-2. Assembling 1. Tighten the two bending plates to the brightness controller board using the two special hexagon bolts (M3 x 6).


Brightness controller board (#501) Brightness controller board (#501)

2. Tighten the brightness controller board using the two hexagon socket head cap bolts (M3 x 6). 3. Connect the harness connector to the connector (J1) on the brightness controller board.

Bending plates (#218)

Connector (J1)


4. Install the field stop block. (Refer to Section 5-6.) 5. Tighten the bottom cover using the five special hexagon bolts (M3 x 6).

Bottom cover


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5-10-2. Assembling Brightness Control Board (For 50i) 6. Return the microscope to its original position. 7. Turn the shaft of the variable resistor so that the D-cut of the shaft faces top. Install the brightness control dial to the shaft so that a set screw aligns with the D-cut of the shaft, and then tighten the set screw. When the brightness control dial is turned fully clockwise and counterclockwise, check that the indication of the brightness control dial is aligned with the indication on the cover. Set screw (#258)

Shaft of the variable resistor

8. 9. 10. 11.



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5-11-1. Disassembling Seesaw Switch (For 50i) 5-11-1. Disassembling 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Place the microscope upside down. Bottom cover Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover. Special


hexagon bolts (M3 x 6) (#239)

7. Disconnect the terminals connected to the seesaw switch (#511). 8. Release the claws on both sides of the seesaw switch, and remove it outward.

Seesaw switch (#511)

Terminal (1 pin) side side

Claw

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5-11-2. Assembling Seesaw Switch (For 50i) 5-11-2. Assembling 1. Install the seesaw switch to the microscope, and secure it by the claws located on both sides. [NOTE] Take care to install the correct orientation of the seesaw switch. 2. Connect the terminals to the seesaw switch. [CAUTION] Make sure you always connect to the correct wire to each pin. 1 pin: black wire of cable with AC socket (#503) 2 pin: black wire of cable with connector (#506) 3 pin: white wire of cable with AC socket (#503) 4 pin: white wire of cable with connector (#506) Seesaw switch (#511) Bottom cover side Terminal (1 pin)

side

side

side

side

Terminals location Claw


Bottom cover


4. 5. 6. 7. 8.

Return the microscope to its original position. Install the stage. (Refer to Section 5-2.) Install the condenser lens. (Refer to Section 5-2.) Install the objective lens. Install the eyepiece tube. (Refer to Section 5-2.) 94



R-4758.B

5-12-1. Disassembling Color Compensation Filter Unit (For 55i) 5-12-1. Disassembling 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Place the microscope upside down. Bottom cover Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover.



7. Disconnect the flat cable connector (#507) from the switch board (#502).

Switch board (#502) Connector

8. Remove a hexagon socket head cap bolt (M3 x 8) (#255), and remove the color compensation filter unit.

Color compensation filter unit


95


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5-12-1. Disassembling Color Compensation Filter Unit (For 55i) 9. Release three claws of the ND filter holder (#215), and remove the color compensation filter (#5).

Claws

Color compensation filter (#5) ND filter holder (#215)

10. Remove the projections on the ND filter holder from each hole on the two levers (#216) and the lever supporter (#217). Lever (#216)





11. Pull out the two levers from the lever supporter.

Levers (#216)


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5-12-2. Assembling Color Compensation Filter Unit (For 55i) 5-12-2.

Assembling

1. Apply lubricant G9124 to the specified portions of the two levers as shown in the photograph, and insert them into the holes on the lever supporter. [NOTE] Do not apply lubricant other than to the specified portions.

Apply lubricant


Levers (#216)

Apply lubricant

2. Install the ND filter holder to the lever supporter in the direction shown in the photograph. 3. Put the projections on the ND filter holder into each hole on the two levers. Projection

Levers (#216) Projections



4. Install the color compensation filter to the ND filter holder so that an evaporated surface of the filter is in the orientation shown in the photograph.


Claws

Color compensation filter (#5) (An evaporated surface faces upward.) ND filter holder (#215)

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5-12-2. Assembling Color Compensation Filter Unit (For 55i) 5. Put the connector of the flat cable through the hole on the color compensation filter unit. 6. Tighten the color compensation filter unit using a hexagon socket head cap bolt (M3 x 8).

Color compensation filter unit


7. Connect the connector of the flat cable to the switch board.

Switch board (#502) Connector


Bottom cover


9. 10. 11. 12. 13.


98



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5-13-1. Disassembling Diffuser Unit (For 55i) 5-13-1. Disassembling 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Place the microscope upside down. Bottom cover Remove the five special hexagon bolts (M3 x 6) (#239), and remove the bottom cover.



7. Remove the two hexagon socket head cap bolts (M3 x 8) (#255), and remove the diffuser unit.

Diffuser unit

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5-13-2. Assembling Diffuser Unit (For 55i) 5-13-2. Assembling 1. Clean the adhesive coating surface of the diffuser on the lens holder using alcohol. 2. Apply adhesive #2061 to the adhesive coating surfaces of the diffuser on the lens holder. [NOTE] Do not mistake the installing position of the diffuser and the lens to the lens holder.

Diffuser (#4) (Mat surface is lowered.)

Adhesive

3. Cement the diffuser while pushing it Lens holder (#221-1) against the lens holder. 4. Clean the adhesive coating surface of the lens on the lens holder using alcohol. 5. Apply adhesive #2061 to the adhesive coating surfaces of the lens on the lens holder. 6. Install the lens to the lens holder so that the small curved surface of the lens faces the lens holder. Cement the lens to the lens holder while pushing it against the lens holder. Lens (#1)

Large curved surface Adhesive

Lens holder (#221-1)

7. After the lens and/or diffuser is cemented, blow away any dust from the lens and diffuser using the airbrush or the like. 8. Install the diffuser unit, and firmly move it in the direction of the arrows. Tighten it with two hexagon socket head cap bolts (M3 x 8).

Diffuser unit

Push it in these directions.

100

Hexagon socket head cap bolts (M3 x 8)


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5-13-2. Assembling Diffuser Unit (For 55i) 9. Tighten the bottom cover using the five special hexagon bolts (M3 x 6).

Bottom cover


10. 11. 12. 13. 14.


101



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5-14-1. Disassembling Light Source Unit (For 55i) 5-14-1. Disassembling 1. While pressing the two portions of the lamp cover (#223) in the arrow direction (a) shown in the photograph, move it in the arrow direction (b) to remove.

Lamp cover (#223)

(a) (a)

(b)

2. Pull out the hexagonal driver (#248). 3. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the plastic cover (#202). 4. Remove the cap (#233).

Cap (#233)


Plastic cover (#202) Special hexagon bolts (M3 x 6) (#239)

5.

Remove the four special hexagon bolts (M3 x 6) (#239), and remove the control board (#509). 6. Disconnect the flat cable from the connector (J4) on the main board block of the control board. Connector (J4)

Control board (#509)

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5-14-1. Disassembling Light Source Unit (For 55i) 7. Remove the two special hexagon bolts (M3 x 6) (#239) fixing the LED board (#503).

Special hexagon bolts (M3 x 6)(#239)

LED board (with battery case) (#503)

8. Disconnect the LED board from the connector (J2) on the control board.

Control board

Connector

Connector (J2)

LED board

9. While pressing the claw on the battery case (#224), remove the LED board from the battery case. [NOTE] When removing the LED board, be careful not to deform the terminals on the LED board. LED board (#503)

LED board (#503)

Claw Terminals

Battery case (#224)

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5-14-2. Assembling Light Source Unit (For 55i) 5-14-2.

Assembling

1. While pushing the claw on the battery case, move the LED board in the opposite direction of the arrow to install to the battery case. [NOTE] When installing the LED board, be careful not to deform the terminals on the LED board.

LED board (#503)

Claw Battery case (#224)

2. Connect the connector (J2) on the LED board to the control board. 3. Tighten the LED board to the control board using the two special hexagon bolts (M3 x 6). Special hexagon bolts (M3 x 6)(#239)

Control board

Connector

Connector (J2)

LED board (with battery case) (#503)

LED board


4. Connect the flat cable to the connector (J4) on the main board block of the control board. 5. Tighten the control board using the four special hexagon bolts (M3 x 6).

Connector Connector (J4) (J4)

Control Control board board (#509) (#509)

104


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5-14-2. Assembling Light Source Unit (For 55i) 6. Tighten the plastic cover using the four hexagon socket head cap bolts (M3 x 6).

Cap (#233)



7. Move the lamp cover in the opposite direction of the arrow, and install it to the plastic cover. 8. Install the hexagonal driver.

Lamp cover (#223)

9. After the assembling is completed, perform the LED position adjustment. (Refer to Section 5-21.)

105


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5-15-1. Disassembling Switch Board (For 55i) 5-15-1. Disassembling 1. 2. 3. 4. 5.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Loosen a set screw (#258) fixing the brightness control dial (#241), and remove the brightness control dial.

Set screw (#258)



Bottom cover



8. Remove the field stop block. (Refer to Section 5-6.) 9. Disconnect the flat cable with connector (#507) from the connector (J1) on the switch board (#502). 10. Remove the two hexagon socket head cap bolts (M3 x 6) (#254), and remove the switch board.

Switch board (#502)

Connector (J1)

Flat cable with connector (#507)


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5-15-1. Disassembling Switch Board (For 55i) 11. Remove the two special hexagon bolts (M3 x 6) (#239), and remove the two bending plates from the switch board.


Bending plates (#218) Switch board (#502)

107


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5-15-2. Assembling Switch Board (For 55i) 5-15-2.

Assembling

1. Tighten the two bending plates to the switch board using the two special hexagon bolts (M3 x 6).


Bending plates (#218) Switch board (#502)

2. Tighten the switch board using the two hexagon socket head cap bolts (M3 x 6). 3. Connect the flat cable with connector to the connector (J1) on the switch board.

Switch board (#502)

Connector (J1)

Flat cable with connector (#507) Hexagon socket head cap bolts (M3 x 6) (#254)

4. Install the field stop block. (Refer to Section 5-6.) 5. Tighten the bottom cover using the five special hexagon bolts (M3 x 6).

Bottom cover


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5-15-2. Assembling Switch Board (For 55i) 6. Return the microscope to its original position. 7. Turn the shaft of the variable resistor so that the D-cut of the shaft faces top. Install the brightness control dial to the shaft so that a set screw aligns with the D-cut of the shaft, and then tighten the set screw. When the brightness control dial is turned fully clockwise and counterclockwise, check that the indication of the brightness control dial is aligned with the indication on the cover. Set screw (#258)

Brightness control dial (#241) Shaft of the variable resistor

8. 9. 10. 11.


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5-16-1. Disassembling Seesaw Switch (For 55i) 5-16-1. Disassembling 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Place the microscope upside down. Remove the five special hexagon bolts Bottom cover (M3 x 6) (#239), and remove the bottom cover.



7. Disconnect the terminals connected to the seesaw switch (#506). 8. Release the claws on both sides of the seesaw switch, and remove it outward.

Seesaw switch (#506) Terminal (1 pin) side side

Claw

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5-16-2. Assembling Seesaw Switch (For 55i) 5-16-2.

Assembling

1. Install the seesaw switch to the microscope, and secure it by the claws located on both sides. [NOTE] Take care to install the correct orientation of the seesaw switch. 2. Connect the terminals of the cable to 3-pin and 4-pin of the seesaw switch. [CAUTION] Be sure to connect the terminals to the pins as far as they will go.

Seesaw switch (#506)

Terminal (1 pin) side side

Claw


Bottom cover


4. 5. 6. 7. 8.


111



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5-17. Stage Tilt Adjustment (For 50i/55i) 1. Set the 1” reading collimator (J28005) to the dovetail for eyepiece tube mounting. 2. Set the parallel mirror (J28003) on the stage.


Sub Stage Parallel mirror

3. Set the collimator so that the X direction scale is parallel with the traveling direction of the X-axis of the stage.

Traveling direction of the X-axis of the stage

X direction

4. Measure the amount of deviation of the center (O’) of the scale image from the center (O) of the collimator. Check the amount of deviation meets the following specification.

Y direction

Center (O’) of the scale image

X direction

Specifications: X direction: within +/-1” Y direction: within +/-1” Center (O) of the collimator

If the specification is met, perform the stage centering adjustment. (Refer to Section 5-18.) If not, perform the adjustment according to steps 6 and later. Be sure to adjust Y direction first. 112


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5-17. Stage Tilt Adjustment (For 50i/55i) If Y direction does not meet the specification: 5. Check that the scale image is shifted in either direction.

Shift of (a) direction

Shift of (b) direction

6. Remove the 1” reading collimator, parallel mirror, and stage. 7. Remove the elevation block from the microscope base. (Refer to Section 5-3.) 8. If the scale image is shifted to (a) direction: Paste the brass foil to the specified portion of the elevation block as shown in the photograph using adhesive #350. If the scale image is shifted to (b) direction: Paste the brass foil to the specified portion of the elevation block as shown in the photograph using adhesive #350. Scale image is shifted to (b) direction

Scale image is shifted to (a) direction

Paste the brass foil.


9. Install the elevation block, stage, parallel mirror, and 1” reading collimator. 10. Check that the amount of deviation for Y direction meets the specification. If the specification is not met, perform steps 6 to 10 again. If the specification is met, check that the amount of deviation for X direction meets the specification.

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5-17. Stage Tilt Adjustment (For 50i/55i) If X direction does not meet the specification: 11. Loosen the six hexagon socket head cap bolts fixing the elevation block to the microscope base. 12. Tilt the elevation block in the direction shown in the photograph to meet the amount of deviation for X direction meets the specification.

13. Tighten the six hexagon socket head cap bolts. 14. Check that the amount of deviation for X direction meets the specification. If the specification is not met, perform steps 12 to 14 again. If the specification is met, re-check the amount of deviations for both Y and X directions meet the specifications. 15. After the stage tilt adjustment is completed, be sure to adjust the centering of the stage. (Refer to Section 5-18.)

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5-18. Stage Centering Adjustment (For 50i/55i) [NOTE] Before performing this adjustment, the stage tilt adjustment should be completed. (Refer to Section 5-17.) 1. Set the 80i sub stage tool A (J25481) to the dovetail on the elevation block. 2. Set the centering tool (J25298) to the round dovetail for the eyepiece tube mounting, and secure it using the clamp screw.

Centering tool


3. Insert the centering rod (J25299) to the centering tool, and check that the tip of the rod is inserted into the hole on the 80i sub stage tool A. If the rod is inserted: perform the condenser holder tilt adjustment. (Refer to Section 5-19.) If not, perform the confirmation and adjustment according to steps 4 and later.

Centering rod Centering tool


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5-18. Stage Centering Adjustment (For 50i/55i) 4. Check that the centering rod is shifted against to the 80i sub stage tool in either direction. If the rod is shifted to (a) direction: This shift is generated by the accuracy of machine when manufactured, and cannot be adjusted to zero. Therefore, continue with the condenser holder tilt adjustment. (Refer to Section 5-19.) If the rod is shifted to (b) direction: Adjust the centering according to steps 5 and later.

Centering rod




Center of the 80i sub stage tool A

5. Remove the centering rod and 80i sub stage tool A. 6. Remove the elevation block from the microscope base. 7. Paste the brass foil to the specified portion of the elevation block as shown in the photograph using adhesive #350.

Paste the brass foil in round marks position.

8. Install the elevation block, centering rod, and 80i sub stage tool A. 9. Check that the specification is met. If the specification is not met, perform steps 4 to 8 again. If the specification is met, perform the stage tilt adjustment again because the elevation block is removed from the microscope base. (Refer to Section 5-17.) 10. After the stage tilt adjustment and stage centering adjustment are completed, be sure to adjust the condenser holder tilt. (Refer to Section 5-19.)

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5-19. Condenser Holder Tilt Adjustment (For 50i/55i) [NOTE] Before performing this adjustment, the stage tilt adjustment (Section 5-17) and stage centering adjustment (Section 5-18) should be completed. 1. Remove the stage. 2. Set the 1” reading collimator (J28005) to the dovetail for eyepiece tube mounting. 3. Set the parallel mirror (J28003) on the condenser receptacle of the elevation block.


Parallel mirror Condenser receptacle

4. Set the collimator so that the X direction scale is parallel with the traveling direction of the X-axis of the stage.

Traveling direction of the X-axis of the stage

X direction

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5-19. Condenser Holder Tilt Adjustment (For 50i/55i) 5. Measure the amount of deviation of the center (O’) of the scale image from the center (O) of the collimator. Check the amount of deviation meets the following specification. Specifications: X direction: within +/-7” Y direction: within +/-7”

Y direction

Center (O’) of the scale image

Center (O) of the collimator

If the specification is met, perform the condenser holder upper limit stopper position. (Refer to Section 5-20) If not, perform the adjustment according to steps 6 and later. Be sure to adjust Y direction first. If Y direction does not meet the specification: 6. Check that the scale image shifts in either direction.


7. Remove the 1” reading collimator and parallel mirror. 8. Remove the three hexagon socket head cap bolts, and remove the condenser holder block from the elevation block.


Hexagon socket head cap bolts (M3 x 8) (#442) Elevation block


118


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5-19. Condenser Holder Tilt Adjustment (For 50i/55i) 9. If the scale image is shifted to (a) direction: Paste the brass foil to the specified portion of the condenser holder block as shown in the photograph using adhesive #350. If the scale image is shifted to (b) direction: Paste the brass foil to the specified portion of the condenser holder block as shown in the photograph using adhesive #350. Scale image is shifted to (b) direction

Scale image is shifted to (a) direction



10. Install the condenser holder block, parallel mirror, and 1” reading collimator. 11. Check that the amount of deviation for Y direction meets the specification. If the specification is not met, perform steps 6 to 10 again. If the specification is met, check that the amount of deviation for X direction meets the specification. If X direction does not meet the specification: 12. Loosen the three hexagon socket head cap bolts fixing the condenser holder block to the elevation block. 13. Tilt the condenser holder block in the direction shown in the photograph to meet the specification for the amount of deviation for X direction. 14. Tighten the three hexagon socket head cap bolts.

119




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5-19. Condenser Holder Tilt Adjustment (For 50i/55i) 15. Re-check the amount of deviation for X direction. If the specification is not met, perform steps 12 to 14 again. If the specification is met, check that the amounts of deviation for both Y and X directions meet the specifications. 16. After the condenser holder tilt adjustment is completed, be sure to adjust the upper limit stopper position of the condenser holder. (Refer to Section 5-20.)

120


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5-20. Condenser Holder Upper Limit Stopper Position Adjustment (For 50i/55i) [NOTE] Before performing this adjustment, the stage tilt adjustment (Section 5-17), stage centering adjustment (Section 5-18), and condenser holder tilt adjustment (Section 5-19) should be completed. 1. Loosen a set screw (#446) of the condenser holder block. (The straight pin of the stopper will pop up by the force of the coil spring.)

Straight pin of the stopper

Set screw (#446)

Condenser holder block 2. Install the stage. 3. Install the condenser lens. 4. Set the specimen slide to the specimen Paper (approx. 0.1 holder on the stage. Specimen slide mm thick) 5. Cut a sheet of paper (approx. 0.1 mm thick) to about the same size as the tip of the condenser lens, and place it on that tip. Straight pin 6. While observing the specimen slide, turn Stage the knob of the condenser holder upward Set screw Condenser lens until the paper on the condenser lens just comes in contact with the specimen slide on the stage. 7. While maintaining the position adjusted in step 6, tighten the set screw loosened in step 1. 8. Remove the specimen slide. 9. Remove the paper from the tip of the condenser lens. 10. Turn the knob of the condenser holder once to lower. 11. Turn the knob upward until it stops. 12. Place the specimen slide on the stage again, and check that the specimen slide does not contact the tip of the condenser lens.

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5-21. LED Position Adjustment (For 55i) 1. 2. 3. 4. 5. 6.

Remove the eyepiece tube. (Refer to Section 5-2.) Remove the objective lens. Remove the condenser lens. (Refer to Section 5-2.) Remove the stage. (Refer to Section 5-2.) Pull out the hexagonal driver (#248). While pressing the two portions of the lamp cover (#223) in the arrow direction (a) shown in the figure, move it in the arrow direction (b) to remove.

Lamp cover (#223)

(a) (a)

7. Remove the four hexagon socket head cap bolts (M3 x 6) (#254), and remove the plastic cover (#202). 8. Remove the cap (#233).

(b)

Cap (#233)




Bottom cover


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5-21. LED Position Adjustment (For 55i) 11. Remove the two hexagon socket head cap bolts (M3 x 8) (#255), and remove the diffuser unit.

12. Return the microscope to its original position. 13. Loosen the four special hexagon bolts (M3 x 6) fixing the control board. 14. Connect the AC adapter or the battery to the microscope.

Diffuser unit



Control board (#509)

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5-21. LED Position Adjustment (For 55i) 15. Install the standard straight tube (J25295) to the microscope, and secure it using the clamp screw as shown in the photograph. 16. Set the Ph tool ring (J25260) to the centering telescope (J25172), and set them to the standard straight tube. [Note] The binocular tube installation is acceptable instead of installing the standard straight tube, Ph tool ring, and centering telescope to the microscope, as shown in the photograph. Centering telescope Ph tool ring

Binocular tube

Standard straight tube

Control board

17. Turn ON the power switch. The LEDs light up. 18. Adjust the position of the control board so that the center of the cross line on the centering telescope and the center of the central LED coincide. Specifications: Deviation between centers of the cross Central LED line and the central LED: Within 1.5 dev. of scale 19. After the adjustment is completed, tighten the control board using the four special hexagon bolts. 20. Re-check that the specification is met. 124


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5-21. LED Position Adjustment (For 55i) After adjustment, assemble the parts and units in the following steps. 21. Turn OFF the power, and disconnect the AC adapter or the battery. 22. Remove the standard straight tube, centering telescope, and Ph tool ring. 23. Place the microscope upside down. Hexagon socket head 24. Install the diffuser unit, and firmly move it in Diffuser unit cap bolts (M3 x 8) the direction of the arrows. Tighten it with two hexagon socket head cap bolts (M3 x 8).

Push it in these directions.


Bottom cover



26. Return the microscope to its original position. 27. Tighten the plastic cover using the four hexagon socket head cap bolts (M3 x 6).

Cap (#233)



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5-21. LED Position Adjustment (For 55i) 28. Move the lamp cover in the opposite direction of the arrow, and install it to the plastic cover. 29. Install the hexagonal driver.

30. 31. 32. 33.


126

Lamp cover (#223)

Nikon 50i service manual

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