SERVICE MANUAL
Date
Revise Version
Description
2010.4.14
V1.0
Initial Issue
2011.11.18
V2.0
According to the customer whole enginge module requirement to revise service manual,the contents as following: 1.Cancel charpter 2-13(Disassemble color wheel module). 2.Cancel charpter 2-14(Disassemble DMD chip and DMD board). 3.Cancel No.5,6,7,19,20 parts and modify No.18 part number in appendix A
2011.12.1
V3.0
According to the customer requirement to add contents as following: 1.Add charpter 2-13(Disassemble color wheel module). 2.Add charpter 2-14(Disassemble DMD chip and DMD board). 3.Add No.5,6,7,19,20 parts number in appendix A
2012.1.31
V4.0
Modify No.5,21 parts number in appendix A
2012.3.19
V5.0
1.Add No.31,32 parts number in appendix A 2.Add new photo sensor rework SOP in appendix C
Copyright March. 2012. All Rights Reserved
prepared:
Check:
Alex
Approved:
Preface This manual is applied to BS275/BX275 projection system. The manual gives you a brief description of basic technical information to help in service and maintain the product. Your customers will appreciate the quick response time when you immediately identify problems that occur with our products. We expect your customers will appreciate the service that you offer them. This manual is for technicians and people who have an electronic background. Please send the product back to the distributor for repairing and do not attempt to do anything that is complex or is not mentioned in the troubleshooting. Notice:
The information found in this manual is subject to change without prior notice. Any subsequent changes made to the data herein will be incorporated in future edition.
BS275/BX275 Service Manual Copyright March., 2012. All Rights Reserved Manual Version 5.0
BS275/BX275 Confidential
I
BS275/BX275 Comparison List PARTS
BS275
BX275
Main BD
80.8HC01G003
80.8HF01G003
Top Cover
51.8HC01G001
51.8HC01G011
DMD
48.8EH01G001
48.8CQ01G003
Engine
70.8HC13GR01
70.8HF05GR01
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II
Table of Content Chapter 1
Introduction Highlight 1-1 Compatible Mode
1-4
Product Overview
1-6
Remote control battery installation
1-12
Chapter 2 Disassembly Process Equipment Needed & Product Overview
2-1
Disassemble Lamp Cover Module
2-2
Disassemble Lamp Module
2-2
Disassemble Top Cover Module
2-3
Disassemble Zoom Ring Module
2-3
Disassemble Keypad Board Module
2-4
Disassemble Top Shielding
2-4
Disassemble IO Cover
2-5
Disassemble Main Board Module
2-5
Disassemble Main Board Shielding
2-6
Disassemble Front Cover Module and IR Sensor Board
2-8
Disassemble Engine Module
2-8
Disassemble Color Wheel Module
2-9
Disassemble DMD Chip and DMD Board
2-9
Disassemble Focus Ring
2-10
Disassemble Fan Module and Thermal Switch
2-10
Disassemble Blower Module
2-12
Disassemble LVPS Module
2-12
Disassemble Lamp Driver
2-13
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III
Chapter 3
Chapter 4
Disassemble Interlock Switch
2-14
Disassemble Bottom Shielding
2-15
Disassemble Speaker
2-15
Disassemble Bottom Cover Module
2-16
Rod Adjustment
2-17
Re-write Lamp Usage Hour
2-19
Troubleshooting LED Lighting Message
3-1
Main Procedure
3-2
Function Test & Alignment Procedure
Test Equipment Needed
4-1
Service Mode
4-1
OSD Reset
4-1
Factory Fan RPM Reset
4-2
Test Condition
4-2
Test Inspection Procedure
4-4
PC MODE
4-5
Video Performance
4-8
Calibration
Optical Performance Measure
4-10 4-12
Chapter 5 Firmware Upgrade Section 1: System Firmware Upgrade
5-1
Equipment Needed
5-1
DLP Composer Lite Setup Procedure
5-2
Get into FW mode
5-3
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NLINK Setup Procedure
5-9
Manley USB Driver Upgrade Procedure
5-10
8051 Firmware Upgrade Procedure
5-13
Chapter 6
EDID Upgrade
EDID Introduction
6-1
Equipment Needed
6-2
Setup Procedure (VGA)
6-3
EDID Key-In Procedure
6-4
Appendix A Exploded Image
I
Appendix B
Serial Number Definition
PCBA Code Definition
I II
Appendix C New photo sensor board Reworking SOP
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Chapter 1
Introduction 1-1 Highlight No
Item
Description
1
Technology
● 0.55” DMD 1 chip 2xLVDS (DarkChip3) S450
2
Dimension (W x D x H)
● 286.3*88.2*192 mm (without protruding parts)
3
Weight
● < 2.31Kg
4
Power Supply
● Universal AC 100--240V ~ 50 / 60 Hz with PFC input ● 180W Lamp @ normal operation ● 160W Lamp @ eco operation ● Variance FAN speed control (Depend on temperature variance)
5
Keystone Correction
● +/ -15 degree Vertical
6
Resolution
● Native Resolution: 800 X 600
7
Brightness
● 2250 ANSI Lumens ( Typical ) ● 2000 ANSI Lumens ( Minimum )
8
Contrast
● 2200:1 (Full on/Full off)
9
Uniformity
● 80% Typical (JBMA standard ) ● 65% Minimum (JBMA standard )
10
Throw ratio
● 1.95 ~ 2.15:1 distance/width @2.37m
11
Projection lens
12
Lamp life
13
Lens Offset
● 115%+/-5%
Video compatibility
● NTSC: M (3.58MHz), 4.43 MHz ● PAL: B, D, G, H, I, M, N ● SECAM: B, D, G, K, K1, L ● HDTV: 480i/p, 576i/p, 720p(50/60Hz), 1080i/p(50/60Hz)
14
● F# 2.41-2.55, 1.10X Mechanical Zoom Lens. f=21.8-24mm @ 60” ● 3000 hours at typical full power mode. ● 4000 hours at Eco mode (The more than 50% of lamp population have light out put>50% of initial min. Lumen output at the lamp life time.
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No
Item
Description ● One D-Sub 15-pin female connector for VGA input and component video input ● One Mini DIN 4-pin for S-Video Input ● One RCA Jack for Composite Video Input ● One Min-pin RS232 port for FW update ● One D-Sub 15-pin female connector for VGA output ● One Audio in 3.5mm mini-jack
15
Terminals
16
System Controller
● TI DDP2431
17
Color Wheel
● 40mm diameter, 6 segments (R81Y41G84C31W52B71) & 7200 rpm
18
Lamp
● 180W Lamp (Osram E20.8)
19
Temperature
● Operating: 5 ~ 35°C ● Storage: -20 ~ 60°C
20
Altitude
21
Input Signal
● Operating: 0~2,500 ft, for 5°C~35°C 2,500~5,000 ft, for 5°C~30°C 5,000~10,000 ft, for 5°C~25°C ● Storage 40,000 ft ● Computer analog input ● Video ● Analog RGB 0.7Vp-p, 75ohm ● Sync • Hsync Freq. 31.35~91.1kHz • Vsync Freq. 56~85Hz ● Separate Sync: (HV) TTL level (bi-polarity) ● Composite Sync: TTL level (bi-polarity) ● Sync-on-green: negative sync. 0.3Vp-p ● Analog Video • Composite video 75ohm • S-video (Y/C) 75ohm • Component video (Y/Pb/Pr) 75ohm
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No
Item
Description
22
Projection Distance
● 1.2~12m
23
Projection Screen Size
● Adjustable from 27.46” to 302.8” (Focus range)(Diagonal)
24
Color Wheel
● UL/ cUL, FCC B, TUV-GS & CB report, CE, C-Tick, CCC, KC, Gost-R, NOM, SASO
25
Audio speaker
● Built-in one 2W speaker
26
Projection method
● Desktop/Ceiling (Front/Rear)
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1-2 Compatible Mode Computer Compatibility (Analog) Compatibility
VGA
SVGA
XGA
WXGA
SXGA
SXGA+
Resolution
V-Sync [Hz]
640x350
70
640x350
85
640x400
85
640x480
60
640x480
72
640x480
75
640x480
85
720x400
70
720x400 800x600 800x600 800x600 800x600 800x600 1024x768 1024x768 1024x768 1024x768 1280x768 1280x768 1280x720 1280x800 1152x864 1152x864 1152x864 1152x864
85 56 60 72 75 85 60 70 75 85 60 75 60 60 60 70 75 85
1280x1024
60
1280x1024
75
1280x1024
85
1280 x 960
60
1400x1050
60
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Compatibility
Resolution
V-Sync [Hz]
UXGA MAC LC 13” MAC II 13”
1600 x 1200 640x480 640x480
60 66.66 66.68
MAC 16”
832x624
74.55
MAC 19”
1024x768
75
MAC
1152x870
75.06
MAC G4
640x480
60
i Mac DV
1024x768
75
i Mac DV
1152x870
75
i Mac DV
1280x960
75
Note: If the Computer Compatibility supportive signal is different from User's Manual, please refer to User's Manual.
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1-3 Product Overview Projector Outlook Front /Upper side
Item
Description
Item
Description
1
Control Panel
6
Focus Ring
2
Remote Sensor
7
Ventilation (outlet)
3
Zoom Ring
8
Lens
4
Ventilation (inlet)
9
Lens Cap
5
Speaker
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Rear side
Item
Description
Item
Description
1
RGB IN Connector
5
RGB OUT Connector
2
S-VIDEO Connector
6
AUDIO-IN Jack
3
VIDEO Connector
7
AC IN
4
RS232C Service Port
8
KensingtonTM Lock
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Control Panel
Item 1
Function POWER
Description Power On/Off the Projector
2
POWER LED
Indicate the projector’s status.
3
LAMP LED
Indicate the projector’s lamp status.
4
TEMP LED
5
KEYSTONE
Indicate the projector’s temperature status.. Adjust the image to compensate for distortion caused by tilting the projector.
7
Four Directional Select Keys SOURCE
8
MENU
9 10
VOLUME OK
11
AUTO
6
Use to selection.
select items or make adjustments to your
Press “SOURCE” to select an input signal. Press “Menu” to launch the on-screen display (OSD) menu. To exit OSD, Press “Menu” again. Adjust to increase / decrease the volume. Confirm your item selection. Automatically synchronizes the projector to the input source.
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Remote Control Layout
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Item
Function
Description
1
Infrared transmitter
Sends signals to the projector.
2
DIS-MODE
Select the Image mode from Presentation,Bright, Movie, SRGB, Blackboard,Classroom, User1 and User2.
3
POWER
Turning the Projector On/Off
4
COMPUTER
Press “COMPUTER” to choose RGB IN connector.
5
FREEZE
Pause the screen image. Press again to resume the screen image.
7
ENTER
Confirm your section of items in sub menu operation.
8
SOURCE
9
MENU
10
KEYSTONE -
Adjust the image to compensate for distortion caused by tilting the projector.
11
AV-MUTE
Momentarily turn off/on the audio and video.
12
RESET
Return the adjustments and settings to the factory default values. (except for lamp counter)
13
VIDEO 1 (S-VIDEO)
Press “VIDEO 1” to choose S-VIDEO connector.
14
VIDEO 2 (VIDEO)
Press “VIDEO 2” to choose VIDEO connector.
15
KEYSTONE +
Adjust the image to compensate for distortion caused by tilting the projector.
16
D.ZOOM
Zoom out or Zoom in the projector display.
17
Four Directional Select Keys
18
RE-SYNC
19
SOURCE-LOCK
Use to select items or make adjustments to your selection. Automatically synchronize the projector to the input source. This function detects the input signal automatically. When finding a signal, the search will stop.
20
VOLUME +/-
Press “SOURCE” to choose RGB, Component, S-Video and Composite sources. Press “MENU” to launch the Onscreen display (OSD), back to the top level of OSD for the OSD main menu operation
Increase/decrease speaker volume.
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Bottom Cover Dimension
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1-4 Remote control battery installation - Press firmly and slide the battery cover off.
- Install new battery (CR2025 type battery)into the compartment.Ensure that the side with a “+”
- Install new battery into the compartment.
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1-12
Chapter 2
Disassembly Process 2-1 Equipment Needed & Product Overview 1. Screw Bit (+): 105 2. Screw Bit (+): 107 3. Screw Bit (-): 107 4. Hex Sleeves 5 mm 5. Tweezers 6. Projector * Before you start: This process is protective level II. Operators should wear electrostatic chains. * Note: - If you need to replace the main board, you have to record the lamp usage hour.
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2-2 Disassemble Lamp Cover Module 1. Loosen 2 screws (as red circle) on the Lamp Cover.
2. Disassemble the Lamp Cover Module and tear off the Aluminum foil.
2-3 Disassemble Lamp Module 1. Loosen 2 screws (as red circle) on the Lamp Module.
2. Take off the Lamp Module.
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2-4 Disassemble Top Cover Module 1. Unscrew 2 screws (as red circle) from the Bottom Cover. 2. Unscrew 2 screws (as green circle) from the IO Cover . 3. Remove the Top Cover Module. Note:When you disassemble the top cover, please pay attention to the tenons(as yellow square).
2-5 Disassemble Zoom Ring Module 1. Unscrew 7 screws (as red circle) from the Top Cover Module. 2. Remove the Zoom Ring Module.
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2-6 Disassemble Keypad Board Module 1. Unscrew 4 screws (as red circle) to disassemble Keypad Board Module. 2. Tear off 2 EMI gaskets from Keypad Board Module. 3. Separate Keypad Button from Top Cover Module.
2-7 Disassemble Top Shielding 1. Unscrew 9 screws (as red circle). 2. Disassembled the Top Shielding.
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2-8 Disassemble IO Cover 1. Unscrew 4 hex screws (as red circle). 2. Unfasten 2 tenons (as yellow square). 3. Disassembled the IO cover. Note:Take care the tenons when you disassemble the unit.
2-9 Disassemble Main Board Module 1. Unscrew 3 screws (as red circle). 2. Unplug 1 connector (as green square) of Color Wheel. 3. Unplug 6 connectors (as orange square).
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Please refer to the table as below for details of each connector.
F
Male Connector on Main Board
Item
E
D
The key feature
A
Lamp Driver
Black wire tube (5 pin)
B
Fan
Compose of Red/Yellow/Black Wire (3 pin)
C
Blower
Compose of Red/Black/White Wire, white connector and Black wire tube (3 pin)
Photo Sensor
Compose of Red/Black/White Wire, red connector and Black wire tube (3 pin)
E
IR
Compose of Red/Black/White Wire, green connector and Black wire tube (3 pin)
F
Speaker
Compose of Red/Black Wire and Black wire tube (2 pin)
D
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C B
A
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4. Unplug 1 connector (as yellow square). 5. Remove the Main Board.
2-10 Disassemble Main Board Shielding
1. Unscrew 2 screws (as red circle). 2. Disassemble the Main Board Shielding.
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2-11 Disassemble Front Cover Module and IR Sensor Board 1. Unscrew 1 screw (as red circle). 2. Unfasten 2 tenons (as green square). 3. Remove the Front Cover Module. 4. Unfasten 2 tenons (as green square) to disassemble the IR Sensor Board and IR Cover. Note: - Take care the tenons when you disassemble the unit.
IR Sensor Board
IR Cover
2-12 Disassemble Engine Module 1. Unscrew 4 screws (as yellow circle) to disassemble the Engine Module.
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2-13 Disassemble Color Wheel Module 1. Unscrew 2 screws (as red circle) to disassemble the Color Wheel Module. 2. Unscrew 1 screw (as blue circle) to disassemble the Photo Sensor Board from the Color Wheel Module. Note: - Avoid touching the glass parts of color wheel.
2-14 Disassemble DMD Chip and DMD Board 1. Unscrew 2 screws (as red circle) to disassemble the Heat Sink and DMD Module.
2. Rotate the screw counterclockwise (as yellow circle) to disassemble the DMD Board and DMD Chip. Note: - Avoid touching the DMD Chip when you disassemble it. -F ound that the DMD Chip has scrapes or dirt use of a magnifying glass, you may use an electrostatic ion gun to clean it.
- Pay attention to the fixed position when assembling the DMD Chip. BS275/BX275
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2-15 Disassemble Focus Ring
1. Unscrew 3 screws (as red circle) to disassemble the Focus Ring.
Focus Ring
2-16 Disassemble Fan Module and Thermal Switch 1. Unscrew 3 screws (as red circle). 2. Unscrew 1 screw (as orange circle). 3. Disassembled the Fan Module.
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4. Unscrew 4 screws (as blue circle) to disassemble the Fan Shielding and Fan. 5. Unscrew 1 screw (as green circle) to disassemble the Thermal Switch.
Thermal Switch
Note: - Take the Fan Module as the right gesture.
the right gesture
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2-17 Disassemble Blower Module 1. Unscrew 3 screws (as red circle) to disassemble the Blower Module. 2. Seprate the Blower and Blower Rubber.
2-18 Disassemble LVPS Module
1. Unscrew 6 screws (as red circle). 2. Unplug 3 connectors (as yellow square). 3. Cut off the cable tie (as green square). 4. Disassemble the LVPS Module, AC Inlet Bracket and LVPS to MB cable.
AC Inlet Bracket LVPS to MB cable
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Note: when you assemble the unit must do actions as below: 1. Use the cable tie to pierce the first hole of LVPS for binding the Interlock Switch and Lamp Driver to LVPS cable (as blue square). 2. Use clamp to fix the Lamp Driver to LVPS cable (as orange square).
2-19 Disassemble Lamp Driver 1. Unscrew 1 screw (as red circle) to disassemble the Lamp Driver Module.
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2. Unscrew 4 screws (as yellow circle). 3. Unplug 3 connectors (as blue square). 4. Disassemble the Lamp Driver and Lamp Driver Holder.
Lamp Driver
Lamp Driver Holder
2-20 Disassemble Interlock Switch 1. Unscrew 1 screw (as red circle) to disassemble the Interlock Switch.
Note: Make sure the Interlock Switch cable be wedged fillister as the picture shown.
Interlock Switch
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2-14
2-21 Disassemble Bottom Shielding 1. Unscrew 3 screws (as red cricle) to disassemble the Bottom Shielding.
2-22 Disassemble Speaker 1. Unscrew 2 screws (as yellow circle) to disassemble the Speaker.
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2-23 Disassemble Bottom Cover Module 1. Unscrew 3 nuts (as red circle) to remove the rubber adjust foot.
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2-24 Rod Adjustment 1. Environment Adjustment - The distance between the engine and the screen is 2.4 M. - This process should be done at a dark environment (under 2 Lux). 2. Procedure Adjustment - Change the screen to "white screen". - Adjust the screws by using the rod on the engine module to readjust the image. Screw2 Screw1
("screw 1" should be adjusted first, and then "screw 2". Adjust until the yellowish or bluish parts disappeared.) 3. Abnormal image inspection - It should not have any abnormal color at the rim of the image by estimating through the eyes.
Z type driver
Note:To avoid over adjusting the rod. After the operation, please use the glue to fix the screws.
please refer to the blow table for rod adjustment:
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2-17
Adjustment Part
Screw direction
Screen State Initial state
State after adjusting
Description
Right(tighten direction)
When the right color band appeared,rotate scew1 clockwise,then the color band disappeared.
Lift(loosen direction
When the left color band appeared,rotate scew1 anti-clockwise,then the color band disappeared.
Right/Left screw1
When the bottom color band appeared,rotate scew2 clockwise,then the color band disappeared.
Right(tighten direction) Up/Down screw2
When the top color band appeared,rotate scew2 anti-clockwise,then the color band disappeared.
Lift(loosen direction
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2-25 Re-write Lamp Usage Hour 1.Press "Menu",when "OSD" is displayed. - Use “Left” or “Right” key to select "OPTIONS" . - Use "UP" or "DOWN" key to select "Lamp settings",then press"OK". - Use"UP" or "DOWN" key to select "Eco Mode". - Use“Left” or “Right” key to select "on"or"off",then press "OK". 2. Get into service mode. - Press Power --> Left --> Left --> Menu to get into service mode. - Use “Down” key to select “Exit" - Use “Left” or “Right” key to re-write the Normal Lamp hour or Eco Lamp hour. Note:"Eco Mode" status is"on",you can Rewrite Eco Lamp Hour. "Eco Mode"status is"off",you can Re-write Normal Lamp Hour.
3. Choose “Exit”, press “OK” to exit service mode. Note: Reset the lamp hour counter after replacing the lamp.(as red square) Left key = decrease lamp hour Right key=increase lamp hour
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Chapter 3
Troubleshooting 3-1 LED Lighting Message
Message
Standby (Input power cable)
Power-LED Green
LED LAMP (Red)
Amber
TEMP (Red)
O O
Normal (Power on)
Powering up (Warming up)
Flashing
O
Power off (Cooling-I: It can’t accept any key at this status)
Flashing
O
Power off (Cooling-II: It can accept power key to turn on the projector)
O
Flashing
Error (Lamp failed)
O
O
Error (Fan lock)
O
O
O
Error (Over temp.)
O
O
O
O Flashing
Note:Steady by=> No light=>O BS275/BX275
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3-2 Equipment Needed 1. Projector 2. PC (Personal computer) 3. DVD player 4. Screw drivers 5. VGA cable, power cord, S-video cable,Video-cable, audio cable, 6. Voltage test meter 7. Oscilloscope
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3-3 Main Procedure
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3-4 Power troubleshooting
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Power troubleshooting
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3-5 Image troubleshooting
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Image troubleshooting
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Image troubleshooting
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Image troubleshooting
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3-6 Audio Troubleshooting ���������������
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3-7 Remote Troubleshooting
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Chapter 4
Function Test & Alignment Procedure 4-1 Test Equipment Needed - IBM PC with HDTV resolution - DVD player with Multi-system, equipped “Component”, “Composite”, “S-Video” and “HDMI”. - HDTV Source (720P, 1080P, 1080i) - Minolta CL-100 - Quantum Data 802B or CHROMA2327 (Color Video Signal & Pattern Generator)
4-2 Service Mode 1. Turn on the projector 2. Press “Power”, “Left”, “Left” and “Menu” buttons sequentially on keypad to get into service mode.
4-3 OSD Reset After final QC step, we have to erase all saved change again and restore the default setting: (1) Please get into OSD menu. (2) Execute “OSD reset” function under “Options”.
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4-4 Factory Fan RPM Reset After replace main board, fan or upgrade system FW, you need to do:
Picture A
1. Plug in the power cord, hold on "left" button then press "power" button, when the power LED lighted green, Temp LED and Lamp LED lighted red about one second, loosen "left" button.
Picture A
2. After the “Logo” disappeared, Picture A will be shown. 3. After several minutes, you can check the fan RPM as red circle. a.Please get into Service Mode (refer to 4-2) b.Select “Thermal Settings”, then press “OK”, Fan detail information will be shown. Note: 1.The steps must be finished in 50 seconds after powering on projector. 2. If the factory fan Value don’t show in service mode,please repeat the step 1,2 again.
4-5 Test Condition - Circumstance brightness: Dark room less than 2 lux.
- Inspection distance: 0.5m~1.0m functional inspection. - Screen size: 60 inches diagonal. - After repairing each unit, a Run-in test is necessary (refer to the below table). Symptom Normal repair NFF Auto shutdown
Run-in Time 2 hours 4 hours 6 hours
Get into Burn-In Mode * Cycle setting is based on the defect symptoms. ie: If it is NFF, the run-in time is 4 hours. You have to set the lamp on for 50 min. and lamp off for 10 min for 4 cycles. Press power > Left > Left > Menu buttons sequentially on remote controller to get into service mode Choose Burn-In Test > enter Lamp On
Press right key to adjust the time (50)
Lamp Off
Press right key to adjust the time (10)
Set burn in cycle
Press right key to adjust the cycle
After setting up the time, choose “Get into Burn-In Mode” and press enter BS275/BX275
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Screen Defects (While replacing DMD Chip, DMD Board and Main Board)
Frame
< Figure: Zone A, Zone B & Frame(as green line) Definition, Active area=Zone A+ Zone B >
Defect specification table Order
Symptom
Pattern
Criteria
1
Bright pixel (dots)
Gray 10 pattern
A+B≤1
2
Dark pixel (dots)
White pattern
A+B ≤ 6
3
Bright blemish
Gray 15 pattern
A+B ≤ 10
4
Dark blemish
Blue 60 pattern
A+B ≤ 10
5
Bright dot on frame
Gray 10 pattern
≤1
6
Unstable pixel
White & Black pattern
A+B ≤ 1
7
Adjacent dark pixel
White & Black pattern
A+B = 0
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4-6 Test Inspection Procedure Update FW Version Update (refer to chapter 5) Color Wheel Index (refer to chapter 4-9)
Main Board
FW
V
V
V
Rod module
Fan
V
Lamp counter reset (refer to chapter 2-25)
V
PC Calibration (refer to chapter 4-9)
V
V
Video Calibration (refer to chapter 4-9)
V
V
V
V
OSD Reset (refer to chapter 4-3) Re-write Lamp Hour Usage (refer to chapter 2-25) EDID (refer to chapter 6) ROD Adjustment(refer to chapter 2-24) Factory Fan RPM Reset (refer to chapter 4-4)
Change Parts Color Lamp Engine wheel module module
V V V V
V
V
V
Note: - If Color appears abnormal after changing Main Board Module, please do Color Wheel index adjustment. - After changing parts, check the information above table.
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4-7 PC MODE For BS275, the native resolution of test signal is 800x600@60HZ. BX275, the native resolution of test signal is 1024x768@60HZ - We take BS275 for example here.
1. Frequency and tracking boundary Procedure
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz
- Test Pattern: general-1 or master
- Check and see if the image sharpness is well
General-1
performed.
- If not, re-adjust by the following steps:
(1) Select “Frequency” function to adjust the total pixel number of pixel clock in one line period.
(2) Select “Tracking” function and use right or left arrow key to adjust the value to minimize video flicker. - Adjust Resync or Frequency/Tracking/H. Position/ V. Position to the inner screen.
Inspection item
- Eliminate visual wavy noise by Resync, Frequency or Tracking selection.
- Check if there is noise on the screen.
- Horizontal and vertical position of the video should be adjustable to the screen frame.
Criteria
- If there is noise on the screen, the product is considered as failure product.
- If there is noise on the screen, use auto or manual “frequency” function or “tracking” function to adjust the screen.
- The PC mode functionally sure be workable include support format with frequency and auto detected functional will be workable.
BS275/BX275
Master
Confidential
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2. Bright Pixel Procedure
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz
- Test Pattern: gray 10
Inspection item
- Bright pixel check.
Criteria
- Bright pixel should be no more than 1 in the active zone; 1 pixel is allowed on the frame.
- Ref. Defect specification table
Gray 10
3. Dark Pixel Procedure
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz
- Test Pattern: full white
Inspection item
- Dead pixels check.
- White pattern (IRE=100)
Criteria
- The dark pixel can accept no more than 6 dark pixels.
- Adjacent pixels are unacceptable.
- Ref. Defect specification table
Full white
4. Bright Blemish Procedure
- Test equipment: video generator. - Test signal: analog 800 x 600@60Hz - Test Pattern: gray 15
Inspection item
- Bright blemish check.
Criteria
- The bright blemish should be no more than 10 under gray 15 pattern. - Ref. Defect specification table
Gray 15
5. Dark Blemish Procedure
- Test equipment: video generator. - Test signal: analog 800 x 600@60Hz - Test Pattern: blue 60
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Inspection item
- Dark blemish check
Criteria
- The dark blemish should be no more than 10 under blue 60 pattern. - Ref. Defect specification table
Blue 60
6. Focus Test Procedure
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz
- Test Pattern: full screen
Inspection item
- Focus check
Criteria
-From screen 2.6 M via visual to check the focus, look at the entire screen, focus shall be clear, crisp, and sharp over the entire surface of the display pattern. (Blur word on one of the corner after adjustment is acceptable. However, the word should at least be recognizable.)
Full screen
7. Color Performance Procedure
- Test equipment: video generator.
- Test signal: 800 x 600@60Hz, 1080i - Test Pattern: Master, 64 gray RGBW
* Please Use 800 x 600@60Hz signal & 64 gray RGBW pattern and 1080i signal & master pattern to do color performance test. Color can not discolor to purple and blue.
Inspection item
- Check if each color level is well-functioned.
- Color saturation
Criteria
- Screen appears normal. It should not have any abnormal condition, such as lines appear on the screen and so on.
- Color appears normal.
- It is unacceptable to have few lines flashing.
- RGBW should all appear normal on the screen and sort from R -G-B-W.
- Color levels should be sufficient and normal.
BS275/BX275
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64 gray RGBW
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(The unidentified color levels on both left and right sides should not over 4 color levels.)
- Gray level should not have abnormal color or heavy lines.
- If color appears abnormal, please get into service mode to do color wheel index adjustment.
4-8 Video Performance 1. CVBS Procedure
- Test equipment: DVD player
- Test signal: CVBS
Inspection item
- Video performance test
Inspection Distance - 1.8M ~2.8M Criteria
- Check any abnormal color, line distortion or any noise on the screen. Motion video
2. HDTV/ Component Procedure
- Test equipment: DVD player
- Test signal: Ycbcr/YPbPr
Inspection item
- HDTV performance test
Inspection Distance - 1.8M ~2.8M Criteria
- Check any abnormal color, line distortion or any noise on the screen.
3. Audio Test Procedure
- Test equipment: DVD Player
- Test signal: CVBS
Inspection item
- Audio performance test
Inspection Distance - 1.8M ~2.8M
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Criteria
- Check the sound from speaker
- Plug Audio cable into Audio in port, check whether “Volume” is normal.
- Adjust the volume to “0→ 9” by using the remote con troller.
- Check the sound from speaker.
- Check whether the “mute” is normal.
4. S-Video Procedure
- Test equipment: DVD player
- Test signal: S-Video
Inspection item
- Video performance test
Inspection Distance - 1.8M ~2.8M Criteria
- Check any abnormal color, line distortion or any noise on the screen.
- Check the sound from speaker.
5. 3D Test Procedure
- Test equipment: DVD Player
- Test signal:HQFS format CD
Inspection item
- 3D test
Inspection Distance
- < 6M
Criteria
The image should not appear noise, flicker, shadow, shocking, abnormal color.
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4-9 Calibration 1. Color Wheel Index Adjust Check pattern
- Test signal: 800*600@60Hz
- Test pattern: 64 gray RGBW
Procedure
- Test equipment: video generator
- Please press "Power", "Left", "Left" and "Menu" buttons sequentially to get into Service Mode.
- Adjust "Color Wheel Index" to correct the test patten.
Inspection item
- Color saturation
Criteria
- There should not have any lack of RGBW.
64 gray RGBW
- Color levels should be sufficient and normal. note: Color Wheel Index should be adjusted when the test pattern appears flashing,abnormal color,missing color.
1. PC Calibration Procedure
- Test equipment: video generator
- Once Main Board is changed, PC calibration should be done as well. (1) Test signal: 800 x 600@60Hz (2) Test Pattern: White/Black
mode.
- Note (1) Calibration pattern should be in full screen (2) Please refer to 4-2 Guide to get into service mode, then get into “ADC/DEC color”, and choose “PC Calibration”.
Inspection item
- Check if there is lines on the screen.
- Check if there is noise on the screen.
- Horizontal and vertical position of the video should be adjustable to the screen frame.
Criteria
- If there is noise on the screen, the product is considered as failure product.
- The screen appears normal, it shouldn’t appear BS275/BX275
SMPTE BAR
Confidential
4-10
any abnormal condition, such as lines and so on.
- Check if the projection is same as monitor diplayed.
2. Video Calibration Procedure
- Test equipment: video generator.
- Once main board is changed, Video calibration
should be done as well.
(1) Test signal: 480i
(2) Test Pattern: SMPTE BAR
- Note
(1) Calibration pattern should be in full screen mode.
(2) Please refer to 4-2 Guide to get into Service Mode select ‘‘ADC/DEC color’’, and choose “Video Calibration”.
Inspection item
- Color sturations
Criteria
- There should not have any lack of SMPTE BAR.Color levels should be sufficient and normal.
- There is not any abnormal lines on the image.
BS275/BX275
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4-11
4-10 Optical Performance Measure Inspection Condition - Environment luminance: 2 Lux - Product must be warmed up for 5 minutes - Distances from the screen: 2.4 M - Screen Size: 60 inches diagonal
1. Test equipment Procedure
- Please get into OSD menu, select “Lamp Setting” under “Options”, press “Enter” but ton, then select “Bright” mode.
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz
2. Brightness Procedure
- Full white pattern
- Use CL100 to measure brightness values of P1~P9.
- Follow the brightness formula to calculate brightness values.
☼ Brightness Formula
Criteria
Avg. (P1~P9)*1.1m2 • 1100 ANSI lumen
3. Full On/Full Off Contrast Procedure
- Full white pattern & Full black pattern
- Use CL100 to measure brightness values of Full white pattern
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full white pattern P5 & full black pattern B5 (see image: full white)
- Follow Contrast formula to calculate contrast values.
☼ Contrast Formula P5/B5
Note: P 5 = Lux of center in full white pattern
Criteria
B5 = Lux of center in full black pattern
• 1800:1
Full white pattern
4. Uniformity Procedure
- Full white pattern
- Use CL100 to measure brightness values of P1~P9 (see image: full white).
- Follow the Uniformity formula to calculate average values.
Full black pattern
☼ Uniformity Formula
JBMA Uniformity = Avg. (P1, P3, P7, P9) X100% P5 Criteria
• 65%
4-11 Others
Full white pattern
1. Functional Inspection Power Key
- Power key must operate smoothly.
Remote Controller
- Check whether the remote controller can work normal, “Menu”, “Left” and “Right” buttons work smoothly.
General
- All OSD functions must be checked for functionality. When OSD menu is displayed, there shall be no visible peaking, ringing, streaking, or smearing artifacts on the screen.
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4-13
Factory Default
- The factory settings (with appropriate centering, size, geometry distortion, etc.) shall be displayed upon “Recall” is selected from OSD.
Display Size
- All preset modes shall expand to full screen size using OSD Horizontal and Vertical Size controls.
Display Data Channel (DDC) - The purpose of the DDC test is to verify the DDC1/DDC2B operation of the projector and to verify Plug & Play function. Acoustic
-H igh pitch sound from cooling fan and color wheel is unacceptable.
2. Check points for exterior and print pattern Check item
Check point
Text & Pattern
Missing letters & pattern or blurry prints are unacceptable.
Exterior
Dirt, scrape, water ripples and uneven color are unacceptable.
Focus ring/ Zoom ring
Focus ring and Zoom ring should be moved smoothly.
Logo
Missing logo, missing prints and blurry prints are unacceptable
Screw
All screws sure be fixed and in right type.
Pedestal
Well-functioned
Lamp Cover
It should be locked in the correct place.
Plastic Parts
All plastic parts can not be broken and damaged. All safety and warning labels should be visible, including all contents. All interface connectors should be complete and workable. Adjust foot should be adjusted smoothly.
Safety or warning label Connector Adjust foot
BS275/BX275
Confidential
4-14
Chapter 5
Firmware Upgrade Section 1: System Firmware Upgrade 5-1-1 Equipment Needed Software: (DDP2431-RS232) - DLP Composer Lite 9.2 - Firmware (*.img) - 1510X library
Hardware: - Projector - Power Cord (42.50115G001) - RS232 Cable 9PIN to 3PIN (42.83618G001) - PC or Laptop
BS275/BX275
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5-1-2 DLP Composer Lite Setup Procedure 1. Choose "DLP Composer Lite V9.2 Setup" Program.
2. Click "Next".
3. Read "License Agreement". -C hoose "I accept and agree to be bound by all the terms and conditions of this License Agreement". - Click "Next".
4. Click "Next".
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5. Click "Next".
6. Click "Next".
7. The program is executing "installing" status.
8. Click "Finish".
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5-1-3 Get into FW mode 1. Get into Firmware mode Hold on “POWER” button and plug in the power cord. - The LED will light red and amber. - Loosen “POWER” button. - Connect projector with RS232 cable to PC. Note: - The system fan and the lamp will not operate.
2. Execute the "DLP ComposerTM Lite 9.2" file.
3. Click "Edit" and "Perferences".
BS275/BX275
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4. Click "Library". -C lick the "Browse" and navigate to the directory where you put the DLP Composer files in. - Click "1510X Library" folder. - Click "OK".
5. Click “Communications”. - Select “Serial Port”. - Select the COM Port which you are using. - Click “Configure”.
6. “Serial Port Configuration” picture will appear on the screen. - Make sure the settings are as below: (1) In “Baud Rate” item, select “115200”. (2) In “Data Bits” item, select “8”. (3) In “Stop Bits” item, select “1”. (4) In “Parity” item, select “None”. (5) In “RTS” item, select “Enable”. (6) In “CTS” item, select “Disable”. (7) Key in “4000” into “Read” and “Write” items of “Timeouts (in milliseconds)”. - Click “OK”. 7. Click “OK”.
BS275/BX275
Confidential
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6. Choose "Flash Loader". -C lick "Browse" to search the firmware file (*.img). - Click "Open".
7. Select "Skip Boot Loader Area". (select "32KB").
- Click "Reset Bus" to erase the flash memory.
8. If the FW is ready, click "Start Download" to execute the firmware upgrade. - Click "Yes".
9. Proceeding Picture.
BS275/BX275
Confidential
5-
10. It takes about several minutes, the firmware upgrade process is finished, "Download completed" will appear on the screen. -U nplug RS232 cable and power cord.
11. Check FW version. - Re-plug in power cord, then restart the unit and get into the Service mode to check the firmware version. ( To get into service mode, please press "Power", "Left", "Left" and "Menu" buttons sequentially on remote controller.)
BS275/BX275
Confidential
5-
Section 2: 8051 FW Upgrade 5-2-1 Equipment Needed Software: (N79A901R-USB) - Setup _NLINK_en - Manley USB Driver_NLINK (for N79A901R) - XXX_8051_XXX.hex Hardware: - Projector - Power cord: 42.50115G001 - USB Cable mini USB to USB (A) (42.00284G001) - NLINK Fixture - PC or Laptop
BS275/BX275
Confidential
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5-2-2 NLINK Setup Procedure 1. Choose "setup_NLINK_en.exe" program.
2. Click "Next".
3. Click "Next".
4. Click "Next".
BS275/BX275
Confidential
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5. Click "Next". - Select the additional task that you may create a desktop icon.
6. Click "Install" to begin installing NLINK Procedure.
7. Click "Finish". - Complete the NLINK setup.
8. "MCU Choose" picture will appear on the screen. - Close the picture.
BS275/BX275
Confidential
5-10
5-2-3 Manley USB Driver Upgrade Procedure 1. Set-up - Plug in the power cord, the power LED will light on red. - Connect RGB-IN Port of projector with NLINK Fixture . - Connect NLINK Fixture with PC by USB cable. (1)
2. Execute Program (1) "Found New Hardware Wiszard" picture will appear on the screen. (2)
(2) Select "Install from a list or specific location (Advanced)".
(3)
(3) Click "Next". (4) Select "Include this location in the search", then click "Browse".
(4)
(5) "Browse For Folder" picture will appear on the screen. (6) Select "TPRP1" folder in the "Manley USB Driver_N-Link" folder, then click "OK".
(5)
(6)
BS275/BX275
Confidential
5-11
(7) Click "Next".
(7)
(8) Click "Continue Anyway".
(8)
(9) Click "Finish". - "Manley TPRP1-Protocol Emulator" will appear on the picture. - Complete the USB Driver Upgrade Procedure.
Note: - If "Found New Hardware Wiszard" picture appear again, repeat step 2 to install USB Drivier.
(9)
BS275/BX275
Confidential
5-12
5-2-4 8051 Firmware Upgrade Procedure 1. Execute 8051 FW Program - Double click "NLINK V1.2" to execute NLINK program.
Note: - When we execute NLINK program, the power LED and Fixture LED flash red.
2. Choose the right type of MCU - "MCU Choose" picture will appear on the screen, select "N79A901R". - Click "OK". 3. Choose 8051 file (*.hex) - "Manley Nlink" picture will appear on the screen. - Ensure "MCU" is the one you chose in the last step (as green square). - Click "Open". - Select the 8051 file where you put the file in, then click "Open". 4. Program settings - Ensure NLlNK Fixture and PC are securely connected: the indicator lights on green, and the state is "Connect" (as blue square). - Select "Internel RC(11.0592MHz)" (as green square). - Click "Erase/Write(W)" to execute 8051 FW upgrade.
BS275/BX275
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5. Finish - When 8051 FW upgrade process is finished, "Write Chip success" will be shown.
6. Check 8051 FW version - Turn on the unit and get into the service mode to check the 8051 FW version. (To get into service mode, please press "Power", "Left", "Left" and "Menu" buttons sequentially on remote controller.)
BS275/BX275
Confidential
5-14
Chapter 6
EDID Upgrade
6-1 EDID Introduction
Extended Display Identification Data is a VESA standard data format that contains basic information about a display device and its capabilities, including vendor information, maximum image size, color characteristics, factory pre-set timings, frequency range limits, and character strings for the monitor name and serial number. The information is stored in the display and is used to communicate with the system through a Display Data Channel (DDC), which sites between the display device and the PC graphics adapter. The system uses this information for configuration purposes, so the monitor and system can work together. Note: - If a display device has digital input ports, like DVI or HDMI, but without EDID in its Main Board, the display device will show no image while the input source is digital signal. - The EDID Upgrade procedure for BS275 is the same as BX275, we take BS275 for example here.
BS275/BX275
Confidential
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6-2 Equipment Needed Software - EDID Program - EDID File (*.ini) Hardware - Projector - Power Cord for Projector (42.50115G001) - VGA Cable (42.87305G102) - Generic Fixture (80.00001.001) for EDID Key-in (Fixture: JP3 must be closed) - RS-232 9 Pin Cable (pin to pin, F-M) (42.83C07G001) - Power Adapter (42.50115G001) - Monitor - PC
BS275/BX275
Confidential
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6-3 Setup Procedure (VGA) 1. Connect all ports
RS232 Cable P1
(1) Connect P1 of fixture with COM Port of PC/Laptop by RS232 Cable. (2) Connect P3 of fixture with RGB-IN Port of projector by VGA Cable. (3) Plug Power Adapter to JP1 of fixture.
Adapter JP1
JP3 P3 VGA Cable
(5) Power on fixture. (6) Plug Power Cord to projector. Note: -You must confirm that the JP3 is closed in all procedure.
6-4 EDID Key-In Procedure 1. Execute EDID Program - Double click "EDID" to execute EDID program.
BS275/BX275
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2. Process (1) Select the COM Port which you are using.
(2)
(2) Click "Model".
(3)
(3) Select the EDID file (*.ini).
(4)
(4) Click "Open".
(1)
(5) Key in the Serial Number into the Barcode blank space. (6) In "Write Source Select" item, select "VGA". (7) Click "Program". (5)
(7)
(6)
3. Change the cable to VGA - When the message "Please change the cable to VGA" appears on the screen, click "OK".
BS275/BX275
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4. When the EDID program is completed, a message "OK" will appear on the screen.
5. Read EDID "VGA" information - In "Read item", select "Analog" and "Trans", then click the "Read".
6. EDID information will show the result.
BS275/BX275
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Appendix A (Exploded Image) Note: This chapter is only designed to show the exploded image of the projector. For updated part numbers, please refer to RSPL report.
23
24
30 29
25
28
1
22
27
26 21
33 20 19 18
2 3 4 5 6
31 32
7 17
5
8 9 10 16 15 14 13
11 12
Confidential
P/N
LG P/N
Description
51.8HC01G001
COV30352901
TOP COVER MN3600H BLACK BS275
51.8HC01G011
COV30353001
TOP COVER MN3600H BLACK BX275
v
2
80.8CP05G001
COV30386901
PCBA IR SENSOR BD FOR X1161
v
v
3
51.8CS03G012
COV30352801
FRONT COVER FOR IR PC MN3600H BLACK ES526
v
v
49.8CP02G003
COV30352501
SUNON 70*70*20mm AXIAL FAN, SHRINK TUBE, WIRE
v
v
Item 1
4
BX275
BS275 v
LENGTH 155mm
5
80.8LP04G001
COV30387002
PCBA PHOTO SENSOR BOARD FOR ES526X PROJECOR
v
v
6
70.8HC09GR01
COV30353501
ASSY COLOR WHEEL MODULE BS275, BX275(SERVICE)
v
v
7
70.8HC10GR01
COV30388201
ASSY ROD MODULE BS275, BX275(SERVICE)
v
v
8
49.8CS01G002
COV30352601
SUNON 45*20mm GB1245PKV1-8AY, F TYPE BLOWER
v
v
9
70.8CQ14GR01
COV30386401
ASSY LAMP DRIVER MODULE X1261 3D (SERVICE)
v
v
10
49.8CQ01G001
COV30386301
SPEAKER 2W 16OHM DAB128 90mm X1261
v
v
11
SP.8HF01GC01
COV30389301
LAMP MODULE FOR PROJECTOR Z15-XGA/Z15-SVGA
v
v
12
70.8HC12GR01
COV30389001
ASSY LAMP COVER MODULE BS275, BX275(SERVICE)
v
v
13
52.8EH05G001
COV30353101
RUBBER ADJUST FOOT ES526
v
v
14
51.8CS02G001
COV30352701
BOTTOM COVER PC MN3600H BLACK PDG-DSU30
v
v
15
75.8AA04G001
COV30386601
BUY ASSY INTERLOCK SWITCH 1409X
v
v
16
75.8CP03GP01
COV30386701
LVPS 180W X1161 STB<1W CT-258C
v
v
17
70.8HC11GR01
COV30388601
ASSY IO COVER MODULE BS275, BX275(SERVICE)
v
v
18
70.8HC13GR01
COV30353302
WHOLE ASSY ENGINE MODULE 800*600 8HC(SERVICE)
70.8HF05GR01
COV30353303
WHOLE ASSY ENGINE MODULE 1024*768 8HF(SERVICE)
v
19
80.8CP02G001
COV30386801
PCBA DMD BOARD FOR X1161
v
20
48.8CQ01G003
COV30387401
0.55" XGA 2xLVDS SERIES 450 DMD -8 TI 8060-603cB
v
48.8EH01G001
COV30387501
0.55" SVGA 2xLVDS SERIES 450 DMD -8 TI 8060-603cB
v
80.8HC01G003
COV30387301
PCBA MAIN BD FOR LGE BS275 NEW PHOTO SENSOR
v
80.8HF01G003
COV30387102
PCBA MAIN BD FOR LGE BX275 NEW PHOTO SENSOR
v
22
42.00304G001
COV30386101
FFC KEYPAD TO FORMATTER BD 16P P=0.5 122mm HD80
v
v
23
80.8HC03G001
COV30387201
PCBA KEYPAD BD FOR LGE Z15-SVGA PROJECTOR
v
v
24
52.8HC01G001
COV30353201
KEYPAD RUBBER FOR BS275, BX275
v
v
42.50115G001
COV30386201
CABLE POWER CORD 1.8M SP30+IS14 US
v
v
42.00110G011
COV30385801
CABLE POWER CORD 1.8M SP-62/IS-14 UK DIS-WARNING
v
v
v
v
21
25
v
v
LABEL 42.00120G011
COV30385901
CABLE POWER CORD 1.8M SP-023/IS-14 EUROPE DISWARNING LABEL
42.00191G001
COV30386001
CABLE POWER CORD 1.8M SP-022/IS-14 KOREA
v
v
26
55.8HC01G001
COV30392401
CARTON AB FLUTE 18KG 395*163*312MM BS275
v
v
27
75.8FL03G001
COV30389201
8FL LENS CAP MODULE
v
v
28
36.8HF01G001
SAC30666021
USER'S GUIDE MULTILINGUAL (CD) BS275/BX275
v
v
29
36.8HF02G001
MBM36259605
WARRANTY CARD EU 9L FOR LG
v
v
36.8HF03G001
3840TWL005J
WARRANTY CARD INDONESIA FOR LG
v
v
36.8HF04G001
3840TWL005B
WARRANTY CARD KOREA FOR LG
v
v
36.8HF06G001
MBM36259609
WARRANTY CARD TURKEY FOR LG
v
v
30
45.8HC01G001
COV30392301
REMOTE CONTROLLER FOR LGE BS275&BX275
v
v
31
85.1A126G080
COV31453101
SCREW PAN MECH M2.6*8 Ni
v
v
32
51.8HH17G001
COV31453201
PHOTO SENSOR BD SPACER UF65
v
v
BS275/BX275
Confidential
Appendix B I. Serial Number System Definition Serial Number Format for Projecto
Y
MM RR CC SSSSS
1
2
3
4
5
1:
Y = YEAR(Last digit of Year) (ex:2010 = 0)
2:
MM =Month(Jan = 01,Feb =02,...Dec=12)
3:
RR =Site code for each production factory (For Coretronic:CT)
4:
CC =Code is self-produced by coding program.
5:
SSSSSS = Serial code (00001~09999)
EX: This label "003CTCC00001” represents the serial number for LG. It is produced in China Coretronic on March, 2010. Its serial code is 00001.
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II.
PCBA Code Definition
PCBA Code for Projector
A B 1
XXXXXXXXXX
2
3
1
:
ID
2
:
Vendor Code
3
:
P/N
4
:
Revision
5
:
Date Code
6
:
S/N
C 4
XXX 5
EEEE 6
BS275/BX275 Confidential
Appendix C New photo sensor board Reworking SOP Note: 1.This procedure only for reworking old photo sensor(80.8EG04G002) to improve auto shutdown, image flicker issue 2. The new photo sensor(80.8LP04G001) board must match with new main board The PN of new main board of BS275 is 80.8HC01G003 The PN of new main board of BX275 is 80.8HF01G003 3. For main board rework, refer to chapter 2 (2-1~2-9)for details
1. Parts Required Coretronic P/N
LG P/N
80.8LP04G001
COV30387002
PCBA PHOTO SENSOR BOARD
Description
Quantity 1
85.1A126G080
COV31453101
SCREW PAN MECH M2.6*8 NI
1
51.8HH17G001
COV31453201
PHOTO SENSOR BD SPACER
1
2. Disassemble Photo Sensor Board 1).Unscrew 1 screw (as blue circle) to disassemble the photo sensor board from the Color Wheel Module.
BS275/BX275
Confidential
3. Assemble New Photo Sensor Board
1). Add “spacer with tape” to new photo sensor board (as below picture shows). 2). Assemble new photo sensor board on color wheel module. Note: When fix photo sensor screw, photo sensor board must be placed on color wheel bracket horizontally.
BS275/BX275 Confidential