PTS 920 Service Manual 1.0

Manufacturer: OPTOPOL Technology Sp. z o.o. Żabia 42 Street 42-400 Zawiercie Poland +48 32 6709173 ext. 230 [email protected] www.optopol.com

Automated Perimeter PTS 920/ PTS 920BY Service Manual Rev.1.0 (05-01-2016)

For distributors use only (trained personnel)

0 Optopol Technology PTS 920/ PTS 920BY Service Manual

Revision number 1.0

Description/page Manual creation. First release

Date of change N/A


Entered by Tomasz Pardel

Approved by Marek Miśta

Date of issue 2016-01-05

Make sure you read this manual carefully before starting any repairs.

Copyright © 2016 Optopol Technology Sp. z o.o. All right reserved.

Trademarks Windows is Windows is registered trademark trademark of Microsoft Corporation. Corporation.

Intel® Core is registered trademark of Intel Corporation. All other trademarks trademarks used in this document document are the the property of their their respective owners. owners.


CONTENTS 1.

Symbol Symbol informati information on............................................ .................................................................. ............................................ ............................................ ...................... 5

2.

Introducti Introduction on ............................................ .................................................................. ............................................ ............................................ ................................. ........... 6

3.

Technical Technical data ............................................. ................................................................... ............................................ ............................................ ............................. ....... 8

4.

Minimum Minimum system requiremen requirements ts ............................................ ................................................................... ............................................. ......................... ... 9

5.

Unpacking Unpacking and installati installation........ on.............................. ............................................ ............................................. .............................................. ......................... .. 9 5.1. Safety standards. ..................................................................................................................10 5.2. Installation Safety ........................................................... ................................................................................................................. ...................................................... 11 5.3. Connection ........................................................... ............................................................................................................................ .................................................................12 5.4. External components ................................................................. ........................................................................................................... .......................................... 13 5.5. Software installation and configuration ......................................................... ............................................................................. .................... 14 5.5.1. Screen resolution ................................................................... ............................................................................................................. .......................................... 14 5.5.2. Installing PTS 920/PTS 920 BY software and drivers in Windows 7/8 ............................. 14 5.6. Activating the application application.......................................................... ..................................................................................................... ........................................... 20 5.7. Closing PTS 920/PTS 920 BY . ...........................................................................................20

6.

Basic PTS 920/PTS 920 BY perimeter maintenance. ............................................................. 21 6.1. Cleaning the PTS 920/PTS 920 BY perimeter . ................................................................21 6.1.1. Cleaning the enclosure.................................... enclosure..................................................................................................... .................................................................21 6.1.2. Cleaning the bowl .................................................................. ............................................................................................................ .......................................... 21 6.1.3. Cleaning the application parts .......................................................... ......................................................................................... ............................... 21 6.1.4. Assembling the chin rest ................................................................... .................................................................................................. ............................... 21 6.1.5. Fuse replacement.............................. replacement.................................................................................................... ............................................................................... ......... 22

7.

Troublesho Troubleshooting oting ............................................. .................................................................... ............................................. ............................................ ........................ 23

8.

Maintenanc Maintenance e check procedure. procedure. ........................................................ ............................................................................... ................................... ............ 24

9.

Device Device opening. opening.......................................................... ................................................................................ ............................................. .................................. ............ 25 9.1. Back cover removal. .............................................................................................................25 9.2. Back cover assembly. ............................................................... .......................................................................................................... ...........................................29 9.3. Headrest removal / replacement. .......................................................................................31 9.4. Front cover removal. .................................................................. ............................................................................................................ .......................................... 34 9.5. Front cover assembly. .............................................................. ......................................................................................................... ........................................... 38 9.6. Bottom cover removal/ chinrest belt replacement ...........................................................40 9.7. 41

10. Modules Modules replacement replacement.. ............................................ .................................................................. ............................................ ...................................... ................ 42 10.1. Camera Replacement and calibration. . .............................................................................42 10.2. Lens holder replacement . ..................................................Błąd! Nie zdefiniowano zakładki. ........................................................................................... ............................... 51 10.3. Chinrest Module Replacement ............................................................ 10.4. Chinrest module repair ...................................................... ......................................................Błąd! Nie zdefiniowano zakładki. 10.5. Chinrest module opt-detectors replacement replacement ........................................................... .................................................................... ......... 56 10.6. Main Board Replacement. .................................................Błąd! Nie zdefiniowano zakładki. 10.7. Power supply module replacement ................................. Błąd! Nie zdefiniowano zakładki. 10.8. Background illumination module replacement ............... Błąd! Nie zdefiniowano zakładki. 10.9. Fans replacement ........................................................... ............................................................... ....Błąd! Nie zdefiniowano zakładki. 11. Device Device calibratio calibration. n. .......................................... ................................................................. ............................................. ............................................ ........................ 67 11.1. Calibration Calibration set: ................................................................. ...................................................................................................................... .....................................................68 3 Optopol Technology PTS 920/ PTS 920BY Service Manual

11.2. Examination bowl LED test...................................................................................................... 69 11.3. Calibration procedure (checking device parameters) ... Błąd! Nie zdefiniowano zakładki. 11.4. Background illumination check and calibration ................................................................74 12. Spare parts list. .................................................................................................................. 77


1. Symbol information

CAUTION

Follow operating instruction

WARNING – Dangerous voltage

General warning sign

Indicates a fuse is present near this symbol

On / Off

Type B Applied Parts

Date of manufacture

Manufacturer

Electrical and Electronic Equipment waste. Do not throw the product away with a normal household waste at the end of its life.

Sign conformity with essential requirements – The Medical Device Directive 93/42/EEC.


2. Introduction Purpose of this Instruction Manual This manual provides support and information to service personnel during malfunction, diagnosis and device repair. Service manual is not a material for self-training. All described actions can be performed by trained personnel only. Exceptions must be confirmed by Optopol Service division by e-mail or phone conversation Intended User All service actions are allowed for trained personnel with certificate issued by Optopol Technology service division. The minimum knowledge Technician must be able to read service manual in English, to read electrical diagrams and must be efficient manually.

Occupational Skills The user should be able to work with electrical devices. Disposal For disposal at the end of the product life cycle (10 years since production date), please follow national regulations. CAUTION: Do not use this instrument other than intended and specified. Device identification In case of any failure reports it is necessarily to specify the device serial number. This number is printed on a label in the back of the device. See example below

Second serial number location is the PTS software. Serial number is displayed in the bottom left corner in software Patient tab.


Product Compliance

Complies with The Medical Device Directive 93/42/EEC .

Product Safety Protection against electric shock Degree of protection against electric shock Mode of Operation Oxygen Rich Environment in


Class I Type B Continuous Operation This instrument is not suitable for use in high oxygen environment

3. Technical data Simulator Bowl Type

Spherical, according to Goldmann’s standard, radius 30 cm

Field range (blue stimulus)

Left-right: 100° (60°) Up-down: 100°(60°)

Field range (fixation offset)

Left-right: 160° Up-down: 100°

Stimuli

Green, Goldman III: 575 nm Blue, Goldman III: 465 nm ( only PTS 920 BY )

Stimuli brightness

Green: 0.03 – 1000 asb Blue: 0.02 – 650 asb (only PTS 920 BY )

Dynamic range

48 dB

Brightness resolution

1 dB

Background

White (green stimuli) – 10 asb (3.15 cd/m ) – automatic stabilization Yellow (blue stimuli) – 314 asb (100 cd/m 2) – automatic stabilization (only PTS 920 BY )

Stimuli exposure Adjustable within the range of 0.01s to 9.9s or adaptable time Reaction time

Adjustable within the range of 0.01s to 9.9s or adaptable

Intervals between exposures

Adjustable within the range of 0.01s to 9.9s or adaptable

Central, single (0°) Fixations

Central, 4 points

Left (30°) Right (30°) Nasal

Temple

Top range Bottom

range [°]

range [°]

[°]

range [°]

Number of points

F-50 (Full)

50

50

50

50

163

G-50 (Glaucoma)

50

22

22

22

103

C-22 (Central)

30

30

22

22

99

C-24A

30

22

22

22

58

C-30A

30

30

30

30

69

M-10 (Macula)

10

10

10

10

48

C-30 (Fast)

30

30

30

30

60

P-50 (Peripheral)

30-50

30-50

30-50

30-50

72

Designation

Redefined examination fields


E-80 (Extended) 50

80

30

30

105

BDT (Drivers)

80 (R)

40

50

120

80 (L)

Test strategies

Threshold Fast Threshold Advanced Screening 3-Zone 2-Zone BDT Flicker BSV

Size of correcting lens

38 mm

Dimensions (HxWxD)

645mm x 561mm x 385mm

Weight

12 kg

Power supply

100-120VAC 50-60Hz or 220-240V AC 50Hz

Fuses

T 315mA L 250V, 5x20mm

4. Minimum system requirements Processor RAM Operating system Hard disc drive Graphics card 3D accelerator supporting Communication ports

Intel® Core™ i3 M380 2,5GHz 2GB RAM MS Windows XP/ VISTA/7/8 100 MB free space 1024x758, 24-bit color depth (True color), OpenGL 1 x USB 2.0

Minimum monitor screen resolution for PTS 920/PTS 920 BY software is 1024 x 768 pixels and 24bit color depth (True Color).

5. Unpacking and installation PTS device package includes the following components: perimeter bowl 

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single chin rest

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double chin rest

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power cord

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response button

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USB cable to connect the perimeter to a PC

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perimeter bowl cover

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USB flash disc with drivers and software installation package


IMPORTANT NOTE: this USB flash disc contains activation code and has to be kept in safe place for future use (necessarily for software activation) To allow the electronic components inside the PTS 920 series perimeter to adjust to your institution’s ambient temperature, wait until at least one hour after the device has been delivered before plugging it in for the first time. After unpacking the PTS 920 device, confirm that all components agree with packing list. Check for any signs of mechanical damage that may have occurred in transportation(check shock watch indicator in case it’s red report it to your forwarder). In case any damage is present, do not plug in the device and contact Optopol Service Division for further instructions.

5.1. Safety standards PTS 920/PTS 920 BY Automated Perimeter can only be connected to a mains socket outlet with a properly integrated protective grounding connection. PTS 920/PTS 920 BY complies with the requirements of Directive 93/42/EEC on medical devices. PTS 920/PTS 920 BY has class B applied parts (chin rest, forehead support, response button) and is provided with class I protection against electric shock. PTS 920/PTS 920 BY Automated Perimeter is typically a part of a larger Medical System (encompassing both medical and non-medical devices). The Medical System in its entirety, and each of its components has to comply with the standard requirements laid down in IEC 60601-1 standard. This means that compliance with this standard has to be ensured by all suppliers and manufacturers of all components contained in the Medical System concerned. PTS 920/PTS 920 BY is connected to a PC via USB cable. The USB cable is electrically separated from the perimeter. This provides extra protection when PTS 920/PTS 920 BY and the connected PC are powered from different sources, through neutral conductors of non-equal potential. PTS 920/PTS 920 BY Microprocessor chip

Optical separation

USB

Power supply CCD camera Line filter

100-120V AC 50-60 Hz or 220-240V AC 50 Hz


PC system PC, screen, printer, etc. (compliant with IEC 606011)

5.2. Installation Safety You should closely follow the safety rules during installation: Where PTS 920/PTS 920 BY and the Medical System have been installed by the manufacturer or authorized personnel, the manufacturer shall safeguard correct installation and compliance with the requirements of MDD. 







Connect the device to a three-wire power supply with a grounding wire to avoid an electrical shock hazard. Make sure the position of the power supply switch on the rear panel corresponds to the mains voltage and frequency: “115V” is for 100-120V AC50-60Hz, and “230V” is for 220-240V AC 50Hz. Do not use any extension cables and cable connectors incompatible with IEC 60601-1 standard to connect the device to the mains.



Do not connect PTS 920/PTS 920 BY to overloaded power outlets.



Do not connect any damaged cables or sockets. Contact the supplier for assistance.







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

While installing PTS 920/PTS 920 BY, make sure that the fan outlet under the instrument is not covered or obstructed in any way. Never place the device on uneven or inclined surface. PTS 920/PTS 920 BY should be installed in low-light conditions, rear-facing the strongest source of light. All accessories used to operate PTS 920/PTS 920 BY must be approved by its manufacturer. All PCs and other devices connected to PTS 920/PTS 920 BY must comply with the requirements of MDD.



Never install the device in humid environment.



Always use fuses which correspond to the PTS 920/PTS 920 BY specifications.





Always use certified Hi-Speed USB (USB 2.0) cables, no more than 3m long. Use of noncertified cables or extension cables can cause defective operation of the instrument and wrong measurements. Where PTS 920/PTS 920 BY and any peripheral devices are connected in a manner not specified in this manual or where the instrument has not been installed by PTS 920/PTS 920 BY manufacturer or authorized technicians, the manufacturer cannot be held liable for any infringements of the general safety instructions and the existing standards.



PTS 920/PTS 920 BY can only be used with device approved for IEC 60950 at least any other case the patient may be subjected to electrical shock.


Do not hold or carry the perimeter bowl by the hole in it. This can cause damage to the equipment.

After unpacking, make sure you have all parts. Check whether or not the device is mechanically damaged in a visible way. If the device is damaged, do not switch the perimeter on and contact the manufacturer without delay.

5.3. Connection If the device has been kept at low temperature conditions, wait for at least an hour before the temperature of the device increases to the ambient temperature in the room where the device is installed. Otherwise vapor condensation may damage the equipment. Follow this procedure to install the device: Place the device on a solid and stable surface. 



Assembly a single or double chin rest on the chin rest mechanism.



Connect the response button to the inlet socket on the rear panel.



Connect the device to a PC via USB cable. Make sure the position of the power supply switch on the rear panel corresponds to the mains voltage and frequency: “115V” is for 100 - 120V AC50- 60Hz, and “230V” is for 220 -240V AC 50Hz.





Connect the power cable into a power socket with a properly integrated protective grounding connection. Switch the power on by pressing the power button over the power socket on the rear panel.


Forehead support Trial lens holder

Chin rest (applied part)

Response button (applied part)

PTS 920/ PTS 920BY device overview

5.4. External components Surge protectors Optopol Technology recommends using a surge protector or uninterruptible power supply (UPS) with PTS 920/PTS 920 BY. The device will be protected against electricity disruptions.

PC All devices connected to PTS 920/PTS 920 BY, and particularly the computer set, should meet safety standards for medical devices according to Directive 93/42/EEC.

Printers Reports should preferably be printed on a laser printer. Some color-coded information contained in the reports will be illegible when printed on a black-and-white printer. A printer connected to the computer set, and all other devices connected to PTS 920/PTS 920 BY through the PC (mice, other USB peripherals) should meet safety standards for medical devices according to Directive 93/42/EEC.


5.5. Software installation and configuration 5.5.1.

Screen resolution

Minimum screen resolution for PTS 920/PTS 920 BY software is 1024 x 768 pixels and 24-bit color depth (True Color). 1. Right-click the Windows desktop and go to Screen resolution. 2. Set the parameters as appropriate.

5.5.2.

Installing PTS 920/PTS 920 BY software and drivers in Windows 7/8

1. Switch the PTS perimeter bowl and the PC on. Wait until the Windows starts. Insert the memory storage to the PC. Use the USB cable to connect the PTS perimeter bowl and the PC with a USB cable. The Found New Hardware window will be displayed: USB camera and the perimeter. 2. Go to My Computer and select the disc delivered with the device to install the software, database server and drivers (it is possible to choose one of component during installation process).

3. Double click the Setup icon.


4. Click on ”

Next >” button

to continue installation process of perimeter software

5. Select “I accept the agreement” checkbox to accept the contract conditions and click the ”Next >” button

6. Select destination location and click on ” Next >” button


7. Select components you want to install and click on ”Next >” button.

8. Select the name of the folder in the Start menu in which PTS shortcuts will be residing. If you want to change folder in the Start menu, click on “ Browse” button and select the folder. To approve change, click on ”Next >” button.

9. If you want to create PTS shortcut on the desktop, select “Create a desktop icon ” checkbox.

If you want to create PTS icon in Quick Launch bar, select “Create a Quick Launch icon” checkbox. To approve change, click on ”Next >” button.


10. Check the setup summary and click ”Install ” to install the selected components. If you want to change installation settings, click on “ < Back ” button.

11. Installing the perimeter software. Wait until the process is completed.

12. Click on ”Next >” button to continue installation process of device drivers.


13. Installing the device drivers. Wait for next message.

14. If below message is shown on the screen, click “Install ” button.

15. Click on “Finish” button to complete the device drivers installation.


16. Click on “Finish” button to complete the software installation. At this point user can be asked to restart a computer.

17. Installed device drivers in Device Manager


5.6. Activating the application The application must be activated after it is started for the first time after installation. The application will not start unless it is successfully activated. Application can be only activated by the administrator of the computer system which runs the software.

Activation should be done while the first software start. Use a PTS icon on the desktop or select the program in Windows Start menu. A pop-up window will appear, click “OK”

Plug the USB flesh disc key provided with the instrument into any available USB port on the computer when the activation dialog box is displayed on the screen and click Activate

Notification about successful activation will be displayed on the screen and the application will start. If the activation fails, please contact the distributor.

For further software use instructions please refer to PTS 920/PTS 920 BY user manual (available on your USB flash installation or on Optopol Technology’s ftp server)

5.7. Closing PTS 920/PTS 920 BY To close the instrument, proceed as follows. 1. Close the PTS 920/PTS 920 BY software. 2. Switch the perimeter bowl off. If you want to restart the PTS 920/PTS 920 BY perimeter, wait a few seconds after the instrument is switched off.


6. Basic PTS 920/PTS 920 BY perimeter maintenance. All maintenance works can only be carried out after the supply of power is turned off from the perimeter bowl and the mains plug is pulled out of the socket. The PTS 920/PTS 920 BY perimeter is virtually maintenance-free during the whole life cycle of the product. Keep the external surfaces and the interior of the bowl clean. Use gentle cleaning agents. Protect the bowl and the perimeter against ingress of water and other fluids. Check from time to time whether the bowl is not mechanically damaged. Check if the mains plug is not too loose. For hygienic reasons, clean the chin rest and the forehead support with a disinfectant after each test.

6.1. Cleaning the PTS 920/PTS 920 BY perimeter 6.1.1.

Cleaning the enclosure

Clean the instrument enclosure with a soft cloth. Use cleaning agents suitable for cleaning of electronic devices.

6.1.2.

Cleaning the bowl

Clean the bowl with a soft and slightly damp cloth. Use cleaning agents suitable for cleaning of glass. Cleansers used for instrument cleaning should be fully transparent and colorless. Make sure no water gets into the interior of the instrument.

6.1.3.

Cleaning the application parts

The PTS 920 perimeter bowl has the following application parts: chin rest, forehead support, and response button. Application parts should be disinfected after each test. They should be also disinfected after an extended non-use period. The chin rest can be removed for easier disinfection as shown in the figure below.

Never reach into the interior of the bowl, unless for cleaning.

Apply the dust cover onto the instrument if not in use.

There are no parts inside the instrument which qualify for repair by the end user. Never remove the enclosure.

6.1.4.

Assembling the chin rest


See the figure below for correct assembly of the chin rest for either monocular or binocular test.

6.1.1.

Fuse replacement

If you the test sequence of stimulus size and color is not displayed in the centre of the perimeter bowl after you switch the instrument on, check if the fuses are working. Replace all damaged fuses. Fuses used in the instrument: T 315mA L 250V, 5x20mm.

Fuse

Power socket

6.1.2.

Database backup and recovery.

Software allows to create a backup files and recover examinations and patients database from backup files. In order to do so go to Settings tab and select database . Fr further instructions refer to PTS 920/ PTS 920BY user manual.


7. Troubleshooting Should you experience any problems with the operation of the PTS 920/PTS 920 BY Automated Perimeter, follow the instructions given in the table below.

Problem

Cause

“Cannot communicate No communication between PC with the device. (…)” and perimeter

No drivers installed

The central fixation is not glowing after switching the device on.

No power supply to the bowl.

How to solve Make sure the power cord of the perimeter bowl is inserted into a power outlet. Make sure the bowl is switched on (the central fixation in the bowl is glowing). Install drivers according to user manual Make sure the bowl is connected to correct supply voltage and switch the bowl on with the main switch. If the device does not start in

position ‘I’, check the fuses. The fuses are in the power outlet of the perimeter, over the plug. If this does not help see power supply module replacement chapter After switching the device on, the right fixation is glowing

The regular sound signal is heard after the device startup

The reaction button was pressed during the device startup

Make sure that the reaction stick is not pressed during the device startup

The reaction button is damaged (always short circuit)

Contact authorized service provider or Optopol Service Division

The bowl is damaged.

See service mode. Test the bowl and replace broken led. Calibrate replaced led.


8. Maintenance check procedure.

All service actions have to be performed by trained personnel only!

In order to perform a general maintenance check of PTS 920/ PTS 920BY device follow below steps:

1. Ask the user if he have had any problems. 2. Take a test examination to check if all functions are working fine. 3. Check if chinrest moves towards up and down extreme position. 4. Test if lens holder is rigid and doesn’t fall down freely itself. If so replace it to a new one. 5. Examine the bowl condition in case any mechanical damage is seen report it to Optopol Service Division (pictures should be sent by e-mail) 6. Use L100 light meter with dedicated adapter to measure stimuli and background intensity. In

case it’s off certain values see calibration chapter in this manual. 7. Test joystick functioning in case software does not react on click or its engaged permanently replace it. 8. Check software version and if available upgrade it to the latest version(available on Optopol Technology ftp server) 9. If necessarily clean device.


9. Device opening. 9.1. Back cover removal Necessarily tools: Philips head screwdriver, hexagonal tool size 2, torques tool size T20. 1. Undo 3 Philips head screws located in the back panel.


2. Lay the device on its back on soft surface- tissue or towel. Undo two screws indicated below. Use hexagonal tool size 2mm.


3. Put the device back on the bottom plate. Undo all screws holding the back cover. All are locate on the edge of the device back side

T20H screw holding back cover

4. Take the back cover away. Slide it backwards and place in secure location. 27 Optopol Technology PTS 920/ PTS 920BY Service Manual

5. Back cover view. Now the access to electrical components and most of led is possible.

6. In order order to close the device follow chapter 9.2. After 9.2. After closing test the device functionality.


9.2. Back cover assembly. Necessarily tools: Philips head screwdriver, screwdriver, hexagonal tool size 2, torques tool size T20. 1. In order to close the back cover. Place Place the device on on its front on soft soft surface. Mount the back cover so that it is possible to fit 3 back panel screws. Grab screws to the back paneltighten them at the end of closing procedure.

2. Grab all torques screws. screws. And now starting starting from the top, tighten tighten all screws one by one once from left and then from right side - one by one.


3. Tighten both screws screws at the bottom of the device. device. Make sure that all side surfaces are fitting and that no gaps are left.

4. In case of any problems with tightening both bottom screws. Remove bottom cover- see chapter 9.6 to get better access. 5. Tighten the back panel screws. 6. Test device functioning.


9.3. Headrest removal / replacement. Necessarily tools: Philips head screwdriver short one. 1. Secure the inside of the examination bowl with soft towel or tissues. This will prevent scratching the bowl surface.

2. Undo 3 screws holding the headrest pad. All are located inside the bowl.


3. Be careful not to damage the light sensor when undoing the middle screw.


4. When loosening the last screw hold the headrest pad in order not to drop it.

5. Remove the headrest pad.

6. Mount new headrest pad in opposite direction to above steps. 7. When grabbing the first screw start from the middle one and firstly insert the screw and screwdriver then fit the headrest to it and tighten.


9.4. Front cover removal. Necessarily tools: Philips head screwdriver, hexagonal tool size 2, torques tool size T20H 1. Follow chapter no. 9.1 to remove back cover. Then follow chapter 9.3 to remove headrest pad. While undoing 2 screws at the bottom plate remove two others indicated on below pictures.

1. Put the device in standing position. Disconnect the green bowl illumination cable from the CPU board in the right side of the device. Release the cable from the holder.


2. Undo all screws around the front cover on its edge.


3. Remove the front cover using two hands. Firstly spread the bottom part to the sides then slide slowly towards yourself. Place the cover in secure location.


1. Device view without the front cover.


9.5. Front cover assembly. Necessarily tools: Philips head screwdriver, hexagonal tool size 2, torques tool size T20H 1. Place the front cover on the bowl. Make sure that all edge cover screws slots meet their mounting positions - there is small regulation in right-left plain.

2. Grab all the screws so that slight cover movement is still possible. 3. Set the cover in position that gives the same gap between bottom plate and front cover on both sides.


4. Now tighten all edge cover screws. Place the device on its back and tighten two bottom screws with hexagonal tool size 2mm. In case of any problems remove bottom plate see chapter 9.6

5. Now mount the headrest - see point 6 in chapter 9.3. Close the back cover chapter 9.2. 6. Test the device functioning and make sure there are no gaps in housing.


9.6. Bottom cover removal/ chinrest belt replacement 1. Place the device on its back on a soft surface. 2. Use Philips head screwdriver to undo all 5 foot pegs. After that it is possible to remove the bottom cover.


3. Now access to the chinrest module is possible. In case you need to replace the transmitting belt loosen screws holding chinrest motor. Rotate it clockwise to loosen it and allow new belt assembly. Place new motor belt and rotate the motor counterclockwise so that the belt is tight enough.

4. Test if chinrest if functioning properly. Close the device and test its functionality.


10. Modules replacement. 10.1. Lens holder replacement. Necessarily tools: hexagonal tool size 2,5mm 1. Turn off the device and cover the device’s bowl inside with a soft cloth or paper towels to prevent bowl scratches.

2. Undo two screws holding the lens holder. Hold it while removing second crew so that it will not drop inside the bowl.

3. Mount new lens holder in opposite direction to above steps. Check device functioning 42 Optopol Technology PTS 920/ PTS 920BY Service Manual

10.2. Patient answer button holder replacement. Necessarily tools: Philips head screwdriver, hexagonal tool size 2, torques tool size T20. 1. Follow chapter no. 9.1 to remove back cover. Place the cover on soft surface to allow the access to its inside. 2. Undo two screws holding the answer button holder.

3. Replace the broken part and mount new one. If needed hold the plates inside to tight the

holder. Close the device and test it’s functioning.


10.3. Preview camera replacement. Necessarily tools: Philips head screwdriver, hexagonal tool size 2, torques tool size T20. 1. Follow chapter no. 9.1 to remove back cover. Place the cover on soft safe surface. 2. Now the access to preview camera is possible. In order to test if the camera is faulty make sure that its driver is installed properly- follow installation manual.

3. To test if connection path between Camera and device USB output is fine connect the camera cable directly to your PC and check if preview is visible (camera detected in devices manager) If camera works directly see CPU replacement chapter 10.4.

PC USB port


4. In case you confirmed camera failure disconnect it’s signal cable.

5. Use Philips head screwdriver to undo 4 screws holding the camera electric plate and remove it from the metal holder. Then undo two black screws holding the objective and swap the electronic camera board with a new one supplied by Optopol Service Division.

6. Connect camera cable and check if preview is visible in software examination tab. 7. It is recommended replacement.

to confirm if camera position hasn’t been changed after board


10.3.1. Preview camera position check/ alignment. 1. Start the device. Turn on the diagnostic software 2. Prepare the calibration lens.

3. Set a middle position of the trial lens holder, use measuring tape. Measure the distance between the edge of the holder and the frame or edge of front cover. Distance on both sides should be equal.


4. Set the distance between the camera (black spot inside the perimeter bowl) and outer lens slot in lens holder. NOTE: don’t scratch the bowl coating. Distance should be 290mm. Be careful not to scratch the bowl surface.

5. Mount the calibration lens in the outer holder. Make sure it is in horizontal position.


6. Be sure that camera driver is properly installed on your PC. Start the diagnostic

software(PTS_TESTER). Select Connect button and camera start.

7. Select camera Adjustments button to select the right settings: Gain: 105 and shutter speed: 2/15


8. If image looks like the one below(black cross does not fit the white cross in software)

camera position has to be adjusted.

9. Now move the camera gently in order to align both images so that they cover each other. Then tighten 4 outside screws. In case the angle of the view is wrong use 3 inner screws.

4 screws- position adjustment

3 screws –angle adjustment


10. Adjust the camera position till you get below view. After that tighten 4 external screws.

11. Close the back cover. Test the device functioning.


10.4. Checking PSB fuses Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2, torques tool size T20. 1. Follow chapter no. 9.1 to remove back cover. Place the cover on soft safe surface. 2. Get access to fuses in the back side of the CPU board- that is a power supply part of this board.

3. Measure both fuses if any is blown replace it with corresponding parameters and type. 4. In case fuse is being blown constantly look for short circuit on board or in cabling. 5. Close the device and test its functioning.


10.5. Electric block diagram.


10.6. CPU Module replacement Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2, torques tool size T20. 1. Follow chapter no. 9.1 to remove back cover. Place the cover on a soft safe surface. 2. Disconnect all cables going to CPU board. Unplug green/yellow grounding cable from schurter

3. Undo all plastic screws using short Philips head screwdriver


4. Connect back all cables. Turn on the device and start the diagnostic software to confirm that calibration values are proper. See calibration chapter to check. CPU board is usually programmed when shipped for replacement. In case board needs programming see CPU programming chapter. If board was programmed before close the device and test its functioning.


5. CPU board cables connectors and voltages table.

Back round illumination Examination bowl output (led signal)

Power supply Black-8,7V-white-8,7V –

USB socket

Fans 12V

Led illumination 12V USB Camera USB socket

Chinrest optocouplers


Chinrest motor 12V

CPU programming Necessarily tools: Perimeter Tool application, calibration file - supplied by Optopol Service Division 1. Turn on the device. Install the Perimeter Tool application and start it by picking the tool icon.

2. Select “Pomoc” tab and change the language to English if necessarily.


3. Connect the device by selecting Perimeter >Connect> Automated perimeter> select a COM port to which device is connected. Device serial number will appear.

4. In order to load the device calibration parameters go to Settings choose “import from file” select a file supplied by Optopol Service Division named with your device serial number.


5. Confirm importing all device parameters and saving new parameters to the CPU.

6. Close the device and test its functionality.

10.7. Chinrest module optocouplers replacement Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2, torques tool size T20. 1. Follow chapter no. 9.4 to remove front cover. Place the cover on a soft safe surface. 2. Access to optocouplers is possible from the front of the device.


3. Undo plastic screws holding both sensors. Remove them and release the cable from holders. Disconnect the gray cable connector from CPU board.

4. Mount new optocouplers set in the same way the old ones were. Put cables back to holders. Turn on the device and test chinrest functioning 5. Close the device and check its functioning. 59 Optopol Technology PTS 920/ PTS 920BY Service Manual

10.8. Fans replacement There are two fans mounted inside the PTS device. One under the CPU board and second on bowl support. Fans should be replaced when they stop working completely or start giving off an annoying sound. In order to test fans functioning use Perimeter Tool diagnostic software. Connect the device and in Controls tab select desired fan and speed.

Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2, torques tool size T20.

10.8.1. Bottom plate fan replacement. 1. Follow chapter no. 9.1 to remove back cover. Place the cover on a soft safe surface. 2. Remove CPU board. Follow chapter no. 10.5 to do so. 3. Access to bottom fan is possible. Undo 4 screws to replace the fan. Connect the cable back after CPU assembly.

4. Mount the CPU. Connect all the cables and close the device. Test its functioning .


10.8.2. Vertical fan replacement. 1. Follow chapter no. 9.1 remove front cover. Place the cover on a soft safe surface. 2. Second fan is located under the examination bowl, behind the chinrest module. 3. Access to it is limited but it’s possible using a short Philips head screwdriver. 4.

In order to replace the second fan undo all screws holding it. Release the cable holder.

5. Disconnect the fan connector from CPU board. Connect new fan and mount it in the opposite way than described above.

6. Close the device and check its functioning. 61 Optopol Technology PTS 920/ PTS 920BY Service Manual

10.9. Shurter/ power switch replacement Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2, torques tool size T20. ! NOTE: Make sure that the power cord is disconnected to avoid electric shock! 1. Follow chapter no. 9.1 to remove back cover. Place the cover on a soft safe surface. 2. Get access to schurter from the inside of the back electric panel. Disconnect all cables.

3. Undo two screws holding the power socket- access possible from the device back.


4. Replace the power switch/ shurter and mount it in the same way it was before. Connect all the cables back.

5. Close the device and test its functioning.


10.10.

Transformer replacement.

Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2;2,5, torques t ool size T20. ! NOTE: Make sure that the power cord is disconnected to avoid electric shock! 1. Follow chapter no. 9.1 to remove back cover. Place the cover on a soft safe surface. 2. Transformer is located behind the CPU board. Firstly disconnect all cables going from transformer. Cut tie wraps holding cables till power supply type switch.

3. Undo two screws holding voltage range switch. Remove it as it is a part of transformer module.


4. Undo the transformer from the vertical plate.

5. Replace it with a new one. Tighten it and connect all the cables back and mount the voltage type switch. 6. Close the device and test its functioning.


10.11.

Background illumination modules replacement.

Necessarily tools: Philips head screwdriver-short, hexagonal tool size 2, torques tool size T20. 1. Follow chapter no. 9.4 to remove front cover. Place the cover on a soft safe surface. 2. There are three boards responsible for background illumination. Middle one is equipped with light intensity sensor.

3. Disconnect cables, undo plastic screws and replace faulty modules.

4. After any background illumination module replacement a calibration has to be

performed. Check background illumination intensity calibration chapter. 5. Close the device and check background intensity. If needed perform calibration. 66 Optopol Technology PTS 920/ PTS 920BY Service Manual

10.12.

Led replacement.

Necessarily tools: Philips head screwdriver, hexagonal tool size 2, t orques tool size T20, tweezers, pliers, soldering equipment, spare led. 1. Follow chapter no. 9.1 to remove back cover. Place the cover on a soft safe surface. 2. Follow chapter no. 11.2 to test which led is faulty. Mark it by a sticky note paper and localize it on the inner part of the examination bowl (example of PTS920 BY device-there are green and blue led in each spot, PTS920 has only one green led in each spot )

3. Cut the glue and remove broken led from the bowl. Replace it with a new one by soldering the connection. Test if it works and glue the led in the same way it was before. Use two ingredients glue.

4. After led replacement go to calibration section chapter no. 11.3 and follow chapter stimuli intensity calibration to calibrate particular led intensity. 5. After calibration close the device and test its functionality. 67 Optopol Technology PTS 920/ PTS 920BY Service Manual

11. Device calibration. 11.1. Calibration set: 

PTS 920 device drivers, diagnostic perimeter tool



Sonopan L-100 luxmeter with photo sensor



CO-02P cover (for PTS 910 and Perivist Compact),



AD-01 adapter (for background calibration),



AD-02P adapter (for stimuli calibration),


11.2. Basic LED test. Necessarily tools: Patient’s reaction button. 1. In order to check if all diodes are working device needs power supply. This test is usually used when software informs about faulty led. 2. Start the device while holding patient’s answer button. 3. Device will switch to test mode. 4. Each joystick click will change displayed led.

5. If led will not change or will do it intermittently it means that the answer button may

be faulty. 6. By clicking you can check all led inside the examination bowl and localize the faulty

one.


11.3. Stimuli brightness calibration Necessarily tools: Philips head screwdriver, hexagonal tool size 2, torques tool size T20, Perimeter Tool diagnostic software, light meter L100, adapter AD-02P In case the led that has been replaced is located in the central position of the bowl and access is possible, there is no need of opening the device front cover. If replaced led is at the peripheral region of the bowl it is recommended to remove front cover. 1. Follow chapter no. 9.4 to remove back cover. Place the cover on a soft safe surface. 2. Make sure that the device is turned on and properly installed. 3. Start Perimeter Tool diagnostic software, change language to English by pressing “Pomoc”.

4. Connect the device by selecting Perimeter >Connect> Automated perimeter> select a COM port to which device is connected to. Device serial number will appear.


5. Press view button and change it to Advanced.


6.

Press Luxmeter button to connect the light meter.

7. Click on the bowl map to indicate the replaced led and measure its brightness. Hold the sensor above it and select Autocalibration – value will be displayed then select Save. After calibration is finished press save data to EEPROM memory.


8. For PTS920BY in order to calibrate a blue led change color to blue in Color section.

Then follow above steps in the same way

9. Proper stimuli values measure by light meter L 100 Stimuli color

Measured value

Tolerance

Green

17,9 lx

5%

Blue

8,9lx

5%

10. After calibration close the device and test its functioning


11.4. Background illumination check and calibration Necessarily tools: Perimeter Tool diagnostic software, luxometer L100, adapter CO-02P 1. Make sure that the device is turned on and properly installed. 2. Start Perimeter Tool diagnostic software, change language to English by pressing “Pomoc”.

3. Connect the device by selecting Perimeter >Connect> Automated perimeter> select a COM port to which device is connected. Device serial number will appear.


4. Go to Control tab and turn on the background illumination(both colors should be verified in PTS 920 BY)

5. Place the adapter on the front cover so that it is not letting any light inside the bowl.


6. Use light meter(L100) sensor to measure the background brightness value: Background color

Measured value

Preferable

White

1,38-1,96 lx

1,63 lx

Yellow

43,52-61,44lx

51,2 lx

7. In case values are not proper, go to calibration tab and change parameters in Backlight calibration section. After setting the right value select Save and Save data to EEPROM memory. Close the diagnostic toll and measure the background again to confirm proper value.


12. Spare parts list. no.

Part name

Part number

1

Front cover

P3-901

2

Back cover

P3-902

3

Back cover

P3-903

Projection bowl PTS 920

P3-904

PTS920 BY

P3-904BY

5

Preview camera USB cable

P3-905

6

Preview camera

P3-906

7

led wire external

P3-907

4


Photo

no.

Part name

Part number

Background 8

modules(Left, Right, Centerlight sensor)

P3-908 L P3-908 C P3-908 R

Stimulus diode: 9

green, blue, yellow-

P3-909

background

10

11

Fan (2 pices/device)

CPU/power supply board

P3-910

P3-911

12

Transformer

P3-912

13

Chinrest motor+ filter board

P3-913

14

Chinrest module detectors set


P3-914

Photo

no.

15

16

17

18

19

Part name

Part number

Chinrest motor transmition Bel t

Chinrest module repair kit

Complete trial lens holder

Trial lens holder

Plastic ring for correction lenses

P3-915

P3-916

P3-917

P3-918

P3-919

20

Forehead pad

P3-920

21

Chinrest (single)

P3-921


Photo

no.

22

23

Part name

Part number

Chinrest (double)

Patient`s reaction stick

P3-922

P3-923

Patient`s 24

reaction stick

P3-924

holder

25

Eye cover

P3-925

26

USB communication

P3-926

cable

27

28

Power supply cable

Correction le ns set with box


P3-927

P3-928

Photo

no.

Part name

Part number

29

Correction lens box

P3-928

30

Power supply switch/ socket

P3-930

31

Fuses set (4)

P3-931

32

Dust cover

P3-932

33

USB flash disc with software

P3-933

34

Transportation box with foams

P3-934


Photo

PTS 920 Service Manual 1.0

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