sm_30_4044_a1_en service instructions visucam lite ab okt. 2.pdf

7/25/2019 SM_30_4044_A1_en Service Instructions VISUCAM lite ab Okt. 2.pdf

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VISUCAMlite

(effective from Oct. 2003)Fundus Camera

Service Instructions

SM-30-4044-A1-en

Issue: 22.09.2003

Replaces issue: - page 1 of 41

Service

Service

Service

Service

MS - TS 1


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Service Instructions VISUCAM

lite Issue: 22.09.2003

SM-30-4044-A1-en Replaces issue: Page 2 of 41

ContentsSeite

Contents............................................................................................................................... 2

Update information.............................................................................................................. 5

General information............................................................................................................. 6

Cleaning Care and Servicing of the unit......................................................................... 6

Tools and test devices ........................................................................................................ 6

VISUCAM lite- Unit................................................................................................................ 7

System overview .............................................................................................................. 7

Design............................................................................................................................... 7

VISUCAM liteconnector panel ......................................................................................... 7

Overview of functions ..................................................................................................... 8

Help for troubleshooting ................................................................................................. 8

Help for troubleshooting ................................................................................................. 9

Questions about mechanical problems........................................................................... 9

Questions about electrical or system problems............................................................... 9

VISUCAM lite - Component Service............................................................................... 10

Replacing the blinking diode of the fixation light............................................................ 10

Opening and closing the camera head ......................................................................... 10

Replacing the halogen bulb .......................................................................................... 10

Separating the camera head from the instrument base................................................. 11

Replacing the VISUCAM litecontrol cable...................................................................... 11

Replacing the complete lamp housing .......................................................................... 12

Replacing Lamp Control PCB VISUCAM lite .................................................................. 12Overview connectors lamp control PCB .................................................................... 12

Replacing the fan cooling the lamp housing.................................................................. 13

Replacing the temperature sensor................................................................................ 13

Replacing Shutter......................................................................................................... 13

Replacing the light guide .............................................................................................. 14

Exciter filter assembly................................................................................................... 14Installing / removing the Exciter filter assembly......................................................... 14Replacing the stepper motor of the exciter filter assembly......................................... 15

Replacing the opto-coupler of the exciter filter assembly........................................... 15

Replacing the filters of the exciter filter assembly...................................................... 15

Checking the exciter filter drive ................................................................................. 15

Barrier filter assembly................................................................................................... 16Installing / removing the barrier filter assembly.......................................................... 16Replacing the stepper motor of the barrier filter assembly......................................... 16Replacing the opto-coupler of the barrier filter assembly........................................... 16Replacing the filters of the barrier filter assembly ...................................................... 16Checking the barrier filter drive.................................................................................. 17

Finder camera .............................................................................................................. 17Replacing the finder camera ..................................................................................... 17Positioning the finder camera.................................................................................... 17Adjusting the focus of the finder camera ................................................................... 17

Checking and adjusting the image position of the finder camera............................... 18

Camera module............................................................................................................ 19


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Replacing the cameras ............................................................................................. 19Connectors of the Camera module............................................................................ 19Stepper motor for camera shift.................................................................................. 19Adjusting the horizontal image positions of the cameras. .......................................... 20Replacing the stepper motor of the camera module .................................................. 20Replacing the opto-coupler of the camera module .................................................... 20

Replacing the VISUCAM litecontrol PCB....................................................................... 21

Opening and closing the control base........................................................................... 21

Opening and closing the control base........................................................................... 22

Replacing the headrest................................................................................................. 23

Components of the control base................................................................................... 24

Exchanging power supply............................................................................................. 24

Exchanging Motherboard MEDP3................................................................................. 25Motherboard connectors ........................................................................................... 25

Exchange hard disk...................................................................................................... 25

Exchange GIF instrument interface............................................................................... 25

Connections of the GIF instrument interface ............................................................. 25

System settings and work with internal programs ...................................................... 26

Activating the system settings....................................................................................... 26Driver installation from CD ........................................................................................ 26Mouse....................................................................................................................... 26Keyboard .................................................................................................................. 27Printer ....................................................................................................................... 27Network..................................................................................................................... 28Date / Time ............................................................................................................... 30Regional settings....................................................................................................... 30

Opening the Windows Explorer program ...................................................................... 31

Closing an active window ............................................................................................. 31

Opening watch files (Logserver) ................................................................................... 31

Enter BIOS................................................................................................................... 31Password for BIOS.................................................................................................... 31

Installing, uninstalling CD-writer.................................................................................... 31

About window ................................................................................................................ 32

Opening the Test Tools program.................................................................................. 32

Overview Test Tools program....................................................................................... 32

Test and adjustment of mechanical and electrical functions ..................................... 33

Testing focus drive ....................................................................................................... 33

Test Focus drive for +25dpt....................................................................................... 33Test Focus drive for 25dpt....................................................................................... 33

Testing grabber function and quality of the sensors...................................................... 33

Data input fields............................................................................................................ 34Driver information field .............................................................................................. 34Enter defaults............................................................................................................ 34

Save data.................................................................................................................. 34Temperature levels field............................................................................................ 34Sensor field............................................................................................................... 34

Input and output signals of the electronic system.......................................................... 35

Checking the potentiometer input.............................................................................. 35

Checking the temperature sensor ............................................................................. 35Checking the voltages with A/D converter. ................................................................ 35


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Update information

Issue Comments

22.09.2003 Issue 1


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General informationUse the User Manual, SAP No.: 1165-216, as additional literature on the VISUCAM litefunduscamera. You must be familiar with the contents of the user manual to be able to work with theservice instructions.

The service manual mainly covers the defined spare parts and the description of how the most

important components are replaced.The replacement modules have been chosen in such a way that replacing them should bepossible without a special training. If in-depth work on the unit is necessary, you should attendthe appropriate service training.

The VISUCAM litefundus camera does not have to be installed by service staff. For this reason,no Service Report is necessary.

No fastening components are allocated to and supplied with the spare parts. For this reason,the fastening components provided in the unit must be re-used when modules are replaced.

Caution: After the unit has been opened, hazardous voltages are accessible. Take thenecessary precautions against the coming into contact with hazardous voltages and

comply with the applicable work instructions.

Cleaning Care and Servicing of the unit

Also see the Care and Maintenance chapter in the user manual.The unit requires almost no servicing. We recommend having the unit serviced once a year onthe basis of an appropriate support contract.The points listed in the "System check" chapter represent a work plan which must be completedwhen a unit is serviced.

The optical surfaces can be cleaned using an ether-methylated spirits mixture (9:1), a special

optics cleaning mixture (SM-30-8005-32) or methanol.

Tools and test devicesMaterial number Benennung deutsch English description

1239-573 Servicekit VISUCAMlite Service kit VISUCAMlite

1. 1212-348 Testtool Fokusebene Test tool for focus plane

2. 1194-369 Schlssel fr Sucherkamera Key for Finder Camera adjust

3. 0118-751 Sechskantschlssel Zoll 3/32(Netzteildemontage)

Hex key, inch 3/32(removal of power supply unit)

4. 1242-737 Recovery CD VISUCAMliteR1.02 Recovery CD VISUCAMliteR1.02

5. 1240-531 Justierfarbtafel Color test picture

6. 0449-685 Graufilter 2,5% Gray filter 2.5%

7. 1046-391 Halter fr Demoauge Holder for Demo Eye

1-6 ist Teil des Servicekits 1-6 is part of the service kit

1177-617 Demoauge mit Halter Demo eye with clamp


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VISUCAM lite- UnitNotes on servicing:

Always disconnect the power plug before opening the unit.After servicing, check all functions and, if necessary, the electrical safety of the unit.

System overview

1 Cap of fixation light2 Fixation light3 Headrest with chinrest4 Monitor5 USB Flash Drive (Option)6 Keyboard, Mouse (PS2)7 Instrument base with joystick and

potentiometer for brightness adjustment8 Camera head9 Control base

Design

The base, mechanical stage, instrument head and headrest form one functional unit.

The connector panel on the base provides the following connections:1 The VISUCAM liteis switched on/off using power switch (1).2 The power cord is connected to power inlet (2).3 The display is connected to VGA connector (3). (The display has its own power supply

and is not switched on/off using the power switch.)4 2 USB Ports (4) are available for USB devices (Printer).5 The camera head is connected to DEVICE connector (5).6 The Mouse is connected to PS2 Mouse connector (6.7 The Keyboard is connected to PS2 Keyboard connector (7).8 Label for connector layout

9 A printer can be connected to LPT1 parallel port (9).10 COM1 serial port (10) is provided for the connection of serial units.11 NET network connector (11) for integration of the VISUCAM litein a network.12 Warning label

VISUCAM liteconnector panel

9


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Overview of functions

Illumination white

Illumination IR

X11

X50

X19

Control of

VISUCAMlite

M

Opto-coupler

Stepper

Finder cameraIR

CameraControl

PCB

Barrier filter drive

X7

X4

M

Opto-coupler

Stepper

Exciter filter drive

X8

X5

M

Opto-coupler

StepperX9

X6

Camera change

1/2 B/W Cam.

1/2Color Cam.

Camera module

X18

X17

X14X12X2X1

X1

X101 X102 X112 X114 X131

X21

X6

X7

Hard disk

LPT1 COM1 NET USB2USB1

X22

GIFInstumentInterface Computer PCB

CD-ROM andCD -writer

DISPLAYKeyboard

Mause

Printer

Fixation

Fan Position sensorleft - right

X4

X5

Connectorpanel

X3

X20

Instrument base

Brightness

Release

Camera head

Headrest

VISUCAMlite

Computer Base

Lamp control

X42

Halogen-bulb Fan

Temperatur-sensor

X45 X46

X43

X41

+

MUX+12V

Cameras

+12V

+5V

+5V1

+12V

+12V

Signals

Signals

+12V

SignalY/C

Line Line

DEVICE

X141

Programming

+12V La

X16

+12V Col.

+12V B/W

St11

St66

X12

+5V, +12V

+5V

VGA

VGA

Primary IDE

+5V

Line

Power

supply

Power

inlet

100...240VAC

Insul.

Transf.

115/230VAC

115VA

Instr.Table

115/230V,AC

USB Flash DriveOptional

PS2 PS2

St8

Shutter

X47

X132

SignalB/W

St4

Control B/W St9

X1

X19X17

X6 X5 X3 X4X2

S1


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Help for troubleshooting

Questions about mechanical problems

Can the camera head be swiveled all the way to the right and left?

Can the VISUCAM litefundus camera be easily moved and locked on the base within the

entire working range?

Is the ophthalmoscope lens clean?

Questions about electrical or system problems

Have all connections been made and all plugs been properly inserted?

Does the computer start up after the power switch has been switched on?

Can the operating software be started?

Can the brightness of the halogen lamp be adjusted?

Does the drive for the exciter filter initialize?

Does the drive for the barrier filter initialize?

Does the illumination of the finder camera function properly for white light and IR light?

Does the finder camera function properly and is the image provided by it displayed on the

monitor?

Can the B/W camera sensor (1/2) be selected for observation? Can the color camera sensor (1/2) be selected for observation?

Does the focusing system function properly?

Does the B/W camera sensor function properly and can images be captured?

Does the color camera sensor function properly and can images be captured for 45/35?

Can you print with the printer (option) connected?

Have the screen settings (contrast, brightness) been adjusted as required?

Have the screen values (1024x768, 24bit, true color) been adjusted?

Does external archiving function (optional network or USB Flash Drive) properly?


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SM-30-4044-A1-en Replaces issue: Page10 of 41

VISUCAM lite - Component Service

Note:Easy-to-exchange components are not described in detail.

Replacing the blinking diode of the fixationlight

Screw out the blinking diode (1) from itssocket(2).

Screw the new blinking diode into the socket.

Check whether it is properly functioning.

Opening and closing the camera head

Disconnect the VISUCM C from linepower.

Remove the lamp housing cover.(Snap lock)

Remove Focus Drive left side and rightside.

Loosen 4 x hex socket head screws(2.5 mm) in the left-hand cover.

Remove the left-hand cover.

Loosen 4 x hex socket head screws(2.5 mm) in the right-hand cover.

Remove the right-hand cover.Note: When removing and attaching the

covers, make sure that the findercamera cover plate is in the groovesand not damaged and take care not

to squeeze any cables. Assemble in reverse order.

Replacing the halogen bulb

Caution: The halogen bulb may be hot. Risk of burns!Allow the halogen bulb to cool down.

Open the camera head(see: Opening and closing the camera head).

Remove the halogen bulb including socketfrom the lamp mount.Take care not to bend the mount!

Remove the defective halogen bulb from thesocket.

Insert the new halogen bulb into the socket.

Insert the halogen bulb including socket intothe mount.

Close the camera head(see: Opening and closing the camera head).

Switch on VISUCAM liteand check its functions.

Note: The lamp need not be readjustedafter bulb replacement.

1 Blink diode2 Socket of Blink diode


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Separating the camera head from the instrumentbase

Open the camera head(see: Opening and closing the camera head).

Disconnect the cable for the camera head X14,

X20from the connector panel. Disconnect the 2 cables leading to the

instrument base from the VISUCAM litecontrolPCB. Remove the cable ties.

Push the cables through the connecting holes.

Remove the securing ring.

Close the camera head (see: Opening and closing the camera head).

Pull the camera head from the pin and lay it aside.

Mount the new camera head accordingly.


Replacing the VISUCAM litecontrol cable

Open the camera head (see: Opening and

closing the camera head). Disconnect the control cable from the

connector panel.

Disconnect the control cable from theVISUCAM litecontrol PCB, the camerascontrol PCB and the lamp control PCB.

Remove cable ties and cable clamps fromthe cable.

Route the new VISUCAM litecontrol cableas per wiring diagram and connect it.

Close the camera head (see: Opening andclosing the camera head).

Switch on VISUCAM liteand check itsfunctions.

Securing ring

Control cable

Control PCBVISUCAM

lite

Cameras control PCB


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Replacing the complete lamp housing

Open the camera head (see: Openingand closing the camera head).

Remove the light guide from the top.

Disconnect 2 cables to VISUCAM lite

control PCB. Remove various cable mounts on the lamp

housing.

Remove fastening screws.

Remove the lamp housing including PCB.

Install the new lamp housing. Observe theguide slots inside both covers.

Connect the cables.

Secure the light guide in position at the top.

Re-attach the mounts for the other cables.

Close the camera head (see: Opening

and closing the camera head). Switch on VISUCAM liteand check its functions.

Replacing Lamp Control PCB VISUCAM lite

Remove the complete lamp housing (see: Replacing thecomplete lamp housing).

Remove the lamp control PCB.

Install the new lamp control PCB.

Install the complete lamp housing (see:Replacing the complete lamp housing).

Overview connectors lamp control PCB

Connectors at solder side (access from lamphousing): X42 Halogen lamp

X45 FanX46 Temperature sensorX47 Shutter

Connectors at component side:X41 +12V Lamp supplyX43 Signals

X42Halogen lampX45fan

X46

Temperature sensor

X43

Cable tocontrol PCB VISUCAM

lite

X11

X41

+12V lamp supplyX141 from DEVICE X1

control cable

X47Shutter

Guide slotinside cover

Light guide

Securing screwLight guide, top

X42

Halogen lamp

X45fan

X46

Temperature sensor

Temperatur sensor

Shutter

X47


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Replacing the fan cooling the lamp housing

Note:Fan blows outward. Observe markings on the fan!

Open the camera head (see: Opening and closingthe camera head).

Disconnect the fan cable from X45 on the lampcontrol PCB.

Screw off the defective fan.

Mount the new fan and connect it to X45on the lamp control PCB.



Replacing the temperature sensor

Disconnect VISUCAM litefrom line power.

Open the camera head (open left half only)(see: Opening and closing the camera head).

Disconnect the cable of the temperature sensorfrom X46 on the lamp control PCB.

Screw off the defective temperature sensor.

Mount the new temperature sensor and connectit to X46 on the lamp control PCB.



Replacing Shutter

VISUCAM litevom Netz trennen.

Disconnect VISUCAM litefrom line power.

Open the camera head (open left half only)(see: Opening and closing the camera head).

Disconnect the cable of shutter from X47 on the lampcontrol PCB.

Screw off the defective shutter. Shutter wing is still onplace.

Mount the new shutter and connect it to X47 on the lampcontrol PCB.



ShutterX47


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Replacing the light guide

Open the camera head (see: Opening andclosing the camera head).

Loosen the upper mount of the light guideand push the light guide through the hole.

Press out the light guide from the clip. Loosen the lower mount of the light guide

and remove the light guide.

Insert the new light guide accordingly,push it all the way into the mounts andlock it in position.

Close the camera head (see: Openingand closing the camera head).

Switch on VISUCAM liteand checkits functions.

Exciter filter assembly

Installing / removing the Exciter filter assembly


Disconnect the stepper motor cable at X8

and the opto-coupler cable at X5from thecontrol PCB and remove the cable mounts.

Screw out 2 fastening screws and removethe complete module.

Stepper motor, opto coupler or filters can bereplaced.

Re-insert the module and secure it inposition.

Re-route and connect the cables for theopto-coupler and the stepper motor.



Clamp

Hole

Securing screw

Clamp screw


15/41




Replacing the stepper motor of the exciter filter assembly

Disconnect the stepper motor cableX8from the control PCB and removethe cable mounts.

Screw out 2 fastening screws and

remove the stepper motor. Replace the stepper motor by a new

component.

Re-route and connect the cable forthe stepper motor to X8control PCB.



Replacing the opto-coupler of the exciterfilter assembly

Disconnect the opto-coupler cable X5from the control PCB and remove thecable mounts.

Screw out 2 fastening screws andremove the opto-coupler.

Replace the opto-coupler by a new component.

Re-route and connect the cable for the opto-coupler to X5control PCB.



Replacing the filters of the exciter filter assembly

Screw out 2 fastening screws and remove the complete exciter filter drive. Remove the filter cover plate.

Replace the filter you want.

Tighten the filter cover plate.

Replace the exciter filter drive.


Checking the exciter filter drive

The function of the stepper motor and opto-coupler can be checked using the service software.

Start the service software (see "Opening theTest Tools program").

Select the "step motors" tab.

Select the "exciter" tab.

Position selection 0-3 permits you to selectthe different filters

If you press the "set home position" button,the 0 position is set.

Manually turn the filter wheel until the slit islocated in the opto-coupler.

The mark indicates the transmitted light

function of the opto-coupler.

Fluo filter

Filter cover plate

Stepper

Opto-coupler

Blue/IR-Cut-filter

IR filter

Green filter


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Barrier filter assembly

Installing / removing the barrier filter assembly


Loosen the lamp housing and move it

slightly to the side.(See also:

Replacing the complete lamp housing).

Disconnect the stepper motor cable fromX7 and the opto-coupler cable from X4 onthe VISUCAM litecontrol PCB and removethe cable mounts.

Undo 2 fastening screws and remove thecomplete module.

Insert and secure the new module.

Re-route and connect the cables for the

opto-coupler and stepper motor. Mount the lamp housing.



Replacing the stepper motor of the barrier filter assembly

Disconnect the stepper motor cable X7from the control PCB and remove the cable mounts.

Screw out 2 fastening screws and remove the stepper motor.

Replace the stepper motor by a new component.

Re-route and connect the cable for the stepper motor to

X7control PCB. Close the camera head (see: Opening and closing the

camera head).


Replacing the opto-coupler of the barrier filter assembly

Disconnect the opto-coupler cable X4from the controlPCB and remove the cable mounts.

Screw out 2 fastening screws and remove the opto-coupler.


Re-route and connect the cable for the opto-coupler to

X4control PCB. Close the camera head (see: Opening and closing the

camera head).


Replacing the filters of the barrier filter assembly

Unscrew and remove the stepper motor of the barrier filter (see also Replacing the steppermotor of the barrier filter assembly).

Lift the cover plate from the safety clamp and turn it so that it is clear of the clamp.

Turn the mounting hole of the cover plate to the filter to be replaced.

Replace the filter.

Turn the cover plate back to its initial position making sure that the safety clamp engages inthe hole.

Install the stepper motor of the barrier filter.


Fluo filter

Safety clamp

Stepper motor

Opto-coupler

Mounting hole

IR-Cutfilter

Lense

Red filter


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Checking the barrier filter drive

The function of the stepper motor and opto-coupler can be checked using the service software.

Start the service software (see "Opening theTest Tools program").

Select the "step motors" tab. Select the "barrier" tab.

Position selection 0-3 permits you to selectthe different filters

If you press the "set home position" button,the 0 position is set.

Manually turn the filter wheel until the slit islocated in the opto-coupler.

The mark indicates the transmitted lightfunction of the opto-coupler.

Finder camera

Replacing the finder camera


Unplug the connections of the findercamera from the control PCB.

Remove the cable mounts.

Remove the angled bracket including thefinder camera.

Mount the new finder camera, connect the

cables and secure them in position.

Positioning the finder camera

Mount one of the two covers.

Move the bracket including the findercamera in such a way that it rests slightlyagainst the inner side of the housing.

Tighten fastening screws.

Adjusting the focus of the finder camera

Switch on VISUCAM liteand start the program (also see the user manual).

Create a test patient file and start the image capture mode.

The finder camera's field of view is visible on the bottom left of thescreen.

Attach a piece of paper displaying centering circles to the headrest.

Adjust brightness as required for observation. Center and focus theilluminated ring on the centering circles. You can see then structuresof fiber optic.

The rings must be displayed sharply defined. If the rings areblurred, turn the focusing ring on the finder camera until you haveobtained a sharply defined image.

This completes the mechanical alignment.

Close the camera head (see: Opening

and closing the camera head).

Focus ring

White LED

IR LED


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Checking and adjusting the image position of the finder camera

Camera Field is max. 768 x 576 pics.Maximum possible settings are:a+c 768b+d 576

b > image b < image a > image a < image d > image d < imagec > image c < image

The rings should be centered on the field of view. The shadow (visible at the top of the picture)should not be larger.If you detect any deviations, the position of the rings can be adjusted in the x and y directions.The height and width of the image can be adjusted as required.

Open the Windows Explorer (see: Opening the Windows Explorer).

Click the VISUCAM litesoftware window to bring it to the front of the screen.

Using the ALT + F4key combination, close the VISUCAM liteprogram.

Now the Explorer is visible.

Note: The file VECtrl.ini has to be copied and saved before due any changes in it.

Open the VISUCAMdirectory.

Open the VECtrl.inifile.

By changing the values ofthe marked positions(arrows), you can changeboth the position and thesize of an image.

Tip:changes in the imagedo not become visible untilyou change the values by 10to 20.

Save VECtrl.ini.

Start VISUCAM liteprogram by clicking themain.exefile inside theVISUCAMdirectory.

Check the position of the finder camera picture.

If it is necessary, repeat the procedure again.

a (x)

b (y)

d

c

Finder camera

Illuminated ring


19/41




St11St7

St5St66

St9 St8

St4

Extended field of view

Camera module

Replacing the cameras

Open the camera head (see: Openingand closing the camera head)

Remove the cable connections.

Screw out 3 fastening screws andremove the camera module.

Insert the new module and align it withthe right-hand edge of the housing.

Make electrical connections.

Align the module using the right-handhousing edge in such a way that thevertical position of the image on themonitor is correct.

Connectors of the Camera moduleControl PCB VISUCAM lite, +12V, B/W sensor, X18Control PCB VISUCAM lite, B/W control, X16Control cable VISUCAM lite, Signals Y/C, X131Control cable VISUCAM lite, B/W signal, X132Control PCB VISUCAM lite, +12V, Color sensor, X17

Stepper motor for camera shiftThe distance between the opto-coupler and B/W camera ranges between >5 and 5 steps


20/41




Adjusting the horizontal image positions of the cameras.Note: The vertical image positions of the cameras are adjusted during the installation of the

camera modules by upward and downward shifting along the housing edge.First, the image position of B/W camera sensor is checked and adjusted.

Start the service software (see "Opening the Test Tools program").

Select the step motorstab. Select the shift cameratab.

Click the set home positionbutton

The basic position is set (position of B/W camera sensor).

Click on the 0button (pos. and power)

B/W camera sensor is switched on.

Check the image position on the monitor. The 4 black corners should have the same size.

To correct the image position, press the +/- stepsbuttons until the corners are the samesize (+1 step, image moves to; -1 step, image moves to ).

Press the use valuesbutton.

Save the new position in the EPROM of the VISUCAM litecontrol system.

Click on the 1button (pos. and power) Color camera sensor is switched on. (If the color camera sensor is not switched on, +1step

button and1step button should be clicked to switch the color camera sensor to on).

Check the image position on the monitor. The 4 black corners should have the same size.

To correct the image position, press the +/- stepsbuttons until the corners are the samesize (+1 step, image moves to; -1 step, image moves to ).

Press the use valuesbutton.

Save the new position in the EPROM of the VISUCAMlitecontrol system.

Check the positions of the color cameras in the image capturing mode of the normalprogram.

Replacing the stepper motor of the camera module

Open the camera head (see: Opening and closing the camera head).

Disconnect the stepper motor cable X9from the control PCB and remove the cable mounts.

Screw out 2 fastening screws and remove the stepper motor.

Manually move the carriage of the cameras to the basic position (flag in the opto-coupler).

Replace the stepper motor by a new component. Slide the pilot pin of the motor spindle through the mounting hole. Firmly secure the stepper motor with 2 fastening screws. Secure the motor spindle with nuts.

Re-route and connect the cables for the stepper motor at X9control PCB.


Switch on VISUCAM liteand check the function of the stepper motor.

Check and, if necessary, adjust the horizontal image positions of both camera sensors (seeAdjusting the horizontal image positions of the cameras).

Replacing the opto-coupler of the camera module

Disconnect the opto-coupler cable X6from the control PCB and remove the cable mounts.

Screw out 2 fastening screws and remove the opto-coupler.


Re-route and connect the cable for the opto-coupler to X6control PCB.



Check and, if necessary, adjust the horizontal image positions of color cameras1 and 2 (see

Adjusting the horizontal image positions of the color cameras).


21/41




Replacing the VISUCAM litecontrol PCB

Note: When exchanging the control PCB, re-enter and save the serial number of theinstrument. Also enter and save the instrument type (see Data input fields).


Unplug all cable connections.

Screw out 4 fastening screws and removethe PCB.

Insert the new VISUCAM litecontrol PCBand secure it in position.

Re-connect the cables.



DEVICE(X1 interface)control cable

+12V,Color camera sensor

camera pcb St 11

IlluminationIR and white

Control Camera

+12V,B/W camera sensorcamera pcb St 66

X1 (X101)

X14 (X114)

X12(X112)

X7

X17

X16X10

X50

X3X11

X8

X9

X4X5 X6

Instrument-base pot

Lamp-control X43

Barrier filtersensor

Barrier filterstepper motor

Exciter filterstepper motor

Exciter filtersensor

Camerastepper motor

Camerasensor

X2 (X102)Instrument base release

Programming

X18

X20

X19

X131 signals Y/CColor camera sensor

camera pcb St 8

X21

X132 signalB/W camera sensor

camera pcb St 4

ControlB/W camera sensor

camera pcb St 9


22/41




Opening and closing the control base

Removing the camera head includinginstrument base.- Disconnect the cable for the camera

head.

- Loosen the screws in the toothedrack.(2.5mm hex socket head)

- Push out the camera head includinginstrument base to one side.

- Place the camera head includinginstrument base on the table.

Opening the control base- Put the base including headrest to one

side.- Remove 8 x 3 mm hex socket head

screws.

- Remove 4 x Phillips screws fromthe connector panel.

- Remove the base cover and lay itaside.

Caution:Take care not to tear off the fixation lamp cable. (see also replacing the headrest!).

Close the base in reverse order.


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Replacing the headrest

Remove the fixation lamp including the blinkingdiode.

Loosen the locking screws for the headrest.

Open the base (see: Opening and closing the

control base). Disconnect the cable for the fixation lamp from X7

on the instrument interface.

Pull the headrest from the clamping mounts.

Push the new headrest into the clamping mounts.

Secure the headrest in position by tightening thelocking screws.

Plug the cable for the fixation lamp into X7 on theinterface.

Close the base (see: Opening and closing thecontrol base).

Clamping mount

X7fixation lamp

Cable offixation lamp


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Components of the control base

Notes on the removal and the installation of the base components:All interchangeable components can be removed and installed without difficulty.The continuous external saving of images and patient data has to be done by thecustomer itself. Both a hard disk with an operating system and a VISUCAM liteprogramand a blank hard disk are available.

Exchanging power supply

For exchanging the power supply there is an Allen key 3/32 inch included in the Service kit.

red +5Vblack groundyellow +12V

CD-ROM / drive, writer

Inductive approximationswitch

Med PIII Motherboard

12VDC fan

Connectionfield

Hard disk

GIF instrument interface

+5V, +12Vpower supply

Line module

PS2 InterfaceMouse, Keyboardr

Power input


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Exchanging Motherboard MEDP3

Note: To be able to exchange motherboard MEDP3, you first have to remove instrumentinterface GIF.

Motherboard connectors

Note:Do not fix the motherboardhere with a screw!

Exchange hard disk

Note: If possible, before exchanging the hard disk a backup of the patient data, network andprinter settings should be done.

Exchange the hard disk (see: components of the control base).

Restore the operating system and the data base using the recovery CD-ROM.(SM-30-4045-A2).

Reinstall printer driver and run it (optional).

Check the position of the finder camera window (see: checking and adjusting the imageposition of the finder camera).

Restore saved patient data.

Reinstall the network settings (optional).

Exchange GIF instrument interface

For exchange see: components of the control base.

Connections of the GIF instrument interface

X10 Motherboard

X9 Motherboard

X21

X22

X3

X5

X6

X7

Sensorleft/right movement Power

supply

Fixation lamp, head rest

Fan base

Camera headX1

X2

X4

VGA DisplayCon. panel

Hard diskCD-ROM / burner

Powersupply

User interfaceX21

User interfaceX22

Battery

X19

X17

X9X10

X6

PS2 Mouse keyboard Con. panelX5


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System settings and work with internal programs

Note: The system settings are only accessible to authorized service staff and may only bechanged by this staff. The access to the system settings is protected by a password.All system settings have been adjusted ex factory as required in the country ofdestination.

Activating the system settings

VISUCAMliteis on and in the patient or image

capture mode.

Switch on VISUCAM lite.

Click File in the program bar.

The overview window opens.

Select and click System.

The password window opens. Enter password irisand click OK.Note: This Password is only available to service

staff and is provided during service training.

The system selection window opens.

Select and click on the function required

Driver installation from CDThis selection menu permits you to install a driver

from a CD. For installation, select the programprovided for this purpose, e.g. setup.exe.

Mouse3 menus are available for defining the settings for the mouse.


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Keyboard2 menus are available for defining the settings for the keyboard.In the Speed menu, you can change the mode of operation.In the Language menu, you can adapt the regional settings to the keyboard used.

PrinterVia this selection, you canaccess the printer menu. Here,a printer can be selected as aDefault Printer. You can alsoinstall new printers here.

Selecting printer features

Click Fileand thenPropertiesto open thesettings window for theprinter selected.

You can find the data on thedriver and the portassignment (e.g. USB) inthe Details register.

The changes you will make

in the properties arearchived.

Before removing printerdrivers all applications haveto be closed.

Connect and start up USBprinters during operation. This permits the printers to be recognized by the USB interface,and the printer drivers can then be installed.


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NetworkIn the Network menu, you can adjust the settings for the network connection.The Configuration window shows the protocols used.In the Identification window, you can enter the computer name assigned by the networkadministrator (e. g. ZO01Q73J) and the workgroup or domain used (e. g. DEOKO). You canalso enter a name for the unit connected (e.g. VISUCAM lite) in the Computer Description box.

If a special IP address must be used, open the TCP/IP protocol and select Properties. You canspecify an IP address in he IP Addressbox.


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Logon to a domain it can be setup in network configuration window.

Click Client for MicrosoftNetworks.

Click Properties.

Properties General

opens. Mark Logon to Windows NT

domain.

Type in domain name (inthis case zeiss).

Select Network logonoptions.

Finish with OK.

Restart VISUCAM lite

If you have selected the logonto a domain, after restart thesystem asks you for your logindata of the domain server(zeiss). This data you get fromthe domain administrator.

Note:If the program asks for newdrivers you can find drivers inwindows directoryc:\WIN98SE\WinInst.

Everery times reboot isnecessary


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Date / Time

In the Date/Time Properties menu you canchange the time currently set.

The time zone can be adapted to the currentlocation.

Regional settings

In the Regional Settingsmenu, you can set thelanguage zones.

In the Datemenu you can set the date.


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Opening the Windows Explorer program

VISUCAMliteis on and in the patient or image

capture mode.

Click the ? in the program bar.

The window with Help Topics and Info opens .

Click Info

The Aboutwindows opens.This window contains important data onVISUCAM liteincluding the serial number.

Press the ??? +? key combination.Note: This key combination is only available to

service staff and is provided during servicetraining.

The Windows Explorer opens,providing access to the system settings.

Closing an active window

Use the ALT + F4 key combination to close an active window.

Opening watch files (Logserver)

Use the ALT + wkey combination to open newest watch file (watchx.lgg) of the logserver.Two more watch files are in the folder C:\VISUCAM\Watch(1-3).lgg. To open watchx.lgg is notpossible. X can be no. 1-3. The oldest watchx.lgg will be deleted after start, opened new bylogserver and get the newest data if VISUCAM lite program is active.

Enter BIOSTo enter BIOS, press F2several times during booting the instrument.

Password for BIOSThe Password is ????? (only available to service staff!)

Installing, uninstalling CD-writer

Install / uninstall new drivers for CD-writer (Plexwriter)Uninstall: 1. IN CD program Install: 1. Driver for the CD-writer

2. Driver for the CD-writer 2. IN CD program

Note: If it is not possible to read any data from a CD-RW, you have to install the

UDF- Reader program on your computer to read files from CD-RW.

Drivers are local at c:\ installs


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About window

The About window contains the actual informationabout the installed software version, Drivers and theinserted serial number.

Opening the Test Tools program

VISUCAMliteis running in the patient or image

capture mode.

Click the ? in the program bar.

The window with Help Topicsand Infoopens.

Click Info

The Aboutwindow opens.

Press the ??? + ? key combination.Note: This key combination is only available to

service staff and is provided during servicetraining.

The Test Tools selector window opens,providing access to different modules of theTest Tool.

Note: Service module is designed for service use.Other modules are not necessary to use.

Click Service

The Test Tool windows opens.

Overview Test Tools program

There are 3 windows to check VISUCAM litefunctions or setup data:

in / outwindowchecks the Input Output

functions

stepper motorswindowstepper motor of exciter filter

stepper motor of barrier filterstepper motor of camera selector

Data windowshows setup or data of

factory settings


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Test and adjustment of mechanical and electrical functions

Testing focus drive

Test Focus drive for +25dpt

Focus the illumination ring to the first area by moving theVISUCAM litecamera by hand. You should

see the structure off the light guide insidethe illuminated ring.

Focus with focus drive to the area with thevertical lines and expect a sharp picture atthe screen.

Note: The distance between the front area and

the back area is 40mm and it should bepossible to focus in this area.

Test Focus drive for 25dpt

Cover front lens with dust cap.

Adjust the brightness of illumination in such a wayyou can see a picture at the screen.

Focus to the inside of the dust cap.

It should be possible to get a sharp picture.

Testing grabber function and quality of the sensors

Use the VISUCAM litein a dimmed area and switch off the room light.

Put the gray filter in between the light guide and the halogen lamp.

Use capture mode.

Focus to the gray field of the color table.

Setup Angle 45Fluo mode, barrier and exciter filterb/w sensor

Select maximum brightness of the halogen lamp

Inspect the image on screen. No lines onlysnow or noise should be visible.

Snap the image and save it to a test patient tocompare it later time.

Grey filter


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Data input fields

Start the service software (see "Openingthe Test Tools program").

Select the datatab.

Driver information field

type HW instrument type selection.DateEE EEPOM programming date.Serial Nr. entry of the serial number.Date VCGIFGrabber driver date.

Enter defaults

Enter the default values (factory settings) for

temperature levels and sensor.After changing the entries,click on the save databutton.

Save data

The data is saved in the EEPROM of the VISUCAM litecontrol system.

Temperature levels field

These preset values must not be changed.

high temperature fixed value 085 corresponds with 50C

critical temperature fixed value 105 corresponds with 60C

The halogen lamp will be switched off.

An error message will be displayed.

Sensor field

This field shows the camera positions currently stored.HP-Pos0 B/W camera sensor position in steps (steps between light barrier and B/W camera

sensor)

P0-P1 color camera sensor position in steps (steps between B/W camera sensor andcolor camera sensor).


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Input and output signals of the electronic system

Start the service software (see "Opening the Test Tools program").

The in / out tab is displayed.

By clicking on the relevant function,

you can check the function or switch itON and OFF.The display box shows the respectivevalues..

Checking the potentiometer input

Click on Rheostat (brightnesspotentiometer) and turn thepotentiometer.

Display value ~1 254.

Checking the temperature sensor

Click on Temperature

The display values correspond to:20C38, 50C85, 60C-105.From 50C: max. fan speed.From 60C: instrument shutdown.

Checking the voltages with A/D converter.

Click on the voltage value.

+12V display value 200 5, 5% (12V from power supply unit)+ 5V display value 50 5, 5% (5V from power supply unit)+ 5V1 display value 200 5, 5% (5V1 from the VISUCAM litecontro system)

Checking of LED white, LED IR, fan, shutter camera supply By clicking on the relevant function, you can switch it ON or OFF.

Checking is done visually, acoustically or by measuring the supply voltage.Checking the joystick switch for right/left recognition and the opto-couplers

Operate the joystick switch. Display RHEO of P/O input signal

Move the camera to the left. Display OS/OD of P/O input signal

Move the camera to the right. Display OS/OD of P/O input signal

Light barrier of barrier filter not activated (0 position)Display BAR of P/O input signal

Light barrier of exciter filter not activated (0 position)Display EXC of P/O input signal

Light barrier of camera shift not activated (0 position)Display CAM of P/O input signal

Checking brightness adjustment using the service program

Click on Brightness lamp.

Use the slide to adjust the brightness level. Display level 0-200.Checking the flash function

Click on Brightness flash.

The slider permits you to select the flash brightness. Display value 0-255.

Click on Flash. to trigger the flash.Note: When the flash is triggered, the lamp is set to the selected flash brightness. The

maximum flash brightness is the rated voltage (8V) of the lamp.The flash duration and flash delay can also be selected.

Further functions not described here are not supported by the program.


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Measuring the operating voltages

Input voltage of the power supply unit (X4)

Voltage supplied to the instrument interface

(GIF)

Voltage supplied to the motherboard

Output voltage of the power supply unit+5V (red)+12V (yellow)0V (black)

Voltages present at Interface GIF PCB

Sensor P22 pin 3+5.2V without metal+0.8V with metal and LED onat the sensor

Display from patient sightleft OSright OD

Voltages present at the VISUCAM litelamp Control PCB

11

0V 0V 0V +12V +12V

1+5V

20V

3P23

4+12V

1

+5V

2

0V

3

P22

4

+12V

32

+ 7 V

1

0V

20V

1+5V

X21

X22

C9

R5*C6

C8

C7

C5

R2

R3

L5

C14

C2 D2C3

U1

D3

R18C4

R1

R8

R10

R14

C11

C12

R7C10

R6

L6

R13

R11R12

X2 X6 X7

X8*

R17

1

44

R4

C13

X4

X5

X1

X3

1 5

+5Vlogic0

V0V

+12Vlamp

+12Vcameras

X4 Sensor left right

movement

X7 Fixation lamp

X6 Fan

X5 Voltage supplycamera head

+5V

+5V+5V0V0V0V

+12V+12V0V

0V0V

+5V+5V

+12V+12V

0V0V

+5V

X43X41

Signals

Temperature sensor

Brightnes, max. 1,44V, min. 88mV

Shutter, ON +3,6V, OFF 0V

Fan, max. +11.8V, normal +7V

GND

+5V1

GND


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Software VISUCAM lite

FolderDatabase

The Databasefolder is on drive D: (partition2) and contains:

the Visucam.mdbdatabase,

the Imagefolder for all stored images,

the Sequencesfolder for the video streams

the TNI`sfolder for all thumbnails.

Folder Images

The folder Imagescontains all images (black and white and color) in BMP format.

Folder Sequences

The folder Sequencescontains all video streams in AVI format.

Folder TNIs

The folder TNI`scontains all the thumbnails of all stored images in JPG normat.


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VISUCAM Saveand Updatefolder

In the Savefolder the files Main.iniand visucam.mdbare saved as the last correct files duringstart up. The copies of this files are stored every times if the system is starting up.In the Update folder there are temporarily data during software update. Normally empty!

VISUCAM InstallsfolderA lot of different drivers are placed in this installsfolder.

VISUCAM HP Driverfolder

In the Hawlett-Packard/HPZ/Gluefolder, the install driver of the HP Deskjet 940c are placed.See also printer installation.


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System check

Mechanical check

Check that the camera head can be swiveled all the way from the left to the right. ............

Check that VISUCAM litefundus camera be easily moved and securely locked on the basewithin the entire working range...........................................................................................

Check that the ophthalmoscope lens is clean ....................................................................

Check that the connectors are firmly seated. .....................................................................

Check that the built-in filters and optics are clean. .............................................................

Check all cables for any damage or traces of wear............................................................

Check that all labels and lettering are legible and complete. ..............................................

Check the glide plate for any traces of wear.......................................................................

Electrical function check

Check that all electrical connections have been made and securely mounted. ..................

After switching on VISUCAM lite, check the booting process of the computer. ...................

Listen for any unusual noise made by the fan and the hard disk. .......................................

Check whether the operating software is starting properly ................................................. Check whether the exciter filter drive is initialized .............................................................

Check whether the barrier filter drive is initialized...............................................................

Check the brightness control of the halogen lamp and its remaining service life. ...............

Check the illumination for the finder camera. .....................................................................

Check the proper functioning of the finder camera and the image produced by it on themonitor...............................................................................................................................

Check that the B/W camera sensor and color camera sensor can be selected .................

Check that the focusing system is functioning properly and moving easily ........................

Check whether images can be captured using the B/W camera sensor and whether theimages can be saved ........................................................................................................

Check whether images can be captured using the color camera sensor and whether theimages can be saved . .......................................................................................................

Check whether archiving on an external unit is possible(Option: network, USB Flash Drive, CD writer)...................................................................

Check if a print out of images with the connected printer is possible (optional) ..................

Check the screen settings (contrast, brightness, resolution) .............................................

Check the screen resolution setting 1024 x 768, 24bit, True Color ....................................


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Adjustment Circle

This Circle can be used for finder camera adjustment.

sm_30_4044_a1_en service instructions visucam lite ab okt. 2.pdf

Documents