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
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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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Service Instructions VISUCAM
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Update information
Issue Comments
22.09.2003 Issue 1
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Service Instructions VISUCAM
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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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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.
Switch on VISUCAM liteand check its functions.
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.
Close the camera head(see: Opening and closing the camera head).
Switch on VISUCAM liteand check its functions.
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.
Close the camera head(see: Opening and closing the camera head).
Switch on VISUCAM liteand check its functions.
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.
Close the camera head(see: Opening and closing the camera head).
Switch on VISUCAM liteand check its functions.
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
Open the camera head (see: Openingand closing the camera head).
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.
Close the camera head (see: Opening andclosing the camera head).
Switch on VISUCAM liteand check its functions.
Clamp
Hole
Securing screw
Clamp screw
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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.
Close the camera head (see: Openingand closing the camera head).
Switch on VISUCAM liteand check itsfunctions.
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.
Close the camera head (see: Opening and closing the camera head).
Switch on VISUCAM liteand check its functions.
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.
Switch on VISUCAM liteand check its functions.
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
Open the camera head (see: Openingand closing the camera head).
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.
Close the camera head (see: Opening andclosing the camera head).
Switch on VISUCAM liteand check itsfunctions.
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).
Switch on VISUCAM liteand check its functions.
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.
Replace the opto-coupler by a new component.
Re-route and connect the cable for the opto-coupler to
X4control PCB. Close the camera head (see: Opening and closing the
camera head).
Switch on VISUCAM liteand check its functions.
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.
Switch on VISUCAM liteand check its functions.
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
Open the camera head (see: Openingand closing the camera head).
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
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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
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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.
Close the camera head (see: Opening and closing the camera head).
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.
Replace the opto-coupler by a new component.
Re-route and connect the cable for the opto-coupler to X6control PCB.
Close the camera head (see: Opening and closing the camera head).
Switch on VISUCAM liteand check its functions.
Check and, if necessary, adjust the horizontal image positions of color cameras1 and 2 (see
Adjusting the horizontal image positions of the color cameras).
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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).
Open the camera head (see: Openingand closing the camera head).
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.
Close the camera head (see: Openingand closing the camera head).
Switch on VISUCAM liteand check itsfunctions.
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
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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.