Zeiss VISULAS YAG III, User Manual

Page: 99 / 126

Maintenance and care
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93
Note: Follow the instructions given.
Warning message: Correct the malfunction as instructed in the
troubleshooting tables in the VISULAS 532s or
VISULAS Trion user manual.
If a fault occurs, which cannot be remedied by using the troubleshooting
tables, please contact a Carl Zeiss Meditec authorized specialist, citing the
error number displayed.
Label the instrument as being out of order and remove the key from the key
switch.
Laser slit lamp faults
Fault Possible cause Remedy
No function at all - Laser console power cable not
connected.
- Laser console not switched on.
- Connecting cable not properly
inserted into laser console.
- Fuse defective.
- Connect the power cable.
- Switch on the laser console.
- Insert connector into socket
(5, 6, Fig. 8).
- Replace the fuse.
(  page 94)
No slit illumination - Slit is closed.
- Halogen bulb defective.
- Adjust slit width using knob
(10, Fig. 5 and Fig. 13).
- Replace halogen bulb (  page 95).
Poor slit illumination - Selected lamp voltage too low.
- Halogen bulb not properly inserted.
- Slit length not correctly adjusted.
- Slit width not correctly adjusted.
- Filter selector not correctly set.
- Set halogen lamp brightness as
required using the brightness
control (9, Fig. 3).
- Ensure that halogen bulb is
properly inserted (

page 95)
- Adjust slit length using knob
(9, Fig. 5 and Fig. 13).
- Adjust slit width using knob
(10, Fig. 5 and Fig. 13).
- Check position of filter selector
knob (white line should be pointing
upward).
Difficulties when looking
through corneal microscope - Magnification of corneal
microscope not correctly adjusted.
- Interpupillary distance of binocular
tube not correctly adjusted.
- Eyepieces not correctly adjusted.
- Turn magnification changer knob
(7, Fig. 5 and Fig. 13) to select the
desired magnification.
- Adjust interpupillary distance of
binocular tube.
- Adjust eyepieces.
Movement of instrument
base too stiff - Instrument base locked with fast-
action base lock.
- Base locked with clamp screw.
- Unlock fast-action base lock
(8, Fig. 3).
- Unscrew clamp screw (5, Fig. 3).