Laser Slit Lamp Faults; Replacing The Halogen Lamp - Zeiss VISULAS YAG III Mode D'emploi

60
Fault
No function at all
No slit illumination
Poor slit illumination
Difficulties when looking through
corneal microscope
Movement of instrument base
too stiff
Maintenance / Miscellaneous

Laser slit lamp faults

Possible cause
- Control unit power cable not connected.
- Control unit not switched on.
- Connecting cable not connected to control
unit.
- Fuse defective.
- Slit is closed.
- Halogen lamp defective.
- Lamp voltage setting too low.
- Halogen lamp not properly inserted.
- Incorrect slit length setting.
- Incorrect slit width setting.
- Filter selector not correctly set.
- Corneal microscope magnification not
properly adjusted.
- Interpupillary distance of binocular tube not
properly adjusted.
- Eyepieces not properly adjusted.
- Instrument base locked with fast-action
base lock.
- Base locked with locking screw.
Remedy
- Connect the power cable.
- Switch on the control unit.
- Insert connector
(5/6, Fig. 9).
- Replace fuse.
( page 61)
- Adjust slit width by turning control
knob (10, Fig. 11).
- Replace the halogen lamp
( page 62).
- Adjust halogen lamp to the required
brightness by turning control knob
(9, Fig. 13).
- Insert halogen lamp properly
( page 62).
- Adjust slit length by turning control
knob (9, Fig. 11).
- Adjust slit width by turning control
knob (10, Fig. 11).
- Check position of filter selector
(white line should be up).
- Turn magnification changer knob
(7, Fig. 11) to select the desired
magnification.
- Adjust interpupillary distance of
binocular tube.
- Adjust eyepieces.
- Unlock fast-action base lock
(8, Fig. 13).
- Release locking screw (5, Fig. 13).
000000-1354-664 VISULAS YAG III 15.08.2005