Maintenance / Miscellaneous
Troubleshooting tables
Faults are indicated as system information on the control unit display.
The user is also alerted by short beeps. Remedy the fault according to
the troubleshooting tables below.
If a fault occurs which cannot be remedied by using the following
tables, please contact a Carl Zeiss authorised specialist, citing the error
message displayed.
Label the instrument as being out of order and remove the key from
the key switch.
Error messages on the VISULAS YAG III control unit
Message
LASER STOP is activated; to continue,
please unlock.
Please release actuator!
Door interlock is active, please close
door.
Temperature deviation, please wait!
Slit lamp not connected!
No foot switch connected!
In the STANDBY and READY modes,
demo is displayed beside the info
button. The laser cannot be fired.
000000-1354-664 VISULAS YAG III 15.08.2005
Remedy
• Unlock the LASER STOP button.
• Release foot or hand switch.
• Shut the door or check that the shorting plug is correctly plugged into the
yellow socket.
• The internal monitoring systems have detected an excess temperature. Please
wait a moment.
• If this fault occurs frequently, ensure that the instrument's ventilation slots
are not covered and that the ambient temperature falls below 35 °C.
• Check that the slit lamp is properly connected.
• Connect the foot switch or operate the instrument using the hand switch.
Select the required firing mode in the
• Switch the instrument off and then on again. While the progress bar is active
during the system test (see
on the screen, then press the control knob/button.
Information mode
Power-up mode
, page 40), touch the ZEISS logo
57
.