Zeiss VISUREF 150, User Manual

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Maintenance and care
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104
Maintenance and care
WARNING - GENERAL HAZARD
The device may only be opened, put into operation, modified and repaired
by the manufacturer's customer service technicians or specialists expressly
authorized in writing by Carl Zeiss Meditec. If in doubt, insist on seeing
the written authorization or contact Carl Zeiss Meditec directly.
The manufacturer is not liable for damage caused by unauthorized
tampering with the device. Such actions will render any warranty claims
invalid.
Troubleshooting
Problem Cause Solution
No local printing possible
The message "Paper roll in local
printer is empty." will be displayed.
The printer is out of paper. Insert new printer paper.
Please also note the information in
section Replacing the printer paper
roll, page 107 and following.
The device displays the heading
"Error" and the error message "The
operation failed due to an internal
error."
Various internal device failures can
trigger this message.
Reboot the device.
If the message reappears, contact
ZEISS Service.
Incorrect measurement The pupil is smaller than the outer
reticle ring.
Ask the patient to open his or her
eyes wide.
Repeat the measurement.
Patient has an intra-ocular lens
(artificial kens).
Use the illumination parameters in
the "IOL" illumination mode for
measurement.
Repeat the measurement.
Patient moved during the
measurement
Ask the patient not to move until
the measurement is complete.
Repeat the measurement.
The ambient light is too bright. Check the light sources in the
room and make sure that there is
no direct lighting from above on
the device.
Use a slightly darkened room and
repeat the measurement.