Zeiss S88 Instructions For Use Manual page 146

146
Problem
Autofocus option is inopera-
tive
Poor focusing result or none
at all.
Poor focusing result or none
at all.
Focused video image on
monitor, but unfocused
image in surgical micro-
scope.
G-30-1426-en
Maintenance / Further information
Autofocus option
Possible cause
Camera control unit (CCU)
switched off.
Error code display: E20
Monitor switched off.
Failure of the autofocus op-
tion
Focusing of the
camera not matched to fo-
cusing of the surgical micro-
scope.
Measuring field (ROI) incor-
rectly positioned.
Suspension system moved
during focusing.
No object in focusing range. •
No object with sufficient
contrast in focusing range.
Incorrect entry for camera
orientation (left/right), menu
item "AF-CCD Position".
Incorrect entry for the video
focal length in menu item
"AF-V-FOC.".
Video camera not correctly
oriented.
Setting of diopter rings on
eyepieces has
changed.
S88 Floor Stand with Lifting Column
Remedy
• Switch on
CCU.
• Switch on the monitor.
• Contact service dept.
video • Focus the microscope
image, then the video
image.
• Correct the ROI position
in configuration mode 4.
• Do not move suspension
system during focusing.
Reposition surgical mi-
croscope.
• Reposition surgical mi-
croscope or focus manu-
ally.
• Activate the Video-AF
mode and change the
video camera orienta-
tion.
• Activate configuration
mode 4 and enter the
correct focal length.
• Turn video camera so
that video image corre-
sponds
observer's viewing di-
rection.
• Set diopter rings to zero
been or to the correct value.
See
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page 116
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page 106
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Issue 9.0
Printed on 28. 01. 2009