APP
ENDIX Stereo microscope
ZEISS Troubleshooting Stemi 508
42 435064-7044-001 01/2015
6.2 Troubleshooting
Description of fault Cause of error Troubleshooting
Stereo microscope illumination
cannot be switched ON.
Power supply interrupted.
Power switch not switched ON
Check or establish connection to
power supply. Switch power switch
on back of stereo microscope ON.
Power unit faulty. Replacing the power unit, see
Section 5.2.1 on page 36
Vertical reflected-light illumination is
not lit.
Power supply cable RJ 12 not
plugged in.
Insert RJ plug correctly, see Section
3.2 or 3.3 on pages 23 and 25
Additional reflected-light
illuminators are not lit.
Power supply cable RJ 12 not
plugged in.
Reflected light not switched ON or
dimmed.
Insert RJ plug correctly, see Section
3.2 or 3.3 on pages 23 and 25
Press and turn knob Fig. 17/1several
times to switch reflected light ON
and to increase its intensity; see
Section 4.2 on page 30
Transmitted-light illuminator does
not light up
Transmitted light not switched ON
or dimmed.
Press and turn rotary / push-button
Fig. 20/2 to switch illumination ON
and to increase its intensity; see
Section 4.3 on page 33
Transmitted light not connected. Open stand K EDU or K LAB and
according to Section 5.2.2 and 5.2.3
on pages 37 and 38
Connect the plug-in connectors of
the LED illumination.
Transmitted-light illuminator dirty or
control lever cannot be actuated.
Liquids or foreign matter in the
transmitted-light unit.
Open and clean stand K EDU or K
LAB and/or eliminate foreign matter
according to Section 5.2.2 and 5.2.3
on page 37 and 38
Microscope mount moves down by
itself.
Focusing drive too easy to move. Set ease of motion of the focusing
drive, see Section 3.2 on page 23
Shoul
d any other faults occur or should you have queries regarding troubleshooting, please contact your
regional ZEISS representative.
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