Labomed TCM 400 FLR, User Manual

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TROUBLESHOOTING
Fluorescence Attachment User Guide 8
Problem Cause Remedy
Optical System
1) The mercury lamp lights up, Filter slider is not engaged properly Adjust filter to required setting.
but field of view remains dark in light path.
2) Image is unclear, blurred or a) Objectives and/or filters are dirty. Clean them with tissue/lens paper.
has poor contrast. b) Field iris diaphragm is not Adjust field iris diaphragm so
fully opened. that the image circumscribes
the field of view.
3) Field of view is vignetted or a) Objective is not engaged properly Be sure when rotating nosepiece
it is not evenly illuminated. in light path. that objective clicks into position.
b) Filter slider is not engaged properly
Engage required filter
in light path. properly in light path.
c) Mercury lamp is not centered Center mercury lamp correctly.
properly. This process is shown on Page 7
d) Beam focus deviates from correct Adjust the condenser knob.
position. This process is shown on Page 7
4) Mercury lamp is not illuminating Some mercury lamps may not ignite Press the Trigger button provided
after switching power supply ON. the first time the power supply is on the front panel of power supply
turned ON. unit and wait for lamp to ignite.
Electrical System
1) Lamp housing / Main switch a) Power cord is not connected Make sure power cord is firmly
indicator does not light up. properly. in place.
b) The fuse is blown. Replace with fuse of same type
and rating.
2) Main switch indicator lights up, a) Connector cable is not engaged Verify connection is secure.
yet mercury lamp remains OFF. properly.
b) Mercury lamp is not mounted. Install mercury lamp as
indicated on Page 5
3) Light demonstrates partial a) Sufficient time has not been Allow at least 5 minutes after
flickering. allowed for the lamp to fully turning power supply ON for the
illuminate. lamp to fully illuminate. If flickering
persist press Trigger button.
b) Lamp's service life has expired. Replace the mercury lamp