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MAINTENANCE AND CHECKUPS
TROUBLESHOOTING
TROUBLESHOOTING GUIDE
If you suspect a problem, check the possible cause by means of the check list below.
If the check list below does not solve the problem, or if the problem is not included in the list, contact
your dealer or TOPCON (see the back cover).
CAUTION
To avoid electric shocks, do not attempt overhauling, rebuilding or
repairs. Ask your dealer for repair.
Check List
Problem Possible cause Check Page
Illumination lamp
does not work
Plug of lamp house cover is switched off Insert plug. 17
Cable connection is disconnected Check cable connection. 20
POWER switch is OFF Turn ON POWER switch. 20
Brightness adjustment knob is the mini-
mum
Turn up brightness adjustment knob. 25
Illumination lamp is broken Replace it with a new illumination lamp. 30
Socket has deteriorated Replace it with a new socket. 32
Slit width is the minimum Rotate the Slit width controls
25
Illumination field is
not uniform/is shady/
is dark
Filter selector lever is out of position Click filter selector lever. 28
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