
87
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING GUIDE
If there seems to be a malfunction, first check the cause, following the steps in the check-list below. If
the problem cannot be resolved or the malfunction is not listed in the "Problem" section of the check-
list, contact your distributor.
Check-list
CAUTION
The lamp is still hot just after turning off the illumination. Therefore, use
heat-resistant gloves, etc. to replace a lamp. Otherwise, you may be
burned.
Problem
Possible causes
Remedy
Reference
page
The spare lamp indicator
light is blinking on the panel.
The spare lamp has burned out or
has not been installed.
Replace the spare lamp or install a
new one.
33, 97
The illumination lamp does
not light up.
The light intensity is adjusted to "0".
Adjust the illumination light intensity
as required.
55
The input power plug is not
connected to the power outlet.
Connect the power plug to the power
outlet securely.
-----
The power switch is not ON (or at " "
position).
Put the power switch ON (or " ").
-----
The illumination lamp has burned out.
Replace the illumination lamp.
33, 97
The terminal screw is not tightened
securely.
Re-tighten the terminal screw.
97
The circuit breaker is in operation.
Reset the end of the circuit breaker as
before.
98
The illumination blinking switch of the
foot switch is switched to OFF.
Press the illumination blinking switch
of the foot switch again.
59, 60, 61
62, 63
LAMP A has not been completely
changed over to LAMP B.
Turn the lamp house unit correctly to
change it.
33, 79, 97
The lamp house unit has not been
fully pushed into the instrument.
Push in the lamp house unit until it fits
snugly.
33, 97
The image remains out of
focus, even after focusing.
The weight of the 2nd arm vertical
movement is not balanced.
Adjust the balance with the 2nd arm
balance adjustment handle.
41
The illumination field is
uneven (shade) or dark.
The lamp has not been inserted
correctly.
Insert it correctly.
97
The specified lamp has not been
used.
Replace the lamp with the specified
lamp.
97
The initial switch does not
work except for the X-Y
translator.
The instrument is in the front lens use
ready condition (disconnected or
take-out condition).
Store the front lens.
46, 47, 70
72, 73
The light cannot be adjusted
with the illumination light
intensity adjustment switch of
the foot switch.
The instrument is in the front lens use
ready condition (disconnected or
take-out condition).
Store the front lens. Adjust the light
on the 1st arm panel.
55, 56, 57
72, 73
The illumination angle cannot
be changed.
The instrument is in the front lens use
ready condition (disconnected or
take-out condition).
Store the front lens.
68, 69, 70