Electrical - Nikon T1-FM Instructions Manual

Vignetting of viewfield and brightness uneven.
ND filter/shutter slider is midway
between changeover positions.
Filter block is midway between
changeover positions.
Field aperture is overly closed.
Lamp centering and focusing are
incomplete.
Objective is midway between changeover
positions.

Electrical

2
Power cord is unplugged.
Power supply voltage setting is incorrect.
Fuses are blown or not inserted.
The lamp input connector is unplugged.
Not using the specified lamp.
Lamp life over.
The lamp clamp screws are loose.
Safety interlock mechanism is activated.
Power supply safety device is activated.
VI Troubleshooting
2 Electrical
Causes
Lamp does not light even though
power supply power switch is on.
Causes
E-26
Corrective Measures
Insert properly in the optical path.
nsert properly in the optical path.
Open until it circumscribes the viewfield.
(P.16)
Center and focus the lamp. (P.18)
Insert properly in optical path.
Corrective Measures
Connect it securely.
Correctly set the setting of the voltage
disply and frequency changeover switch
on the power supply rear panel to match
the local voltage being used. (P.24)
Replace the fuses. (P.24)
Connect it securely.
Use the specified lamp. (P.28)
Replace with new lamp.
Tighten the screws securely.
Securely tighten the socket clamp screw.
Turn off the power, press start reset
switch on power supply rear panel with tip
of thin pen, and turn on power again.