Nikon DIAPHOT 300 Instructions Manual page 58

3. Electrical
Symptoms
Causes
Countermeasures
Pilot lamp does not
light when main
power switch is
turned ON
Power cable connector almost
unplugged
Connect power cable securely.
Built-in fuse of power supply
unit blown out
Contact your dealer.
Lamp does not
light
Lamp burnt
Replace with specified lamp.
Lamp burnt too
early
Non-conforming lamp
Replace with specified lamp.
Light intensity
control impossible
with dial
Lamp burnt
Replace with specified lamp.
Non-conforming lamp
Replace with specified lamp.
Cable connection improper
Connect cable securely.
Ex-control
impossible
CTRL connector loose
Connect CTRL connector
securely.
Light intensity control dial on
power supply unit not set to
CTRL position
Set to CTRL position.