Kowa K9L48B, Service Manual, Page: 50 / 60

GG-09001 Edition 1.3
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Irregularity Check item Remedy
Flash lamp does not light
up.
Flash lamp is improperly fixed.
Fix the flash lamp properly. Refer to “12-3
Replacing with new flash lamp”.
Flash lamp is whitened.
Replace with a new replacement lamp.
The flashlight bulb is degrading. Refer to
“12-3 Replacing with new flash lamp”.
Fuse is blown.
Replace with a new replacement fuse.
Refer to “12-3 Replacing with new flash
lamp”.
Check that the cable between power
supply unit and computer connect
correctly. (In the case of using
K9L-VA48 series or K9L-RL48 series.)
Connect the cable correctly.
Check the contacts between the video
adapter (K9L-VA48 series or K9L-RL48
series) and upper mount of the optical
head unit.
Clean contacts, video adapter and upper
mount.
Check settings and wiring of the DSLR.
(In the case of using K9L-RL48 series.) Check settings according to instruction
manual of the video adapter.
There is no flash when push shutter
button.
(The sound of operating from DSLR is
heard, and computer captures black
image.)
Clean contacts between sync terminal
adapter and accessory shoe.
Failure of the trigger PCB is suspected.
Replace trigger PCB according to “6-3.
Replacing trigger PCB.”
The captured images are
too bright abnormally.
Light intensity changes, when turning
the flash intensity knob. Check settings of the DSLR according to
instruction manual of the video adapter.
Light intensity does not change, when
turning the flash intensity knob. Failure of IGBT is suspected. Replace
IGBT according to “8-5. Replacing IGBT.”