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Troubleshooting
No Sound
Refer to Schematic Diagram or Chassis Block Diagram, find out the part of trouble.
In advance check the setting mode according to Instruction Manual.
All mode?
No
D-SUB, AV4
AV1, AV2, AV3
Check the line from
IC1001 in Main Unit
to AV1, AV2 or AV3.
All manuals and user guides at all-guides.com
Yes
Is there
sound signal from
monitor out
Yes
No Sound from Headphone
No Sound from Speaker
No Sound from Woofer
No Sound from Headphone,
Woofer & Speaker
Check around IC1002 in Main Unit. Also check
the line from IC1001 to D-SUB or AV4 via IC1002.
No
Check the line from IC1001
(Pin 52 or 54) in Main Unit to
IC121 via IC002, IC003, IC001
in SUB CPU Unit.
-26-
Check around IC1001
in Main Unit.
Check around IC031
in SUB CPU Unit.
Check around IC071
in SUB CPU Unit.
Check around IC004
in SUB CPU Unit.
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