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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.
Yes
No
No
Yes
All mode?
Check around IC031
in SUB CPU Unit.
D-SUB, AV4
No Sound from Headphone
Is there
sound signal from
monitor out
Check around IC1001
in Main Unit.
Check the line from IC1001
(Pin 52 or 54) in Main Unit to
IC121 via IC002, IC003, IC001
in SUB CPU Unit.
Check around IC1002 in Main Unit. Also check
the line from IC1001 to D-SUB or AV4 via IC1002.
Check the line from
IC1001 in Main Unit
to AV1, AV2 or AV3.
AV1, AV2, AV3
No Sound from Speaker
No Sound from Headphone,
Woofer & Speaker
Check around IC071
in SUB CPU Unit.
No Sound from Woofer
Check around IC004
in SUB CPU Unit.
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