Pioneer PDP-R04E, Service Manual

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4
C
D
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B
E
PDP-R04G
No sound from the speakers (2/2)
Is it sound for every function
that doesn't come out?
No
Yes
B
Is a signal output from
IC8002?
Check around IC8002 and
check the communications
between IC8002 and the
microcomputer.
No
Yes
B
Has the signal arrived at
TP8668 and TP8667?
Check around IC8003 and
check the buffer circuits.
No
Yes
B
Has the signal arrived at
TP9301 and TP9303?
Check the flexible cables
between the AV BOARD Assy
and MR MAIN BOARD Assy
and between the MR MAIN
BOARD Assy and MDR Assy.
No
Yes
Has the symptom been
settled when the system
cable is replaced?
The panel is defective.
Finishing troubleshooting
No
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A