Pioneer PDP-R05E Service Manual page 169

5
No sound from the speakers (2/2)
A
Is it sound for every function
that doesn't come out?
No
Is a signal output from
No
IC8002?
B
Yes
Has the signal arrived at
No
TP8668 and TP8667?
B
45 46
Yes
Has the signal arrived at
No
TP9301 and TP9303?
B
47 48
Yes
Has the symptom been
No
settled when the system
cable is replaced?
Yes
Finishing troubleshooting
5
6
Check around IC8002 and
check the communications
between IC8002 and the
microcomputer.
Check around IC8003 and
check the buffer circuits.
Check the flexible cables
between the AV BOARD Assy
and MR MAIN BOARD Assy
and between the MR MAIN
BOARD Assy and MDR Assy.
The panel is defective.
PDP-R05E
6
7
No sound from the
sub-woofer
No
Yes
Is sound muting set?
No
Yes
Is the volume set to 0?
No
Yes
Are the headphones
connected?
No
Is a signal output from
No
IC8003?
B
(3), (13)
34 35
Yes
Is a signal output from
No
IC8008?
B
(7), (10)
36 37
Yes
Is a signal output from
No
IC8007?
B
(1), (7)
38 39
Yes
Has the signal arrived at
No
TP7710?
B
49
Yes
Check around the jack.
7
8
Cancel muting then check
again.
Raise the volume then
check again.
Disconnect the headphones
then check again.
Check around IC8003 and
check each input signal.
Check around IC8008.
Check around IC8007.
Check around Q7761.
169
8
A
B
C
D
E
F