No Sound From The Subwoofer - Pioneer PDP-R06XE Service Manual

5
No sound from the speakers (2/2)
A
Is the sound from all inputs
not output?
Yes
Are the signals output from
No
IC4804?
(pin 13), (pin 14)
54 55
Yes
Does the symptom
No
disappear after the system
cable is replaced?
Yes
Finished
5
6
Check around IC4804
and communication between
IC4804 and the microcomputer.
Failure in the panel
PDP-R06XE
6
7

No sound from the subwoofer

No sound from the
subwoofer
Yes
Yes
Is the sound muted?
No
Yes
Is the volume set to "0"?
No
Yes
Are the headphones
connected?
No
Is the flexible cable correctly
No
connected between CN4010
and CN7402?
Yes
Are the signals output from
No
IC4804?
(pin 31), (pin 32)
43 44
Yes
Are the signals output from
No
IC4807?
(pin 1), (pin 7)
45 46
Yes
Is a signal detected at
No
TP7410?
58
Yes
Check around the pinjack.
7
8
Cancel muting and check
the sound again.
Raise the volume and
check the sound again.
Disconnect the headphones
then check the sound again.
Plug the flexible cable in
correctly and check the
sound again.
Check around IC4804 and
each input signal.
Check around IC4807.
Check around Q4827 and
R7408.
65
8
A
B
C
D
E
F