PDP-R06XE
64
1
2
3
4
1
2
3
4
C
D
F
A
B
E
No sound from the speakers (1/2)
No sound from the speakers
Yes
Is the sound muted?
No
Cancel muting and check
the sound with the
headphones again.
Is the volume set to "0"?
Raise the volume and
check the sound again.
Yes
No
Are the headphones
connected?
Disconnect the headphones
and check the sound from
the speakers again.
Yes
No
Is only the sound of TV not
output?
Is only the sound from the
HDMI connector not output?
Is only the sound from
the front input connector
not output?
No
No
Yes
Yes
Yes
Is a signal input to IC4401?
(pin 2)
Check around FE (U4401)
and communication between
FE and the microcomputer.
No
Yes
Are the signals output from
IC4401?
(pin 30), (pin 31)
Check the communications
between the FE and IC4401
and around IC4401.
No
Yes
Are the signals input to
IC4804?
(pin 19), (pin 20)
Check between IC4401 and
IC4804.
Check between SCART
connector and IC4804.
No
Yes
Are the signals output from
IC4804?
(pin 13), (pin 14)
Check around IC4804
and communication between
IC4804 and the microcomputer.
Check around IC6405
and communication between
IC6405 and the microcomputer.
No
Yes
Is the flexible cable correctly
connected between CN4001
and CN7804?
Plug the flexible cable in
correctly and check the
sound again.
Yes
No
No
No
Yes
Is only the sound from the
SCART input connector not
output?
Yes
No
A
50 51
Are the signals output from
IC6405?
(pin 7), (pin 8)
Yes
56 57
49
53
52
55
54
Yes
Does the symptom
disappear after the system
cable is replaced?
Failure in the panel
Finished
No