No Sound : Audio (For All Models) - Sony KJ-32W7 C Series Service Manual

Troubleshooting

3-3-1. No Sound : Audio (For all models)

No sound :Audio (for all model) TUS,TUW & BAX-L(HE-L,HM,HE-H,XM-L) board only
#1
#1
No signal
Check the
Digital out
(use Video input)
OK
Check the
Speaker Sound
(use Video input)
NG
OK
Check the HP out
OK
(use Video input)
NG
NG
Check the IC4501
VDD 3.3V
(IC4501 pin9)
OK
No signal
Check the
IC9000 is NG
CN3103 pin1
(SPDIF input)
OK
CN3103 is NG
Power Amp Block (F4601,IC4601,etc)
is NG. See item: LED blinking: 3x
(Audio error)
No Problem
DC/DC converter is NG
See No POWER - DDCON/LDO.
Check the
NG
of IC4501 CP & CN
IC4501 VSS -3.3V
(IC4501 pin6)
OK
Check the
NO
X_AUDIO_MUTE_
SPHPLO
pin5 is HIGH?
OK
No signal
Check the
INR+ & INL+ pin1 &14.
(at CL4502 and CL4501)
Signal is coming?
OK
IC4501 NG
Check the solder
NG
(7&8pin) & C4501
OK
Solder NG
IC4501 NG
This is MUTE situation.
Check IC9000
IC9001 is NG
Note:
(AYU2/Ayu2L) – IC9000
(Brownie)- IC9001
49