Sony KDL-32W700C / KDL-32W705C / KDL-40W700C / KDL-40W705C / KDL-48W700C / KDL-48W705C / KJ-32W700C / KJ-40W700C / KJ-48W700C Service Manual ▷ View online
49
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
Check the HP out
(use Video input)
NG
OK
Check the
Digital out
Digital out
(use Video input)
IC9000 is NG
No signal
#1
OK
Check the IC4501
VDD 3.3V
(IC4501 pin9)
DC/DC converter is NG
See No POWER - DDCON/LDO.
Check the
IC4501 VSS -3.3V
(IC4501 pin6)
NG
OK
Check the
X_AUDIO_MUTE_
SPHPLO
pin5 is HIGH?
IC4501 NG
Check the
CN3103 pin1
(SPDIF input)
No signal
OK
CN3103 is NG
Check the
Speaker Sound
(use Video input)
Power Amp Block (F4601,IC4601,etc)
is NG. See item: LED blinking: 3x
(Audio error)
OK
No Problem
NG
Check the solder
of IC4501 CP & CN
(7&8pin) & C4501
Solder NG
NG
OK
NG
OK
IC4501 NG
Check the
INR+ & INL+ pin1 &14.
(at CL4502 and CL4501)
Signal is coming?
OK
IC9001 is NG
No signal
NO
This is MUTE situation.
Check IC9000
OK
Note:
(AYU2/
(AYU2/
Ayu2L
) – IC9000
(Brownie)- IC9001
50
Troubleshooting
Troubleshooting Reference
TUS board Side B
CN3103
Vcc
Vin (pin 1)
Troubleshooting Reference
TUW board Side B
51
Troubleshooting
CN3103
Vcc
Vin (pin 1)
52
Troubleshooting
Troubleshooting Reference
BAX-L board Side A
IC4501
INR
+
(
P
in
1)
X_
A
UDIO
_
M
UT
E
_
M
UT
E
_
S
P
H
L
O
(Pin
5
)
Vs
s
(P
in
6)
CN
(P
in
7)
C
P
(P
in
8)
V
DD
(P
in
9)
IN
L
+
(
P
in
14)
C
4501
C
L
4502
C
L
4501
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