Sony KDL-46W950A / KDL-46W954A / KDL-46W955A / KDL-46W957A / KDL-55W950A / KDL-55W954A / KDL-55W955A / KDL-55W957A Service Manual ▷ View online
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
3-2-2. LED BLINKING 3x (Audio Error) – BA2 and BM board only
Size
B*
Board
Type
G*
Board
Type
46”
BM
G3A
F4601,IC4601,etc
(B* Board)
#2
IC4601,etc
(B* Board)
#3
55”
BM
G3B
Check 12.5V
( at F4601)
to GND
Replace F4601
High
enough
Check the IC4601
Out pin 9, 16, 25, 32
Switching 0V to 12V
No
Check the IC4601
pin 18
(at CL4606)
is HIGH?
No
impedance
Low impedance
IC4601 or parts around IC4601 NG
around 300-400kHz
Yes
Yes
Solder NG
IC4601
Check broken parts
IC4601 or parts around IC4601 NG
Check the CN4601
DC level ~2V
(at
No
L4601-L4604
or
C4611-C4614
No
burn or broken ?
Yes
around IC4601
JL4621~JL4624)
C4611-C4614
NG
Yes
Check the IC4601
I2S line pin 5, 6, 7, 8
NG
Replace IC4601
I2S line pin 5, 6, 7, 8
(at CL4601~CL4604)
IC9000 NG
OK
Note:
45
IC4601 NG
Note:
(AYU2) – IC9000
(Brownie)- IC9001
(AYU2) – IC9000
(Brownie)- IC9001
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
BA2 board -Side A (Not applicable for this model)
Troubleshooting Reference
BA2 board -Side A (Not applicable for this model)
C
C
C
C
L4602
C
L4603
C
L4604
CL4601
46
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
BA2 board -Side B (Not applicable for this model)
Troubleshooting Reference
BA2 board -Side B (Not applicable for this model)
IC4601
F4601
9
16
25
32
CL4606
JL46
2
JL462
JL46
2
JL46
2
47
2
1
2
2
3
2
4
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
Troubleshooting Reference
BM board Side B
BM board -Side B
F4601
CL4606
9
16
25
32
CL4
6
0
CL46
0
CL46
0
CL46
0
IC4601
JL4621
JL4622
JL4623
0
2
0
1
0
3
0
4
48
JL4624
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