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
3-3-3. Main Board Power Off Checking (for Main SP Lch & Rch)
No
Checking Item
OK
NG
5
Check connectivity audio output path (only for BA2
and BM board):
L4601 (near to IC side) – CN4601 Pin1
L4602 (near to IC side) – CN4601 Pin2
L4603 (
and BM board):
L4601 (near to IC side) – CN4601 Pin1
L4602 (near to IC side) – CN4601 Pin2
L4603 (
t IC id )
CN4601 Pi 3
Must have good connection
(~0
(~0
Ω)
Open circuit.
L4603 (near to IC side) – CN4601 Pin3
L4604 (near to IC side) – CN4601 Pin4
L4604 (near to IC side) – CN4601 Pin4
6
Check connectivity audio output path
(only for BKE and BKX board):
(only for BKE and BKX board):
Must have good connection
(~0
(~0
Ω)
Open circuit.
(
y
)
L4601 (near to IC side) – CN4601 Pin4
L4602 (near to IC side) – CN4601 Pin3
L4603 (near to IC side) – CN4601 Pin2
L4604 (near to IC side) – CN4601 Pin1
L4602 (near to IC side) – CN4601 Pin3
L4603 (near to IC side) – CN4601 Pin2
L4604 (near to IC side) – CN4601 Pin1
(
)
Size
B*
Board
Type
G*
Board
Type
46”
BM
G3A
81
46
BM
G3A
55”
BM
G3B
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
BA2 board Side A (Not applicable for this model)
Troubleshooting Reference
CN4601
P
P
P
P
P
in 1
P
in 2
P
in 3
P
in 4
L4602
L4601
L4603
L4604
82
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
Troubleshooting Reference
BM board Side A
BM board Side A
L4601
L4602
L4604
L4603
CN4601
Pin 4
Pin 3
Pin 2
Pin 1
83
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
Troubleshooting Reference
BKE and BKX board Side A (Not applicable for this model)
BKE and BKX board Side A (Not applicable for this model)
F4601
L4601
L4602
L4603
L4604
L4604
CN4601
Pin 4
Pin 3
Pin 2
Pin 1
84
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