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
Troubleshooting Reference
BA2 board Side B (Not applicable for this model)
BA2 board Side B (Not applicable for this model)
CL4512
CL4511
3 Vcc 3.3V
Vee -3.3V 6
4 CP
5 CN
C4511
CNT 7
1 INL
INR 10
73
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)
V
e
CL4512
e
e
-3.3V
6
CNT
7
INR
10
3
Vcc
Vcc
3.3V
4
CP
CP
5
CN
CN
1
INL
INL
CL4511
74
C4511
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
1
Check fuse F4601
Fuse short
Fuse open
2
Check connectivity audio Vcc to GND
C4606 – GND
C4607
C4606 – GND
C4607
GND
No short to GND
Either 1 short to GND
C4607 – GND
C4608 – GND
C4609 – GND
C4608 – GND
C4609 – GND
3
Check connectivity audio +3.3V_MAIN to GND
(only for BKE and BKX board)
IC4601 (Pin8) – GND
IC4601 (Pin27) – GND
(only for BKE and BKX board)
IC4601 (Pin8) – GND
IC4601 (Pin27) – GND
No short to GND
Either 1 short to GND
4
Check connectivity audio output to GND.
CN4601
Pin 1 – GND
Pin 2
CN4601
Pin 1 – GND
Pin 2
GND
No short to GND
Either 1 of pin short to GND
Pin 2 – GND
Pin 3 – GND
Pin 4 – GND
Pin 3 – GND
Pin 4 – GND
N t
Size
B*
Board
Type
G*
Board
Type
46”
BM
G3A
75
Note:
(AYU2) – IC9000
(Brownie)- IC9001
(AYU2) – IC9000
(Brownie)- IC9001
46”
BM
G3A
55”
BM
G3B
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
Troubleshooting Reference
BA2 board Side A (Not applicable for this model)
BA2 board Side A (Not applicable for this model)
Pin
Pin
Pin
Pin
1
2
3
4
CN4601
CN4601
76
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