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Model
KDL-46W950A KDL-46W954A KDL-46W955A KDL-46W957A KDL-55W950A KDL-55W954A KDL-55W955A KDL-55W957A
Pages
127
Size
54.97 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / COMMON
File
kdl-46w950a-kdl-46w954a-kdl-46w955a-kdl-46w957a-kd.pdf
Date
PREV: Sony KDL-40W900A / KDL-40W905A / KDL-46W900A / KDL-46W904A / KDL-46W905A / KDL-55W900A / KDL-55W904A / KDL-55W905A Service Manual

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 
Board Name
Board PWB  (B side)
Detail
BA2-S/W
R8558
R8558
BM
R8558
R8558
R8558
61
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
Troubleshooting Reference 
Board Name
Board PWB  (A side)
Detail
BKJ
R8558
R8558
R8558
BKE
R8558
R8558
62
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
3-3.  No Sound
No Sound
“Audio System”
Check the 
“Speakers setting”
Change to 
“TV Speaker”
“TV Speakers”
Change the Speaker
Harness
Replace
the B* Board
NG
Symptom 
improvement
No Sound:  Audio 
B* Board
Speaker Harness
Speaker
NG
Symptom 
improvement
No Sound:  Tuner
No Sound:  HDMI
Speaker Harness
Speaker
Size
B*
Board 
Type
G*
Board 
Type
46”
BM
G3A
63
46”
BM
G3A
55”
BM
G3B
RB1G
CHASSIS
W950A/ W954A/ W955A/ W957A
Troubleshooting
3-3-1.  No Sound : Audio (For all models) 
Size
B*
Board 
Type
G*
Board 
Type
46”
BM
G3A
#1
No signal
#1 
Ch
k th
No signal
Check the solder
55”
BM
G3B
Check the 
Digital out 
(use Video input)
IC9000 is NG
Check the 
IC4501 VSS -3.3V
(IC4501 pin6)
Check the 
CN4801 pin1
(SPDIF input)
OK
OK
Check the solder 
of IC4501 CP & CN
(7&8pin) & C4501
NG
OK
NG
OK
NG
IC4501 NG
CN4801 is NG
Check the 
Speaker Sound
(use Video input)
Power Amp Block (F4601,IC4601,etc) 
is NG See item: LED blinking 3x
OK
Solder NG
Check the HP out
NG
OK
OK
Check the 
X_AUDIO_MUTE_
SPHPLO
pin5 is HIGH?
(
p )
is NG. See item:  LED blinking 3x 
(Audio error)
NO
This is MUTE situation.
Check IC9000
Check the HP out
(use Video input)
OK
No Problem
NG
Check the 
INR+ & INL+ pin1 &14. 
(at CL4502 and CL4501)
IC9001 is NG
No signal
OK
Check the IC4501
VDD 3.3V
(IC4501 pin9)
DC/DC converter is NG
See No POWER DC / DC 
Converter Check
NG
(at CL4502 and CL4501)
Signal is coming?
OK
Note:
64
OK
IC4501 NG
Note: 
(AYU2) – IC9000
(Brownie)- IC9001
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