DOWNLOAD Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ↓ Size: 53.63 MB | Pages: 127 in PDF or view online for FREE

Model
KDL-42W850A KDL-47W850A KDL-55W850A
Pages
127
Size
53.63 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-42w850a-kdl-47w850a-kdl-55w850a.pdf
Date
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Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ▷ View online

RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BA2S Board (AEP) B2B > Side A (Not applicable for this model)
(
)
(
pp
)
CN3102
R3150
R3149
RB5008
BA2S AEP B2B > A-SIDE
121
C312
8
C312
7
C312
6
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BA2S Board (AEP) B2B > Side B (not applicable for this model)
(
)
(
pp
)
C7012
BA2S AEP B2B > B-SIDE
122
RB1G
CHASSIS
W850A
Troubleshooting
Size
B* Board Type G* Board Type
42”
BA2-S GL2S
3-5. No Picture
3-5-3. No Picture UC/GA/CH (BA2-S UC/GA/CH, BKX)
(*)
47”
BA2-S
GL2S
55”
BA2-S
GL2E
No Picture GA
Video 1
Video 2 
Component
Note: 
(AYU2) – IC9000
No Picture
Check if input  OSD 
is GREY OUT
Check J3101
connection, 
VIDEOA DET
No Picture
Check if input  OSD 
is GREY OUT
No Picture
NG
Check J3104  Conn
VIDEOB_DET, 
CR DET
Check if input  OSD 
is GREY OUT
Check J3104  
Connection, 
VIDEOB DET
NG
NG
(Brownie)- IC9001
Check wave between
C3106 and IC9001
Detailed check
J3101 signal path
NG
VIDEOA_DET
Check wave 
Between C3120/C3121
and IC9001
Detailed check
J3104 signal path
NG
OK
CR_DET
Check wave between 
C3120 and IC9001
Detailed check
J3104 signal path
NG
VIDEOB_DET
OK
OK
HDMI EQ [IC5009] 
Problem
NG
OK
NG
Detailed SDIF path 
Check between 
IC9001 and IC9000
OK
Confirm  HDMI 
input working
OK
OK
NG
Detailed SDIF path 
Check between 
IC9001 and IC9000
NG
OK
Confirm  Analog RF 
input working
Check signal 
between IC9001 and 
IC9000 [R8633]
A
2 [IC9000]
OK
Detailed TMDS path 
check between 
IC9001 and IC5009
Confirm other analog
NG
Check signal 
NG
OK
Confirm  Analog RF 
input working
Check signal 
between IC9001 and 
IC9000 [R8633]
A
2 [IC9000]
OK
NG
Ayu2 [IC9000] 
Problem
Confirm other analog
Input working
Ayu2 [IC9000] 
OK
between IC9001 and 
IC5009 [RB5008]
Brownie [IC9001] 
OK
Brownie [IC9001] 
Problem
Ayu2 [IC9000] 
Problem
Brownie [IC9001] 
Problem
123
Problem
Problem
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BA2S Board (PA)  > Side A 
(
)
J3104
J3104
J3101
R8627
RB5008
BA2S PA  > A-SIDE
6
0
1
2
3
124
C310
6
C312
0
C312
1
C312
2
C312
3
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