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 
BKJ board Side B (not applicable for this model)
(
pp
)
BKJ
BKJ--B Side
B Side
C5073
C5059
C5071
C5072
R5071
113
RB1G
CHASSIS
W850A
Troubleshooting
3-4. RB1 Analog Signal Path
N t
114
Note: 
(AYU2) – IC9000
(Brownie)- IC9001
RB1G
CHASSIS
W850A
Troubleshooting
3-5. No Picture
3-5-1. No Picture AEP Destination (BA2-S AEP, BKE)
No Picture AEP
Note: 
(AYU2) – IC9000
(Brownie)- IC9001
No Picture AEP
SCART CVBS
No Picture
Video 2 
No Picture
Component
No Picture
SCART RGB
No Picture
No Picture
Check SCART_FB
IC9001 V15
[FBIN]
Check CN3101 
Connection
No Picture
Check if input  OSD 
is GREY OUT
No Picture
NG
[
HIGH
]
NG
Check J3104  Conn
VIDEOB_DET, 
CR_DET
Check if input  OSD 
is GREY OUT
Check J3104  
Connection, 
VIDEOB_DET
No Picture
Check SCART_FB
IC9001 V15
[FBIN]
Check CN3101 
Connection
NG 
[
LOW
]
NG
OK
Check wave between
C3106 and IC9001
Detailed check
CN3101 Pin
No.20 signal path
NG
OK
Check wave 
Between C3120/C3121
and IC9001
Detailed check
J3104 signal path
NG
OK
OK [
LOW
]
OK
Check wave between 
C3120 and IC9001
Detailed check
J3104 signal path
NG
OK
OK
Check wave between 
C3107/C3108/C3109 
and IC9001
Detailed check 
CN3101 Pin No. 7,
11,15 signal path
NG
OK [
HIGH
]
NG
HDMI EQ [IC5009] 
Problem
NG
O
NG
Detailed SDIF path 
Check between 
IC9001 and IC9000
Check signal
O
Confirm  HDMI 
input working
OK
Detailed TMDS path
OK
NG
Detailed SDIF path 
Check between 
IC9001 and IC9000
Ch
k i
l
NG
NG
O
NG
Detailed SDIF path 
Check between 
IC9001 and IC9000
Check signal
NG
OK
Confirm  Analog RF 
input working
Check signal 
between IC9001 and 
IC9000 [R8633]
Ayu2 [IC9000] 
OK
Detailed TMDS path 
check between 
IC9001 and IC5009
Confirm other analog
NG
Check signal 
between IC9001 and
NG
Brownie [IC9001] 
OK
Confirm  Analog RF 
input working
Check signal 
between IC9001 and 
IC9000 [R8633]
Ayu2 [IC9000] 
OK
NG
Brownie [IC9001]
NG
OK
Confirm  Analog RF 
input working
Check signal 
between IC9001 and 
IC9000 [R8633]
Ayu2 [IC9000] 
OK
Brownie [IC9001] 
Problem
Input working
Ayu2 [IC9000] 
Problem
OK
between IC9001 and 
IC5009 [RB5008]
Brownie [IC9001] 
Problem
OK
[
]
Problem
Problem
Brownie [IC9001] 
Problem
Problem
[
]
Problem
115
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BA2 S Board SIDE A (AEP) (Not applicable for this model)
BA2-S Board  SIDE A (AEP) (Not applicable for this model)
J3104
CN3101
R8627
RB5008
BA2-S AEP > A-SIDE
116
C310
6
C310
9
C310
8
C310
7
C312
0
C312
1
C312
2
C312
3
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