Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ▷ View online
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference
BA2-S Board SIDE B (AEP) ) (Not applicable for this model)
BA2 S Board SIDE B (AEP) ) (Not applicable for this model)
C8017
C8017
C7020
BA2-S AEP > B-SIDE
R3118
117
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference
BKE Board SIDE A (not applicable for this model)
BKE > A-SIDE
(
pp
)
C3106
C3109
C3108
C3107
C3120
C3109
C3108
C3107
C3120
C3120
C3121
C3122
C3123
C3121
C3122
C3123
RB5008
C8017
CN3101
R8627
118
J3104
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference
BKE Board- SIDE A (not applicable for this model)
BKX Board- SIDE B (not applicable for this model)
(
pp
)
BKE > A-SIDE
BKX > B-SIDE
119
R3118
C7010
RB1G
CHASSIS
W850A
Troubleshooting
3-5. No Picture
3-5-2. No Picture HOTEL_B2B (BA2-S HOTEL_B2B)
No Picture B2B
PC
No Picture
No Picture B2B
Check if input OSD
is GREY OUT
No Picture
NG
Check CN3102
Connection,
PC_CON_DET
OK
Check wave between
R3149/R3150
and IC9001
Detailed check
CN3102 pin13,
pin 14 path
NG
OK
Detailed check
CN3102 signal path
Pin 1, pin 2, pin 3
NG
OK
Check wave between
C3126/C3127/C3128
and IC9001
OK
Detailed TMDS path
NG
Detailed TMDS path
check between
IC9001 and IC5009
Confirm other analog
NG
Check signal
between IC9001 and
NG
HDMI EQ [IC5009]
Problem
NG
Confirm HDMI
input working
Input working
Ayu2 [IC9000]
Problem
OK
between IC9001 and
IC5009 [RB5008]
Brownie [IC9001]
Problem
OK
Note:
(AYU2) – IC9000
(Brownie) IC9001
(AYU2) – IC9000
(Brownie) IC9001
(*)
Size
B* Board Type G* Board Type
42”
BA2-S GL2S
120
(Brownie)- IC9001
47”
BA2-S
GL2S
55”
BA2-S
GL2E
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