Sony BRAVIA KDL-55W900A, Service Manual

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RB1G
CHASSIS
W900A/904A/905A
Troubleshooting
3-5. No Picture
3-5-3. No Picture UC/GA/CH (BA2-S UC/GA/CH, BKX)
Size B* Board Type G* Board
Type
OTHERS JP
40” BA2 S BA2 W G1A
No Picture GA
Video 1 Video 2 Component
Note:
40” BA2-S BA2-W G1A
46” BA2-S BA2-W G1A
55” BA2-S BA2-W G1B
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
Note:
(AYU2) – IC9000
(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
127
Problem
Problem