Sony BRAVIA KDL-55W900A, Service Manual

Page: 124 / 241

RB1G
CHASSIS
W900A/904A/905A
Troubleshooting
3-5. No Picture
3-5-2. No Picture HOTEL_B2B (BA2-S HOTEL_B2B)
No Picture B2B
PC
No Picture
Check if input OSD
is GREY OUT
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
Check wave between
C3126/C3127/C3128
and IC9001
OK
Detailed TMDS path
NG
p
check between
IC9001 and IC5009
Confirm other analog
NG
Check signal
between IC9001 and
NG
HDMI EQ [IC5009]
Problem
NG
Confirm HDMI
input working
Si B* B d T G* B d
Input working
Ayu2 [IC9000]
Problem
OK
IC5009 [RB5008]
Brownie [IC9001]
Problem
OK
Note:
Size B* Board Type G* Board
Type
OTHERS JP
40” BA2-S BA2-W G1A
46” BA2 S BA2 W G1A
124
Note:
(AYU2) – IC9000
(Brownie)- IC9001
46” BA2-S BA2-W G1A
55” BA2-S BA2-W G1B