Sony BRAVIA KDL-55W900A, Service Manual, Page: 82 / 241

RB1G
CHASSIS
W900A/904A/905A
Troubleshooting
3-3-3. Main Board Power Off Checking (for Main SP Lch & Rch)
No Checking Item OK NG
5 Check connectivity audio output path (only for BA2
and BM board):
L4601 (near to IC side) – CN4601 Pin1
L4602 (near to IC side) – CN4601 Pin2
L4603 (
t IC id ) CN4601 Pi 3
Must have good connection
(~0
Ω
)
Open circuit.
L4603 (near to IC side) – CN4601 Pin3
L4604 (near to IC side) – CN4601 Pin4
6 Check connectivity audio output path
(only for BKE and BKX board): Must have good connection
(~0
Ω
)
Open circuit.
( y )
L4601 (near to IC side) – CN4601 Pin4
L4602 (near to IC side) – CN4601 Pin3
L4603 (near to IC side) – CN4601 Pin2
L4604 (near to IC side) – CN4601 Pin1
( )
Size B* Board Type G* Board
Type
OTHERS JP
40” BA2-S BA2-W G1A
82
46” BA2-S BA2-W G1A
55” BA2-S BA2-W G1B