Sony KD-55XD9305 Service Manual page 21

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FLOW
1-1. NO POWER
with G* board
No Power
Check STBY 3.3V
NG
C484
near CN401
on DPS board
OK
Check STBY 3.3V
NG
C9006
near CN9000
on BM1 board
OK
B* Board
KD-55/65XD9305
Replace
NG
Between G* Board to
G* Board
DPS Board Harness
OK
Harness
Replace
DPS Board /
NG
Between DPS Board to
R407, R408
BM1 Board Harness
on DPS Board
OK
Harness
u-Com Failure
DDCON/LDO
Main Device Failure
with AC-ADP
No Power
Check 24V
NG
C485
near CN401
on DPS board
OK
Check STBY 3.3V
NG
C9006
Between DPS Board to
near CN9000
on BM1 board
OK
B* Board
TROUBLE SHOOTING
Replace
NG
LD Board
Between LD Board to
DPS Board Harness
AC Adaptor
OK
Harness
Replace
DPS Board /
NG
BM1 Board Harness
on DPS Board
OK
Harness
u-Com Failure
DDCON/LDO
Main Device Failure
or
IC408
21

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