Sony KD-49X7 D Series Service Manual page 17

1 No Power
BM2/DPA Board Model
with G* board
No Power
Check STBY 3.3V
NG
C497
near CN401
on DPA board
OK
Check STBY 3.3V
NG
C402
near CN400
on BM2 board
OK
BM2 Board
Replace
NG
Between G* Board to
DPA Board Harness
OK
Harness
Replace
NG
R407, R408
Between DPA Board to
on DPA Board
BM2 Board Harness
OK
Harness
u-Com Failure
DDCON/LDO
Main Device Failure
with AC-ADP
No Power
Check 24V
C485
G* Board
near CN401
on DPA board
OK
Check STBY 3.3V
C402
near CN400
on BM2 board
OK
BM2 Board
Replace
NG
NG
Between LD Board to
DPA Board Harness
OK
Harness
Replace
NG
NG
Between DPA Board to
BM2 Board Harness
OK
Harness
u-Com Failure
DDCON/LDO
Main Device Failure
LD Board
or
AC Adaptor
IC408
on DPA Board
17