Sony KD-43X8301C Service Manual page 102

3-3-8. 6 Times Blinking (Backlight Error)
6-times blinking
Check a voltage of
BL_ERR_DET.
Check point is
JL9007
or
23pin of CN9000
on B*Board
Voltage < 1.8 V
KD-43/49X8301C (FW-43/49X8370C), 8305C, 8307C, 8308C, 8309C
Check
harness/connection
Voltage ≥ 1.9 V
G*board to B*Board
or
LD board to B*Board
Connection OK
Harness /
Connection
broken Change
harness
Harness /
LED driver or G* board
 Change LD board or G* board.
No improvement
Change
No Improvement
Change
B* board
Symptom
Improvement
No improvement
Symptom
Improvement
Symptom
Improvement
Panel
Symptom
Improvement
TROUBLE SHOOTING
Harness
LD board/G board
Panel
B* Board
102