XBR-55X850D/855D/857D, 65X850D/855D/857D, 75X850D/855D/857D
35
TROUBLE SHOOTING
FLOW
2-5. LED BLINKING 6X (BACKLIGHT ERROR)
Harness /
Connection
broken
6-times blinking
Check Voltage of
BL_ERR_DET
on 21pin of CN9000
on BMFW2
Voltage ≥ 1.85 V
Symptom
Improvement
Harness
Change
harness
Change
BMFW2
BMFW2 Board
Harness /
Connection OK
No
improvement
Voltage < 1.85 V
Panel
Change
Panel
Symptom
Improvement
Symptom
Improvement
LED driver or G board
Change LD board or G board
LD board/G board
Symptom
Improvement
No
improvement
No
improvement
Check
harness/connection
G/LD* board to B*Board
Case: BMFW2 structure