Led Blinking 6X (Backlight Error) - Sony X900E Series Service Manual

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2-5. LED BLINKING 6X (BACKLIGHT ERROR)

6-times blinking
Check Voltage of
"BL_LD_ERR_DET"
at CL1038 on BMKS
Voltage < 1.9 V
XBR-49/55/65/75X900E
Voltage ≥ 1.9 V
Check
harness/connection
G/LD board to BMKS
Harness /
Connection OK
Harness /
Connection
broken
Replace
harness
No
improvement
LED driver or G board
Replace LD board or G board.
No
improvement
Replace
BMKS
No
Improvement
Replace
Panel
TROUBLE SHOOTING
Symptom
Improvement
Harness
Symptom
Improvement
LD board/G board
BMKS Board
Symptom
Improvement
Panel
Symptom
Improvement
G/LD Board: G board or LD board
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