Sony A1E Series Service Manual page 27

FLOW
2-5. LED BLINKING 6X (BACKLIGHT ERROR)
6-times blinking
Check Voltage of
"G_ERR"
at R403 on DKA board
Low
XBR-55/65A1E
High
Check
harness/connection
G* board to DKA/TCON
Harness /
Connection OK
Harness /
Connection
broken
Replace
harness
No
improvement
Replace
G* board
No
improvement
Replace
DKA board
No
Improvement
Replace
BKA board
No
Improvement
Replace
Panel
TROUBLE SHOOTING
Symptom
Improvement
Harness
Symptom
Improvement
G* board
Symptom
Improvement
DKA board
Symptom
Improvement
BKA board
Symptom
Improvement
Panel(TCON)
27