Sony KDL-22EX420 Service Manual page 26

Trouble Shooting
3-2-7. 6-times blinking( Backlight Error)
6-times blinking
Check the harness between
the T-con board and
the LED driver board.
OK
Change G* board
NG
Check FFC connection between
the LED driver board and
the light source
(inside the panel module)
OK
(Not applicable for this manual)
NG
Harness
Symptom
improvement
G* Board
NG
FFC Connection
KDL- 22 EX423, 26 EX423, 32 EX420, 32, 40, 46 EX523
Change LED driver
board
NG
Change B*
board
Light Source
(Inside Panel Module)
25
KDL- 22, 26 EX420, 32,40,46 EX520
RM-GD020, CD013
Symptom
improvement
LED Driver Board
Symptom
improvement
B* Board
RM-GD020