Sony KDL-43W6 G Series Service Manual page 34

2019/01/30 02:46:26 (GMT+09:00)
5.0 : 6x Blinking – Backlight Error
LKP1 & LKP2 Board (Troubleshooting Guide)
Check BL_ERR CN9901
pin #36 through via hole.
Voltage <3.0V
NO
Voltage >3.0V
6X Blinking
YES
harness (CN9000) is
connected properly?
YES
Check BL_VCC01 &
*BL_VCC02 (AC OFF)
Impedance to GND >1kΩ?
YES
Check F9000/9002 and
*F9001/F904 Fuse.
Impedance <1Ω?
YES
Change panel,
AC ON 6x blinking?
YES
Change Main board,
AC ON 6x blinking
YES
Suspect other part broken
Check if LED NO
NO
NO
NO
NO
END
NO
Connect/Change LED
harness,
LED harness loose
?
AC ON 6x Blinking
YES
NO
Change LKP board,
LKP board broken
AC ON 6x blinking/
YES
NO
Change F9000/F9002
or *F9001/F904 Fuse.
AC ON 6x blinking?
YES
Panel module broken
Main Board broken
Fuse broken
* For LKP2 board only
34
SYS SET