Sony KD-55X8 G Series Service Manual page 21

1.1 LD2 Troubleshooting Flow
12V check
DDCON
START
(AC ON)
Check fuse
F1006/F1004
no
& F1007/F1000
Is fuse OK?
yes
Check Vin
F1006/F1004
no
& F1007/F1000
Is voltage > 18V?
yes
Check EN signal
R3005 voltage
no
Is voltage >2.5V?
yes
Check Vcc
C1034 voltage
no
Is voltage >5.0V?
yes
Change F1006/F1004
& F1007/F1000
Change adaptor
Check troubleshoot flow 1.2
Power u-com failure
Change IC1000
12.5V_TCON check
Check 12.5V_TCON
Is voltage < 11.0V?
no
yes
Check TCON_ON
C1024
no
Is voltage > 3.0V?
yes
END
OK
Change BSL
board
21