Sony GN1G - Page 40

3-2-4. NO Power (DC/DC converter check)
40
TROUBLE SHOOTING
KDL-50W800C, 805C, 807C, 809C/KDL-55W800C, 805C
d) 1.0V DDCON check
Check EN signal
R9263 voltage
Is voltage >2.5V?
Check Vcc
C9169 voltage
Is voltage >5.0V?
Refer No Power U-Com Failure
Change IC9020
Change F9012
No
Yes
No
No
Yes
END
START
Yes
Yes
Check input
F9012 voltage
Is voltage >19.0V?
LD-Board model G* Board model
Check input
F9012 voltage
Is voltage >12.0V?
Yes
Yes
No
No
Check fuse
F9012
Is fuse OK?
G* Board/LD-Board
Size B* Board G* Board H* Board
50” BMX Not applicable
HSC3
55” BMX Not applicable
HSC3