Sony GN1G - Page 42

3-2-4. NO Power (DC/DC converter check)
42
TROUBLE SHOOTING
KDL-50W800C, 805C, 807C, 809C/KDL-55W800C, 805C
f) 1.8V DDCON check
Check EN signal
IC9025 #pin4
Is voltage >2.5V?
Refer No Power U-Com Failure
Change F9017
No
No
Yes
Yes
Change IC9025
START
Check fuse
F9017
Is fuse OK?
Check input
F9017 voltage
Is voltage >12.0V?
Yes
G*Board/LD-Board
No
Check EN signal
Q9001 #pin1
Is voltage >2.5V?
Refer No Power U-Com Failure
No
Yes
Change Q9002
START
g) 3.3V_MAIN check
Size B* Board G* Board H* Board
50” BMX Not applicable
HSC3
55” BMX Not applicable
HSC3