Sony GN1G Service Manual page 42

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