Sony XBR-65Z9D Service Manual page 24

FLOW
1-3. NO POWER DDCON/LDO
START
Check fuse
no
F4xx / F40xx/F6xx
Is fuse OK?
yes
Check Vcc voltage
no
C4xx / C40xx/C6xx
Is voltage >12.0V?
yes
Check Enable pin
no
voltage
Is voltage >2.5V?
yes
Change DDCON IC
XBR-65Z9D
Change Fuse
Check POWER_ON P-on ucom #pin19
(Refer 1-2 No Power U-Com Failure)
1-2 No Power U-Com Failure
or
Enable source
TROUBLE SHOOTING
24