Sony XBR-55X900C Service Manual page 126

3-2-3. NO POWER: DC_OFF_DET check
START
Check Vdd
No
C9118
Is voltage >5V?
Yes
END
XBR-55/65X900C, 905C, 907C
Change IC9018
3-2-4. NO POWER: DDCONs check
START
Check fuse
No
F9xxx
Is fuse OK?
Yes
Check Vcc voltage
No
C9xxx
Is voltage >12.0V?
Yes
Check Enable pin
No
voltage
Is voltage >2.5V?
Yes
Change DDCON IC
TROUBLE SHOOTING
Change Fuse
Check POWER_ON P-on ucom #pin19
(Refer 1.2 No Power U-Com Failure)
1.2 No Power U-Com Failure
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