No Power: Dc_Off_Det Check; No Power: Ddcons Check - Sony XBR-43X830C Service Manual

3-2-3. NO POWER: DC_OFF_DET check

START
Check Vdd
No
C9118
Is voltage >5V?
Yes
END
XBR-43X830C, 49X830C, 835C, 837C
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 to No Power U-Com Failure)
No Power U-Com Failure
89