Vizio P42HDTV10A Service Manual page 110

TROUBLE OF DDC READING
CONFIDENTIAL – DO NOT COPY
Start
Analog DDC
Ye
HDMIDDC
Ye
END
N0 Support DDC1/2B
1.Analog cable ok?
2.Check signal (U18 to P3)
3.Check U18 Voltage
4.Is compliant protocol?
N0 Support DDC1/2B
1.Analog cable ok?
2.Check signal (U17 to P1)
3.Check U17 Voltage
4.Is compliant protocol?
Page 10-6
File No. SG-0184