Vizio L32 Service Manual page 15

(TV, COMPOSITE VIDEO1, 2, 3, S-VIDEO) IS NOT DISPLAY CORRECTLY
Input signal good?
U20 input correct?
U20 output correct?
LVDS output correct?
1
.Chcak J6 Connect is good?
2.Is panel working ok?
CONFIDENTIAL – DO NOT COPY
Start
Yes
Yes
Yes
Yes
END
N0
1.Check video
2.Check DVD player
N0
1.Check P2 signal
2.Check signal between P2 and
U20 (IF AV1/AV2 mode)
3.Check Tuner &U20 (IF TV mode)
4.Check J4&J6 (IF AV3&S-Video)
5.Check U20 POWER +9V
6.Check U22 data input/output
N0
1.Check signal between U20 and
U9
N0
1.Check signal between U20 and
U9
2.Check U9 clock (27MHz)
3.Check U9 power
Page 9-2
File No. SG-0168