Trouble Shooting - Sharp LC-65LE645U Service Manual

Chapter 9
(TV, COMPOSITE , VIDEO ) IS NOT DISPLAY CORRECTLY
Start
Input signal good?
U401 input correct?
U401 output correct?
LVDS output correct?
1. Check JM4, JM5 Connect is good?
2. Is panel working ok?
END
CONFIDENTIAL – DO NOT COPY

Trouble shooting

N0
Yes
N0
Yes
N0
Yes
N0
Yes
1. Check video
2. Check DVD player
1. Check VIDEO signal
2. Check signal between U401
(IF IN AV mode)
1. Check power system U401 :
+3V3SB, +3.3V, +1.15V, +1.5V_DDR2
2. Check Y1's frequency is OK?
1. Check mini-LVDS cable
2. Check U401 clock (27MHz)
3. Check LVDS signal
Page 9-1
File No. SG-0000305