Trouble Shooting - Sharp LC-55LE643U_FPTW Service Manual

Lcd tv 55"
Table of Contents

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Chapter 9
(TV, COMPOSITE, VIDEO) IS NOT DISPLAY CORRECTLY
Start
Input signal good?
U1 input correct?
U1 output correct?
LVDS output correct?
1. Check JL2 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 U1
(IF IN AV mode)
1. Check power system U1 :
+3V3SB, +1.2V,
+1.8V_DDR2
2. Check Y100's frequence is
OK?
1. Check mini-LVDS cable
2. Check U1 clock (24MHz)
3. Check LVDS signal
Page 9-1
File No. SG-0000242

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