Sharp LC-32LE260M Service Manual page 9

LC-32LE260M
With <Component> signal input
No external input video onscreen <INPUT 2>
Is INPUT 2 selected on the input select menu screen?
Are there the Y, Pb and Pr signal inputs at pins (22), (24) and
(26) of IC 3301 respectively?
Is input waveform of IC3301 normal?
Y=(24)pin , Pb=(22) pin, Pr=(26) pin
Are the LVDS signal output from IC3301 at pin 61-64
and pin 66-71 ?
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <HDMI> signal input
No external input video onscreen <INPUT 1>.
Is INPUT 1 selected on the menu screen?
Are there signal outputs from SC1501 to IC3301?
Are there LVDS signal outputs of IC3301 at pin 61-64 and pin
66-71
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
No video onscreen (2)
YES
YES
YES
YES
No video onscreen (4)
YES
YES
YES
NO Select INPUT 2 on the input select menu screen to pick up the
right input signal.
NO Check the line between pins (10)/(11)/(12) of TL504 ,TL505,
TL506 and pin (22),(24),(26)
Check the line between pins (10)/(11)/(12) of TL504 ,TL505,
NO
TL506 and pin (22),(24),(26)
NO
Check IC3301 and its peripheral circuits.
NO Select INPUT 1 on the input select menu screen to pick up the
right signal input.
NO Check peripheral circuits between SC1501 and IC3301.
NO Check IC3301 and its peripheral circuits.
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