Sharp LC-22DC30M User Manual

LC-22DC30M
6 – 2
With [RF] signal input No video onscreen (1)
No video in the UHF/VHF reception
Is there IF output from the tuner pin(10) of TU1101 as specified? NO Check TU1101 and its peripheral circuits.
YES
Is there VIF input at pin 74 & 75 of IC3301? NO Check the circuit between TU1101 & IC3301.
YES
Are there the signal outputs of IC3301? NO Check IC3301 and its peripheral circuit.
YES
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <Video> signal input No video onscreen (2)
No external input video onscreen <INPUT 2>
Is INPUT 2 selected on the input select menu screen? NO Select INPUT 2 on the input select menu screen to pick up the
right input signal.
YES
Is there the video signal input at pin (43) of IC3301? NO Check the line between pin (9) of J502 and pin (43) of IC3301.
YES
Are there signal outputs of IC3301? NO Check IC3301 and its peripheral circuits.
YES
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.

Sharp LC-22DC30M Specifications

General

Brand	Sharp
Model	LC-22DC30M
Category	LCD TV
Language	English