Sharp LC-32M400M-BK Service Manual page 28

LC-32M400M-BK/WH/RD
With [RF] signal input
No video in the UHF/VHF reception
Is there IF output from the tuner pin(10) of TU1101 as specified?
Is there VIF input at pin 56 & 57 of IC3301?
Are there the signal outputs of IC3301?
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <Video> signal input
No external input video onscreen <INPUT 4>
Is INPUT 4 selected on the input select menu screen?
Is there the video signal input at pin (35) of IC3301?
Are there signal outputs of IC3301?
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
No video onscreen (1)
YES
YES
YES
No video onscreen (2)
YES
YES
YES
NO Check TU1101 and its peripheral circuits.
NO Check the circuit between TU1101 & IC3301.
NO Check IC3301 and its peripheral circuit.
NO Select INPUT 4 on the input select menu screen to pick up the
right input signal.
NO Check the line between pin (4) of SC5201 and pin (35) of IC3301.
NO Check IC3301 and its peripheral circuits.
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