Sharp LC-32LE700UN Service Manual page 55

COMPONENT: No external input video [INPUT-1]
Is INPUT-1 selected on the input select menu screen?
Is the INPUT-SELECT for the input signal?
NO
Select INPUT-1 on the input select menu screen for
the right input signal.
Does the INPUT-1 C1_PLUG detection function?
Check the line between pin (2) of input terminal (J508)
and pin (AF7) of IC8001 (CPU).
YES
Are there the COMPONENT video signal inputs at pins (AJ21) (Y)/
(AJ22) (Pb) and (AH22) (Pr) of IC8001 (CPU)?
NO
Check the line between the input terminals of J508
and IC8001.
J508 pin (3) (Y) pin (5) (Pb) pin (7) (Pr)
IC8001 pin (AJ21) pin (AJ22) pin (AH22)
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of
IC8001?
LVDS_TX_0_DATA0_P/N (C14/D14), LVDS_TX_0_DATA1_P/N (C15/D15),
LVDS_TX_0_DATA2_P/N (C16/D16), LVDS_TX_0_DATA3_P/N (C18/D18),
LVDS_TX_0_DATA4_P/N (C19/D19), LVDS_TX_0_CLK_P/N (C17/D17),
LVDS_TX_1_DATA0_P/N (A14/B14), LVDS_TX_1_DATA1_P/N (A15/B15),
LVDS_TX_1_DATA2_P/N (A16/B16), LVDS_TX_1_DATA3_P/N (A18/B18),
LVDS_TX_1_DATA4_P/N (A19/B19), LVDS_TX_1_CLK_P/N (A17/B17).
YES
Check the panel module.
No video (2)
COMPONENT: No external input video [INPUT-2]
Is INPUT-2 selected on the input select menu screen?
Is the INPUT-SELECT for the input signal?
Select INPUT-2 on the input select menu screen for
the right input signal.
Does the INPUT-2 C2_PLUG detection function?
Check the line between pin (2) of input terminal
(J502) and pin (AH2) of IC8001 (CPU).
YES
Are there the COMPONENT video signal inputs at pins (AJ18) (Y)/(AJ19)
(Pb) and (AH19) (Pr) of IC8001 (CPU)?
Check the line between the input terminals of J502
and IC8001.
J508 pin (3) (Y) pin (5) (Pb) pin (7) (Pr)
IC8001 pin (AJ18) pin (AJ19) pin (AH19)
YES
NO Check IC8001 and its peripheral circuits.
(IC8152/IC8153, etc.)
6 – 2
LC-32/40/46/52LE700UN
NO
NO