LC-40/46/52/60LE820UN
7 – 2
No video (2)
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?
YES
NO
Select INPUT-1 on the input select menu screen for
the right input signal.
Does the COMP1_PLUG detection function?
Check the line between pin (4) of input terminal (J506)
and pin (D30) of IC3302 (CPU).
Are there the COMPONENT video signal inputs at pins (AJ21) (Y)/
(AJ22) (Pb) and (AH22) (Pr) of IC3302 (CPU)?
YES
NO
Check the line between the input terminals of J506
and IC3302.
J506 pin (5) (Y) pin (6) (Pb) pin (7) (Pr)
IC3302 pin (AJ21) pin (AJ22) pin (AH22)
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of
IC3302?
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).
NO
Check IC3302 and its peripheral circuits.
(IC3501/IC3502, etc.)
YES
Check the panel module.
