Sharp LC-37D64U Service Manual page 46

LC-32/37D64U
S-VIDEO: No external input video
Is INPUT-2 selected on the input select menu screen?
Does the INPUT-2 S1_PLUG detection function?
Check the line between pin(6) of input terminal(J504) and
pin(41) of IC501(AV_SW).
YES
Are there the S-VIDEO signal inputs at pins(42)(Y) and (44)(C) of
IC501(AV_SW)?
Check the line between pins(3)(Y)/(4)(C) of J504 and
pins(42)/(44) of IC501.
YES
Are there the S-VIDEO signal outputs at pins(77)(Y) and (75)(C) of con-
nector(SC501) on the TERMINAL unit?
Are there the S-VIDEO signal inputs at pins(77)(Y) and (75)(C) of connec-
tor(SC2203) on the MAIN unit?
Are there the S-VIDEO signal inputs at pins(AL17)(Y) and (AL16)(C) of
IC8001(CPU)?
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of
IC8001?
LVDS_TX_0_DATA0_P/N(C7/B7), LVDS_TX_0_DATA1_P/N(E7/D7),
LVDS_TX_0_DATA2_P/N(C6/B6), LVDS_TX_0_DATA3_P/N(C5/B5),
LVDS_TX_0_DATA4_P/N(E5/D5), LVDS_TX_0_CLK_P/N(E6/D6),
LVDS_TX_1_DATA0_P/N(B4/A4), LVDS_TX_1_DATA1_P/N(E4/D4),
LVDS_TX_1_DATA2_P/N(B3/A3), LVDS_TX_1_DATA3_P/N(B1/B2),
LVDS_TX_1_DATA4_P/N(F5/F6), LVDS_TX_1_CLK_P/N(C2/C3),
Check the panel module.
[INPUT-2]
NO
NO
YES
YES
YES
YES
No video (3)
NO Check the line between IC501 and SC501.(Q501 thru
Q504, etc.)
NO Check the line between SC501 and SC2203 connectors.
NO Check the line between SC2203 and IC8001.(Q2201 and
Q2205, etc.)
Check IC8001 and its peripheral circuits.(IC8151 thru
IC8154, etc.)
NO
6 – 3