Sharp LC-46SE94U Service Manual page 45

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?
Select INPUT-1 on the input select menu
screen for the right input signal.
Does the INPUT-1 C2_PLUG detection
function?
Check the line between pin(7) of input
YES
terminal(J502) and pin(58) of
IC501(AV_SW).
Are there the COMPONENT video signal inputs at pins(59)(Y)/
(60)(Pb) and (61)(Pr) of IC501(AV_SW)?
Check the line between the input termi-
nals of J502 and IC501.
J502 pin(6)(Y) pin(5)(Pb) pin(4)(Pr)
IC501 pin(59)
YES
Are there the COMPONENT video signal outputs at pins(30)(Y)/(28)(Pb) and (27)(Pr) of IC501?
Are there the COMPONENT video signal outputs at pins(59),(57) and
(55) of connector(SC501) on the TERMINAL unit?
Are there the COMPONENT video signal inputs at pins(59),(57) and (55)
of connector(SC2203) on the MAIN unit?
Are there the COMPONENT video signal inputs at pins(AM21)(Y)/
(AN21)(Pb) and (AL21)(Pr) 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.
No video (2)
NO
NO
pin(60) pin(61)
YES
YES
YES
YES
YES
COMPONENT: No external input video [INPUT-3]
Is INPUT-3 selected on the input select menu screen?
Is the INPUT-SELECT for the input signal?
Select INPUT-3 on the input select menu screen for the
right input signal.
Does the INPUT-3 C1_PLUG detection function?
Check the line between pin(7) of input terminal(J902) and
YES
pin(50) of IC501(AV_SW).
J902 pin(7)
P501 pin(15)
Are there the COMPONENT video signal inputs at pins(51)(Y)/(53)(Pb)
and (55)(Pr) of IC501(AV_SW)?
Check the line between the input terminals of J902 and
IC501.
J902 pin(6)(Y) pin(5)(Pb) pin(4)(Pr)
P901 pin(13)
YES
P501 pin(13)
IC501 pin(51)
Check IC501 and its peripheral circuits.
NO Check the line between IC501 and SC501. (Q501 thru
Q506, etc.)
NO Check the line between SC501 and SC2203 connectors.
NO Check the line between the connector of SC2203 and
IC8001. (Q2202, Q2203 and Q2206, etc.)
Check IC8001 and its peripheral circuits. (IC8151 thru
IC8154, etc.)
NO
6 – 2
LC-46SE94U/LC-46SE941U
NO
P901 pin(15)
IC501 pin(50)
NO
pin(11) pin(9)
pin(11) pin(9)
pin(53) pin(55)
NO