Sharp Aquos LC 65D64U, Service Manual

Page: 36 / 152

LC-65D64U
6 – 2
No video (2)
COMPONENT: No external input video [INPUT-1] COMPONENT: No external input video [INPUT-3]
Is INPUT-1 selected on the input select menu screen?
Is the INPUT-SELECT for the input signal? Is INPUT-3 selected on the input select menu screen?
Is the INPUT-SELECT for the input signal?
YES
NO
YES
NO
Select INPUT-1 on the input select menu screen for the
right input signal. Select INPUT-3 on the input select menu screen for the
right input signal.
Does the INPUT-1 C2_PLUG detection function? Does the INPUT-3 C1_PLUG detection function?
Check the line between pin(7) of input terminal(J502) and
pin(58) of IC501(AV_SW). Check the line between pin(7) of input terminal(J902) and
pin(50) of IC501(AV_SW).
J902 pin(7) P901 pin(15)
P501 pin(15) IC501 pin(50)
Are there the COMPONENT video signal inputs at pins(59)(Y)/
(60)(Pb) and (61)(Pr) of IC501(AV_SW)? Are there the COMPONENT video signal inputs at pins(51)(Y)/(53)(Pb)
and (55)(Pr) of IC501(AV_SW)?
YES
NO
YES
NO
Check the line between the input terminals of J502 and
IC501.
J902 pin(6)(Y) pin(5)(Pb) pin(4)(Pr)
IC501 pin(59) pin(60) pin(61)
Check the line between the input terminals of J902 and
IC501.
J902 pin(6)(Y) pin(5)(Pb) pin(4)(Pr)
P901 pin(13) pin(11) pin(9)
P501 pin(13) pin(11) pin(9)
IC501 pin(51) pin(53) pin(55)
Are there the COMPONENT video signal outputs at pins(30)(Y)/(28)(Pb) and (27)(Pr) of IC501?
YES
NO
Check IC501 and its peripheral circuits.
Are there the COMPONENT video signal outputs at pins(59),(57) and
(55) of connector(SC501) on the TERMINAL unit? NO Check the line between IC501 and SC501 (Q501 thru
Q506, etc.).
YES
Are there the COMPONENT video signal inputs at pins(59),(57) and
(55) of connector(SC2203) on the MAIN unit? NO Check the line between SC501 and SC2203 connectors.
YES
Is there the COMPONENT video signal input at pin(16) of IC3201(SYNC)?
NO
Check the line between SC2203 and IC3201 (Q2209, etc.).
[Format: 480i]
Are there the COMPONENT video signal inputs at pins(AM21)(Y)/
(AN21)(Pb) and (AL21)(Pr) of IC8001(CPU)? [Format: 480p/720p/1080i/1080p]
Are there the COMPONENT video signal inputs at pins(10)(Y)/(4)(Pb)
and (16)(Pr) of IC3301(ADC)?