Sharp LC32SB27U - LC - 32" LCD TV Service Manual page 52

LC-32D47U/LC-32SB27U/LC-C3237U
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 C1_PLUG detection function?
Check the line between pin (2) of input terminal (J503)
and pin (J2) of IC8001 (CPU).
YES
Are there the COMPONENT video signal inputs at pins (B13/B15)
(Y)/(A10) (Pb) and (A7) (Pr) of IC8001 (CPU)?
Check the line between the input terminals of J503
and IC8001.
J503 pin (3) (Y) pin (5) (Pb) pin (7) (Pr)
1
IC8001 pin (B13/B15) pin (A10) pin (A7)
2
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of
IC8001?
LV0OUT0P/M (N19/N20), LV0OUT1P/M (N21/N22),
LV0OUT2P/M (P19/P20), LV0OUT3P/M (R19/R20),
LV0CK0P/M (P21/P22)
YES
Check the panel module.
S-VIDEO: No external input video [INPUT-2]
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 (J506)
and pin (AB11) of IC8001 (CPU).
YES
Are there the S-VIDEO signal inputs at pins (A12) (Y) and (B9)
(C) of IC8001 (CPU)?
Check the line between pins (3) (Y)/(4) (C) of J506
and pins (A12)/(B9) of IC8001. (Q507 and Q508, etc.)
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd
channel of IC8001?
LV0OUT0P/M (N19/N20), LV0OUT1P/M (N21/N22),
LV0OUT2P/M (P19/P20), LV0OUT3P/M (R19/R20),
LV0CK0P/M (P21/P22)
YES
Check the panel module.
No video (2)
NO
NO
No video (3)
NO
NO
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 (J504) and pin
(K2) of IC8001 (CPU).
YES
Are there the COMPONENT video signal inputs at pins (A13/A15) (Y)/
(B10) (Pb) and (B7) (Pr) of IC8001 (CPU)?
Check the line between the input terminals of J504 and IC8001.
J504 pin (3) (Y) pin (5) (Pb) pin (7) (Pr)
1
IC8001 pin (A13/A15) pin (A10) pin (A7)
2
YES
NO Check IC8001 and its peripheral circuits.
(IC8251, etc.)
NO Check IC8001 and its peripheral circuits. (IC8251, etc.)
6 – 2
NO
NO