Sharp Aquos LC-45GD1E, Service Manual

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59
TU-45GD1E
LC-45GD1E
No picture (6)
Is the CVBS signal output from Pin (24) of P8903? No digital broadcasting video output to the Monitor/Record output terminal. <On input of the digital tuner>
NO
Is the DTV
-CVBS signal input to Pin (4) of
IC3800 (SELECT
OR)?
Check the MA-Connector (P3802)(P7201) and the connection of B/B (SC2101)(P8903).
NO
Check IC8905 and peripheral circuits.
YES YES
YES
Is the digital signal including Data and CLK input to Pins (69) thru (79) of IC8905?
NO
Check IC8801 thru 8802, IC8804 thru 8805, IC8601 and peripheral circuits.
YES
YES
NO
Is the VM signal output to Pin (2) of IC3800 (SELECT
OR)?
Is the L1-OUT
signal input to Pin (1) of
IC3800. Or check the peripheral circuits.
NO
Is the VM signal output to Pin (19) of INPUT2=SCAR
T2 (J1
102)?
NO
Is the VM signal output to Pin (40) of INPUT3=SCAR
T3 (J1
102)?
NO
Is the VM signal output to INPUT3=COMPONENT3 (J1
101)?
Check the connection with external
A
V
unit.
Check the Q1
125 (MUTE) circuit, L2OUT
-
LINE and peripheral circuits. Check the Q1
126 (MUTE) circuit, L3OUT
-
LINE and peripheral circuits.
Check the contact, etc. of Q1
113 (BUFFER)
and COMPONENT
terminal (J1
101).
TROUBLE SHOOTING TABLE
(Continued)