Sharp LC-60LE740E Service Manual page 163

LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
Does not the picture of the COMPONENT signal input to EXT3 go out?
Do COMPONENT signals input to pins [13/COMP1_Y, 10/
COMP1_Pr, 11/COMP1_Pb] of EXT3 (J511)?
Do COMPONENT signals input to pins [AM16/COMP_Y1P),
(AJ18/COMP_PR1P) and (AK17/COMP_PB1P] of IC3303 (Digi-
tal AV decode & Main CPU)?
Refer to "No picture on the display (1)".
Does not the picture of the ANALOG-RGB signal input to PC_IN (15pin-D-SUB terminal) go out?
Do ANALOG-RGB and synchronized signal input to pin [(1, 2, 3)/
(PC_RED, GREEN, BLUE), (14 and 13)/(PC_VSYNC, H.Sync)]
of PC_IN (SC501)?
Do ANALOG-RGB and synchronized signal input to pins [AM15/
PC_RP, AK15/PC_GP, AK13/PC_BP, and AL13/PC_HSYNC,
AM13/PC_VSYNC] of IC3303 (Digital AV decode & Main CPU)?
Refer to "No picture on the display (1)".
[External input EXT3] No picture on the display (9)
YES
YES
[External input PC] No picture on the display (10)
YES
YES
NO Check the setting of an external input device that connects with
EXT3.
NO Check the line between J511 and IC3303.
NO Check the connection and setup with the external PC_IN
devices.
NO Check the line between SC501 and IC3303.
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