Read Sharp LC-60LE925E (serv.man18) Service Manual online
LC-46/60LE925E (1st Edition)
7 – 11
[External input EXT3] No picture on the display (9)
Does not the picture of the component video signal input to EXT3 (15pin-D-SUB terminal) go out?
Is it selected “Component” by the Audio setup under Menu-
Setup-Option-Input terminal setting - Input select?
NO
Set the “Component”.
YES
Is a COMPONENT video signal input to pins (1)/PC_R_COM,
(2)/PC_G_COM, (3)/PC_B_COM of EXT3 (SC501)?
(2)/PC_G_COM, (3)/PC_B_COM of EXT3 (SC501)?
NO
Check the setting of an external input device that connects with
EXT3.
EXT3.
YES
Is COMPONENT signal sent to pins (AJ17/PC_R_CM), (AJ16/
PC_G_CM) and (AJ15/PC_B_CM) of IC3302?
PC_G_CM) and (AJ15/PC_B_CM) of IC3302?
NO
Check the line between SC501 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.”
[External input EXT3] No picture on the display (10)
Does not the picture of the DVI (ANALOG) video signal input to EXT3 (15pin-D-SUB terminal) go out?
Is it selected “PC (RGB)” by the Audio setup under Menu-Setup-
Option-Input terminal setting - Input select?
NO
Set the “PC (RGB)”.
YES
Are the video signal and the synchronized signal input from pin
(1, 2, 3)/(PC_R, G, B), (14 and 13)/(V, H.Sync) of EXT4 (SC501)?
(1, 2, 3)/(PC_R, G, B), (14 and 13)/(V, H.Sync) of EXT4 (SC501)?
NO
Check the connection and setup with the external DVI devices.
YES
Are the video signal and the synchronized signal input from pins
(AK17/PC_R) (AK16/PC_G) (AH15/PC_B) and (AK14/
PC_HSYNC) (AJ14/PC_VSYNC) of IC3302 (Digital AV decode &
Main CPU)?
(AK17/PC_R) (AK16/PC_G) (AH15/PC_B) and (AK14/
PC_HSYNC) (AJ14/PC_VSYNC) of IC3302 (Digital AV decode &
Main CPU)?
NO
Check the line between SC501 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.”
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