LG LST-4200A Service Manual - Page 41

DVI Part

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5. DVI Part Start YES NO Is DVI cable connected? YES Is DVI ICON set up on the front NO panel? YES NO Is 480P picture shown? YES NO Are 720P & 1080I pictures shown? YES NO Is 480I picture shown? YES END Connect DVI cable. Set up on the DVI using Display Format Key. Check IC302(57(IDCK+), 2(DE), 4(HSYNC) and 5(VSYNC). IDCK_ clock should be at 27MHz. Check IC302(57(IDCK+), 2(DE), 4(HSYNC) and 5(VSYNC). IDCK_ clock should be at 74.25MHz. IC302(57(IDCK+), 2(DE), 4(HSYNC) and 5(VSYNC)) IDCK_ clock should be at 13.5MHz. 3-32

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3-32
5. DVI Part
Is DVI cable connected?
Is DVI ICON set up on the front
panel?
Is 480P picture shown?
Are 720P & 1080I pictures shown?
Check IC302(57(IDCK+), 2(DE),
4(HSYNC) and 5(VSYNC).
IDCK_ clock should be at 74.25MHz.
<Fig.02, Fig.03 and Fig.04>
IC302(57(IDCK+), 2(DE), 4(HSYNC)
and 5(VSYNC)) IDCK_ clock should
be at
13.5MHz. <Fig.05, Fig.06>
Is 480I picture shown?
END
Start
Connect DVI cable.
Set up on the DVI using Display
Format Key.
Check IC302(57(IDCK+), 2(DE),
4(HSYNC) and 5(VSYNC).
IDCK_ clock should be at 27MHz.
<Fig.01>
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES