Dvi Circuit - LG LSS-3200A Service Manual

4. DVI CIRCUIT

* : Please check that receiver supports this format.
START
YES
DVI cable is connected?
YES
DVI ICON is activated on front panel ?
YES
480P picture is OK?
YES
720P & 1080I picture are OK?
YES
480I picture are OK?
YES
END
(A)
YES
Display Format switch on rear panel is
RGB/ DVI side ?
YES
The emitter of Q500 is high volt ?
YES
IC500(11) is high volt ?
YES
END
NO
Connect DVI cable.
NO
NO
Check IC500(57(IDCK+), 2(DE),
4(HSYNC), 5(VSYNC))
The IDCK_ clock shall be 27MHz.
Fig. 01
NO
* Check IC500(57(IDCK+), 2(DE),
4(HSYNC), 5(VSYNC))
The IDCK_ clock shall be 74.25MHz.
Fig. 02, Fig. 03 and Fig. 04
NO
* Check IC500(57(IDCK+), 2(DE),
4(HSYNC), 5(VSYNC))
The IDCK_ clock shall be 13.5MHz.
Fig. 05, Fig. 06
NO
Change the switch to RGB/ DVI side.
NO
Use other DVI cable or turn on the moni-
tor that is connected with DVI cable.
NO
Change the DVI chip.
3-19
(A)