Read Sharp XV-Z21000 (serv.man3) Service Manual online
XV-Z20000/XV-Z21000/DT-5000
5 – 5
Check the PC PWB unit.
Can the menu display be
brought up?
brought up?
YES
Check the RGB input.
Check the basic flow of the signals.
Since the component and VIDEO signals follow the
same path to the output as the formatter unit uses,
after CVIC (IC6001), the check that would otherwise
be performed after the CVIC does not need to be per-
formed. (480i and 576i are excluded.)
Since the component and VIDEO signals follow the
same path to the output as the formatter unit uses,
after CVIC (IC6001), the check that would otherwise
be performed after the CVIC does not need to be per-
formed. (480i and 576i are excluded.)
NO
Check OSD.
Check the input at the compo-
nents.
nents.
The signal passes through the same circuit as the
RGB input. Mainly, check the SOG (Sync On Green)
circuit and the color adjustment circuit. (480i and 576i
are excluded.)
RGB input. Mainly, check the SOG (Sync On Green)
circuit and the color adjustment circuit. (480i and 576i
are excluded.)
Check the VIDEO input.
Since the VIDEO input enters CVIC through a different
route than the RGB input, check the VIDEO IC.
(480i and 576i are excluded.)
route than the RGB input, check the VIDEO IC.
(480i and 576i are excluded.)
Check the 480iRGB (or com-
ponent) input.
ponent) input.
The video signal and the color signal pass through the
same circuits as the RGB input. However, since the
synchronization signal uses the VIDEO IC,
check the synchronization signal path.
same circuits as the RGB input. However, since the
synchronization signal uses the VIDEO IC,
check the synchronization signal path.
Check the DVI analog input.
Check the DVI digital/HDMI
input.
input.
The signal is reproduced in an IC specially designed
for use with the TMDS, and it enters the CVIC.
for use with the TMDS, and it enters the CVIC.
END
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