Sharp XG-P25X Service Anleitung Seite 55

TROUBLE SHOOTING TABLE FOR PC I/F UNIT
Checking the DVI digital input
Feed the DVI digital signal to the
INPUT3 terminal.
Select INPUT3 for input terminal.
Does the image appear?
Is the image free from distortion?
Are the colors as specified?
The DVI digital input is okay.
Measure the vertical sync signal at
the land of C8463 and the
horizontal sync signal at the land
of C8484. (The capacitors are
located on the back of the PWB.)
Are the sync signals as specified?
Measure the clock signal at
R8685 (located on the back of
the PWB).
Is the clock signal as specified?
Is the signal at the R4
terminal at low level?
IC8298 or its peripheral
parts defective.
Note: To ensure the Plug&Play system, first connect
the cable to the INPUT3 terminal and then turn on
the computer (signal generator) power.
NO
YES
NO
YES
NO
YES
IC8298 or its peripheral
parts defective.
NO
YES
NO
YES
NO
YES
IC8299 or its peripheral parts
defective.
55
XG-P25X
(Continued)