Read Sharp XG-P25XE (serv.man12) Service Manual online
XG-P25X
55
TROUBLE SHOOTING TABLE FOR PC I/F UNIT
(Continued)
Feed the DVI digital signal to the
INPUT3 terminal.
INPUT3 terminal.
Note: To ensure the Plug&Play system, first connect
the cable to the INPUT3 terminal and then turn on
the computer (signal generator) power.
the cable to the INPUT3 terminal and then turn on
the computer (signal generator) power.
Select INPUT3 for input terminal.
Checking the DVI digital input
Does the image appear?
Is the image free from distortion?
Are the colors as specified?
The DVI digital input is okay.
IC8298 or its peripheral
parts defective.
parts defective.
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.)
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).
R8685 (located on the back of
the PWB).
Is the clock signal as specified?
IC8299 or its peripheral parts
defective.
defective.
Is the signal at the R4
terminal at low level?
terminal at low level?
IC8298 or its peripheral
parts defective.
parts defective.
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
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