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4.3.
Failure Assessment Flowchart
9
Check the INPUT and SAVE signal
frequencies in the SYNC SET
screen.
4
Are the frequencies
essentially the same?
Signal frequencies may have
changed. Use an oscilloscope, etc.
to measure the actual frequencies.
Press the CLEAR key twice and
perform a SYNC SET.
YES Is the frequency displayed by the
projector the same as that
measured by the oscilloscope?
Did the message go off?
NO
NO
The signal has changed.
Check the system
including the signal
source. You may have to
do a SET UP depending
on the situation.
YES
Detailed Failure Assessment Methods （（（（
Detailed Troubleshooting））））
NO
YES
Replace the main board.
Problem resolved?
NO
YES
B
END
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