Xerox 785 - Manual (Page 262)

Troubleshooting
16-2 WorkCentre Pro 665/685/765/785
Key test - Press then . You will be asked to press all
the keys on the control panel and then press the Stop key at the
end of the test. You will receive an OK prompt if the test is
successful.
LED test - Press then . This test will turn on all the
control panel LEDs.
LCD test - Press then . When you run this test please
check that all the sections in the LCD are turned ON and then
turned OFF. You will be prompted to confirm that the test was
successfully completed.
Speaker test - Press then . You will be prompted to
select the various speaker volumes available and confirm that the
test was successful.
Switch test - Press then . During this test you will be
prompted to open and close the scanner cover, open and close
the machine top cover, pull out and push in the paper tray,
remove and replace the process unit, load the bypass tray with
paper and use the flip door.
Test print - Press then . When selected the machine
will print out a test document which can be checked for print
quality. This test uses the main paper cassette and does not pick
up the paper in the bypass cassette.
To print out a Self Test Report displaying the status of the Auto
test and the Individual tests, press .
3. When you have completed the required Self Test, press Exit or
Stop to return to the Standby Mode.