Xerox 2135N - Phaser Color Laser Printer, Quick Reference Manual

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Service Guide 63
Switch scan test
Use this test to check the operation of the printer’s switches and sensors.
1.
Enter the diagnosis mode by pressing and holding the Menu (1) and
Enter (4) keys as you turn on the printer.
2. Press the
Menu (1, 5)
keys to scroll through the list of test until
SWITCH
SCAN
appears on the upper display.
3. Press the Item (2,6) keys to scroll through the list of sensor tests, called
SWITCH SCAN tests. The table below list the SCAN test items and
which sensors and switches and test by that menu item.
4. Pressing the Value (3) key activates the currently displayed switch scan
test. The SWITCH SCAN number begins to blink, and the
corresponding logic state (High or Low) of the particular switches or
sensors scanned by the test (listed as 1=, 2=, 3=, and 4=) are displayed.
5. With a test active, you can manually actuate the sensors being scanned
and look for a change at the control panel.
6.
Press Value (7) to stop the current test.
7.
Repeat steps 2 through 5 as required.
8. To exit the switch scan test mode, press Enter (4) .