Xerox 3150 - Phaser B/W Laser Printer, Service Manual

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Alignment and Adjustments
6-4
08 Feed and exit sensor test
The OFF LED indicates the status of the exit sensor.
The 3rd LED indicates the status of the feed sensor.
Note : The feed sensor also detects the presensce of the toner cartridge.
09 Cover open sensor test
The ON LED indicates the status of the cover open sensor.
10 Fuser test
When [Enter] is pressed, the heat lamp is turned ON. The ON and OFF LEDs indicate the lamp
status.
11 Hot burn test
When the [Enter] button is pressed, the printer continuously prints without detection. Turn the
power OFF to stop this test.
12 Cleaning mode print
This causes the cleaning cycle to be repeated continously. Turn the power OFF to stop this test.
13 THV(+) Trigger All HV
High voltage is output to each high voltage terminal. The laser unit and fan are started. In this
mode the electronic resistance of the transfer roller is detected and the THV is checked.
14 PTL Test
Tests the pre-transfer lamp. The ON and OFF LEDs indicate the lamp status.
15 Fan test
Tests the fan. The ON and OFF LEDs indicate the fan status.
16 Regi clutch test
Tests the registration clutch. The ON and OFF LEDs indicate the clutch status.
17 Regi sensor test
Tests the registration sensor. The ON and OFF LEDs indicate the sensor status.
18 MP pickup test
Tests the Tray 1/MPT pick clutch. The ON and OFF LEDs indicate the clutch status.
19 MP sensor test
Tests the Tray 1/MPT sensor. The ON and OFF LEDs indicate the sensor status.