Duplex Tests; Input Tray Tests; Feed Tests - Lexmark X850e Service Manual

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DUPLEX TESTS

Quick Test
This test prints a duplex version of the Quick Test that can be used to verify that the correct placement of the top
margin on the back side of a duplex page. You can run one duplexed page (Single), or continue printing
duplexed pages (Continuous) until is pressed Stop
Make sure either letter or A4 size paper is loaded in the default paper source. If the default source only supports
envelopes, then the Quick Test will be printed from Tray 1.
To run the Quick Test:
1.
Touch DUPLEX TESTS from the Diagnostics Menu.
2.
Touch Quick Test.
Touch Single or Continuous. Quick Test Printing... appears on the LCD.
3.
•
The single Duplex Quick test cannot be canceled.
•
The printer attempts to print the Quick Test Page from the default paper source. If the default paper
source only supports envelopes, then the page is printed from Tray 1.
•
Check the Quick Test Page for the correct registration between the placement of the first scan line on
the front and back side of a duplexed sheet.
The single test stops automatically when a single duplex sheet is printed, and the continuous test continues until
you press Stop
Sensor Test (duplex)
This test is used to determine whether or not the duplex sensors and switches are working correctly. The test
allows you to actuate the duplex input sensor located in the back part of the duplex unit and the duplex exit
sensor located in the return paper path.
1.
Touch DUPLEX TESTS from the Diagnostics Menu.
2.
Touch Sensor Test.
Touch Duplex wait. Duplex wait Testing... appears on the LCD.
3.
Manually actuate each of the duplex wait sensors. When the sensor is closed, Closed displays; when the
4.
sensor is open, Open displays.
Press Stop

INPUT TRAY TESTS

Feed Tests

Use this test to observe the paper path of media as it passes through the printer. To observe the paper path,
open the upper read door while this test executes. No information is printed on the feed test pages since the
laser is not engaged during this test.
Note: The upper front door (used to access the print cartridge) cannot be opened during the feed test.
You can perform the feed test using media from any installed input source. All pages used during the feed test
are dropped into the default output bin.
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to cancel the test.
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