Duplex Tests; Feed Test; Sensor Test - Lexmark W820 Service Manual

Duplex Tests

Feed Test

Use the Duplex Quick Test to feed paper and to verify that the duplex Top Margin is set
correctly. This test prints a duplexed version of the Quick Test page that can be used to
adjust the Top Margin for the backside of the page. You have the option of printing one
duplexed page (Single) or continuously printing duplexed pages until Return or Stop is
pressed (Continuous).
Note: The duplex quick test page should be printed on Letter or A4 paper.
While the page is printing the following message is displayed. The Power indicator also
blinks while the page is printing.
Quick Test
Printing...
The single Duplex Quick Test cannot be cancelled. When the continuous test is
cancelled, the following message is displayed until pages are done printing.
Quick Test
Cancelling...
The printer attempts to print the Quick Test page(s) from the default paper source.
However, if the default source only supports envelopes, then the page(s) are printed from
Tray 1. The page(s) consists of alignment diamonds, horizontal lines used for skew
adjustment, the page count setting, printer serial number, code levels, and print
registration settings.

Sensor Test

Use this test to determine whether or not the duplex sensors and switches are working
correctly. Select the Sensor Test operation from the DUPLEX TESTS menu to expose a
list of the following sensors.
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To select one of these sensors, press Menu until the sensor you want is displayed. Press
Select on the sensor to display a screen such as the following:
DUP Exit Sensor
CL
3-2
Service Manual
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DUP Exit Sensor
DUP Wait Sensor
DUP Regi Sensor
DUP Interlock
DUP Fuser Exit
4025 Options