Diagnostic Aids; Envelope Feeder Tests; Feed Test; Sensor Test - Lexmark W820 Service Manual

3. Diagnostic Aids

Envelope Feeder Tests

Feed Test

The Feed Test operation within the INPUT TRAY TESTS menu determines whether or not
the sensors and switches are working correctly. No information is printed on the feed test
pages since the laser isn't engaged during this test.
Note: The feed test can be run using any of the paper and envelope sizes supported by
the printer.
The pages are placed in the default output bin. However, the Feed Tests menu lets you
select the input source. Each of the installed sources is listed as an option within this
menu. For each source, the user has two choices:
•
•
From the Input Feed Test, press Menu to show:
•
Press Select to test the Envelope Feed. Select Single. One envelope feeds from the
envelope feeder and exits into the standard bin.
To exit the Envelope Feed test, press Return.

Sensor Test

Use this test to determine whether or not the sensors and switches are working correctly.
From the Base Sensor Test, press Menu to display:
•
•
To select one of the sensors, press Menu until the sensor you want displays. Press
Select on the sensor you want to check.
To exit the Envelope Sensor test, press Return.
4025 Options
Single (feed one sheet of media),
Continuous (continue feeding media until Return or Stop is pressed).
Envelope Feeder
SMH/ENV Empty
Env Feed Out
3-1
Diagnostic Aids