Lexmark E450DN Service Manual - Page 75

Sensor Test duplex, Duplex Feed 1, Sensor Test

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4512-630 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. Select Sensor Test from DUPLEX TESTS. The message Sensor Test Testing displays. 2. Manually actuate each of the duplex sensors. When the sensor/switch is closed, CL (closed) displays, and when the sensor/switch is open, OP (open) displays. • Duplex input sensor • Duplex exit sensor 3. Press Back ( ) or Stop ( ) to exit the test. Duplex Feed 1 This test feeds a blank sheet of paper to the duplex paper stop position 1. This test can be run using any of the supported paper sizes. To run the Duplex Feed 1 Test: 1. Select Duplex Feed 1 from DUPLEX TESTS. The power indicator blinks while the paper is feeding, and the message Duplex Feed 1 Feeding... displays. The message Duplex Feed 1 Clear Paper displays when the paper reaches paper stop position 1, and the power indicator turns on solid. 2. Remove the media from the duplex unit, and clear the message on the operator panel by pressing Stop ( ). Diagnostic aids 3-17

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Diagnostic aids
3-17
4512-630
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.
Select
Sensor Test
from DUPLEX TESTS.
The message
Sensor Test Testing
displays.
2.
Manually actuate each of the duplex sensors. When the sensor/switch is closed,
CL
(closed) displays, and
when the sensor/switch is open,
OP
(open) displays.
•
Duplex input sensor
•
Duplex exit sensor
3.
Press
Back
(
)
or
Stop
(
)
to exit the test.
Duplex Feed 1
This test feeds a blank sheet of paper to the duplex paper stop position 1. This test can be run using any of the
supported paper sizes.
To run the Duplex Feed 1 Test:
1.
Select
Duplex Feed 1
from DUPLEX TESTS.
The power indicator blinks while the paper is feeding, and the message
Duplex Feed 1 Feeding
…
displays.
The message
Duplex Feed 1 Clear Paper
displays when the paper reaches paper stop position 1,
and the power indicator turns on solid.
2.
Remove the media from the duplex unit, and clear the message on the operator panel by pressing
Stop
(
)
.