Sensor (Pre-Feed) On Jam (Tray 1 Feed) - Lexmark W850n Service Manual

4024-110

241.00 Sensor (pre-feed) on jam (tray 1 feed)

Step Check
1
Check the media condition.
Is the media in the tray crumpled or damaged?
2 Check the media size setup.
Does the media size in use match the size set for tray 1?
Check the rolls for tray 1.
3
Remove tray 1, check it over.
Is the feed roll, separation roll, and pick roll free of excess
wear and contamination?
4 Check the media position.
Open the printer left door assembly, and visually check it.
Does the media touch the sensor (pre-feed) in tray 1 media
feed unit assembly?
Check the sensor (pre-feed) for proper operation in tray 1.
5
1. Enter Diagnostics mode.
2. Select INPUT TRAY TESTS.
3. Select Sensor test.
4. Select Tray 1.
5. Select Pre-feed.
Remove the media tray assembly, and check it.
Does the display on the operator panel change every time a
white piece of paper is placed over the sensing area?
6
Check the sensor (pre-feed) connection.
Is the sensor (pre-feed) connected properly?
7 Check the media feed lift motor in tray 1 for proper
operation.
1. Enter Diagnostics mode.
2. Select MOTOR TESTS.
3. Select Tray 1 Feed mtr.
Pull out tray 1, and check over.
Does the media feed lift motor rotate normally?
8 Check the media feed lift motor connection.
Is the media feed lift motor connected properly?
2-32
Printer Service Manual
Yes No
Replace the Go to step 2.
damaged media
with new.
Go to step 3. Replace the
media, or change
the media size
setup.
Go to step 4. Clean or replace
the feed roll,
separating roll, or
pick roll.
Go to
removal" on
page
"Separation roll
removal" on
page
"Pick roll
removal" on
page
Remove the Go to step 5
media.
Ensure the media
Go to step 6.
feed unit front
guide is installed
properly.
Go to step 7.
Replace the Replace the
sensor (pre-feed). connection.
Go to step 10. Skip to step 9.
Go to step 9. Replace the
connection.
"Feed roll
4-42,
4-46, and
4-48.