Sensor (Adf Media Exit) Late Jam Service Check - Lexmark MB790MFP Service Manual

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7462
Step
2
Check the original document condition.
Is the original document free of paper clips and staples as
well as damage such as creases, tears, holes or excessive
wear?
3
Check the media path for contaminates.
Is the media path free of excess media dust and foreign
objects such as paper clips and staples?
4
Check the sensor (ADF 2nd scan) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Observe the line "sensor (ADF 2nd scan)"
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked?
5
Check the sensor (ADF 2nd scan) for proper connection.
Is the above component properly connected?
6
Check the ADF transport drive motor assembly for proper
connection.
Is the above component properly connected?
7
Place an undamaged document in the ADF, and perform a
ADF test.
Does the error remain?
Perform a print test using the ADF.
8
Does the problem remain?

Sensor (ADF media exit) late jam service check

Use this procedure for the following jams:
• 291.02
2-120
Service Manual
Check
Yes
Go to step 3.
Remove damaged
original document
and replace with a
new undamaged
original document.
Perform a ADF
test. If the problem
remains, go to
step 2.
Go to step 4.
Remove all
contaminates from
the media path.
Go to step 6.
Go to step 5.
Replace the
Replace the
sensor (ADF 2nd
connection.
scan).
Go to
"Sensor
(ADF 2nd scan)
removal" on
page
4-81.
Replace the ADF
Replace the
transport drive
connection.
motor assembly.
Go to
"ADF
transport drive
motor bracket
assembly w/
cable removal"
on page
4-77.
Replace the ADF
Problem solved.
controller card
assembly.
Go to
"ADF
controller card
removal" on
page
4-67.
Go to step 8.
Contact next
Problem solved.
highest level of
tech support.
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