Lexmark MB790MFP Service Manual page 164

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Step
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?
8
Perform a print test using the ADF.
Does the problem remain?
Check
Yes
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.
Diagnostic information
7462
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No
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