Lexmark 7462 series - Page 115

Mechanical feed error or timing error (external duplex) service check
Action Yes No
Step 1
Remove all media present in the media path.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
Check the sensor (duplex input) for damage, and if necessary,
replace the sensor (duplex input). Go to
“Sensor (duplex input)
removal” on page 382.
Does the problem remain?
Go to step 3. The problem is
solved.
Step 3
Check if the display on the operator panel changes every time the
sensing area of the sensor (duplex input) is interrupted or blocked.
a Enter the Diagnostic mode.
b Select Duplex sensor tests.
c Select Sensor test.
d Observe the line item, “input.”
If necessary, replace the external duplex unit assembly (external
duplex only) or the duplex input sensor assembly (internal duplex
only). Go to
“Duplex input sensor assembly removal” on
page 356.
Does the problem remain?
Go to step 4. The problem is
solved.
Step 4
Check the sensor (duplex exit) for damage, and if necessary,
replace the external duplex unit assembly.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Check if the display on the operator panel changes every time the
sensing area of the sensor (duplex exit) is interrupted or blocked.
a Enter the Diagnostic mode.
b Select Duplex sensor tests.
c Select Sensor test.
d Observe the line item, “exit.”
If necessary, replace the connection, the external duplex unit
assembly, or the external duplex assembly.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
7462
Diagnostic information
115