Lexmark CX825 Service Manual page 493

Hole punch unit service check
Action
Step 1
a
Check the HPT and multiposition staple, hole punch finisher for
proper installation.
b
Open door K and clear paper jams, fragments, and obstructions
along the paper path.
c
Enter the Diagnostics menu, and then touch Output bin quick
feed.
d
Select a bin and test type, and then start the test.
Does the problem remain?
Step 2
a
Manually turn knob K1 and the hole punch unit gears.
b
Check if the punch rotates with the knob and gears.
Does the punch rotate with knob K1 and the gears?
Step 3
Check the quality of the punched holes on the media.
Is the quality of the holes good?
Step 4
Replace the hole punch unit.
Does the problem remain?
Step 5
a
Enter the Diagnostics menu, and then navigate to:
Output device diagnostics > Sensor tests > Horizontal paper
transport
b
Find the sensor (HPU).
Does the sensor status change while toggling the sensor?
Step 6
Reseat the sensor cable, and then check the sensor and actuator
for misalignment and damage.
Is the sensor properly installed and free of damage?
Step 7
Reinstall or replace the sensor. See
removal" on page 876.
Does the problem remain?
"Sensor (hole punch unit)
Diagnostic information
493
Yes No
Go to step 2. The problem is
solved.
Go to step 5. Go to step 3.
Go to step 5. Go to step 4.
Go to step 5. The problem is
solved.
Go to step 8. Go to step 6.
Go to step 8. Go to step 7.
Go to step 8. The problem is
solved.
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