Lexmark MX71x Service Manual page 89

Action
Step 6
Perform a MPF print test, and check the MPF pick solenoid for proper
operation.
Does the component operate properly?
Step 7
Check the pick roller in the media tray being picked from.
Is the pick roller free of excess wear and contamination?
Step 8
Check the aligner assembly for obstructions.
Is the component free from obstructions?
Step 9
Check the sensor (input) for proper operation.
a
Enter the diagnostic mode.
b
Select Base sensor test.
c
Observe the line item input.
Does the display on the control panel change every time the sensing area
of the sensor is interrupted or blocked?
Step 10
Check the sensor for proper connection.
Is the sensor connected properly?
Step 11
Perform a print test, and check the appropriate media feeder.
Is the media properly picked and advanced out of the appropriate media
tray?
Step 12
Perform a print test, and check the main motor assembly.
Is the media properly transported and able to reach the sensor (input)?
Step 13
Perform a print test.
Does the problem remain?
Yes
Go to step 9.
Go to step 8.
Go to step 9.
Go to step 11.
Replace the Sensor
(input). See
(input) removal" on
page
Go to step 12.
Go to step 13.
Contact the next level
of support.
Diagnostic information
89
No
Replace the MPF pick
solenoid.
Clean or replace the
pick roller. See
roller assembly
removal" on page
541.
Remove obstructions.
Go to step 10.
Replace the
"Sensor connection.
473.
Replace the
appropriate media
feeder. See
feeder removal" on
page 429.
Replace the main drive
motor. See
motor removal" on
page 428.
The problem is solved.
7463
"Pick
"Media
"Main drive