Lexmark W820 - Optra B/W Laser Printer Service Manual page 93

Step Actions and Questions
2 EXIT ROLL OPEN/CLOSE HP SENSOR
Replace the Exit Roll Open/Close HP Sensor. Go to
Removal" on page
Exit Roll Open/Close HP Sensor. Insert then remove a sheet of
paper into the sensor.
Does the Operator Panel LCD change between OP and CL
as you insert then remove the paper?
3 MOTOR TEST
Enter Diagnostics and select Output Bin Tests. Select Feed
Test, Output Bin 2 to feed paper through the Finisher.
Does the Exit Roll Open/Close Motor test ok?
4 EXIT ROLL OPEN/CLOSE MOTOR
Replace the Exit Roll Open/Close Motor. Go to
Removal" on page
Does the Exit Roll Open/Close Motor test ok?
5 DRIVE TRAIN INSPECTION
Inspect the drive train, including belts, gears, and levers of the
entire Exit Roll Assembly.
Does the entire drive train of the Exit Roll Assembly
appear to be in good condition, with no damaged or
slipping gears and no broken levers?
6 FINISHER MAIN BOARD
Replace the Finisher Main Board. Go to
Main Removal" on page
the Exit Roll Open/Close HP Sensor. Insert then remove a
sheet of paper into the sensor.
Does the Operator Panel LCD change between OP and CL
as you insert then remove the paper?
7 MCU BOARD
Replace the MCU Board. Refer to the Printer Service Manual.
Enter Diagnostics and check the Exit Roll Open/Close HP
Sensor.
Does the Exit Roll Open/Close HP Sensor test ok?
8 The following Finisher FRUs and areas are associated with
this specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using these steps, replace each FRU or troubleshoot
each area listed below, one at a time, until you isolate and
solve the problem.
• Wiring and connectors linking the FRUs
• Broken or damaged FRUs within the Exit Roll area.
4025-Finisher
4-84. Enter Diagnostics and check the
4-84. Exit Roll Open/Close Motor function.
"PWB Assembly-
4-132. Enter Diagnostics and check
Yes
Problem
solved
"Motor
Go to step 5
Problem
solved
"Motor
Go to step 6
Problem
solved
Problem
solved
Diagnostic Information
No
Go to step 6
Go to step 4
Go to step 6
Replace the
damaged
FRUs
Go to step 7
Go to step 8
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