Lexmark W820 - Optra B/W Laser Printer Service Manual page 98

Step Actions and Questions
5 STAPLER ASSEMBLY
Replace the Stapler Assembly. Go to
Removal" on page
following: Copies 5, Staple ON, Staple Dual
Does the Stapler Base move freely back and forth?
6 STAPLER TRAVERSE MOTOR
Replace the Stapler Traverse Motor. Go to
Assembly Removal" on page
Menu, select the following: Copies 5, Staple ON, Staple Dual
Does the Stapler Traverse Motor test ok?
7 FINISHER MAIN BOARD
Replace the Finisher Main Board. Go to
Main Removal" on page
Does the Stapler function correctly?
8 MCU BOARD
Replace the MCU Board. Refer to the Printer Service Manual.
Check the Stapler function.
Does the Stapler function correctly?
9 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 Stapler area, Compiler
area, or along the paper path.
989 - Error Code Service Check
Logic control sensed that there is a problem with the Stapler Front Position Sensor.
Step Actions and Questions
1 SENSOR TEST
Enter Diagnostics and check the Stapler Front Sensor function.
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?
2 STAPLER FRONT SENSOR
Replace the Stapler Front 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?
2-38
Service Manual
4025-Finisher
"Stapler I Assembly
4-92. From the Finishing Menu, select the
"Traverse Motor
4-102. From the Finishing
"PWB Assembly-
4-132. Check the Stapler function.
Yes No
Problem Go to step 9
solved
Problem Go to step 7
solved
Problem Go to step 8
solved
Problem Go to step 9
solved
Yes No
Go to step 3 Go to step 2
Problem Go to step 7
solved