Lexmark W820 - Optra B/W Laser Printer Service Manual page 88

Step Actions and Questions
2 SENSOR TEST
Enter Diagnostics and check the Compiler Tray Paper 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?
3 COMPILER TRAY PAPER SENSOR
Replace the Compiler Tray Paper Sensor. Go to
and Roll Shaft Removal" on page
check the Compiler Tray Paper 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?
4 FINISHER MAIN BOARD
Replace the Finisher Main Board. Go to
Removal" on page
Compiler Tray Paper 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?
5 PATH PAPER INSPECTION
Inspect the Exit Rolls in the Compiler.
Are all of the Exit Rolls in the Compiler clean and free of
obvious wear and damage?
6 DRIVE TRAIN TEST
Enter Diagnostics and select Output Bin Tests. Select Feed Test,
Output Bin 2 to run the Finisher Main Feed Motor.
Does the Finisher Main Feed Motor run smoothly?
7 DRIVE TRAIN INSPECTION
Inspect the drive train, including belts, pulleys, and gears, of the
entire Finisher Assembly from the Finisher Main Feed Motor to the
Compiler Exit Rolls.
Does the entire drive train of the Finisher Assembly appear to
be in good condition, with no damaged or slipping belts and
no chipped or broken pulleys or gears?
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
• Compiler Tray and Compiler Move Tray
2-28
Service Manual
4025-Finisher
4-80. Enter Diagnostics and
"PWB Assembly-Main
4-132. Enter Diagnostics and check the
Yes
Go to step 4
Problem
solved
"Compiler Roll
Problem
solved
Go to step 6
Go to step 7
Go to step 8
No
Go to step 3
Go to step 4
Replace the
MCU Board
Replace the
suspect Rolls
Replace the
Finisher Main
Feed Motor
Replace the
suspect belts,
pulleys, and
gears