Lexmark W820 Service Manual page 132

Attendance Message 202
There is a paper jam between the Fuser Exit Switch and the Face Up
Exit Sensor.
Logic Control on the MCU PWB sensed the Face Up Exit Sensor was not actuated within
the specified time since the Fuser Exit Switch was actuated.
Step Actions and Questions
1 OFFSET UNIT INSPECTION
Remove the Fuser Full Cover.
Check the Offset Unit for lodged paper scraps or damage.
Is the Offset Unit clean and undamaged?
2 FACE UP EXIT SENSOR TEST
Enter Diagnostic Mode and select Face Up Exit Sensor.
Insert and 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 PAPER FEED TEST
Enter Diagnostic Mode and select Duplex Quick Test.
The Face Up Clutch and the Exit Gate Solenoid should
operate during the paper feed exercise.
Do the Offset Rollers rotate? Does the Exit Gate Solenoid
actuate during the Quick Test?
4 MCU PWB REPLACEMENT
Replace the
Does the error code appear?
5 The following printer 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 the steps in this Service Check, 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
• I/O PWB - Go to
2-36
Service Manual
"Engine Board (MCU PWB)" on page 4-92
"I/O PWB" on page
4025-XXX
4-89.
Yes No
Go to step 2 Clean or
replace the
"Offset/Exit
Assembly"
on page 4-69
Go to step 3 Replace the
"Face Up
Exit Sensor"
on page 4-77
Go to step 4 Replace the
"Offset/Exit
Assembly"
on page 4-69
Go to step 5 Problem
solved