Error Code 997 - Lexmark W820 Service Manual

Error Code 231
There is a paper jam at the Duplex Exit Sensor.
Logic Control on the MCU PWB sensed that the Duplex Exit Sensor did not actuate within
the specified time after the Face Up Exit Sensor was actuated.
Step Actions and Questions
1 PAPER INSPECTION
Inspect the paper that is loaded in the paper cassette.
Is the paper that is loaded in the cassette wrinkled or
damaged?
2 PAPER PATH INSPECTION
Observe the location of the last sheet of paper out of the
Duplex Unit.
Did the paper exit the Duplex Unit?
3 DUPLEX UNIT EXIT SENSOR TEST
Enter Diagnostic Mode, select Duplex Exit Sensor.
Insert, then remove, a sheet of paper into the Duplex Exit
Sensor.
Does the Control Panel LCD change between OP and CL
as you insert then remove the paper?
4 DUPLEX MOTOR TEST
Enter Diagnostic Mode, select Duplex Quick Test.
Does the Duplex Drive Motor run and do the gears of the
Drive Assembly rotate?
5 EXIT ROLL AND TRANSPORT ROLL CHECK
While running Diagnostic Mode - Duplex Quick Test observe
the Exit and Transport Rolls.
Do the Exit Roll and Transport Roll rotate?
6 EXIT ROLL BELT REPLACEMENT
Replace the
Does the error code appear?
7 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, one at a time, until you isolate
and solve the problem.
•
Wiring and connectors linking the FRUs
•
MCU PWB - Go to the Printer Service Manual for the
Removal and Replacement Procedure.
•
I/O PWB - Go to the Printer Service Manual for the Removal
and Replacement Procedure.
2-12
Service Manual
"Exit Roll Belt" on page
4025 Options
4-16.
Yes No
Replace the Go to step 2
paper with
new paper
Go to step 3 Go to step 4
Replace the Replace the
"Duplex "Duplex Exit
PWB and Sensor" on
Bracket" on page 4-10
page 4-7
Go to step 5 Replace the
"Duplex
Drive
Assembly"
on page 4-9
Replace the Go to step 6
"Exit Roll
Belt" on
page 4-16
Go to step 7 Problem
solved