Lexmark W820 Service Manual page 98

Step Actions and Questions
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
Error Code 260
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 DUPLEX WAIT SENSOR INSPECTION
Inspect the Duplex Wait Sensor for contamination or paper
scraps that may be actuating the sensor.
Is the Duplex Wait Sensor clean and free of paper scraps?
2 DUPLEX WAIT SENSOR INSPECTION
Inspect the Duplex Wait Sensor for damage, such as a broken
spring or actuator, that may have locked the Sensor in the on
position.
Is the sensor undamaged?
3 DUPLEX WAIT SENSOR TEST
Enter Diagnostic Mode, select Duplex Wait Sensor.
Insert, then remove, a sheet of paper into the Duplex Wait
Sensor.
Does the Control Panel LCD change between OP and CL
as you insert then remove the paper?
4 DUPLEX PWB REPLACEMENT
Replace the
Does the error code appear?
5 MCU PWB REPLACEMENT
Replace the printer Engine Board (MCU PWB). Go to the
printer service manual for the Removal and Replacement
Procedure.
Does the error code appear?
2-16
Service Manual
"Duplex PWB and Bracket" on page
4025 Options
4-7.
Yes No
Yes No
Go to step 2 Clean or clear
paper scraps
from the
Sensor
Go to step 3 Replace the
"Duplex Wait
Sensor" on
page 4-14
Go to step 4 Replace the
"Duplex Wait
Sensor" on
page 4-14
Go to step 5 Problem
solved
Go to step 6 Problem
solved