Lexmark W820 - Optra B/W Laser Printer Service Manual page 81

Step Actions and Questions
6 H-TRA INPUT SENSOR
Replace the H-Tra Input Sensor. Go to
on page 4-20. Enter Diagnostics and check the H-Tra Input
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?
7 H-TRA GATE SOLENOID
Replace the H-Tra Gate Solenoid. Enter Diagnostics and
check the H-Tra Gate Solenoid 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?
8 FINISHER MAIN BOARD
Replace the Finisher Main Board. Enter Diagnostics and check
the H-Tra Input 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?
9 MCU BOARD
Replace the MCU Board. Refer to the Printer Service Manual.
Enter Diagnostics and check the H-Tra Input Sensor function.
Does the H-Tra Input Sensor test ok?
288 - Attendance Message
Logic Control sensed that the Finisher Path Sensor did not deactuate within the specified time after it was
actuated.
Step Actions and Questions
1 PATH LOCATION INSPECTION
Inspect the position of the sheet of paper in the Finisher.
Has the trail edge of the sheet of paper cleared the
Finisher Path Sensor?
2 SENSOR TEST
Enter Diagnostics and check the Finisher Path 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?
4025-Finisher
"Sensors Removal"
Yes No
Problem Go to step 8
solved
Problem Go to step 8
solved
Problem Go to step 9
solved
Problem
solved
Yes No
Go to step 2 Go to step 5
Go to step 4 Go to step 3
Diagnostic Information
2-21