Lexmark W850dn, Manual

Page: 72 / 327

2-50
Finisher Service Manual
4024-110
287.04 Sensor (upper media exit) off jam B
8 Check the drive motor (buffer/transport/connection.
Is the above motor properly connected?
Replace the drive
motor (buffer/
transport). Go to
“Drive motor
(buffer/
transport) and
belt (buffer/
transport)
removal” on
page 4-115
.
Replace the
connection.
9 Perform a test print.
Does the error still occur?
Replace the
finisher controller
card assembly.
Go to
“Finisher
controller card
assembly
removal” on
page 4-118
.
Problem solved.
Step Check Yes No
1 Check the media path.
1. Open the upper pinch guide assembly to the right.
2. Check four upper pinch guide pinch roll on the
upper pinch guide assembly and two upper media
transport roll assemblies by turning them with your
fingers.
Are the upper pinch guide pinch roll and upper media
transport roll assemblies installed correctly and do they
rotate smoothly?
Go to step 2. Clean or replace
the appropriate
roller and clean
the media path.
2 Are the four upper pinch guide pinch rolls on the upper
pinch guide assembly and two upper media transport
roll assemblies free of damage? Go to step 3. Clean or replace
the appropriate
roller and clean
the media path.
3 Check the sensor (upper media exit) for correct
operation.
Perform the sensor (upper media exit) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Media Path1.
5. Select Upper media exit.
Does the display on the operator panel change every
time the actuator of the sensor (upper media exit) is
operated?
Replace the
finisher controller
card assembly.
Go to
“Finisher
controller card
assembly
removal” on
page 4-118
.
Go to step 4.
4 Check the sensor (upper media exit) and main sensor
cable assembly connections.
Is the above sensor connected properly?
Replace the
sensor (upper
media exit). Go to
“Sensor (upper
media exit)
removal” on
page 4-104
.
Replace the
connection.
Step Check Yes No