Lexmark W850 - Sensor (Bridge Unit Media Exit) on Jam B

2-16 Finisher Service Manual
4024-XXX
281.01 Sensor (bridge unit media exit) On Jam B
Step Check Yes No
1 Check the media path.
1. Open the bridge unit top cover assembly of the
bridge unit assembly.
2. Check the transport belts and the six bridge unit
pinch rolls attached on the bridge unit top cover
assembly by turning them with your fingers.
Are the transport belts and the bridge unit pinch rolls
installed correctly?
Go to step 2. Clean or replace
the transport
belts and bridge
unit pinch rolls,
and clean the
media path.
2 Are two transport belts and the six bridge unit pinch roll
free of damage?
Go to step 3. Clean or replace
the transport
belts and bridge
unit pinch roll,
and clean the
media path.
3 Check the sensor (bridge unit media exit) for correct
operation.
Perform the sensor (bridge unit media exit) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Media Path1.
5. Select Bridge media exit.
Open the bridge unit top cover assembly.
Does the display on the operator panel change every
time the actuator of the sensor (bridge unit media exit)
is operated?
Go to step 5. Go to step 4.
4 Check the sensor (bridge unit media exit) connection.
Is the above sensor connected properly?
Replace the
sensor (bridge
unit media exit).
Go to “Sensor
(bridge unit
media exit)
removal” on
page 4-17.
Replace the
connection.
5 Check the bridge unit drive motor by opening the
finisher front door assembly and then closing it.
Open the bridge unit top cover assembly.
Does the bridge unit drive motor rotate normally?
Go to step 7. Go to step 6.
6 Check the bridge unit drive motor connection.
Is the above motor properly connected?
Replace the
bridge unit drive
motor. Go to
“Bridge unit
drive motor
assembly
removal” on
page 4-13.
Replace the
connection.