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

2-14 Finisher Service Manual
4024-XXX
281.00 Sensor (bridge unit media exit) On Jam A
3 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 5. Go to step 4.
4 Check the bridge unit drive motor connection.
Is the above motor connected properly?
Replace the
bridge unit drive
motor. Go to
“Bridge unit
drive motor
assembly
removal” on
page 4-13.
Replace the
connection.
5 Perform a test print.
Does the error still occur?
Replace the
bridge unit
interface card
assembly. Go to
“Bridge unit
interface card
assembly
removal” on
page 4-117.
Problem solved.
6 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 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.
Step Check Yes No