Lexmark W850 - Page 37

Diagnostic information 2-15
4024-XXX
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.
7 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.
Go to step 8.
Problem solved.
8 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