Lexmark X850e Service Manual page 129

Step Check
2 Check the sensor (bridge unit media entrance)
connection.
Is the above sensor connected properly?
3 Check the bridge unit drive motor for proper operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Finisher Motor Tests.
4. Touch Bridge unit drv mtr.
Open the top cover on the bridge unit.
Does the bridge unit drive motor operate properly?
4 Check the bridge unit drive motor connection.
Is the above motor connected properly?
5 Perform a print test.
Does the error still occur?
6 Perform a print test.
Does the error still occur?
Yes No
Replace the Replace the
sensor (bridge connection.
unit media
entrance).
Go to "Sensor
(bridge unit
media entrance)
removal" on
page 4-93.
Go to step 5. Go to step 4.
Replace the Replace the
bridge unit drive connection.
motor.
Go to "Bridge
unit drive motor
assembly
removal" on
page 4-90.
Replace the Problem solved.
bridge unit
interface card
assembly.
"Bridge
Go to
unit interface
card assembly
removal" on
page 4-194.
Replace the Problem solved.
finisher controller
card assembly.
"Finisher
Go to
controller card
assembly
removal" on
page 4-195.
Diagnostic information
7500-XXX
2-61