Lexmark X850e Service Manual page 141

Step Check
11 Check the drive motor (buffer/transport) for proper
operation.
Perform the drive motor (buffer/transport) test.
Remove the finisher rear upper cover. Go to
upper cover removal" on page
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Finisher Motor Tests.
4. Touch Motor (buffer/transport).
Does the drive motor (buffer/transport) operate
properly?
12 Check the drive motor (buffer/transport) connection.
Is the above motor connected properly?
13 Perform a print test.
Does the error still occur?
14 Perform a print test.
Does the error still occur?
Yes
Go to step 13.
"Rear
4-101.
Replace the drive
motor (buffer/
transport).
Go to
motor (buffer/
transport) and
belt (buffer/
transport)
removal" on
page
Replace the
bridge unit
interface card
assembly.
Go to
unit interface
card assembly
removal" on
page
Go to step 14.
Replace the
finisher controller
card assembly.
Go to
controller card
assembly
removal" on
page
7500-XXX
No
Go to step 12.
Problem solved.
"Drive
4-192.
Problem solved.
"Bridge
4-194.
Problem solved.
"Finisher
4-195.
Diagnostic information
2-73