Lexmark CX725 - Page 209

Action Yes No
Step 7
Reconnect the cable.
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 9. The problem is
solved.
Step 9
Replace the motor (K developer). See
“Motor (EP drive) removal”
on page 350.
Does the problem remain?
Go to step 10. The problem is
solved.
Step 10
Replace the controller board. See
“Controller board removal” on
page 409.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Isolation unit service check
Action Yes No
Step 1
Reset the printer.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
a Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests > Isolation
b Tou ch Start.
Does the motor run?
Go to step 3. Go to step 5.
Step 3
Manually turn the isolation unit input rollers.
Is there binding or uneven movement when turning the rollers?
Go to step 4. Go to step 5.
Step 4
Replace the isolation unit. See
“Isolation unit removal” on
page 423.
Does the problem remain?
Go to step 5. The problem is
solved.
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Diagnostic information
209