Toner Specks Appear On Prints - Lexmark MS310 Series Service Manual

Actions
Step 1
Check if the fuser screws are tightly fastened.
Are they tightly fastened?
Step 2
a
Turn off the printer.
b
Remove the rear door and cover.
c
Disconnect the fuser cable connected to PCN5 of the power supply.
d
Check for approximate correct resistance on the fuser cable:
•
220V fuser—43 ohms
•
110V fuser—10 ohms
•
100V fuser—8 ohms
Is the resistance equal to any of the above values?
Step 3
Check the following fuser components for wear or damage:
•
Gears
•
Exit rollers
•
Belt fuser
Are they free of damage?

Toner specks appear on prints

Actions
Step 1
Check the imaging unit for wear or damage.
Is it free of wear or damage?
Step 2
Make sure the paper path is free of debris or toner contamination.
Does the problem remain?
Yes
Go to step 2.
Go to step 3.
Replace the power
supply. See
supply removal" on
page
Yes
Go to step 2.
Go to step 3.
Diagnostic information
56
No
Tighten the screws.
Replace the fuser. See
"Fuser removal" on
page 210.
Replace the fuser. See
"Power "Fuser removal" on
page 210.
190.
No
Replace the imaging
unit.
The problem is solved.
4514-220, -230