Print Quality Checks - Lexmark MS310 Series Service Manual

5
Verify on the Menu settings page if the following are set to their default values:
•
Print resolution: 600 dpi
• Toner darkness: 8
6
Inspect the transfer roll for damage. Replace if damaged.
7
Inspect the toner cartridge and imaging unit for damage. Replace if damaged.
8
Print the Print quality pages to see if the problem remains. Use Tray 1 to test print quality problems.
9
Check to ensure the correct printer driver for the installed software is being used. An incorrect printer driver for
the installed software can cause problems. Incorrect characters could print, and the copy may not fit the page
correctly.

Print quality checks

Gray background or toner fog on prints
Leading edge
ABCDE
ABCDE
ABCDE
Trailing edge
Actions
Step 1
Check the cartridge plunger.
Is the cartridge plunger properly attached to the front door and is the
spring functioning properly?
Step 2
Remove any contamination from the CTLS contacts. Perform a print test.
Does the problem remain?
Step 3
Check the CTLS for damage.
Is it free of damage?
Step 4
Check the transfer roll for surface contamination or excessive wear.
Is it free of contamination and wear?
Step 5
Check the transfer roll left contact spring for damage.
Is it free of damage?
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Replace the power
supply. See
supply removal" on
page
Diagnostic information
49
No
Replace the cartridge
plunger. See
plunger removal" on
page 170.
The problem is solved.
Replace the printer.
Replace the transfer
roll. See
removal" on page
169.
Replace the printer.
"Power
190.
4514-220, -230
"Cartridge
"Transfer roll