Lexmark MS821dn User Manual

Mottled print and dots
Note: Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to
Settings > Troubleshooting > Print Quality Test Pages. For non‑touch‑screen printer models, press
to
navigate through the settings.
Action Yes No
Step 1
a Check if the printer is using a genuine and supported Lexmark
toner cartridge.
Note: If the cartridge is not supported, then install a
supported one.
b Print the document.
Is the print mottled?
Go to step 2. The problem is
solved.
Step 2
Check the printer for leaked toner contamination.
Is the printer free of leaked toner?
Go to step 4. Go to step 3.
Step 3
a Replace the toner cartridge.
b Print the document.
Is the print mottled?
Go to step 4. The problem is
solved.
Step 4
Check if the mottled print only appears on the edges or back side
of the pages.
Is the print mottled only on the edges or back side of the pages?
Go to step 5. Go to step 6.
Step 5
a Replace the transfer roller.
b Print the document.
Is the print mottled?
Go to step 6. The problem is
solved.
Troubleshooting 165

Lexmark MS821dn Specifications

General

Print Technology	Monochrome Laser
Print Resolution	1200 x 1200 dpi
Duplex Printing	Yes
Processor Speed	1 GHz
Standard Memory	512 MB
Standard Paper Input	650 sheets
Output Capacity	550 sheets
Monthly Duty Cycle	Up to 275, 000 pages
Connectivity	USB, Ethernet
Network Ready	Yes
USB Port	Yes
Operating System Compatibility	Windows, Mac, Linux
Maximum Paper Input	4400 sheets
Print Speed	Up to 55 pages per minute
Ethernet	Gigabit Ethernet