Lexmark MS821dn User Manual

Action Yes No
Step 2
a Check if the printer is using a genuine and supported Lexmark
toner cartridge.
Note: If the toner cartridge is not supported, then install a
supported one.
b Print the document.
Do vertical dark streaks with missing images appear on prints?
Contact
customer
support.
The problem is
solved.
Repeating defects
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
Using the Print Quality Test Pages, check if the distance
between the repeating defects is equal to any of the following:
• 96 mm (3.78 in.)
• 49 mm (1.93 in.)
• 47.5 mm (1.87 in.)
• 30.2 mm (1.18 in.)
Does the distance between the repeating defects match any of the
measurements?
Go to step 2. Take note of the
distance, and then
contact
customer
support.
Step 2
a Replace the imaging unit.
b Print the document.
Do the repeating defects appear?
Contact
customer
support.
The problem is
solved.
Troubleshooting 179

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