Lexmark MS521 Service Manual

Actions Yes No
Step 1
Remove the imaging unit, and then inspect the white
photoconductor coupler (A). The coupler should be firmly
connected to the imaging unit and should not freely rotate.
Does the coupler move freely or appear damaged?
Go to step 2. Go to step 3.
Step 2
Replace the imaging unit.
Does the problem remain?
Go to step 3. The problem is
solved.
Step 3
Replace the main drive gearbox. See
“Main drive gearbox
removal” on page 178.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Incorrect margins on prints check
Note: Before performing this print quality check, go to the control panel home screen and navigate to
Settings > Troubleshooting > Print Quality Test Pages, and then perform the Initial print quality check.
See
“Initial print quality check” on page 26.
4600-830, -835, -895
Diagnostics and troubleshooting
62

Lexmark MS521 Specifications

General

Print Technology	Monochrome Laser
Print Speed	Up to 46 ppm
Print Resolution	1200 x 1200 dpi
Monthly Duty Cycle	Up to 120, 000 pages
Processor Speed	1 GHz
Standard Output Capacity	250 sheets
Operating System Compatibility	Windows, Mac OS, Linux
Hard Drive	Optional
Recommended Monthly Page Volume	2000 - 15000 pages
Duplex Printing	Standard
Connectivity	USB, Ethernet
Media Types Supported	Paper Labels, Card Stock, Envelopes, Plain Paper, Transparencies