Phaser 6121MFP Service Manual 1-9
General Information
Maintenance Items
Routine maintenance items are parts or assemblies that require periodic 
replacement. These items are typically customer replaceable (CRU).
The listed items have limited life and require periodic replacement.
 
Print life is based on “typical” office printing and 5% coverage per color on 24 
lb. paper. Print life figures are not guaranteed and varies depending on usage 
habits. Imaging Unit print life is based on 3-page jobs using letter-size paper.
Maintenance Items
Item Print Life
Transfer Roller Up to 50,000 pages
Fuser Up to 50,000 pages
Imaging Unit Approximately 30,000 pages
Tray Separator Pad Up to 50,000 pages
ADF Feed Roller Up to 35,000 pages
ADF Separator Pad Up to 35,000 pages
Item Description
1Transfer Roller
2Fuser
3Imaging Unit
4 Toner Cartridge