1-10 Phaser 6121MFP Service Manual
General Information
Consumables
Consumables consist of 4 Toner Cartridges.
Each Toner Cartridge has a CRUM (Customer Replaceable Unit Meter) to record 
toner usage information. A CRUM counts the amount of remaining toner. When 
toner empty is detected, Life End status is displayed to indicate toner empty.
CMY Toner is not consumed when printing in monochrome mode or when printing 
Gray scale. Internal counters track consumables and maintenance life.
Life ratings are based on A-size sheets at 5% coverage.
Toner Cartridge
Print Life
C,M,Y Black
Standard Capacity 1,500 pages 1,000 pages
High Capacity 2,500 pages 2,500 pages