Xerox VersaLink B7025 Service Manual page 1292

The toner cartridge is equipped with customer replaceable unit monitor (CRUM). A CRUM
monitors and stores information about the customer replaceable unit (CRU). The information
stored in the CRUM is used to:
• Monitor CRU usage (total number of copies/prints)
• Indicate how near the CRU is to the end of its life.
• Prevent the installation and use of an unauthorized or incorrect CRU (CRUM checks for
Xerox trademark on the CRU)
• Indicate that a new CRU has been installed
The CRUM consists of two components - a CRUM Tag and a CRUM PWB. The CRUM PWB
for the toner cartridge is mounted on the toner dispense drive,
the toner cartridge. Refer to Figure 3.
Toner cartridge CRUM PWB
Figure 3 Toner cartridge CRUM PWB
Product Technical Overview
Toner Dispenser
The toner is transported from the toner cartridge to the drum cartridge by a dispenser which
contains an auger. The dispenser is driven through gears by the dispense motor under the con-
trol of the automatic toner control (ATC) system.
The dispense motor also drives an agitator in the toner cartridge to stir the toner. Refer to
ure 4.
PL 90.10 Item 2 at the rear of
April 2017
8-46
Drum cartridge
Figure 4 Dispenser assembly
Xerox® VersaLink® B7025/B7030/B7035 Multifunction Printer
Fig-
Dispenser
Dispense motor
Toner cartridge
Launch Issue