Brother DCP 8085DN

2-22
Confidential
3.4.3 New toner detection
(1) The main motor will drive gear (4) through the interconnection of other gears.
(2) When gear (4) is rotated, rib A on that gear will push against the new toner actuator; the
new toner sensor will detect the actuator motion, and the toner sensor detects that a
new toner cartridge has been installed.
(3) The standard toner cartridge has Rib A and Rib B on gear (4).
When the toner actuator is pushed twice, the two signals that are generated by the new
toner sensor, tell the machine that a standard toner cartridge has been installed.
(4) The high yield toner cartridge only has Rib A on gear (4).
When the toner actuator is pushed once, the signal that is generated by the new toner
sensor, tell the machine that a high yield toner cartridge has been installed.
<Printer side view when a new toner cartridge is installed>
Fig. 2-21
Gear (4)
Gear (3)
Rib B
Rib A
Gear (1)
Gear (2)
New toner actuator
New toner sensor
Toner cartridge
Relay front PCB ASSY