Service manual

DEVELOPMENT
SM 6-45 G130/G131
Detailed
Descriptions
Shutter Mechanism
The development unit and toner attraction pump each have a shutter mechanism.
The protrusion [A] on the development unit opens the shutter [B] in the pump when
the development unit is placed in the machine. At the same time, the protrusion [C]
on the pump opens the shutter [D] in the development unit. When both shutters are
open, toner can enter the development unit from the toner attraction pump.
The shutter spring [E and F] pulls and closes the shutter when the development
unit is removed.
6.5.6 TONER CARTRIDGE DETECTION
The memory chip [A] on each toner cartridge
stores the total “on” time of the toner supply
clutch. This is used to calculate the amount of
toner remaining in the toner cartridge. The chip
is also used to detect whether the cartridge is
installed (if the cartridge is not installed, the
machine does not detect a signal from the
memory chip).
G130D538.WMF
G130D539.WMF
[A]
[B]
[C]
[D]
[E]
[F]
[A]