Toner Level Detection - Canon imageRUNNER 2525 Series Service Manual

If the developing unit toner sensor (TS1) detects the absence of the toner in the developing unit, the hopper motor (M7) drives
to rotate the toner feed screw to feed toner in the sub hopper to the developing unit. Also, if the sub hopper toner sensor (TS2)
detects the absence of the toner in the sub hopper, the bottle motor (M7) drives to rotate the toner cartridge to feed the toner in
the toner cartridge to the sub hopper.
If the sub hopper toner sensor (TS2) keeps detecting the absence of the toner for more than the specified period of time, no toner
in the toner cartridge is assumed and the message to replace the toner cartridge will be displayed. Also, if the developing unit
toner sensor (TS1) keeps detecting the absence of the toner for more than the specified period of time, no toner in the developing
unit is assumed and a "No Toner" error message will be displayed.
No.
TS2 Sub hopper toner sensor
M1 Main motor
M6 Hopper motor
M7 Bottle motor
● Toner Level Detection
Toner feed screw
Route of toner supply
Toner cartridge
M 6
M 1
[4]
[3]
Part name
Toner cartridge
Sub hopper
TS2
Toner feed screw
Developing unit
DC Controller PCB
No.
[1] Sub hopper toner sensor detection signal
[2] Bottle motor drive signal
[3] Main motor drive signal
[4] Hopper motor drive signal
Sub hopper
TS2
TS1
Developing unit
60
2. Technical Explanation
M 7
[2] [1]
Part name