Sharp AR-280 Service Manual page 39

In the case of other models
Insert two projections of the toner cartridge into the notches of the
toner supply port.
5) Move the toner cartridge in the arrow direction until it stops.
In the case of AR-501/505/507
In the case of other models
6) In the case of AR-501/505/507
Pull the lever in the direction of the arrow until it breaks off.
Then pull the lever in the direction of the arrow to remove the
seal.
Sealing tape
In the case of other models
Take off the seal end and slowly remove it.
When removing the seal, hold and fix the toner cartridge.
7) Tap the top of the toner cartridge several times.
This is to shake off toner attached to the side surface of the toner
cartridge.
8) Move the empty toner cartridge in the arrow direction and remove
it.
9) Push the toner box to the original position, and put the toner box
lever to the original position.
4 – 8 7/13/2000