AGFA 2100 - Manual (Page 163)

To replace the EP-S cartridge, follow the instructions that come with the
cartridge or use the following procedure.
1. Be sure the printer is not printing and the display reads 00 READY.
2. Press the power switch on the back of the printer to the O (OFF)
position.
Fig 7-26, MLO-004829
Maintenance 7–21