If the transmission stamp becomes faint, replace the cartridge.
This stamp cartridge is used for facsimile and scanner functions.
Do not add ink to the cartridge by yourself. Neglecting this can cause ink leakage.
Be sure not to dirty your fingers with ink from the cartridge.
Use the cartridge specified for this machine.
Open the ADF cover.
Open the stamp cover.
Pull out the old stamp cartridge.
Tap the cartridge lock lever several times. The cartridge will eject. Then remove the cartridge, while pushing the lock lever.
Insert the new stamp cartridge.
Insert the cartridge until the metal parts are no longer visible.
Press the stamp cover back in until it clicks.
Close the ADF cover.