Fax sp100sf,fax receving in memory only

[nashua]

Hi Friends, Wanna can anyone help Sp 1000 sf nashuatec fax receving in memory only.After cartridge not fully empty it upto 20% remain.But i change from setup to print until last toner.I changed toner cartridge also from other running m/c without smart card authentication.
Is any other setup or any other theory to apply.

Thanks