BT PaperJet 35 - Manual (Page 59)

7. Replace the print cartridge and push until it clicks into place.
8. Close cover and replace the handset. Reconnect the mains power.
You will need to reset the date and time.
Install a new print cartridge 59
BT PaperJet 35 UG – Issue 2 – Edition 2.1 – 17.02.05 – 6672