tom dimmock asked ... How can i mend the lid on russell hobbs elec?    |    Jerry asked ... Alpine 7287?    |    Guy asked ... Gaggenau fridge alarm problem?    |    mike asked ... Fisher & Paykel 913t dishwasher?    |    Emma asked ... Foot pedal smoking?    |    Click here to ask your question

Error message cover open after changing cartridge?

I replaced cartridges and alarm light is on and message is cover open. I unplugged the printer with cover open and closed, turned it on and off. when I press a button message is invalid key.
Can you please assist?
Barbara Heller, August 2012