Brother Multifunction Printer MFC-J980DN with Sub-Handset, Power OK, Printing Operation Unconfirmed

Brother inkjet printer multifunction device with telephone function.
Model number: MFC-J980DN
All accessories are included except for the white cord shown in the first photo.

Initialized, operation not confirmed. Both the main unit and the handset power on without issue.
The monitor screen has noticeable dirt, but touch operations responded without problems.
There is no ink, so printout and copy functions could not be confirmed. It has been stored in a storage room for a long time, so it is being sold as a junk item. Please consider purchasing only if you understand this condition.