HP A10 Printing Mailbox - Manual (Page 16)

Using the HP A10 Printing Mailbox 16
Removing and Replacing the Print Cartridge
The Ink light turns on when the estimated ink level of the print cartridge
is getting low * . HP recommends you have a replacement available to
install when print quality is no longer acceptable.
Replace the print cartridge using the instructions below.
Use either the HP 95 Tri-color Inkjet Print Cartridge (part number
C8766W) or the HP 97 Tri-color Inkjet Print Cartridge (C9363W) in
the HP A10 Printing Mailbox.
NOTE: The Printing Mailbox must be connected to power before you
can replace the print cartridge. Check that the Ready light at the right
corner of the Printing Mailbox is lit before changing the print
cartridge.
* Using genuine HP supplies ensures availability of this feature.