Canon BJC 3000 Reference Manual page 161

7
Insert the ink tank(s) in the new BJ Cartridge.
You can use new ink tanks or the ink tanks in the worn BJ Cartridge, and
install them in the new BJ Cartridge.
Install an ink tank immediately after removing it from the worn BJ Cartridge
Note
or its package. If an ink tank remains exposed for a long period, it may run
out of ink quickly after it is installed.
8
Close the front cover.
The cartridge holder returns to the home position and print head cleaning
begins automatically. Do not open the front cover during print head cleaning.
After you replace a BJ Cartridge, always align the print head.
Replacing the Ink Tanks
Aligning the Print Head
Replacing the BJ Cartridge
Routine Maintenance 161