Canon imagePROGRAF iPF9400S Basic Manual page 40

Replacing the Printhead
11
Pull the Printhead Fixer Cover down toward the
front to lock the Printhead in place.
12
Push the Printhead Fixer Lever toward the back of
the printer until it clicks.
13
Push the Carriage Cover down toward the front.
40
iPF9400S
Basic Guide