Canon iPF840 User Manual page 584

Replacing the Printhead
Important
Note
13
Feed paper by following the instructions on the Display Screen.
After the paper has advanced, Initial adjustmt in Head Posi. Adj. is executed automatically.
584
•
While ink is being filled, definitely do not remove the Ink Tank or Maintenance Cartridge. Ink may leak
out.
•
The procedure is now finished if you have set Rep.P.head Print to Off in the Control Panel menu.
In this case, execute Initial adjustmt in Head Posi. Adj. in the Control Panel menu.
(See "Adjustment When Installing the Printhead.")
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iPF840
User's Guide