the simple Reset Code waste ink counter for Canon Multipass F20:
- Enter SERVICE MODE. By pressing Menu, Copy, Scan, Copy, Copy
- Select TEST MODE using the + or - buttons.
- Select [8] PRINTER TEST in TEST MODE (using the + or - buttons) and press SET. Please Wait
- Select 8 - 3 using + or - keys and press SET.
- Display shows [0] INK COUNT , Press SET
Once Please Wait disappears, press STIOP/RESET, then the On/Off button to exit Service Mode.
good luck and enjoy