To resolve the subject issue, I was able to find, remove and clean the pads by swishing them in soapy water. See the attached photos.
The pads are very tiny.
I had to use tweezers. Be sure to wear nitrile gloves and have paper towel or rags available.
I used basic dishwashing liquid and rinsed...
I had a rough time cleaning the pads but wearing nitrile gloves and using a pair of tweezers I had success. I just need to perform the counter reset now. Your later reply gives me hope.
Thank you for the info. I'm trying to do the reset after cleaning the ink pads. However, my antivirus software doesn't like the link you gave to the service manual.
("The service manual for the MX880 series printers which you have already got is one of the best and most detailed Canon service...