Hi, this is Michelle and i will be assisting you
The error code 6A00 indicates an issue with the purge unit.This usually requires a repair\service of the unit.
However, you may try the below steps:
1. Please open the printer cover and when the carriage head moves to center pull out the power cord.2. The Purge unit is on the right side. Use a flashlight and you will see two ink pads. This is where the print-head is PARKED and is the top of the Purge unit. 3. There you will find wiper blades that move from the rear to the front. They wipe the bottom of the print-head when it is parked.
Use some rubber gloves and a paper towel and see if you can press the ink pads down just a little bit - about 1/4". See if for some reason the wiper blade is stuck extended, if so see if you can get it unstuck. Please do this gently such that you don't break anything there.
now remove the cartridge...manually slide the carriage assembly\ printhead back and forthalso clean the rail against which the assembly slides with a tissue ensuring that there is no ink residue on itclean the golden contacts of the cartridges and the printhead with a cotton swab dipped in little alcoholonce these steps have been done follow the below steps as wellmanually move the printhead to far lefton the far right there is a little white plastic tab that is spring loadedjust check that if its not getting jammedpush the tab towards the front of the printeronce done just turn on and check the status
in case still the issue persists and you get the same error code, then it is an issue with the purge unit.. if the unit is within warranty cover please contact Canon and get the unit serviced...if not, you need to contact a repair tech for physical replacement of the part..however, my personal suggestion is that a repair will not be cost effective
you can get a new unit at almost the same or little more cost
let me know if you have any further queries
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