SOURCE: Canon MP780 print head won''t move automatically
THis may be a stupid suggestion but normally, you must open some housing part to force it to center for service or cartridge replacement and the closure of the same access part causes the carriage to return to its hiding place.
With the power on, gently push against the carriage in either direction. If it doesn't fight with you, the belt may be either off a pulley or torn.
The 6A00 is a Canon generic code for paper path jam. Somewhere in the paper path a sensor is activated indicating paper jam so the printer will give off a 6A00 code. I usually find the code, almost 90% of the time, is related to the purge unit being jammed with something and not being able to move. Moving the print head assembly will not clear a purge unit if it is jammed with paper, paper clips, push pins, screws, cookie crisp, flower bud pods or the like. And yes I have found all those things in a purge unit. The offending item needs to be removed or the purge unit needs Incidentally, the 6A00 error pertains to all Canon printers made in the last several years; it is not just used in one model. And it is always a paper path error or purge unit.
I forget myself so here goes, the purge unit, called a spittoon assembly in an HP, Lexmark, and other inkjet printers, is where the print head assembly parks when not in use, also its other job is to clean and make sure the print head is clean and open for printing. That is why you'll find the print head assembly parked on top of it. It also has an electrical pump to milk the print heads and test for ink flow. Move back and forth several times (with the power off)
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309
Note
Be careful to not force the print head to move.
If the print head
is positioned at the far right hand side, you cannot move it. Please
contact Brother Customer Service from "Contact Us".
Note
Use a flashlight if necessary to check thoroughly.
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