As explained I don't have any alcohol or proper cleaners. All I have tried is cotton buds and water. I am scared that with my tampering if I could now have damaged something else because when error first presented itself, the ink tray was still lit and would move out by itself as it should when the cover was lifted but since trying various recommendations found on line it doesn't do this any more.
.Unfortunately then we can already rule out the print head, I really hate to tell you this but in order to fix this you would need to replace the logic board. It is similar to a motherboard in a computer and is what allows all the parts to work and communicate inside the machine. If it were just the print head it would not have stopped the carriage from moving.I understand you have been going to other websites that may have said it was the print head but here is the service manual so you can confirm what I have told you: Click Here (page 6 under 2-2) If you were to replace the print head you would be stuck with the same error, it can also be the carriage unit but that is unlikely since it was working while you already had the error though both parts (board and carriage unit) do often fail at the same time.The part number is ***** 3438 000, you can get it from here: Click Here Due to the price some people do decide to replace the machine if it is more than a year old if you decide to go that route I would be happy to help you find a replacement.If this machine is under a year old Canon will normally cover the part under warranty. If you have any questions or need any help following these steps click on reply to expert and let me know. If not please consider leaving a positive rating for my help it is greatly appreciated..