Finally got round to trying that method out - replaced the cartridges with the old Canon ones and no error! I got my printer back. So relieved. Managed to narrow it down to one cartridge in particular so hoping the company will replace it as it is faulty. Have ordered another in the mean time so...
Wow thank you so much - I'll try that tonight! Just to be able to open the doors will be a bonus. I hope I have made the rookie error you're guessing at(!) At least it would be an easy fix. What kind of design is this printer? I've never known anything like it.
What a brilliant forum. I was...
I have only just bought one of these printers second hand. I (foolishly perhaps) bought pattern cartridges from a German company. The first cartridges needed changing straight away and I had no problems but then last week I needed to change two more. Ever since then I've had the B500 error...