Canon IPF 8300s won't read Ink Cartridge
Photo Gray ran out, replaced it, the red light that indicates that you've loaded the cartridge doesn't light up. Thought it was a bad chip on the Gray, so I got a different one.... won't light up, won't acknowledge that I replaced the cartridge. Yes, I placed it in firmly, I've loaded cartridges in this thing hundreds of times. Nothing is different.
I don't have any specific knowledge about the Canon IPF8300, but one thought crossed my mind:
Was the cartridge you removed really empty or was it just shown to be empty by the software? You could weigh the cartridge and compare it to a known empty cartridge to determine if it is really empty. This would give you some insight into where the problem might be.
I hope someone with knowledge of the IPF6300 will chime in.