Hello, I have been reading the answers to the problem with the brother mfc printing fine, but copying is dark or streaky. I cleaned the drum, which only has 2500 copies on it. That didn't seem to help, so my next step is to try and clean the optical mirrors? But where are they and how do I get to them?
if it is only copying that has problems, clean your scanner glass. particularly the ADF scanner glass. You shouldn't clean drums, you will only risk damaging them. It may also be the cleaning section of the drum or charge section that is causing your issue. so probably best to change the drum unit.