brother printer boot problem "print unable 0b"

[sabdany]

hi all, I have mfc-l3750cdw model and trying to fix some color stains, I cleaned as instructed the ink drums carefully with alcohol. however since that clean printer does not boot and showing error "print unable 0b". searching the web I realized this is some power short issue, I tried to dry everything for hours.. also slided the green bar of all drums in order to clean string in the drum... nothing helped.. any solutions? should I disassemble the drum and clean it better? I could not find a video to show how to do that.. or perhap someone has a solution I will be thankful, this will avoid me from purchasing a new printer :/ thanks