well...I don't understand what machine it is? however, if it's physically possible, try to swap the drum cylinder and the charge unit from yellow to...
Large MFPs and WSD/XPS are big No-no.
Maybe for smaller A4 USB home desktop printers they are OK but IMHO no MFP with LAN port should be using them....
as they have already suggested above, go to google and write "ricoh firmware update tools" download it, and update the machine in 10-15 minutes, this...