How to fix low darkness or faded copy problem? How to increase darkness? Ricoh MP 2554, low toner.

After replace drum & Developer, but not increasing darkness? The life of drum is not over but darkness is decreasing? You can fix lite copy problem like this video. Supported models: Ricoh MP 2554 to MP 6054 Ricoh MP 2555 to MP 6055 Ricoh IM 2500 to IM 6000 #ricoh #photocopy #machine #how #to #fix #lite #copy #print #problem #light #copy