and Adjustment 
4.8  PCDU SECTION 
 
  Unplug the machine power cord before starting the following procedures. 
4.8.1  BEFORE REPLACING A PCU OR DEVELOPMENT UNIT 
 
  To prevent damage from toner spillage during the PCDU removal, be sure to place a 
ground cloth on the floor. 
  To prevent damage from excessive light, wrap the OPC drum with protective paper and 
store the OPC drum in a cool dark place.   
  Do not touch the OPC drum, cleaning blade, or any seals or tapes. 
  Do not use any alcohols or solvents to clean the OPC drum; Be sure to wipe with a dry 
cloth. If excessive dirt exists, first wipe with a damp cloth, and next wipe off completely 
with a dry cloth.   
  Do not rotate the OPC drum clockwise after the PCDU has been installed.