• Before servicing the machine turn it off and disconnect it from its power source.
  • Always wait at least 10 minutes for residual charge on the PSU boards and the AC drive board to disperse before removing the rear cover of the machine.
  • Residual charge can remain in the condensers of the PSU boards, even after the machine has been switched off and disconnected from its power source.
  • When working around the PSU or AC drive boards with the back cover off the machine, take extra precautions to avoid the danger of electrical shock.
  • Avoid touching the PSU or AC drive boards with your bare hands or metal tools.

  • To prevent damage to the ITB, drum, or development unit when removing them or putting them back into the machine, never switch off the main power switch or operation power switch while the machine is operating.