Here are more details about these operation mode levels.

  • STR mode. Suspend-to-RAM mode. The power supplied to the CPU, adjacent chips, and the clock on the controller board is shut down.
  • Engine Off mode. The fusing lamps and other engine components remain off. The operation panel backlight is off, but there is power supplied to the operation panel and the controller boards.
  • Pre-recovery mode. The operation panel and HDD are on but the engine components remain off (Energy Save mode). However, the operation backlight still remains off, so there is no change on the operation panel to indicate that the machine has shifted from STR mode, through Engine Off mode, and into the Pre-recovery mode.
  • Quiet mode. Fusing lamps still remain off, but the HDD and SD cards are accessible, so the machine can receive jobs (Data In) and incoming faxes.
  • Lower Power mode. Finally, power is restored to the fusing lamps but maintained at a low temperature.
  • Standby mode. The machine is ready to operate.