2-42 Phaser 6121MFP Service Manual
Theory of Operation
Depending on the state of the system, the process control mechanisms are
activated. Factors for each state are listed in the following table.
Mode Process Control Criteria
Mode 1 ■ When the Power Switch is turned On, the current environmental
readings are different from when the Power Switch was turned
Off.
■ The stored environmental readings taken when Energy Saver
mode was entered differ from those taken when the system woke
from Energy Saver mode.
■ The Power Switch is turned Off and On or Energy Saver mode is
canceled after a predetermined number of printed pages have
been produced.
■ A new Imaging Unit or Toner Cartridge is detected.
Mode 2 The Power Switch is turned Off and On, or Energy Saver mode is
canceled after a predetermined number of printed pages have
been produced.
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