Controlling The Power Supply; Outline; Power Supply Mode; Standby Mode (Normal Operation) - Canon iR8500 Service Manual

CHAPTER 3 MAIN CONTROLLER

4 Controlling the Power Supply

4.1 Outline

The main controller PCB has the following power supply mode, in addition to the mode
turned on or off by the main power switch (power supply off mode):

• Standby mode (normal operation)

• Power save mode

• Lower power mode
• Sleep mode
• Off mode

4.2 Power Supply Mode

The machine has the following five modes for +3.3 V all-night (3.3 VB), +3.3 V non-all
night (3.3 VA), +5 V non-all night (5 V), and +24 V:
Mode
Standby
Power save
Low power
Sleep
Off
Power supply off
4.3 Standby Mode (normal operation)
In standby, mode, the machine is in operation or is ready to start normal operation; in this
sense, almost all components of the machine are supplied with power.
Not only the main controller PCB, but also the reader unit, printer unit, and control panel
are all supplied with power and ready for communication and control.
4.4 Power Save Mode
All components are supplied with power (i.e., the same as in standby mode). Depending
on the selected rate of saving, the control temperature of the fixing assembly is lowered to
reduce the power consumption.
3-14
+3.3 V all night +3.3 V non-all night
T03-402-01
COPYRIGHT© 2001 CANON INC.
+5 V all night
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
+24 V