Controlling The Power Supply; Outline; Power Supply Mode; Standby Mode (Normal Operation) - Canon Image Reader-A1 iR5000i Service Manual

CHAPTER 2 MAIN CONTROLLER

5. Controlling the Power Supply

5.1 Outline

The main controller PCB controls the following five power modes, in addition to the
mode it controls at when the main power switch is turned off (power-off mode):
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standby mode (normal operation)

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power save mode

• low-power mode
• sleep mode
• off mode

5.2 Power Supply Mode

The machine possesses the following five modes for each of its power supplies: +3.3V
all-night (3.3 VB), +3.3 V non-all night (3.3 VA), +5 V non all-night (5 V), +24 V.
Mode +3.3V all night
Standby
Power save
Low power
Sleep
Off mode
Power off
5.3 Standby Mode (normal operation)
Standby mode is used during normal operation or while the machine is ready for opera-
tion, i.e., nearly all its power supplies are powered.
In addition to the main controller PCB, the reader unit, printer unit, and control panel are
all ready for communication/control.
5.4 Power Save Mode
All power supplies are powered (same as standby mode).
The level of power consumption is reduced by lowering the control temperature of the
fixing assembly in standby state.
2-24 S
+3.3V non-all night
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T02-502-01
COPYRIGHT © 2001 CANON INC.
+5V non-all night
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2000 2000 2000 2000
+24V
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CANON iR5000i/iR6000i REV.0 JUNE 2001
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