Overview; Energy-Saving Function - Canon iR4570 Series Service Manual

Chapter 10
The controller PCB and the DC controller PCB are equipped with a lithium battery (1 pc. each) to serve as a source
of power, backing up various data in the even of power failure.
Controller PCB
DC controller PCB
Life
Replacement
Be sure to exercise care whenever you have to replace the battery. In certain cases, it may explode.
Do not use a battery which is not of a type specifically indicated (same name, or equivalent).
Dispose of any used battery according to the instructions of its manufacturer.

10.4.5 Energy-Saving Function

10.4.5.1 Overview

iR2270 / iR2870 / iR3570 / iR4570
1. Standby Mode
When the machine is in standby mode, all its power supplies are provided with power, and the machine is ready for
immediate operation.
2. Sleep Mode
2-1. Sleep 1
When the machine is in sleep mode 1, its control panel remains off, and the polygon motor (M1) will not rotate even
when any of the control panel keys is pressed. In this mode, the machine is provided with power as in standby mode.
2-2. Sleep 3
When the machine is in sleep mode 3, only 3 VB is available. The machine will move to standby mode from sleep 3
in response to any of the following:
- print job
- press on the control panel power switch
- incoming fax
The following shows the sections of the machine that are provided with power in sleep 3:
10-14
T-10-11
manganese dioxide lithium battery (3 V, 1000 mAh)
lithium battery (3 V, 600 mAh)
DC controller PCB: 7 yr or less
Controller PCB: 8.8 yr or more
(with the power plug disconnected)
The batteries cannot be replaced on their own in the
field.
0006-5741