Canon iR2270 Series, Service Manual

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Chapter 10
10-17
of the all-night power supply PCB is likely to have blown.)
For other cases than above, the protection circuit can be reset by turning off the main power switch of the printer unit,
removing the cause triggering the protection circuit, leaving the printer unit alone for more than 3 min, and tuning
on the power again.
10.4.4 Backup Battery
10.4.4.1 Backup Battery
0008-0861
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
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.
T-10-12
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
0006-5741
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
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
Controller PCB manganese dioxide lithium battery (3 V, 1000 mAh)
DC controller PCB lithium battery (3 V, 600 mAh)
Life DC controller PCB: 7 yr or less
Controller PCB: 8.8 yr or more
(with the power plug disconnected)
Replacement The batteries cannot be replaced on their own in the
field.