If A Power Failure Occurs - Canon imageCLASS MF4690 Operation Manual

If a Power Failure Occurs

If power is suddenly lost due to an outage or accidental unplugging, a built-in battery
retains the user data settings and the speed dialing settings. Any sent or received
documents stored in memory are backed up for about 30 minutes.
During a power cut, functions are limited as follows:
– You cannot send, receive, copy, scan, or print documents.
– You may not be able to make telephone calls using an external telephone, depending on
the type of telephone you use.
– You can receive telephone calls using an external telephone depending on the type of
telephone you use.
To fully charge the built-in battery, it takes approximately 12 hours when the main power switch is on. If the
built-in battery is not fully charged, the data may not be saved properly.
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