Canon imageRUNNER ADVANCE DX C7780i Foire Aux Questions page 30

If you are using an optical line or IP
telephone line
Communication errors may occur depending on
the line quality.
For more information, contact your telephone
carrier.
Reduce the fax transmission
speed.
Reducing the fax transmission
speed may result in a
communication error reduction.
1. Press
2. Press [Function Settings] [Send]
[Fax Settings].
3.
Press [TX Start Speed].
4.
Select a slower speed than the current
one.
5. Press
P O I N T
You can also set the transmission
speed for each destination from the
preferences for the address book or
one-touch buttons.
For more information
30
User's Guide
If You Cannot Receive Faxes
1
Solution
Delete unnecessary documents in the
memory to increase the free space.
1. Press
2.
Press [Fax/I-Fax Inbox] [Memory RX Inbox]
[Memory RX Inbox].
3. Select unnecessary
documents.
4. Press
5. Press [Yes].
2
Solution
Find the remedy using the number
that follows the letter "#."
If sending or receiving of a fax fails, a
number following "#" (error code) is
displayed on the touch panel display or in
the communication management report.
You can find the remedy using the error
code.
Countermeasures for Each Error Code
User's Guide
0YRY-0JW
How to use the search number
Search
P.47