Canon imageCLASS MF735Cdw - Page 663

The authentication server certicate is incorrect.
There is no CA certicate registered in the printer that is compatible with the authentication server
certicate.
● Check that there is a CA certicate registered in the printer that is compatible with the authentication
server certicate.
Conguring IEEE 802.1X Authentication Settings(P. 398)
The computer is restricted.
Scanning that is operated on the operation panel is disabled in the Department ID Management.
● Log in to the Remote UI in System Manager Mode, display the edit screen of the corresponding
Department ID, and select the [Allow Scan Jobs with Unknown IDs] check box.
Setting the Department ID Management(P. 356)
The memory is full.
A fax could not be sent or received, or an original could not be scanned due to insucient memory
space.
● If a sending or printing job is queued, wait until the job is completed.
● If a received document is stored to memory, print or delete it.
Saving Received Documents into the Machine (Memory Reception)(P. 238)
● If sending an original with many pages, divide it into multiple sections.
● If sending a fax, reduce the resolution to scan the original.
Basic Operations for Sending Faxes(P. 217)
● If scanning, change the le format to reduce its le size.
Basic Operations for Scanning Originals(P. 284)
A scanned original could not be stored to a USB memory device due to insucient memory space.
● Delete unnecessary data to free space in the USB memory device, or connect a different USB memory
device.
Insert a USB Memory Device(P. 106)
The memory is full. Enter the original type settings again.
An original could not be scanned because memory became full during copying.
● Set <Original Type> to <Text/Photo/Map (Speed)>, and copy.
Selecting the Type of Original for Copying(P. 204)
Troubleshooting
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