Canon ImageRunner 2545i Reference Manual page 181

The platen glass is dirty.
Cause
Remedy
There are too many subdirectories.
Cause
Remedy
The send function currently cannot be used. Confirm with administrator.
Cause
Remedy
6
Transmission has been suspended. Contact system manager.
Cause 1
Remedy 1 Deselect [Specify LDAP authentication user address as the sender name]. (See
Remedy 2 Make sure that an e-mail address attribute is registered on an authentication
Cause 2
Remedy
6-14
Self-diagnostic Display
The feeder scanning area is dirty.
Clean the feeder scanning area. (See "Feeder Scanning Area and Rollers," on
p. 5-31.)
You have exceeded the maximum number of subdirectory levels allowed.
The directory level that you are trying to access cannot be specified. Specify a
different destination.
All the sending functionalities are disabled.
Check the following settings:
• <Send Restriction Settings> on the Send Function Authentication Settings
page (See Chapter 4, "Customizing Settings," in the Remote UI Guide.)
• Use Scan to Memory Media in Memory Media Settings (See Chapter 4,
"Setting the Send Function," in the System Settings Guide.)
Although [Specify LDAP authentication user address as the sender name] is
selected, the machine cannot obtain an e-mail address attribute from an
authentication server.
Chapter 4, "Customizing Settings," in the Remote UI Guide.)
server.
You tried to send e-mails or I-faxes when the machine is in the User ID
Management with the e-mail address of the login user not registered.
Register the e-mail address for each user when User ID Management is
enabled. (See Chapter 3, "Specifying Department ID and User Management," in
the Remote UI Guide.)