Canon imageCLASS MF4140 Basic Manual page 131

Message
SYSTEM ERROR
EXXX
TONER IS NOT SET
INSERT TONER
WRONG NUMBER ENTRY*
11-15
Description
A system error has occurred.
<XXX> will be a three-digit
code that indicates a
particular type of error.
A toner cartridge is not
installed or not installed
correctly.
An invalid number was
entered in the <DATE&TIME
SETTING> of the <TIMER
SETTINGS> menu.
Action
Turn off the main power
switch. Wait for at least five
seconds, and then turn it on
again. If the message
persists, contact your local
authorized Canon dealer or
the Canon help line.
Install the toner cartridge
correctly. (See "Replacing
the Toner Cartridge," on
p. 10-8.)
Enter a correct date or time.