Canon L380S User Manual page 158

Message
SYSTEM ERROR
Exxx*
TX/RX NO. nnnn**
* xxx stands for a number.
** The identification number does not appear in the standby mode. It appears when scanning documents, operating
[System Monitor], receiving faxes in Manual mode or memory, or after transmission is completed.
14
14-10 LCD Messages
Cause
An error of some kind has occurred
in the machine.
When the machine sends or receives a
fax, it assigns a unique identification
number (nnnn).
Action
Unplug the machine from the power
supply and wait for approx. 3 minutes to 5
minutes, then plug it in again. If this does
not solve the problem, unplug the
machine and call your service
representative.
Write down the number for future
reference.