15 Problem Solving
540
Problem Solving
15
021-406
[Cause] The SSL certificate of the external server is not correct.
[Remedy] Switch off the machine power, make sure that the touch screen is blank, and then switch 
on the machine power. If the error still is not resolved, contact our Customer Support 
Center.
021-407
[Cause] Failed to authorize the proxy server while connecting to the EP system via the 
Internet.(Receiving HTTP status code 407)
[Remedy] Check the followings:
The login user of the EP proxy server
The password of the EP proxy server
If the error still is not resolved after checking the above settings, there may be a network 
failure or the proxy server settings may be changed or failed. Consult your system 
administrator.
If the network works normally but the error still is not resolved, contact our Customer 
Support Center.
021-408
[Cause] A time out error occurred while connecting to the EP system via the Internet.
[Remedy] Check the followings:
LAN cable connection
DNS server address setting
The default gateway setting
The subnet mask setting
EP proxy server setting (For BB-Direct configuration)
If the error still is not resolved after checking the above settings, there may be a network 
failure or the proxy server settings may be changed or failed. Consult your system 
administrator.
If the network works normally but the error still is not resolved, contact our Customer 
Support Center.
Also, when FQDN of the EP communication aggregate server is changed for the EP 
communication aggregate server configuration, contact our Customer Support Center.
021-409
[Cause] An error occurred in the machine.
[Remedy] Switch off the machine power, make sure that the touch screen is blank, and then switch 
on the machine power. If the error still is not resolved, contact our Customer Support 
Center.
021-410
021-411
[Cause] A communication error occurred while connecting (acquiring the EP certificate) to CA 
via the Internet.
[Remedy] Check the followings:
LAN cable connection
DNS server address setting
The default gateway setting
The subnet mask setting
EP proxy server setting (For BB-Direct configuration)
If the error still is not resolved after checking the above settings, there may be a network 
failure or the proxy server settings may be changed or failed. Consult your system 
administrator.
If the network works normally but the error still is not resolved, contact our Customer 
Support Center.
Error Code Cause and Remedy