• Code: 016-404
• Description: Certificate DB Error Cause: Certificate DB access error.
• Remedy: The Certificate DB is invalid. Initialize the Certificate DB and security setting and then restart the printer.

• Code: 016-405
• Description: Certificate DB Error Cause: Invalid security setting error.
• Remedy: Initialize the Certificate DB and security setting and then restart the printer. Contact the administrator for security resetting.

• Code: 016-500
• Description: Download Delete Error Cause: Flash delete error in download.
• Remedy: 1. Turn the power Off and On to check that the error recurs. 2. Update to the latest F/W. 3. If the problem cannot be solved, replace (ESS PWB).

• Code: 016-501
• Description: Download Write Error Cause: Flash write error in download.
• Remedy: 1. Turn the power Off and On to check that the error recurs. 2. Update to the latest F/W. 3. If the problem cannot be solved, replace (ESS PWB).

• Code: 016-502
• Description: Download Verify Error Cause: Flash verify error in download.
• Remedy: 1. Turn the power Off and On to check that the error recurs. 2. Update to the latest F/W. 3. If the problem cannot be solved, replace (ESS PWB).

• Code: 016-503
• Description: SMTP Server Address Resolution Fail for Maillib Cause: SMTP server name resolution for email send failed.
• Remedy: The machine will recover after the OK or Close button is pressed or message is displayed for specified time. If the error persists: 1. On the CWIS, check SMTP server is set correctly. In addition, check if DNS server is set correctly. 2. Ensure that the error is replicated after the printer is powered Off and then On, and then replace (ESS PWB).

• Code: 016-504
• Description: POP Server Address Resolution Fail for Maillib Cause: POP3 server name resolution for email send failed.
• Remedy: The machine will recover after the OK or Close button is pressed or message is displayed for specified time. If the error persists: 1. On the CWIS, check POP3 server is set correctly. In addition, check if DNS server is set correctly. 2. Ensure that the error is replicated after the printer is powered Off and then On, and then replace (ESS PWB).

• Code: 016-505
• Description: POP Authentication Fail for Maillib Cause: Cannot login to POP3 server to send email.
• Remedy: The machine will recover after the OK or Close button is pressed or message is displayed for specified time. If the error persists: 1. On CWIS, check if user name and password used for POP3 server are set correctly. In addition, check if DNS server is set correctly. 2. Ensure that the error is replicated after the printer is powered Off and then On, and then replace (ESS PWB).