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Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.5.4.5 Other questions (C330dn/C530dn only)
Other possible questions are described below.
7.5.4.5.1 Time required for creation of a certificate
It takes several tens of seconds to create a certificate.
7.5.4.5.2 Communication time when the encryption function is
enabled
When the encryption function is being used, communication time takes longer than usual.
7.5.4.5.3 Can encrypted printing be performed without IPP?
Answer: Encrypted printing is not available without IPP.
Encryption can be performed only in IPP printing.
7.5.4.5.4 What will happen if SSL/TLS is set to OFF after a
certificate is created (or installed)?
Answer: A certificate will be remained saved as it is.
If SSL/TLS is set to ON again, the certificate becomes available.
7.5.4.5.5 How to change the port number
nswer: The port number for SSL/TLS communication is fixed to 443.
It cannot be changed.
7.5.4.5.6 The error message “The security certificate was issued
by a company you have not chosen to trust. View the
certificate to determine whether you want to trust the
certifying authority” is displayed.
When this error message appears, it means that the certificate installed in the printer is
self-signed certificate. Other possibilities are that the certificated installed in the printer is a
certificated of a certifying authority, and also either a CA certificate of the certifying authority
or an intermediate certificate has not been installed in the client PC.
If the certificate is a self-signed certificate, the error message (security warning) doesn’t
appear after the self-signed certificate of the printer is installed in the client PC.
If the installed in the printer is a certificate of a certifying authority, the error message (security
warning) doesn’t appear after the CA certificate or the intermediate certificate of the certifying
authority is installed in the client PC.
Solution: Install such certificates in the client PC (browser).
[Steps]
1. Click the View Certificate button on the error (security warning) screen.