Dell C2660dn Color Laser Printer - Manual (Page 347)

Symptom Cause Action
016-404 is displayed when trying to
use security functions that require
certificates.
The certificate data stored in
internal memory is either deleted,
corrupt, or is not readable.
Import the certificate and enable the security
settings again.
A certificate cannot be set with
"Certificate Details".
The validity period is invalid. The validity period of the certificate is invalid.
Confirm whether the time setting of the machine is
correct, and whether the validity period of the
certificate has expired.
The certificate path is invalid. The certificate chain (path validation) of the
imported certificate may not be correctly validated.
Confirm whether all of the high-level certificates
(Trusted/Intermediate) have been imported and are
not deleted, and whether the validity period has
expired.
Although a certificate was imported,
it is not displayed when selecting
with "Local Device".
The type of the certificate is
incorrect.
To import a certificate for use with the device (own
device), import the secret key and a certificate of
the PKCS#12 (p12/pfx) format as a pair.
Server validation is not operating
correctly.
The certificate chain is incorrect
when importing.
Although importing a root certificate (Trusted) to
use for server authentication, an Intermediate
certificate may be required when validating the
path.
When executing a certificate file with the
certification authority, create the certificate with a
format including all paths and then import that
certificate.
Digital Signature cannot be selected The certificate cannot be associated. Either the certificate has not been imported or the
with the IPsec setting. certificate has not been associated for use with
Digital Signature of IPsec. Refer to "Setting the
Certificate in the IPsec Digital Signature Mode" to
set a certificate of IPsec.
Troubleshooting Guide 345