Oki C321 Maintenance Manual

44951501TH Rev.2
7-67
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.5.4.2 Print operation is not possible (C331/C531 only)
If print operation is not possible by using an encrypted IPP printer, check the followings.
Establish connection by https://<printer IP address>.
1) If the printer setting page is displayed, the followings are probable.
Take an appropriate measure by referring to the following sections.
* A certificate is not created yet (or creation of a certificate failed).
-> Refer to section “7.5.4.1.1 Has a certificate been created?”
* A certificate has been created but the SSL/TLS setting is set to OFF.
-> Refer to section “7.5.4.1.2 Is the SSL/TLS setting set to ON?”
2) If the printer setting page is not displayed, the followings are probable.
Take an appropriate measure by referring to the following sections.
* The version number of the browser is old.
-> Refer to section “7.5.4.1.3 Check the version number of the Web
browser.”
* Encryption strength is set to Strong.
-> Refer to section “7.5.4.1.4 Check the encryption strength of the printer.”
* The browser doesn’t support the key exchange method of the printer.
(Compatibility problem)
* The OS does not support IPP (encrypted) printing.
-> Refer to section “7.5.4.2.1 Check the OS (Operating System).”
* An IPP (encrypted) printer has not been created yet.
-> Refer to section “7.5.4.2.2 Has a printer been created?”
* IPP setup of the Printer is not Enabled.
-> Refer to section “7.5.4.2.3 Is the IPP setting set to Enable?”
7.5.4.2.1 Has a printer been created?
The printer may not have been created properly.
To use the IPP print (encryption) function, a printer must have been created by setting the
port as URL https://<printer IP address>/ipp.
For details of printer creation methods, refer to the User’s Manual (Advanced).
7.5.4.2.2 Is the IPP setting set to Enable?
The IPP setting may not be set to Enable.
As the default setting of the printer, IPP has been set to Disable.
To use the IPP print function, the IPP setting must be set to Enable.
For how to change the IPP setting, refer to the User’s Manual (Advanced).
7.5.4.3 A certificate cannot be created. (C331/C531 only)
When a certificate cannot be created, the following causes are probable.
Take an appropriate measure by referring to the following sections.
* Not all the required entry fields are filled in.
-> Refer to section “7.5.4.3.1 Not all the required entry fields are filled in.”
* The printer is printing.
-> Refer to section “7.5.4.3.2 The printer is printing.”
7.5.4.3.1 Not all the required entry fields are filled in.
If every required entry field is filled in, a certificate cannot be created.
To create a certificate, the followings must be filled in: CommonName, Organization, Locality,
State/Province, Country/Region. (Entry into Organizational Unit may be skipped.)
Solution: Enter appropriate values into all of the required entry fields, and
execute creation of a certificate. For details of the required entry fields
and how to create certificates, refer to the User’s Manual (Advanced).

Oki C321 Specifications

General

Brand	Oki
Model	C321
Category	Printer
Language	English