Canon imagePROGRAF PRO-6600 Online Manual page 433

Make sure the fingerprint of certificate shown on Details corresponds with the root certificate thumbprint
of the printer.
To display the printer's root certificate thumbprint in Root cert. thumbprint (SHA-1) or Root cert.
thumbprint (SHA-256), select
and then select System information.
7. 7. Select Always Trust.
If the fingerprint of certificate detail information matches printer's thumbprint, display information on
certificate from the menu or by double-clicking the certificate, and select Always Trust on Trust.
The root certificate has been registered.
Note
• Entering the password may be required if you specify it for your printer.
Printer information on the HOME screen of the operation panel,
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