Checking/Deleting a Key and Certificate

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You can display the details of registered keys and certificates and check how they are currently being used. Delete any unnecessary files including those that are corrupted or marked as invalid.

  1. Press (Main Menu).
  1. Press the right Any key to select <Additional Func.>.
  1. Use [], [] or (Scroll Wheel) to select <System Management Set.>, then press [OK].

If the screen appears prompting you to enter the System Manager ID and System Password, enter the System Manager ID and System Password using - (numeric keys), then press (Log In/Out).

  1. Use [], [] or (Scroll Wheel) to select <Network Settings>, then press [OK].
  1. Confirm that a screen shown left appears on the display, then press the right Any key to select <Done>.
  1. Use [], [] or (Scroll Wheel) to select <TCP/IP Settings>, then press [OK].
  1. Use [], [] or (Scroll Wheel) to select <Certificate Settings>, then press [OK].
  1. Use [], [] or (Scroll Wheel) to select <Key and Certificate List>, then press [OK].
  1. Check or delete the desired keys and certificates.
  • If (invalid) is displayed to the left of a key pair, it may be invalid or corrupted. After deleting the invalid or corrupted file, register a new key and certificate. (See "Registering a Key and Certificate.")

  • If you want to display the details of a certificate:

  • 1. Use [], [] or (Scroll Wheel) to select the key and certificate you want to check, then press the left Any key to select <Menu>.

  • 2. Use [], [] or (Scroll Wheel) to select <Certificate Details>, then press [OK].

  • 3. Use [], [] or (Scroll Wheel) to scroll through the certificate details.
  • If you want to check the complete information of the listing, press the right Any key to select <Display All>.
  • If you press the left Any key to select <Cert. Verif.>, the machine checks for errors in the certificate.

  • If you want to check what a key pair is being used for:

  • 1. Use [], [] or (Scroll Wheel) to select the key and certificate with indicated under <Use>, then press the left Any key to select <Menu>.

  • 2. Use [], [] or (Scroll Wheel) to select <Display Use Location>, then press [OK].

The Display Use Location screen is displayed.


  • If you want to delete a registered key and certificate:

  • 1. Use [], [] or (Scroll Wheel) to select the key and certificate you want to erase, then press the left Any key to select <Menu>.
  • A key pair file cannot be deleted if is indicated under <Use> in the list.

  • 2. Use [], [] or (Scroll Wheel) to select <Erase>, then press [OK].

  • 3. Use [], [] or (Scroll Wheel) to select <Yes>, then press [OK].

If you want to cancel the operation, select <No>.


  • 4. Press (Main Menu) to return to the Main Menu screen.

  • 5. Restart the machine.

Turn OFF the machine and wait at least 10 seconds before turning it ON again.