What to do if my Oki MC563 All in One Printer is unable to send a fax?
- Mmichael77Aug 25, 2025
If your Oki All in One Printer is unable to send a fax, first, double-check that you are following the correct sending procedure. Verify that you have entered the correct fax number. If using speed dial, print the list to confirm the number's accuracy. Ensure you've selected the appropriate dial type for your region. Check with the recipient to ensure their machine is ready to receive. If the Transmit/Receipt Journal shows error code [23], adjust the [MF(Tone)/DP(Pulse)] setting in [Admin Setup] > [User Install] to match your environment. If error code [26] appears, modify the [PBX Line] setting under [Admin Setup] > [Fax Setup] > [Fax Setting].










