Cannot Access Remote UI

If the message [Cannot access Remote UI.] or [Cannot continue the settings because the function to perform settings for the device is restricted.] appears and you cannot access Remote UI, troubleshoot by checking the items below.
Set the Remote UI Access PIN.
To access the Remote UI, you must set the Remote UI Access PIN.
Administrator privileges are required to configure the setting.
Touch Panel Model
[Home] screen on the operation panel [Menu] [Management Settings]  [Remote UI Settings/Update Firmware] [Remote UI Settings] [Remote UI Access Security Settings] [On] enter the PIN [Apply] enter the PIN again [Apply]
5 Lines LCD Model
[Home] screen on the operation panel  [Menu]    [Management Settings]    [Remote UI Settings/Update Firmware]    [Remote UI Settings]    [Remote UI Access Security Settings]    [On]    enter the PIN    enter the PIN again  
* You cannot set a PIN consisting of all zeros, such as "00" or "0000000."
Change the System Manager PIN.
When logging in with System Manager Mode, you must change the System Manager PIN from the default settings.
Administrator privileges are required to change the settings.
Touch Panel Model
[Home] screen on the operation panel [Menu] [Management Settings] [User Management] [System Manager Information Settings] [System Manager ID and PIN] enter the System Manager ID [Apply] enter the PIN [Apply] enter the PIN again [Apply]
5 Lines LCD Model
[Home] screen on the operation panel  [Menu]    [Management Settings]    [User Management]    [System Manager Information Settings]    [System Manager ID and PIN]    enter the System Manager ID    enter the PIN    enter the PIN again  
* You cannot set a System Manager ID or PIN consisting of all zeros, such as "00" or "0000000."
* Only allow certain administrators to have access to the System Manager ID and PIN after the settings are changed.
94WS-0H8