MP780 User Guide reqd. Unable to navigate properly through menu system to reset settings. Or - ability to reset printer to factory defaults.

Okidata B710 and B720 Maintenance Reqd. Reset Procedure
To enter the Diagnostics area:
Turn the printer power OFF.
Press and Hold the MENU^ and Enter buttons.
Turn the printer power ON (you can release these buttons as soon as "loading ... '' is displayed.
The Operator Panel reads "Diagnostics"
There is a list of Test Options and settings.
Press the Down Arrow highlight "Maintenance Info." Press the Enter button
The Operator Panel Display reads "Maintenance Info" with setting listed.
Reset Maintenance reqd. is highlighted. Press Enter
Reset Maint. Reqd. is displayed and Execute is highlighted.
Press Enter.
The Display reads - Resetting Maintenance Required.
This completes the process.

Restore factory default settings
When you restore the factory default settings, all personal settings are reset. Follow these instructions to restore the factory default settings.
All phone data will be deleted. Data on your SIM isn't deleted.

1. Find "Security Wipe"
Press the Menu key twice.
Scroll to Options and press the Navigation key.
Scroll to Security and press the Navigation key.
Scroll to Security Wipe and press the Navigation key.
2. Restore factory default settings
Highlight Emails, Contacts, etc., User Installed Applications or Media Card and press the Navigation key.
When the box next to the menu item is ticked (V), the selected data will be deleted.
Highlight the field at the bottom of the display and key in blackberry
Scroll to Wipe and press the Navigation key to restore the factory default settings.
Follow the instructions on the display

Hello, first you go to the start menu and there you go to the control panel, the recovery function key.

1. Find "Security Wipe"

• Press the Menu key twice.
• Scroll to Options and press the Navigation key.
• Scroll to Security and press the Navigation key.
• Scroll to Security Wipe and press the Navigation key.

2. Restore factory default settings

• Highlight Emails, Contacts, etc., User Installed Applications or Media Card and press the Navigation key.
• When the box next to the menu item is ticked (V), the selected data will be deleted.
• Highlight the field at the bottom of the display and key in blackberry
• Scroll to Wipe and press the Navigation key to restore the factory default settings.
• Follow the instructions on the display to set up your phone and prepare it for use.

If you wish to reset the print server back to its default factory settings (resetting all information such as the password and IP address information), please follow these steps. Before you factory reset the print server, we recommend that you print a configuration page before resetting the print server.
<For BRAdmin Professional ver.2.xx Users>
Start the BRAdmin Professional utility, by clicking Start => All Programs or Programs => Brother Administrator Utilities => Brother BRAdmin Professional Utilities => BRAdmin Professional.

1. From the main BRAdmin screen double click the appropriate printer.
2. Enter the print server password (The default password is "access").
3. Click the Control tab
4. Click the Restore Factory Defaults button
5. Click the OK button when you have read the warning message.
6. The print server will then reset back to its default values.

<For BRAdmin Professional ver.3.xx Users>

1. Start the BRAdmin Professional utility, by clicking Start => All Programs or Programs => Brother Administrator Utilities => Brother BRAdmin Professional 3 => BRAdmin Professional 3.
2. From the main BRAdmin screen double click the appropriate machine.
3. Enter the print server password (The default password is "access").
4. Click Network Configuration tab, Control Panel and select Set Default.
5. Click on Submit button.
6. The print server will then reset back to its default values.
   
   
   

Via a web browser
Because web based management requires the TCP/IP protocol for communication, any reset option you see when managing the machine with a web browser, will not reset the IP address details that are set. If you wish to totally reset all the print server parameters we recommend you reset the print server by using the BRAdmin application.
To reset the print server (excluding TCP/IP parameters) follow these steps:

1. Connect to the printer using a web browser.
2. Click Network Configuration.
3. Enter the print server password (the print server password is detailed in the user guide for the print server) if it's applicable.
4. Click the Set Default link or Reset Print Server.

Via the control panel (only for network ready models)

1. Make sure the machine is not operating, then disconnect all the cables from the machine (except power cable).
2. Press the Menu or Menu/Set key on the control panel.
3. Press up or down navigation key to select LAN or Network and press Set, Menu/Set or OK.
4. Press up or down navigation key to select Factory Reset or Network Reset and press Set, Menu/Set or OK.
5. Select Reset.
6. Select Yes.
7. The machine will re-start, re-connect cables once this is complete.

Have you tried a battery pull...... restart by removing the battery while your device is Powered On , try it and see if you're able to access your keyboard . you can try factory default to reset phone ...When you restore the factory default settings, all personal settings are reset. Follow these instructions to restore the factory default settings.
All phone data will be deleted. Data on your SIM isn't deleted.

1. Find "Security Wipe"

• Press the Menu key twice.
• Scroll to Options and press the Navigation key.
• Scroll to Security and press the Navigation key.
• Scroll to Security Wipe and press the Navigation key.

2. Restore factory default settings

• Highlight Emails, Contacts, etc., User Installed Applications or Media Cardand press the Navigation key.
• When the box next to the menu item is ticked (V), the selected data will be deleted.
• Highlight the field at the bottom of the display and key in blackberry
• Scroll to Wipe and press the Navigation key to restore the factory default settings.
• Follow the instructions on the display to set up your phone and prepare it for use.

On your printer, go to the settings menu -> factory defaults.

Do not restore - this is the factory default setting. Do not restore keeps the user defined settings.

Restore - returns all printer settings to the factory default settings except the Network/Ports menu settings. All downloads stored in RAM are deleted.

If nothing else works, you may have to manually calibrate the dials inside the mirror box. This video link will show you how. http://youtu.be/R1DIko0a1MA
This may be necessary if the printer got bumped really hard.

Via the Control Panel: The Resets menu makes it possible to reset factory settings, disable and enable Powersave, and update the printer after new supplies are installed. Configure device menu The Configure device menu makes it possible to change the printer's default print settings, adjust the print quality, change the system's configuration and I/O options, and reset the printer's default settings RESTORE FACTORY SETTINGS :Makes it possible to clear the page buffer, remove all perishable personality data, reset the printing environment, and return all default settings to factory defaults. Press Menu or (Select) to enter the MENUS.

1. Press (Down Arrow) to highlight Configure device menu .
2. Press (Select) to select Configure device menu
3. Press (down arrow) to System setup menu
4. Press (select) System setup menu
5. Press (select) Resets menu
6. Select RESTORE FACTORY SETTINGS.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

enter service mode then execute these service programs I would do an sp print
5990- 2 out first just in case

5801 Memory Clear
Resets software counters and returns modes and settings to their defaults.
All clear: Clears all data
Engine clear: Clears the printer engine settings
SCS: Clears the systems settings
PRT: Clears user mode system settings
NCS: Network control systems - Clears the items listed in the “Host Interface”
section of the Configuration page.
DCS: Delivery control system (e-mail settings)
MIRS: E-mail addresses
5801 1 Memory all clear
5801 2 Engine memory clear
Resets the following user tool settings:
Maintenance menu: Main scan registration, sub scan registration, image
density, curl control
Resets the settings of the following SPs: 1003, 1104, 1105, 1902, 1910, 2001,
2112, 2113, 2201, 2213, 2301, 2910, 3921, 3922, 3923, 3924, 5930
5801 3 SCS memory clear
Resets the following user tool settings:
Paper Input menu: Paper type, paper size, tray lock,
System menu: Energy saver timer
Resets the settings of the following SPs: 5009, 5812
Also resets the user code counters.