Reading is not difficult.....from the manual page 212 :
Initialize To Factory Default
The global settings found in the MPC5000 (listed below) are saved to the internal Flash Memory and stored when the MPC5000 is turned off.
You can re-initialize the Factory Preset settings using the following procedure.
01. Turn the MPC5000 on while holding the [ERASE] button.
02. Release the [ERASE] button after the display shows [MPC5000 (##MB installed)].
Now the MPC5000 is reset to the Factory Preset settings. The following global settings are stored in the MPC5000:
