Press the [Menu] key, and then select the setting items using the [] or [] key.
Disconnect communication cables connected to the printer.
Select [Security Options] Press [OK]
Select [Erase All Memory] Press [OK]
Press [Yes].
When overwriting is completed, press [Exit], and then turn off the main power.
Before turning the power off, see "Turning On/Off the Power", Operating Instructions.
If the main power switch is turned off before "Erase All Memory" is completed, overwriting will start over when the main power switch is turned back on.
If an error occurs before overwriting is completed, turn off the main power. Turn it on again, and then repeat from Step 2.