Epson 4000 - Manual (Page 44)

reset button
If resetting the computer does not correct the problem, you
probably need to turn it off and on again. Remove any
diskette(s) from the diskette drive(s). Turn off the computer
and wait 20 seconds. If you do not have a hard disk, insert the
operating system diskette in drive A. Then turn on the
computer.
Using a Password
You use the Security and Anti-virus option of the
SETUP program to define your password security. You can
define both a Supervisor password and a User password. You
also specify whether a password is required when you boot the
system and/or access a diskette drive.
If you enabled the Password on boot option when you ran
the SETUP program, you must enter the Supervisor or User
password every time you turn on or reset the computer. If you
disable the Password on boot option, you enter the
password when you start the SETUP program.
3-4 Using Your Computer