Epson 486SX - Manual (Page 166)

Removing a Password
If you have forgotten your password and you do not want to
set a new one, there are two ways to remove the current
password:
Disable the existing password
Disable the password function.
To do either of these procedures, you must reset a jumper on
the main system board.
I . ,
If you are using network server mode and you remove the
password, the computer automatically turns off network
You should disable the existing password if you want to be able
to set a new password later without having to reset a jumper.
See “Disabling an existing password,” below, for instructions.
If you disable the password function, you cannot set a new
password unless you disable the existing password at that time.
If you do not want to use a password anymore, follow the
instructions under “Disabling the password function” below.
Disabling an existing password
If you do not know your power-on password and do not want
to set a new one, follow these steps to disable the existing
password:
1. Turn off the computer. Then follow the instructions under
“Changing the Jumper Settings” in Chapter 6 to disable the
password function by setting jumper JP5 to position A.
Troubleshooting B-11