IBM 2142, 2140 manual Reset, Power-On

Power-On	Password, CMOS		Reset
A power-on password denies				access to the system by	an	unauthorized		user
when the system is powered on. When a power-on password						is	active,	the
password	prompt	appears on		the screen each time the	system		is powered
on. The	system	unit	starts	after the proper password	is	entered.
In some	cases,	you	might	be required to service a	system		with an	active and

unknown power-on password. To clear a password from the system, first identify the system CMOS jumper by referring to “System Board Layout—Type A-1” on page 5-2 and “System Board Layout—Type A-2” on page 5-5, then follow these steps.

1.Power-off the system unit.

2.Unplug the power cable from the electrical outlet.

Attention:	Do	not	attempt these steps with the power cord plugged into
the electrical			outlet. The	power	supply+5 V maintainsdcof auxiliary
power	when	the	power switch is powered off. System damage might
result	if	the	power cord	is not	unplugged during testing.

3. Locate the power on password jumper on the system board.

System Board Type				Jumper
System	Board	Type	A-1	Password	Jumper	JP6
System	Board	Type	A-2	Password	Jumper	JP3

4.Move the jumper from pins 1-2 to pins 2-3 to erase the password. See “System Board Layout—Type A-1” on page 5-2 and “System Board Layout—Type A-2” on page 5-5.

5.The system detects the change and the password, time, and date are erased from memory. Power Management settings are also deleted.

(See “Power Management” on page 1-21.)

6.	Move	the	jumper	from pins		2-3 to pins	1-2 for normal	operation.
7.	Plug	the	power	cable	into	the electrical outlet and		power-on the system
	unit.
8.	Run	the	Setup	Utility	to	restore the	configurationEsc to settings. Press
	save	with	the	password disabled.

9.When you are finished servicing the machine, run the Setup Utility to restore the configuration settings. (You must reset the time, date, and

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