IBM ThinkPad 770E, Руководство по техническому обслуживанию аппаратной части

Страница: 31 / 136

RELATED SERVICE INFORMATION
Note
The supervisor password and hard disk password
cannot be replaced if they are forgotten. If the
customer forgets the supervisor password, the system
board must be replaced. If the customer forgets the
hard disk password, the hard disk drive must be
replaced.
How to Remove the Power-On Passwords:
If only the power-on password is set, do the following to
remove the power-on password.
1. Power off the computer
2. Remove the DIMM cover on the bottom side of the
computer.
3. Short-circuit the two password pads or put the
jumper.
For the location of the password pads or jumper, see
the “Locations” section for each model.
4. Under the short-circuit condition, power on the
computer and wait until the POST ends.
After the POST ends, the password prompt does not
appear. The power-on password is removed.
5. Reinstall the DIMM cover.
If both the power-on password and the supervisor
password are set, do the following to remove the
passwords:
1. Power on the computer by pressing and holding F1.
2. Enter the supervisor password. The Easy-Setup
menu appears.
3. Click on the Password icon.
4. Click on the Power on icon.
5. Enter the supervisor password and press the Space
bar.
6. Press Enter twice.
7. Click on Exit; then click on Restart.
The power-on password has been removed.
Power Management Features
Three power management modes are provided by the
computer to reduce power consumption and prolong
battery power.
Standby Mode:
In standby mode, the following
occurs:
Ÿ
The LCD backlight turns off.
Ÿ
The hard disk drive motor stops.
Ÿ
The speaker is muted.
General Descriptions
25