2. For the ThinkPad T40 and T40p series, enter the
master HDP. For the ThinkPad T41 and T41 series,
press F1 while HDP icon is appearing on the screen;
then enter the master HDP.
3. Select Start setup utility. Enter the SVP.
4. Select Security, using the cursor keys to move down
the menu.
5. Select Password.
6. Select Hard-disk x password, where x is the letter of
the hard disk drive. A pop-up window opens.
7. Select Master HDP.
8. Enter the master HDP; then leave the New Password
field blank and press Enter twice.
9. Press F10.
10. Select Yes in the Setup Configuration window.
Both user HDP and master HDP will have been
removed.
Power management
To reduce power consumption, the computer has three
power management modes: screen blank, standby, and
hibernation.
Screen blank mode
Screen blank mode has three variants, as follows:
1. If you press Fn+F3, or if the time set on the “LCD off
timer” in IBM BIOS Setup Utility expires,
v The LCD backlight turns off.
v The hard disk drive motor stops.
v The speaker is muted.
2. If you are using the ACPI operating system and you
press Fn+F3,
v The LCD backlight turns off.
v The hard disk drive motor stops.
3. If the time set on the “Turn off monitor” timer in the
operating system expires,
v The LCD backlight turns off.
To end screen blank mode and resume normal operation,
press any key.
Standby mode
When the computer enters standby mode, the following
events occur in addition to what occurs in screen blank
mode:
v The LCD is powered off.
v The hard disk drive is powered off.
v The CPU stops.
Related service information
32 MT 2373/2374/2375/2376/2378/2379