IBM A21e Hardware Maintenance Manual - Page 28

Power management, Screen blank mode:, Standby mode: - bios password

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Related service information To remove the user HDP that you have forgotten, do the following: 1. Power on the computer by pressing and holding F1. 2. Enter the SVP. The IBM BIOS Setup Utility menu appears. 3. Select Password, using the cursor keys to move down the menu. 4. Select Hard-disk x password, where x is the letter of the hard-disk drive. A pop-up window opens. 5. Select either User HDP or Master HDP. 6. Enter the master HDP; then leave the New Password field blank and press Enter twice. 7. Press F10. 8. Select Yes in the Setup Configuration window. The both user HDP and master HDP have been removed. Power management To reduce power consumption, the computer has three power management modes: screen blank (standby in Windows 95 and Windows NT) , standby (suspend in Windows 95 and Windows NT), and hibernation. Note for standby mode and hibernation mode Do not install or remove the UltraBay during standby mode or hibernation mode. The UltraBay of ThinkPad A21e supports only cold-swap. If you try to do warm-swap, the UltraBay LED starts to blink with beep sound. Screen blank mode: In screen blank mode, the following occurs: v The LCD backlight turns off. v The hard-disk drive motor stops. v The speaker is muted. To enter screen blank mode, press Fn + F3. 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. To enter standby mode, do any of the following: v Press Fn + F4. v Close the LCD cover. (To prevent the computer from entering standby mode when the LCD is closed, click 24 ThinkPad A21e

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To remove the user HDP that you have forgotten, do the
following:
1.
Power on the computer by pressing and holding
F1
.
2.
Enter the SVP. The IBM BIOS Setup Utility menu
appears.
3.
Select
Password
, using the cursor keys to move down
the menu.
4.
Select
Hard-disk
x
password
, where
x
is the letter of
the hard-disk drive. A pop-up window opens.
5.
Select either
User HDP
or
Master HDP
.
6.
Enter the master HDP; then leave the New Password
field blank and press
Enter
twice.
7.
Press
F10
.
8.
Select
Yes
in the Setup Configuration window.
The both user HDP and master HDP have been
removed.
Power management
To reduce power consumption, the computer has three
power management modes: screen blank (
standby
in
Windows 95 and Windows NT) , standby (
suspend
in
Windows 95 and Windows NT), and hibernation.
Note for standby mode and hibernation mode
Do not install or remove the UltraBay during standby
mode or hibernation mode. The UltraBay of
ThinkPad A21e supports only cold-swap. If you try
to do warm-swap, the UltraBay LED starts to blink
with beep sound.
Screen blank mode:
In screen blank mode, the following occurs:
v
The LCD backlight turns off.
v
The hard-disk drive motor stops.
v
The speaker is muted.
To enter screen blank mode, press
Fn
+
F3
. 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.
To enter standby mode, do any of the following:
v
Press
Fn
+
F4
.
v
Close the LCD cover. (To prevent the computer from
entering standby mode when the LCD is closed, click
Related service information
24
ThinkPad A21e