IBM MT 2632 manual Power management, Screen blank mode, Standby mode

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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-diskx 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:

vThe LCD backlight turns off.

vThe hard-disk drive motor stops.

vThe 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:

vThe LCD is powered off.

vThe hard-disk drive is powered off.

vThe CPU stops.

To enter standby mode, do any of the following:

vPress Fn + F4.

vClose the LCD cover. (To prevent the computer from entering standby mode when the LCD is closed, click

24ThinkPad A21e

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Contents Page Copyright IBM Corp Contents LCD FRU Before replacing parts Important service informationStrategy for replacing FRUs Diskette compatibility matrix How to use error messagesStrategy for replacing a hard-disk drive Safety notices multilingual translations Safety noticeSafety notice Continuation of Safety notice Safety notice Safety notice Continuation of Safety notice Safety notice Safety notice Safety notice Safety information General safetyElectrical safety Safety inspection guide Handling electrostatic discharge-sensitive devices Grounding requirements Laser compliance statementDo not open ThinkPad A21e Read this first What to do firstFollowing are not covered under warranty Related service information Service Web siteUsing Recovery CD To create Service Partition SPPasswords Power-on passwordHard-disk password Supervisor passwordHow to remove the hard-disk password How to remove the power-on passwordSelect Power-On Password Power management Screen blank modeStandby mode Select either User HDP or Master HDPHibernation mode Related service information Testing the computer Checkout guideDiagnostics Interactive Tests Power system checkout Detecting system information with PC-DoctorHardware Info UtilityChecking the ac adapter Checking operational chargingFor Lithium ion battery Checking the battery packFor Nickel metal hydride battery Checking the backup battery ThinkPad A21e Trademarks Specifications Product overviewStatus indicators Blinking orangeIndicator Meaning FRU Tests Following table shows the test for each FRUFRU Fn key combinations Fn + F3Symptom-to-FRU index Numeric error codesDimm IBM Bios Setup Utility Error messages Beep symptoms LCD-related symptoms Intermittent problemsFRU replacement notices Undetermined problemsScrew notices Retaining serial numbers Plastic to plasticLogic card to plastic Torque driverRetaining the Uuid Restoring the serial number of the system unitSelect 2. Read S/N data from Eeprom Removing and replacing a FRU Battery pack Dimm Mini PCI adapter Removing and replacing a FRU Backup battery DimmHard-disk drive Do not drop or apply any shock to the hard-diskRemoving and replacing a FRU Ultrabay 2000 device ThinkPad A21e Keyboard ThinkPad A21e Connector on the underside of the key then push Keyboard CRU insulator Hinge cover Keyboard bezel and speaker Step Screw quantity Torque Speaker cable Sub card M2.5 × 4.8 mm, nylon-coated 39.2 Ncm Kgfcm PC Card slot assembly Fan assembly Removing and replacing a FRU Diskette drive Upper shield System board M2.5 × 4.8 mm, nylon-coated 39.2 Ncm Kgfcm LCD assembly ThinkPad A21e Front bezel ThinkPad A21e Inverter card 12.1-in. panel14.1-in. and 15.0-in. panels LCD panel ThinkPad A21e 2628-Jxx M2.0 × 5.7 mm 24.5 Ncm Nylon-coated Kgfcm ThinkPad A21e Locations Front view Rear view Bottom view Parts list Parts marked with asterisk are CRU customer replacable unit MB Sdram SO Dimm LCD FRU 15.0-in. XGA TFT LG Keyboard Miscellaneous parts ThinkPad A21e Optional FRUs Common parts list Power cords systemTrademarks ThinkPad A21e Part Number 06P8883