IBM Thinkpad A20mp A21mp A22mp Manual

Related service information
This section provides information about the following:
v“Service web site”
v“Product recovery program”
v“Passwords”on page 27
v“Power management”on page 30
Service web site
When the latest maintenance diskette and the system
program service diskette become available, a notice will be
posted onhttp://www.ibm.com/pc/partner/infotips
Product recovery program
Restoring the pre-installed software:If the data on a hard-disk drive is damaged or accidentally
erased, you can restore...

Creating the service partition:To create the Service Partition and install the preloaded
system from the Recovery CD, do the following:
To create the Service Partition (SP):
1. Erase all partitions on the hard-disk drive, using FDISK
or a similar application.
2. Boot with the Recovery CD (and the boot diskette if
required.)
3. Following message appears:“Your computer
originally included a Product Recovery program ...
Reinstall the Product Recovery Program? (Y/N) [ ]”.
Note:If the hard-disk drive contains...

Recovery Repair diskette. Make a Recovery Repair
diskette and save it for future use. To make a Recovery
Repair diskette:
1. Shut down and turn off the computer.
2. Attach the external diskette drive to the computer.
3. At the prompt, press F11. (The option to press F11
appears for only a few seconds. You must press F11
quickly.) The Product Recovery program main menu
appears.
4. If you are using Windows 2000 Professional, you are
prompted to select an operating system. This menu
does not appear for...

Power-on password:A power-on password (POP) protects the system from
being powered on by an unauthorized person. The
password must be entered before an operating system can
be booted.
Hard-disk password:There are two hard-disk passwords (HDPs):
vUser HDP—for the user
vMaster HDP—for the system administrator, who can use
it to get access to the hard disk even if the user has
changed the user HDP
Note:There are two modes for the HDP:User onlyand
Master + User. TheMaster + Usermode requires
two HDPs; the...

For how to remove the battery pack, see“1010 Battery
pack”on page 60.
3. Remove the backup battery.
For how to remove the backup battery, see“1040
Backup battery”on page 66.
4. Turn on the computer and wait until the POST ends.
After the POST ends, the password prompt does not
appear. The POP has been removed.
5. Reinstall the backup battery and the battery pack.
(B) If an SVP has been set and is known by the servicer:
1. Turn on the computer by pressing and holding F1.
2. Enter the SVP. The IBM BIOS...

Power management
To reduce power consumption, the computer has three
power management modes: screen blank, standby, and
hibernation.
NotesvScreen blank mode is calledstandby modein
Windows 95 and Windows NT.
vStandby mode is calledsuspend modein
Windows 95 and Windows NT.
Screen blank modeScreen blank mode has three variants, as follows:
1. If you press Fn + F3, or the time set on the“LCD off
timer”in IBM BIOS Setup Utility expires,
vThe LCD backlight turns off.
vThe hard-disk drive motor stops.
vThe...

vIf the battery indicator blinks orange, indicating that the
battery power is low. (Alternatively, ifHibernate when
battery becomes lowhas been selected in the“Power
Management Properties”window, the computer goes
into hibernation mode.)
Note for the APM operating system:
Even if you do not set the low-battery alarm, the charge
indicator notifies you when the battery is low, and then the
computer enters the power-saving mode automatically.
This default low-battery behavior is independent of the
operating...

Note for OS/2If you are using OS/2 in the default format, HPFS,
you cannot create a hibernation file. If you want to
use hibernation mode, you will need to reinstall
OS/2 with FAT format.
In hibernation mode, the following occurs:
vThe system status, RAM, VRAM, and setup data are
stored on the hard disk.
vThe system is powered off.
Note:If the computer enters the hibernation mode while it
is docked to the docking station, do not undock it
from the docking station before resuming normal
operation. If you...

Checkout guide
Use the following procedures as a guide in identifying and
correcting problems with the ThinkPad computer.
Note:The diagnostic tests are intended to test only IBM
products. The use of non-IBM products, prototype
cards, or modified options can lead to false
indications of errors and invalid system responses.
1. Identify the failing symptoms in as much detail as
possible.
2. Verify the symptoms. Try to re-create the failure by
running the diagnostic test or by repeating the
operation....

If an error code appears, go to“Symptom-to-FRU
index”on page 49.
On the first screen, select the model and press Enter.
Follow the instructions on the screen.
2. The main panel of PC-Doctor appears.
3. SelectDiagnosticswith the arrow keys, and press
Enter.
A pull-down menu appears. (Its exact form depends on
the model.)
The options on the test menu are as follows:
Diagnostics Interactive Tests
vRun Normal Test
vRun Quick Test
vCPU/Coprocessor
vSystemboard
vVideo Adapter
vSerial Ports
vParallel Ports...