IBM Thinkpad A22m Wireless Models Manual

Checking the battery packBattery charging does not start until the Power Meter
shows that less than 95% of the total power remains;
under this condition the battery pack can charge to 100%
of its capacity. This protects the battery pack from being
overcharged or from having a shortened life.
To check the status of your battery, move your cursor to
the Power Meter icon in the icon tray of the Windows
taskbar and wait for a moment (but do not click), and the
percentage of battery power remaining is...

3. Remove the battery pack (see“1010 Battery pack”on
page 58 ).
4. Remove the backup battery (see“Checking the battery
pack”on page 37).
5. Measure the voltage of the backup battery. See the
following figure.
Red (+)
Black (-)Wire Voltage (V dc)
Red +2.5 to +3.2
Black Ground
vIf the voltage is correct, replace the system board.
vIf the voltage is not correct, replace the backup battery.
vIf the backup battery discharges quickly after
replacement, replace the system board.
Checkout guide
38ThinkPad A22m...

ThinkPad A22m wireless models
Product overview............41
Specifications............41
Status indicators...........42
FRU tests.............44
Fn key combinations..........46
Symptom-to-FRU index..........47
Numeric error codes..........47
Error messages...........50
Beep symptoms...........51
No beep symptoms..........51
LCD-related symptoms.........52
Intermittent problems..........52
Undetermined problems.........53
FRU replacement notices.........54
Screw notices............54
Retaining serial...

Bottom view............121
Parts list..............122
Overall.............122
LCD FRUs............126
14.1-in. XGA TFT.........126
Keyboard.............127
Recovery CDs...........128
For Windows 98..........128
For Windows 2000.........129
For Windows 2000/Windows NT.....129
Miscellaneous parts..........130
Optional FRUs...........131
Common parts list..........133
Tools.............133
Power cords (system)........133
Power cords (docking station)......134
Notices..............135...

Product overview
This section presents the following product-unique
information:
v“Specifications”
v“Status indicators”on page 42
v“FRU tests”on page 44
v“Fn key combinations”on page 46
Specifications
The following table lists the specifications of the ThinkPad
A20m wireless models:
Feature Description
ProcessorvIntel®mobile Pentium®III processor
900 MHz featuring Intel®SpeedStep™
technology
vIntel®mobile Pentium®III processor 1
GHz featuring Intel®SpeedStep™
technology
Bus architecture PCI Bus
Memory...

Feature Description
Infrared transfer IrDA 1.1
802.11b IBM Internal High Rate Wireless LAN PC
Card
PC Card One Type II
AC adapter 72-watt type
Bay devicev10-24 x CD-ROM drive
v8 x DVD drive
Status indicators
The system status indicators show the status of the
computer, as follows:
12
35467
Indicator Meaning

1BatteryGreen:The battery is fully charged.
Blinking green:
The battery has enough power to
operate, but is being charged.
Orange:The battery power is low. The battery
is to being charged.
Blinking...

Indicator Meaning

3Drive in
useGreen:Data is being read from or written to
the hard-disk drive, the diskette drive,
or the drive in the Ultrabay 2000.
When this indicator is on, do not put
the computer into standby mode or
turn off the computer.
Note:Do not move the system while the Green
drive in use light is on. Sudden physical shock
could cause drive errors.

4Num lockGreen:The numeric keypad on the keyboard
is enabled. To enable or disable the
keypad, press and hold the Shift key
while pressing...

FRU tests
The following table shows the test for each FRU.
FRU Applicable test
System board 1.Diagnostics --> CPU/Coprocessor
2.Diagnostics --> Systemboard
PowerDiagnostics --> Other Devices --> IBM AC
Adapter,IBM Battery 1 (IBM Battery 2)
LCD unit 1.Diagnostics --> Video Adapter
2.Interactive Tests --> Video
Modem 1. Make sure the modem is set up correctly.
2. Replace the modem jack and the modem
card in turn, and run the following test in
Diagnostics --> Communication:
a. Lucent Modem (M2) Loopback
b....

FRU Applicable test
CD-ROM or
DVD drive1.Diagnostics --> Other Devices -->
CD-ROM/DVD
2.Interactive Tests --> CD-ROM/DVD Test
Memory 1. If two DIMMs are installed, remove one of
them and runDiagnostics --> Memory
Test - Quick.
2. If the problem does not recur, return the
DIMM to its place, remove the other one,
and run the test again.
3. If the test does not detect the error, run
Diagnostics --> Memory Test - Full.
Fan 1. Turn on the computer and check the air
turbulence at the louver near the power...

Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
The Fn key works independently from the operating
system.
Key
combinationDescription
Fn+F1 Reserved.
Fn+F2 Reserved.
Fn+F3 Turn off the LCD display, leaving the screen
blank. To turn the LCD display on again, press
any key or the TrackPoint stick.
Fn+F4 Turn standby mode on. To return to normal
operation, press the Fn key independently,
without pressing a function key.
Fn+F5 Reserved.
Fn+F6...