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 displayed. To get
detailed information about the battery, double-click the
Power Meter icon.
Note:If the battery pack becomes hot, it may not be able
to charge. Remove it from the computer and leave it
at room temperature for a while. After it cools down,
reinstall and recharge it.
To check the battery pack, do the following:
1. Power off the computer.
2. Remove the battery pack and measure the voltage
between battery terminals 1 (+) and 5 (). See the
following figure:
5(-)4321(+)
Terminal Voltage (V dc)
1 + 0 to + 12.6
5 Ground ()
3. If the voltage is less than +11.0 V dc, the battery pack
has been discharged.
Note:Recharging will take at least 3 hours, even if the
indicator does not turn on.
If the voltage is still less than +11.0 V dc after
recharging, replace the battery.
4. If the voltage is more than +11.0 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K.
If the resistance is not correct, replace the battery
pack. If the resistance is correct, replace the system
board.
Checking the backup batteryDo the following:
1. Power off the computer, and unplug the ac adapter
from it.
2. Turn the computer upside down.
Checkout guide
General descriptions37 
						

							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 wireless models 
						

							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 numbers.........55
Restoring the serial number of the system unit 55
Retaining the UUID.........55
Removing and replacing a FRU........57
1010 Battery pack...........58
1020 DIMM............59
1030 Mini PCI adapter.........61
1040 Backup battery..........63
1050 Hard-disk drive or RF ID adapter....64
1060 Ultrabay 2000 device........66
1070 Dummy card..........68
1080 Keyboard...........69
1090 Keyboard CRU insulator.......72
1100 Hinge cover and clear sheet icon....73
1110 Keyboard bezel and speaker......74
1120 Speaker cable..........77
1130 Wireless PC Card and sub card.....78
1140 PC Card slot assembly.......87
1150 Fan assembly..........89
1160 Diskette drive..........91
1170 Upper shield...........93
1180 TV card............94
1190 CPU socket and CPU........95
1200 System board and RJ45/11 connector
assembly............96
2010 LCD assembly..........99
2020 Front bezel...........105
2030 Inverter card..........106
2040 LCD panel...........107
2050 Antenna assembly........110
3010 ThinkPad Dock PCI cover......112
3020 ThinkPad Dock top cover......114
Locations..............119
Front view.............119
Rear view.............120
© Copyright IBM Corp. 2001
39  
						

							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
Trademarks............135
40ThinkPad A22m wireless models 
						

							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 (standard)v64 MB (64 MB SO-DIMM×1)
v128 MB (128 MB SO-DIMM×1)
Memory (optional) 64 MB, 128 MB, or 256 MB DIMM card
(maximum of 512 MB)
CMOS RAM 114 bytes + 128 bytes
Display 14.1-inch, 16M colors, XGA (1024×768
resolution) TFT color LCD
Diskette drive 1.44 MB (3-mode), 3.5-inch
Hard-disk drivev10.0 GB, 2.5-inch, IDE interface
v30.0 GB, 2.5-inch, IDE interface
I/O portvExternal monitor
vLine-in
vHeadphone
vMicrophone
vMouse or keyboard
vParallel
vPort replicator connector
vSerial
vUniversal serial bus (USB) connector
vRJ11
vRJ45
vTV-out
Internal modem 56.6 Kbps
AudiovInternal stereo speaker
vSoftware control volume
(continued)
Product overview
ThinkPad A22m wireless models41 
						

							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:
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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 orange:
The battery needs to be charged.
when the indicator starts blinking
orange, the computer beeps three
times.

2Standby
statusGreen:The computer is in standby mode.
Blinking green:
The computer is entering standby
mode or hibernation mode, or is
resuming normal operation. This
indicator does not blink in Windows
2000 and Windows Me.
(continued)
Product overview
42ThinkPad A22m wireless models 
						

							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 the NumLk key.

5Caps lockGreen:Caps Lock mode is enabled. To
enable or disable Caps Lock mode,
press Caps Lock key.

6Scroll lockGreen:Scroll Lock mode is enabled. Arrow
keys can be used as screen-scroll
function keys, but not to move the
cursor. To enable or disable Scroll
Lock mode, press ScrLk key. Not all
application programs support this
function.

7Power onGreen:This indicator stays lighted whenever
the computer is on. If the power-on
indicator is on and the standby
indicator is off, the system is ready to
use. If both the power-on indicator
and the standby indicator are on, you
can use the computer after it returns
from the standby mode and the
standby indicator goes off.Product overview
ThinkPad A22m wireless models43 
						

							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. Lucent Modem (M2) Dialtone/DTM
c. Intel Modem Register
d. Intel Modem Loopback/DTMF
e. Intel SP Modem Register
f. Intel SP Modem Loopback/DTMF
g. 3Com MiniPCI Modem Test
h. 3Com MiniPCI Dialtone Test
Audio 1.Interactive Tests --> Internal Speaker
2.Diagnostics --> Other Devices --> Crystal
SoundFusion
™Test
SpeakerInteractive Tests --> Internal Speaker
PC Card slotsDiagnostics --> Systemboard --> PCMCIA,
PCMCIA External Loop
Keyboard 1.Diagnostics --> Systemboard -->
Keyboard
2.Interactive Tests --> Keyboard
TrackPoint or
pointing deviceIf the TrackPoint does not work, check the
configuration in the ThinkPad Configuration
program. If the TrackPoint is disabled, select
Enableto enable it.
After you use the TrackPoint, the pointer may
drift on the screen for a short time. This drift
can occur when a slight, steady pressure is
applied to the TrackPoint pointer. This symptom
is not a hardware problem. If the pointer stops
after a short time, no service action is
necessary.
If enabling the TrackPoint does not correct the
problem, continue with the following:
vInteractive Tests --> Mouse
Hard-disk driveDiagnostics --> Fixed Disks
Diskette drive 1.Diagnostics --> Diskette Drives
2.Interactive Tests -->Diskette
(continued)
Product overview
44ThinkPad A22m wireless models 
						

							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
switch.
2. RunDiagnostics --> Other Devices -->
IBM Fan.Product overview
ThinkPad A22m wireless models45 
						

							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 Reserved.
Fn+F7 Switch between the LCD and an external monitor
(CRT). If an external monitor is attached,
computer output is displayed in the following
three patterns by turns:
vCRT display
vLCD + CRT display
vLCD
Fn+F8 Turn screen expansion on or off. (There is no
symbol on the key.)
Fn+F9 Reserved.
Fn+F10 Reserved.
Fn+F11 Reserved.
Fn+F12 Turn hibernation mode on. To return to normal
operation, press the power button for less than
four seconds.
Fn+PgUp Turn the ThinkLight on or off.
Fn+Home The LCD becomes brighter.
Fn+End The LCD becomes less bright.Product overview
46ThinkPad A22m wireless models