October This manual supports ThinkPad A20m, A21m, A22m
IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual
A20p, A21p, A22p
ThinkPad Dock
Second Edition October
About this manual
iv ThinkPad A20m/p, A21m/p, A22m/p
About this manual
Contents
Introduction
General descriptions
1040
Strategy for replacing FRUs
Important service information
Introduction
Strategy for replacing a hard-disk drive
How to use error messages
Diskette compatibility matrix
Safety notice
Safety notices multilingual translations
Safety notice DANGER
Algunas baterías de reserva contienen una pequeñ a cantidad de níquel y cadmio. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Desé chelas tal como dispone la normativa local. Utilice só lo baterías que se encuentren en la lista de piezas. La utilizació n de una batería no apropiada puede provocar la ignició n o explosió n de la misma
La batterie contient du nickel. Ne la dé montez pas, ne l’exposez ni au feu ni à l’eau. Ne la mettez pas en court- circuit. Pour la mettre au rebut, conformez-vous à la ré glementation en vigueur. Lorsque vous remplacez la batterie, veillez à n’utiliser que les modè les cité s dans la liste de piè ces dé taché es adé quate. En effet, une batterie inapproprié e risque de prendre feu ou d’exploser
Las baterías contienen pequeñ as cantidades de níquel. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Desé chelas tal como dispone la normativa local. Utilice só lo baterías que se encuentren en la lista de piezas al sustituir la batería. La utilizació n de una batería no apropiada puede provocar la ignició n o explosió n de la misma
The lithium battery can cause a fire, an explosion, or a severe burn. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100C 212F, incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery
Desé chela tal como dispone la normativa local
10 ThinkPad A20m/p, A21m/p, A22m/p
To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card
12 ThinkPad A20m/p, A21m/p, A22m/p
Die Stromzufuhr muß abgeschaltet, alle Stromkabel aus der Steckdose gezogen, der Akku entfernt und alle Verbindungskabel abgenommen sein, bevor eine FRU entfernt wird
General safety
Safety information
Electrical safety
Safety inspection guide
Handling electrostatic discharge-sensitive devices
Laser compliance statement
Grounding requirements
Laser compliance statement
20 ThinkPad A20m/p, A21m/p, A22m/p
DANGER
Laser compliance statement
22 ThinkPad A20m/p, A21m/p, A22m/p
What to do first
General descriptions
Read this first
The following are not covered under warranty
Note for warranty
Service web site
Related service information
Product recovery program
Restoring the pre-installed software
To create a recovery repair diskette
Creating the service partition
To create the Service Partition SP
Reinstall the Product Recovery Program? Y/N ”
To use the recovery repair diskette
Passwords
Hard-disk password
Power-on password
Supervisor password
How to remove the power-on password
5. Select Master HDP
How to remove the hard-disk password
4. Select Power-On Password
Standby mode
Power management
Screen blank mode
Note for Windows NT
Hibernation mode
Note for the APM operating system
Note for OS/2
Checkout guide
Testing the computer
Checkout guide
3. Select Diagnostics with the arrow keys, and press Enter
If an error code appears, go to “Symptom-to-FRU index” on page
Diagnostics
Other Devices Diagnostics
Detecting system information with PC-Doctor
Power system checkout
Hardware Info
Utility
Checking operational charging
Checking the ac adapter
Checking the backup battery
Checking the battery pack
Red + Black
ThinkPad A20m/p, A21m/p and A22m/p
12.1-in. panel
Product overview
Specifications
Feature
Description
continued
Feature
42 ThinkPad A20m/p, A21m/p, A22m/p
Description
ThinkPad A20m/p, A21m/p and A22m/p
Feature
Description
A20m/p
Status indicators
ThinkPad A20m/p, A21m/p and A22m/p
indicator is off, the system is ready to
The following table shows the test for each FRU
FRU tests
continued
46 ThinkPad A20m/p, A21m/p, A22m/p
Applicable test
48 ThinkPad A20m/p, A21m/p, A22m/p
Fn key combinations
Symptom-to-FRU index
Symptom-to-FRU index
Numeric error codes
50 ThinkPad A20m/p, A21m/p, A22m/p
continued
ThinkPad A20m/p, A21m/p and A22m/p
52 ThinkPad A20m/p, A21m/p, A22m/p
Error messages
ThinkPad A20m/p, A21m/p and A22m/p
Beep symptoms
No beep symptoms
LCD-related symptoms
Undetermined problems
Intermittent problems
Screw notices
FRU replacement notices
v Plastic to plastic
90 degrees more Cross-section
Retaining the UUID
Retaining serial numbers
Restoring the serial number of the system unit
2. From the main menu, select 4. Assign UUID
Removing and replacing a FRU
Removing and replacing a FRU
60 ThinkPad A20m/p, A21m/p, A22m/p
1010 Battery pack
For access, remove this FRU v “1010 Battery pack” on page
1020 DIMM
Note Loosen the screw
but do not remove it
Removing and replacing a FRU
62 ThinkPad A20m/p, A21m/p, A22m/p
For access, remove this FRU v “1010 Battery pack” on page
1030 Mini PCI adapter
Note Loosen the screw
but do not remove it
For A20m/p, A21m/p series
For A22m/p series
For access, remove these FRUs, in order v “1010 Battery pack” on page
1040 Backup battery
v “1020 DIMM” on page v “1030 Mini PCI adapter” on page
66 ThinkPad A20m/p, A21m/p, A22m/p
Do not drop or apply any shock to the hard-disk
1050 Hard-disk drive or RF ID adapter
Removing and replacing a FRU
When installing Make sure that the HDD connector is firmly connected
68 ThinkPad A20m/p, A21m/p, A22m/p
to release
1060 Ultrabay 2000 device
Removing and replacing a FRU
70 ThinkPad A20m/p, A21m/p, A22m/p
M2.5 × 15 mm, nylon-coated
1070 Keyboard
0.392 Nm
4 kgfcm
Removing and replacing a FRU
continued
72 ThinkPad A20m/p, A21m/p, A22m/p
connector on the underside of the key then push the
For access, remove these FRUs, in order v “1010 Battery pack” on page
1080 Keyboard CRU insulator
v “1050 Hard-disk drive or RF ID adapter” on page
v “1060 Ultrabay 2000 device” on page v “1070 Keyboard” on page
1090 Hinge cover and clear sheet icon
1100 Keyboard bezel and speaker
Step
ThinkPad A20m/p, A21m/p and A22m/p
Screw quantity
Torque
For A20m/p and A21m/p series microphone and speaker cable
1110 Microphone and speaker cable
ThinkPad A20m/p, A21m/p and A22m/p
For A22m/p series speaker cable
When installing Make sure that you fasten the connector firmly
1120 Sub card
Step
ThinkPad A20m/p, A21m/p and A22m/p
Screw quantity
Torque
M2.0 × 9.5 mm, nylon-coated
1130 PC Card slot assembly
0.245 Nm
2.5 kgfcm
Note Step
1140 Fan assembly
84 ThinkPad A20m/p, A21m/p, A22m/p
Installation notice for A21m/p and A22m/p series
Note Step
1150 Diskette drive
When installing Do not press the
1160 Upper shield
1170 TV card
1180 CPU socket and CPU
v When attach the CPU to the socket, do as shown in the step
When installing the CPU, do as shown in the figure
v Rotate the screw head A 180 to the direction of the
arrow
1190 System board and RJ45/11 connector assembly
For A20m/p and A21m/p series For A22m/p series
For A21m/p series Upper side of the system board
Thermal rubbers location
Bottom side of the system board For A22m/p series
Upper side of the system board
2010 LCD assembly
Step
ThinkPad A20m/p, A21m/p and A22m/p
Screw quantity
Torque
12.1-in. panel
2020 Front bezel
ThinkPad A20m/p, A21m/p and A22m/p
14.1-in. and 15.0-in. panels
Removing and replacing a FRU
98 ThinkPad A20m/p, A21m/p, A22m/p
12.1-in. panel
2030 Inverter card
100 ThinkPad A20m/p, A21m/p, A22m/p
14.1-in. and 15.0-in. panels
12.1-in. panel
2040 LCD panel
Removing and replacing a FRU
continued
102 ThinkPad A20m/p, A21m/p, A22m/p
ThinkPad A20m/p, A21m/p and A22m/p
14.1-in. and 15.0-in. panels
continued
LCD cable in step v The LCD cable for the 15.0-in. UXGA LCD 27L0598
Before replacing the PCI cover
3010 ThinkPad Dock PCI cover
Removing and replacing a FRU
Bottom view
106 ThinkPad A20m/p, A21m/p, A22m/p
view
3020 ThinkPad Dock top cover
Rear
view
Bottom
continued
108 ThinkPad A20m/p, A21m/p, A22m/p
view, shown in the circle
v Make sure that the springs placed correctly
When replacing the top cover, do the following
v Make sure that the device release lever is seated correctly
continued
Removing and replacing a FRU
v Make sure that the release button works correctly
ThinkPad A20m/p, A21m/p and A22m/p
Locations Front view
Security keyhole Parallel connector Modem connector Network connector
Rear view
Serial connector External-monitor connector
Universal serial bus USB connector External-input-device connector
Battery pack Battery pack latches Mini PCI card slot
Bottom view
Docking connector DIMM slot Stereo headphone jack Stereo line-in jack
Diskette drive Microphone jack Infrared port Hard-disk drive
Model
Parts list A series model matrix
Mini PCI
device
116 ThinkPad A20m/p, A21m/p, A22m/p
Parts list
1 Memory 128 MB continued
ThinkPad A20m/p, A21m/p and A22m/p
1 Memory 128 MB continued
Model
Mini PCI
118 ThinkPad A20m/p, A21m/p, A22m/p
continued
Model
Mini PCI
ThinkPad A20m/p, A21m/p and A22m/p
1 Memory 128 MB continued
Model
Bay device
120 ThinkPad A20m/p, A21m/p, A22m/p
continued
Model
Mini PCI
ThinkPad A20m/p, A21m/p and A22m/p
1 Memory 128 MB continued
Model
Bay device
except Y1J
122 ThinkPad A20m/p, A21m/p, A22m/p
except Y2J
except U1J
Overall
are also available as
v The FRUs marked with
optional FRUs
Gxx, Kxx, Qxx, Txx
ThinkPad A20m/p, A21m/p and A22m/p
continued
126 ThinkPad A20m/p, A21m/p, A22m/p
continued
ThinkPad A20m/p, A21m/p and A22m/p
continued
128 ThinkPad A20m/p, A21m/p, A22m/p
continued
ThinkPad A20m/p, A21m/p and A22m/p
continued
130 ThinkPad A20m/p, A21m/p, A22m/p
continued
ThinkPad A20m/p, A21m/p and A22m/p
continued
132 ThinkPad A20m/p, A21m/p, A22m/p
continued
ThinkPad A20m/p, A21m/p and A22m/p
continued
134 ThinkPad A20m/p, A21m/p, A22m/p
continued
ThinkPad A20m/p, A21m/p and A22m/p
12.1-in. SVGA TFT
AC adapter
LCD FRUs
ThinkPad A20m/p, A21m/p and A22m/p
14.1-in. XGA TFT
15.0-in. XGA TFT SAMSUNG
15.0-in. XGA TFT LG
Following FRUs are available for MT2628-3xx, Jxx, Pxx, Rxx
Following FRUs are available for MT2628-3xx, Fxx, Jxx, Pxx, Rxx
15.0-in. UXGA TFT
15.0-in. SXGA+ TFT
Following FRUs are available for MT2628-Sxx and
Following FRUs are available for MT2629-Hxx, Uxx, Yxx
140 ThinkPad A20m/p, A21m/p, A22m/p
Keyboard
All of the keyboards listed below are CRUs customer replaceable units
For Windows 98 A22m
Recovery CDs
142 ThinkPad A20m/p, A21m/p, A22m/p
For Windows 98 A22p
For Windows 2000 A22p
For Windows 2000 A22m
For Windows 2000/Windows NT A22m
ThinkPad A20m/p, A21m/p and A22m/p
144 ThinkPad A20m/p, A21m/p, A22m/p
For Windows 2000/Windows NT A22p
ThinkPad A20m/p, A21m/p and A22m/p
Miscellaneous parts
continued
146 ThinkPad A20m/p, A21m/p, A22m/p
ThinkPad A20m/p, A21m/p and A22m/p
Optional FRUs
Power cords system
Common parts list
For 2-pin power cords
For 3-pin power cords
For 3-pin power cords
Power cords docking station
Trademarks
Notices
Notices
ThinkPad A20m/p, A21m/p and A22m/p
1P P/N 23P0896
Part Number 23P0896