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IBM A22M, A21M, A22P, A21P, A20M, MT 2631 How to use error messages, Diskette compatibility matrix

Models: MT 2631 A20M A21P A22M A22P A21M

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Important service information

Strategy for replacing a hard-disk drive

Always try to run a low-level format before replacing a hard-disk drive.

Attention: The drive startup sequence in the computer you are servicing may have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten.

How to use error messages

Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code may also cause false error codes. If no error code is displayed, see if the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing.

Diskette compatibility matrix

The compatibility of each of the drives with the diskettes for it is as follows:

Diskette	Diskette	Compatibility
drive	capacity

3.5-inch	1.0 MB	Read and write
	2.0 MB	Read and write
	4.0 MB	Not compatible

2ThinkPad A20m/p, A21m/p, A22m/p

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IBM A22M, A21M, A22P How to use error messages, Diskette compatibility matrix, Strategy for replacing a hard-disk drive

Contents

IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual October This manual supports ThinkPad A20m, A21m, A22mA20p, A21p, A22p ThinkPad DockSecond Edition October About this manual iv ThinkPad A20m/p, A21m/p, A22m/p Contents About this manualIntroduction General descriptions1040 Strategy for replacing FRUs Important service informationIntroduction Strategy for replacing a hard-disk drive How to use error messagesDiskette compatibility matrix Safety notices multilingual translations Safety noticeSafety 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 Safety information General safetyElectrical safety Safety inspection guide Handling electrostatic discharge-sensitive devices Grounding requirements Laser compliance statementLaser compliance statement 20 ThinkPad A20m/p, A21m/p, A22m/p DANGER 22 ThinkPad A20m/p, A21m/p, A22m/p Laser compliance statementWhat to do first General descriptionsRead this first Note for warranty The following are not covered under warrantyRelated service information Service web siteProduct recovery program Restoring the pre-installed softwareCreating the service partition To create a recovery repair disketteTo create the Service Partition SP Reinstall the Product Recovery Program? Y/N ”Passwords To use the recovery repair diskettePower-on password Hard-disk passwordSupervisor password How to remove the power-on password5. Select Master HDP How to remove the hard-disk password4. Select Power-On Password Standby mode Power managementScreen blank mode Note for Windows NT Hibernation modeNote for the APM operating system Note for OS/2 Checkout guide Testing the computerCheckout guide If an error code appears, go to “Symptom-to-FRU index” on page 3. Select Diagnostics with the arrow keys, and press EnterDiagnostics Other Devices DiagnosticsPower system checkout Detecting system information with PC-DoctorHardware Info UtilityChecking the ac adapter Checking operational chargingChecking the battery pack Checking the backup batteryRed + Black ThinkPad A20m/p, A21m/p and A22m/p 12.1-in. panel Specifications Product overviewFeature DescriptionFeature continued42 ThinkPad A20m/p, A21m/p, A22m/p DescriptionFeature ThinkPad A20m/p, A21m/p and A22m/pDescription A20m/pStatus indicators indicator is off, the system is ready to ThinkPad A20m/p, A21m/p and A22m/pFRU tests The following table shows the test for each FRUcontinued 46 ThinkPad A20m/p, A21m/p, A22m/pApplicable test Fn key combinations 48 ThinkPad A20m/p, A21m/p, A22m/pSymptom-to-FRU index Symptom-to-FRU indexNumeric error codes continued 50 ThinkPad A20m/p, A21m/p, A22m/pThinkPad A20m/p, A21m/p and A22m/p Error messages 52 ThinkPad A20m/p, A21m/p, A22m/pThinkPad A20m/p, A21m/p and A22m/p Beep symptomsNo beep symptoms LCD-related symptoms Intermittent problems Undetermined problemsFRU replacement notices Screw noticesv Plastic to plastic 90 degrees more Cross-sectionRetaining the UUID Retaining serial numbersRestoring 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 FRU1010 Battery pack 60 ThinkPad A20m/p, A21m/p, A22m/p1020 DIMM For access, remove this FRU v “1010 Battery pack” on pageNote Loosen the screw but do not remove it62 ThinkPad A20m/p, A21m/p, A22m/p Removing and replacing a FRU1030 Mini PCI adapter For access, remove this FRU v “1010 Battery pack” on pageNote Loosen the screw but do not remove itFor A20m/p, A21m/p series For A22m/p series 1040 Backup battery For access, remove these FRUs, in order v “1010 Battery pack” on pagev “1020 DIMM” on page v “1030 Mini PCI adapter” on page 66 ThinkPad A20m/p, A21m/p, A22m/p1050 Hard-disk drive or RF ID adapter Do not drop or apply any shock to the hard-diskRemoving and replacing a FRU When installing Make sure that the HDD connector is firmly connected68 ThinkPad A20m/p, A21m/p, A22m/p 1060 Ultrabay 2000 device to release70 ThinkPad A20m/p, A21m/p, A22m/p Removing and replacing a FRU1070 Keyboard M2.5 × 15 mm, nylon-coated0.392 Nm 4 kgfcmRemoving and replacing a FRU continued72 ThinkPad A20m/p, A21m/p, A22m/p connector on the underside of the key then push the 1080 Keyboard CRU insulator For access, remove these FRUs, in order v “1010 Battery pack” on pagev “1050 Hard-disk drive or RF ID adapter” on page v “1060 Ultrabay 2000 device” on page v “1070 Keyboard” on page1090 Hinge cover and clear sheet icon 1100 Keyboard bezel and speaker ThinkPad A20m/p, A21m/p and A22m/p StepScrew quantity Torque1110 Microphone and speaker cable For A20m/p and A21m/p series microphone and speaker cableThinkPad A20m/p, A21m/p and A22m/p For A22m/p series speaker cableWhen installing Make sure that you fasten the connector firmly 1120 Sub card ThinkPad A20m/p, A21m/p and A22m/p StepScrew quantity Torque1130 PC Card slot assembly M2.0 × 9.5 mm, nylon-coated0.245 Nm 2.5 kgfcm1140 Fan assembly Note StepInstallation notice for A21m/p and A22m/p series 84 ThinkPad A20m/p, A21m/p, A22m/p1150 Diskette drive Note StepWhen installing Do not press the 1160 Upper shield 1170 TV card 1180 CPU socket and CPU When installing the CPU, do as shown in the figure v When attach the CPU to the socket, do as shown in the stepv Rotate the screw head A 180 to the direction of the arrow1190 System board and RJ45/11 connector assembly For A20m/p and A21m/p series For A22m/p series Thermal rubbers location For A21m/p series Upper side of the system boardBottom side of the system board For A22m/p series Upper side of the system board2010 LCD assembly ThinkPad A20m/p, A21m/p and A22m/p StepScrew quantity Torque2020 Front bezel 12.1-in. panel14.1-in. and 15.0-in. panels ThinkPad A20m/p, A21m/p and A22m/p98 ThinkPad A20m/p, A21m/p, A22m/p Removing and replacing a FRU2030 Inverter card 12.1-in. panel14.1-in. and 15.0-in. panels 100 ThinkPad A20m/p, A21m/p, A22m/p2040 LCD panel 12.1-in. panelRemoving and replacing a FRU continued102 ThinkPad A20m/p, A21m/p, A22m/p ThinkPad A20m/p, A21m/p and A22m/p 14.1-in. and 15.0-in. panelscontinued LCD cable in step v The LCD cable for the 15.0-in. UXGA LCD 27L0598 3010 ThinkPad Dock PCI cover Before replacing the PCI coverRemoving and replacing a FRU Bottom view106 ThinkPad A20m/p, A21m/p, A22m/p view 3020 ThinkPad Dock top coverRear Bottom viewcontinued 108 ThinkPad A20m/p, A21m/p, A22m/pview, shown in the circle When replacing the top cover, do the following v Make sure that the springs placed correctlyv Make sure that the device release lever is seated correctly continuedRemoving and replacing a FRU v Make sure that the release button works correctlyThinkPad A20m/p, A21m/p and A22m/p Locations Front view Rear view Security keyhole Parallel connector Modem connector Network connectorSerial connector External-monitor connector Universal serial bus USB connector External-input-device connectorBottom view Battery pack Battery pack latches Mini PCI card slotDocking connector DIMM slot Stereo headphone jack Stereo line-in jack Diskette drive Microphone jack Infrared port Hard-disk driveParts list A series model matrix ModelMini PCI device116 ThinkPad A20m/p, A21m/p, A22m/p Parts list1 Memory 128 MB continued 1 Memory 128 MB continued ThinkPad A20m/p, A21m/p and A22m/pModel Mini PCIcontinued 118 ThinkPad A20m/p, A21m/p, A22m/pModel Mini PCI1 Memory 128 MB continued ThinkPad A20m/p, A21m/p and A22m/pModel Bay devicecontinued 120 ThinkPad A20m/p, A21m/p, A22m/pModel Mini PCI1 Memory 128 MB continued ThinkPad A20m/p, A21m/p and A22m/pModel Bay device122 ThinkPad A20m/p, A21m/p, A22m/p except Y1Jexcept Y2J except U1JOverall v The FRUs marked with are also available asoptional FRUs Gxx, Kxx, Qxx, Txxcontinued ThinkPad A20m/p, A21m/p and A22m/pcontinued 126 ThinkPad A20m/p, A21m/p, A22m/pcontinued ThinkPad A20m/p, A21m/p and A22m/pcontinued 128 ThinkPad A20m/p, A21m/p, A22m/pcontinued ThinkPad A20m/p, A21m/p and A22m/pcontinued 130 ThinkPad A20m/p, A21m/p, A22m/pcontinued ThinkPad A20m/p, A21m/p and A22m/pcontinued 132 ThinkPad A20m/p, A21m/p, A22m/pcontinued ThinkPad A20m/p, A21m/p and A22m/pcontinued 134 ThinkPad A20m/p, A21m/p, A22m/pThinkPad A20m/p, A21m/p and A22m/p 12.1-in. SVGA TFT AC adapterLCD FRUs 14.1-in. XGA TFT ThinkPad A20m/p, A21m/p and A22m/p15.0-in. XGA TFT LG 15.0-in. XGA TFT SAMSUNGFollowing FRUs are available for MT2628-3xx, Jxx, Pxx, Rxx Following FRUs are available for MT2628-3xx, Fxx, Jxx, Pxx, Rxx15.0-in. SXGA+ TFT 15.0-in. UXGA TFTFollowing FRUs are available for MT2628-Sxx and Following FRUs are available for MT2629-Hxx, Uxx, Yxx140 ThinkPad A20m/p, A21m/p, A22m/p KeyboardAll of the keyboards listed below are CRUs customer replaceable units Recovery CDs For Windows 98 A22mFor Windows 98 A22p 142 ThinkPad A20m/p, A21m/p, A22m/pFor Windows 2000 A22m For Windows 2000 A22pFor Windows 2000/Windows NT A22m ThinkPad A20m/p, A21m/p and A22m/pFor Windows 2000/Windows NT A22p 144 ThinkPad A20m/p, A21m/p, A22m/pThinkPad A20m/p, A21m/p and A22m/p Miscellaneous partscontinued 146 ThinkPad A20m/p, A21m/p, A22m/p Optional FRUs ThinkPad A20m/p, A21m/p and A22m/pCommon parts list Power cords systemFor 2-pin power cords For 3-pin power cordsPower cords docking station For 3-pin power cordsNotices TrademarksThinkPad A20m/p, A21m/p and A22m/p NoticesPart Number 23P0896 1P P/N 23P0896