IBM MT 2632 manual Read this first, What to do first

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General descriptions

This chapter includes descriptions for any ThinkPad model that has the PC-Doctor DOS diagnostics program. Some descriptions might not apply to your particular computer.

Read this first

Before you go to the checkout guide, be sure to read this section.

Important notes

vOnly certified trained personnel should service the computer.

vRead the entire FRU removal and replacement page before replacing any FRU.

vUse new nylon-coated screws when you replace FRUs.

vBe extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten.

vReplace FRUs only for the correct model. When you replace a FRU, make sure the model of the machine and the FRU part number are correct by referring to the FRU parts list.

vA FRU should not be replaced because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing a FRU only when a problem recurs. If you suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do not replace the FRU.

vBe careful not to replace a nondefective FRU.

What to do first:

When you do return a FRU, you must include the following information in the parts exchange form or parts return form that you attach to it:

__ 1. Name and phone number of servicer __ 2. Date of service

__ 3. Date on which the machine failed __ 4. Date of purchase

__ 5. Failure symptoms, error codes appearing on the display, and beep symptoms

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Contents Page Copyright IBM Corp Contents LCD FRU Strategy for replacing FRUs Important service informationBefore replacing parts Strategy for replacing a hard-disk drive How to use error messagesDiskette compatibility matrix Safety notice Safety notices multilingual translationsSafety notice Continuation of Safety notice Safety notice Safety notice Continuation of Safety notice Safety notice Safety notice Safety notice General safety Safety informationElectrical safety Safety inspection guide Handling electrostatic discharge-sensitive devices Laser compliance statement Grounding requirementsDo not open ThinkPad A21e What to do first Read this firstFollowing are not covered under warranty To create Service Partition SP Related service informationService Web site Using Recovery CDSupervisor password PasswordsPower-on password Hard-disk passwordSelect Power-On Password How to remove the power-on passwordHow to remove the hard-disk password Select either User HDP or Master HDP Power managementScreen blank mode Standby modeHibernation mode Related service information Checkout guide Testing the computerDiagnostics Interactive Tests Utility Power system checkoutDetecting system information with PC-Doctor Hardware InfoChecking operational charging Checking the ac adapterFor Nickel metal hydride battery Checking the battery packFor Lithium ion battery Checking the backup battery ThinkPad A21e Trademarks Product overview SpecificationsBlinking orange Status indicatorsIndicator Meaning Following table shows the test for each FRU FRU TestsFRU Fn + F3 Fn key combinationsNumeric error codes Symptom-to-FRU indexDimm IBM Bios Setup Utility Error messages Beep symptoms Intermittent problems LCD-related symptomsScrew notices Undetermined problemsFRU replacement notices Torque driver Retaining serial numbersPlastic to plastic Logic card to plasticSelect 2. Read S/N data from Eeprom Restoring the serial number of the system unitRetaining the Uuid Removing and replacing a FRU Battery pack Dimm Mini PCI adapter Removing and replacing a FRU Dimm Backup batteryDo not drop or apply any shock to the hard-disk Hard-disk driveRemoving and replacing a FRU Ultrabay 2000 device ThinkPad A21e Keyboard ThinkPad A21e Connector on the underside of the key then push Keyboard CRU insulator Hinge cover Keyboard bezel and speaker Step Screw quantity Torque Speaker cable Sub card M2.5 × 4.8 mm, nylon-coated 39.2 Ncm Kgfcm PC Card slot assembly Fan assembly Removing and replacing a FRU Diskette drive Upper shield System board M2.5 × 4.8 mm, nylon-coated 39.2 Ncm Kgfcm LCD assembly ThinkPad A21e Front bezel ThinkPad A21e 12.1-in. panel Inverter card14.1-in. and 15.0-in. panels LCD panel ThinkPad A21e 2628-Jxx M2.0 × 5.7 mm 24.5 Ncm Nylon-coated Kgfcm ThinkPad A21e Locations Front view Rear view Bottom view Parts list Parts marked with asterisk are CRU customer replacable unit MB Sdram SO Dimm LCD FRU 15.0-in. XGA TFT LG Keyboard Miscellaneous parts ThinkPad A21e Optional FRUs Power cords system Common parts listTrademarks ThinkPad A21e Part Number 06P8883