IBM MT 2632 manual Checkout guide, Testing the computer

Page 31

Checkout guide

Checkout guide

Use the following procedures as a guide in identifying and correcting problems with the ThinkPad computer.

Note: The diagnostic tests are intended to test only IBM products. The use of non-IBM products, prototype cards, or modified options can lead to false indications of errors and invalid system responses.

1.Identify the failing symptoms in as much detail as possible.

2.Verify the symptoms. Try to re-create the failure by running the diagnostic test or by repeating the operation.

Testing the computer

The ThinkPad computer has a test program called PC-Doctor DOS (hereafter called PC-Doctor). You can detect errors by running the diagnostics test included in PC-Doctor. This section is an overview of the procedure. For details that depend on model-unique functions, refer to “Product overview” on page 35.

For some possible configurations of the computer, PC-Doctor might not run correctly. To avoid this problem, you need to initialize the computer setup by use of the IBM BIOS Setup Utility before you run PC-Doctor. On the IBM BIOS Setup Utility screen, press F9, Enter, F10, and then Enter.

Note: When you initialize the computer configuration, some devices are disabled, such as the serial port. If you test one of these devices, you will need to enable it by using PS2.EXE.

PC-Doctor cannot be used to test a device that is in the docking station, even if the computer supports the docking station. To test a USB device, connect it to the USB connector of the computer. To test the Ultrabay 2000 device, install it in the Ultrabay 2000 slot of the computer.

To run the test, do as follows:

Note: In the following procedure, you can select an item not only with the arrow keys, but also with the TrackPoint. Instead of pressing Enter, click the left button.

1.Insert the PC-Doctor disk into the diskette drive; then power on the computer.

If the computer cannot be powered on, go to “Power system checkout” on page 29, and check the power sources.

General descriptions 27

Image 31

Contents Page Copyright IBM Corp Contents LCD FRU Before replacing parts Important service informationStrategy for replacing FRUs Diskette compatibility matrix How to use error messagesStrategy for replacing a hard-disk drive 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 passwordHow to remove the hard-disk password How to remove the power-on passwordSelect Power-On 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 Lithium ion battery Checking the battery packFor Nickel metal hydride 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 symptomsFRU replacement notices Undetermined problemsScrew notices Torque driver Retaining serial numbersPlastic to plastic Logic card to plasticRetaining the Uuid Restoring the serial number of the system unitSelect 2. Read S/N data from Eeprom 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