Checkout guideUse the following procedures as a guide in identifying and correcting problemswith the Lenovo 3000 computer.Note: The diagnostic tests are intended to test only Lenovo 3000 products. The useof non-Lenovo 3000 products, prototype cards, or modified options can leadto 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 testor by repeating the operation.Testing the computerThe Lenovo 3000 computer has a test program called PC-Doctor for DOS (hereaftercalled PC-Doctor.) You can detect errors by running the diagnostics test included inPC-Doctor. This section is an overview of the procedure. For details that dependon model-unique functions, refer to “Product overview” on page 32.For some possible configurations of the computer, PC-Doctor might not runcorrectly. To avoid this problem, you need to initialize the computer setup by useof the BIOS Utility before you run PC-Doctor. On the BIOS 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 toenable it by using Configuration utility for DOS. The utility is available onthe following Web site: http://www.lenovo.com/supportCreating the PC-Doctor diagnostics disketteTo create the PC-Doctor disk from the Rescue and Recovery workspace , do asfollows:1. Enter the Rescue and Recovery workspace by pressing the Lenovo Care buttonduring POST.2. When the Rescue and Recovery workspace finishes loading, click DiagnosticDiskette.3. Authenticating the digital signature takes about 15 seconds; then the Lenovo3000 computer will reboot into PC-DOS.4. A batch file automatically starts up to prompt you through the process ofcreating diskettes. You are notified of how many diskettes you will need.a. You are prompted to insert each diskette in sequence.b. Typically, all you need to do is to press the Enter key for the floppy drive;the system then formats and creates the diskette.c. Each diskette is erased and formatted with the PC-Doctor for DOS bootimage.5. Once all the diskettes have been created, the Lenovo 3000 computer will reboot.The user is asked to remove all diskettes from the drive, or to insert the firstdiskette created if it is desired to run the diagnostics.Checkout guideGeneral descriptions 25