Lenovo 28479WU Hardware Maintenance Manual - Page 40
FRU tests, The following table shows the test for each FRU.
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FRU tests The following table shows the test for each FRU. Table 1. FRU tests FRU System board Power LCD unit Audio Speaker Applicable test 1. Diagnostics ➙ Microprocessor/Coprocessor 2. Diagnostics ➙ Systemboard Diagnostics ➙ ThinkPad Devices ➙ AC Adapter ➙ Battery 1 (Battery2) 1. Diagnostics ➙ Video Adapter 2. Interactive Tests ➙ Video Enter the BIOS Setup Utility and change Serial ATA (SATA) setting to Compatibility, and run Diagnostics ➙ Other Device ➙ Conexant Audio. Interactive Tests ➙ Internal Speaker Note: Once Audio test is done, the no sound is heard this test. In this case, turn off and turn on the computer. Then, run this test again. Keyboard Hard disk drive Diskette drive Memory TrackPoint® or pointing device Touch Pad 1. Diagnostics ➙ Systemboard ➙ Keyboard 2. Interactive Tests ➙ Keyboard Enter the BIOS Setup Utility and change Serial ATA (SATA) setting to Compatibility, and run Diagnostics ➙ Fixed Disks. You can also diagnose the drive without starting up the operating system. To diagnose the drive from the BIOS Setup Utility, do as follows: 1. Remove any diskette from the diskette drive, and then turn off the computer. 2. Turn on the computer. 3. While the message, "To interrupt normal startup, press Enter," is displayed at the lower left of the screen, press F1 to enter the BIOS Setup Utility. 4. Using cursor keys, select HDD diagnostic program. Press enter. 5. Using cursor keys, select Main hard disk drive. 6. Press Enter to start the diagnostic program. 1. Diagnostics ➙ Diskette Drives 2. Interactive Tests ➙ Diskette 1. If two memory modules are installed, remove one of them and run Diagnostics ➙ Advanced Memory Tests. 2. If the problem does not recur, return the memory module to its place, remove the other one, and run the test again. If the TrackPoint does not work, check the configuration as specified in the BIOS Setup Utility. If the TrackPoint is disabled, select Automatic to enable it. After you use the TrackPoint, the pointer may drift on the screen for a short time. This drift can occur when a slight, steady pressure is applied to the TrackPoint pointer. This symptom is not a hardware problem. If the pointer stops after a short time, no service action is necessary. If enabling the TrackPoint does not correct the problem, continue with the following: • Interactive Tests ➙ Mouse If the Touch Pad does not work, check the configuration as specified in the BIOS Setup Utility. If the Touch Pad is disabled, select Automatic to enable it. If enabling the Touch Pad does not correct the problem, continue with the following: • Interactive Tests ➙ Mouse 34 Hardware Maintenance Manual