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(The main memory with 8MB of VGA.) v v v v Go to “FRU tests” on page 54. Enter BIOS Utility and execute .Load Setup Default Settings.; then reboot the system. DIMM System board Audio-Related Symptoms Symptom/Error FRU/Action in Sequence Internal speakers make noise or emit no sound. v v v Speaker volume control Go to “FRU tests” on page 54. Speaker(s) External speakers make noise or emit no sound. v v v Speaker volume control Go to “FRU tests” on page 54. Speaker(s) In DOS or Windows, multimedia programs, no sound comes from the computer. (Only system beeps are heard at power-on.) v v v Speaker volume control Go to “FRU tests” on page 54. Speaker(s) PC Card (PCMCIA)-Related Symptoms Symptom/Error FRU/Action in Sequence System cannot detect the PC Card (PCMCIA) v PC Card (PCMCIA) holder assembly v System board PCMCIA slot pin is damaged. PC Card (PCMCIA) holder assembly 46 ThinkPad R30/R31 HMM Power Management-Related Symptoms Symptom/Error FRU/Action in Sequence The system doesn’t enter hibernation mode. v v v v v v Go to “Hibernation mode” on page 29. Boot an operating system and press Fn+F12 and see if the computer enters hibernation mode. Keyboard Hard disk drive connector Hard disk drive System board The system doesn’t resume from hibernation mode. v v v v Go to “Hibernation mode” on page 29. Hard disk drive connector Hard disk drive System board The system doesn’t enter into or resume from v Lid switch sleep mode after closing v System board the LCD. v Lid close action in the power operation properties of the OS System configuration does not match the installed devices. v v Enter BIOS Utility and execute .Load Setup Default Settings.; then reboot the system. Reseat Hard disk/diskette/CD-ROM drive connector. System hangs intermittently. v v v Reseat hard disk/diskette/CD-ROM drive connector. Fan ASM (go to “FRU tests” on page 54). System board Peripheral-Device-Related Symptoms Symptom/Error FRU/Action in Sequence External display does not work correctly. v Both display mode, press Fn+F7. v System board Printer problems. v Run printer self-test. v Printer driver v Printer cable v Ensure that .Parallel Port. in the .Config sub-menu. menu of the BIOS Utility is correctly set. v System board MT 2656, 2657, 2676 47 Symptom/Error FRU/Action in Sequence Parallel port device problems. v Device driver v Device cable v Device v Ensure that .Parallel Port. in the .Config sub-menu. menu of the BIOS Utility is correctly set. v System board Modem-Related Symptom Symptom/Error FRU/Action in Sequence Internal modem does not work correctly v Go to “FRU tests” on page 54. v Modem connector v Modem board v System board Operating System-Related Symptom Symptom/Error FRU/Action in Sequence Operating system not found v Check that the operating system has no failure and is installed correctly. v Check the Boot device list in the startup/Boot sub-menu is enabled on each bootable device. v Enter IBM BIOS Setup Utility and see whether the hard disk drive and the diskette drive are properly identified. v Reseat the hard disk drive. v Reinstall the operating system. v Diskette drive v Hard disk drive v System board Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electronic discharge, or software errors. FRU replacement should only be considered when a recurring problem exists. When analyzing on intermittent problem, do the following: 48 ThinkPad R30/R31 HMM 1. Run the diagnostic test for the system board at least 10 times. 2. If no error is detected, do not replace any FRUs. 3. If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors. Undetermined Problems The diagnostic tests did not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow the procedures below to isolate the failing FRU. Verify that the power supply being used at the time of the failure is operating correctly. 1. Power off the computer. 2. Check the cables, wires, and connectors for short circuits and open circuits. Visually check them for damage. If any problems are found, replace the FRU. 3. Remove or disconnect all of the following devices: v Non-IBM devices v Printer, external mouse & keyboard, and other external devices v Battery pack v Hard disk drive v CD-ROM drive/Diskette drive (optional) v PC Card (PCMCIA) 4. Power on the computer. 5. Determine if the problem has changed. 6. If the problem does not occur again, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time. Do not replace a non-defective FRU. v Hard disk drive connection board v LCD assembly v System board MT 2656, 2657, 2676 49 ThinkPad R30 This section applies to the following models: 2656, 2657, 2676. 50 ThinkPad R30/R31 HMM Product overview...
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