IBM 2658 Hardware Maintenance Manual - Page 59
Modem-Related Symptom, Operating System-Related Symptom, Intermittent Problems
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Symptom/Error Parallel port device problems. FRU/Action in Sequence 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 v Go to "FRU tests" on page 60. work correctly v Modem connector v Modem board v System board Operating System-Related Symptom Symptom/Error Operating system not found FRU/Action in Sequence 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: MT 2658/2659/2677 53