Lenovo NetVista Hardware Maintenance Manual (HMM) for NetVista 6832 and 6833 s - Page 59

Start This is the entry point for all check procedures. The check procedures use failure symptoms, Power-On Self Test (POST) error codes, or beeps to help determine the defective field replaceable unit (FRU). Follow the suggested check procedures or use the diagnostics diskette to determine the problem FRU. IMPORTANT: Replace FRUs ONLY when it is determined that the error is not a result of software, loose contacts, or dirty component surfaces. Any FRU change should be verified by running a complete test ("Diagnostics - All Tests" in PC-Doctor diagnostics program). This book comes with a diagnostic program diskette. This diskette should be used ONLY with 6832 and 6833 IBM Personal Computers. Do not use this diskette on other models. POST error codes and error messages are displayed on the screen after the IBM logo. Meanwhile, error beeps could be issued to help diagnose system problem. Please refer to "Index of Symptoms, Messages, Error Codes, or Beeps" on page 32 for additional help. All voltages in the check procedures are positive unless otherwise indicated. Use frame ground for all voltage checks unless otherwise specified. NOTE: If the check procedures instruct you to replace a FRU and the error message persists, an option adapter card might be causing the failure. Remove all option adapter cards, one at a time, until the error changes or the problem is no longer apparent. Replace the last option adapter card removed. The hard disk drive contains pre-loaded software. Be sure to reload the software on the primary hard disk drive (Drive C) when replacing it. IMPORTANT: The drives in the system you are servicing may have been rearranged, or the drive startup sequence has changed. Be extremely careful during write operations, such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive. Ask the customer to back up Check Procedures 27