Check Procedures 77Undetermined ProblemsIf an error code, error message or error beeps ispresent, go to “Index of Symptoms, Messages, ErrorCodes, or Beeps” on page 40. If you did not receiveany messages, error codes, or beeps, see if thesymptom is listed in “Table 2-3 Error Symptoms List”on page 47. If you still cannot solve the problem,continue with this check:1. Check the power supply voltages (See “PowerBrick Connectors and Voltages” on page 119). Ifthe voltages are correct, return here and continuewith the following steps:2. Power off the system unit.3. Perform the following checks, one by one, until youhave isolated the problem FRU (refer to“Introduction” on page 116 for locations):- Load default settings in setup.- Check all system board jumper positions andswitch settings.- Check all adapter card jumper positions.- Check all device jumper positions.- Check all cables and connectors for proper in-stallation.4. If the jumpers, switch, and voltage settings arecorrect, continue with the following steps:• Remove or disconnect the following, one at a time:- Non-IBM devices- External devices- Any adapter card (modem card or video card, ifinstalled)- CD-ROM drive- Diskette drive- Hard disk drive- DIMM- Processor- System board5. Power on the system unit.6. Repeat steps 2 through 5 until you find the failingdevice or adapter.7. If software related, reload software from RecoveryCD.
