IBM 7985 Problem Determination And Service Manual

v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 4, “Parts listing, System x3655, Type 7985 and 7943,” on page 93 to determine whichcomponents are customer replaceable units (CRU) and which components are field replaceable units(FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by atrained service technician.System event/error log message ActionPower supply n faultn = the power supply number 1. If the server power-on LED is lit, perform the following steps:a. Reduce the server to the minimum configuration (see“Solving undetermined problems” on page 89 for adescription of the minimum configuration).b. Reinstall the components you removed, one at a time,restarting the server each time.c. If the error recurs, the component you just reinstalled isdefective; replace the defective component.2. Reseat the following components:a. Power supply nb. Power backplane3. Replace the components listed in step 2, one at a time, in theorder shown, restarting the server each time.Power supply n AC power removedn = the power supply number 1. Make sure that the power cords are correctly connected to theserver and to a working electrical outlet.2. Replace power supply n.3. Replace the power backplane.Power supply n fan faultn = the power supply number 1. Make sure that there are no obstructions, such as bundledcables, to the airflow on the power-supply fan.2. Replace power supply n.Power supply current exceeded max spec value 1. Make sure that two power supplies are installed, and that theAC power cords are correctly connected to the power suppliesand to a working electrical outlet.2. Replace the power backplane.Primary HT2100 initiated sync flood: PCI-e slotn error 1. Reseat the failing adapter.2. Replace the failing adapter.3. (Trained service technician only) Replace the system board.Primary HT2100 initiated sync flood: SAS error (Trained service technician only) Replace the system board.POST reporting memory event DIMM Disabled -multi-bit or multi-symbol error Chassis Number 1Memory Card n Memory DIMM n1. Reseat the failing DIMM.2. (Trained service technician only) Reseat the microprocessor.3. (Trained service technician only) Replace the microprocessor.Processor initiated sync flood: Processor nfailed 1. (Trained service technician only) Reseat the microprocessor.2. (Trained service technician only) Replace the microprocessor.Slot n error (possible timeout condition) 1. Reseat the failing adapter.2. Replace the failing adapter.3. (Trained service technician only) Replace the system board.Chapter 3. Diagnostics 73