IBM 8872 - eServer xSeries 460 Service Manual

Contents

v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 3, “Parts listing, Type 8872 and Type 8874,” on page 93 to determine which components arecustomer 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.Lit light pathdiagnostics LED withthe system-error orsystem-informationLED also lit Description ActionDASD A hard disk drive has failed or hasbeen removed.Note: The error LED on the failinghard disk drive is also lit.1. Reinstall the removed drive.2. Reseat the following components:a. Failing hard disk driveb. SAS hard disk drive backplanec. SAS 6x cabled. I/O board3. Replace the components listed in step 2 one at atime, in the order shown, restarting the server eachtime.RAID The RAID adapter (ServeRAID-8i)has indicated a fault. 1. See the BMC log or the system-error log (see“Error logs” on page 18).2. Reseat the following components:a. RAID adapterb. Hard disk drivesc. I/O board3. Replace the components listed in step 2 one at atime, in the order shown, restarting the server eachtime.NONRED The server is operating withnonredundant power. If a powersupply or its ac power source fails,the system will be over spec.Note: The LOG LED might also belit.1. If the PS LED on the light path diagnostics panel islit, follow the instructions for that LED.2. Replace the failing power supply.3. Remove optional devices.4. Use 220 V ac instead of 110 V ac.TEMP A system temperature or componenthas exceeded specifications.Note: A fan LED might also be lit.1. See the BMC log or the system-error log (see“Error logs” on page 18) for the source of the fault.2. Make sure that the airflow of the server is notblocked.3. If a fan LED is lit, reseat the fan.4. Replace the fan for which the LED is lit.5. Make sure that the room is neither too hot nor toocold (see “Environment” in “Features andspecifications” on page 3).6. If one of the VRDs indicates “hot,” ac power mustbe removed before dc power can be restored.Chapter 2. Diagnostics 55