Lenovo NetVista Hardware Maintenance Manual (HMM) for NetVista 6832 and 6833 s - Page 70

Table 2-3 Error Symptoms List NOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a check procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/ FRU listed in right column is the most likely cause. Error Symptoms Action/FRU Processor / Processor Fan NOTE: Normally, the processor fan should be operative, and the processor clock setting should be exactly set to match its speed requirement before diagnosing any processor problems. Processor fan does not run but power supply fan runs. 1. Ensure that the system is not in power saving mode and the "Stop CPU clock in sleep state" is not set to Yes. See "Power Management" on page 5. 2. With the system power on, measure the voltage of processor fan connector FN2. Its reading should be +12Vdc. See "System Board Jumpers and Connectors" on page 113. 3. Processor fan. 4. System board. Processor test failed. 1. Processor. 2. System board. System Board and Memory NOTE: Ensure that the memory modules are installed properly and the contact leads are clean before diagnosing any system problems. Memory test failed. 1. See "Memory" on page 59. 2. System board 38 IBM Desktop System HMM