74TroubleshootingError Symptoms ListNOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a checkprocedure, 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 Symptom Action/FRUProcessor / Processor FanNOTE: Normally, the processor fan should be operative, and the processor clock setting should beexactly set to match its speed requirement before diagnosing any processor problems.Processor fan does not run but powersupply fan runs.1. Ensure the system is not in power saving mode.2. With the system power on, measure the voltageof processor fan connector. Its reading shouldbe +12Vdc. Its reading should be +12Vdc. If thereading shows normal, but the fan still does notwork, then replace a good fan.3. Main board.Processor test failed. 1. Processor.2. Main board.Main board and MemoryNOTE: Ensure the memory modules are installed properly and the contact leads are clean beforediagnosing any system problems.Memory test failed. 1. See "Memory"2. Main boardIncorrect memory size shown or repeated duringPOST.1. Insert the memory modules in the DIMMsockets properly, then reboot the system.2. Memory module.3. Main board.System works but fails to enter powersaving mode when the PowerManagement Mode is set to Enabled.1. Enter BIOS Setup and load default settings.2. Reload software from Recovery CD.Blinking cursor only; system does not work. 1. Diskette/IDE drive connection/cables2. Diskette/IDE disk drives3. See “Undetermined Problems”.4. Main boardHard Disk DriveNOTE: Ensure hard disk drive is configured correctly in BIOS Setup, cable/jumper are set correctly beforediagnosing any hard disk drive problems. (If only one drive is installed, please make sure the drive isconnected to master connector or the drive is set to master.)Hard disk drive test failed. 1. Enter BIOS Setup and Load default settings.2. Hard disk drive cable.3. Hard disk drive.4. Main board.Hard disk drive cannot formatcompletely.1. Enter BIOS Setup and Load default settings.2. Hard disk drive cable.3. Hard disk drive.4. Main board.