Acer Veriton 2800 Service Manual

Also see for Aspire L300: User guide User manual

Contents

58 Chapter 4Error Symptoms ListNOTE: 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 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. See“Power Management” in chapter 2.2. With the system power on, measure the voltage ofprocessor fan connector. Its reading should be +12Vdc.Its reading should be +12Vdc. If the reading showsnormal, but the fan still does not work, then replace agood 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 orrepeated during POST.1. Insert the memory modules in the DIMM socketsproperly, 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.In Windows Systems, check settings in PowerManagement Property of Control Panel.2. Reload software from Recovery CD.Blinking cursor only; system does notwork.1. Diskette/IDE drive connection/cables2. Diskette/IDE disk drives3. See “Undetermined Problems”.4. Main boardDiskette DriveNOTE: Ensure the diskette drive is auto-setting in BIOS Setup and its read/write head is clean beforediagnosing any diskette drive problems.(If only one drive is installed, please make sure thedrive is connected to master connector or the drive is set to master.)Media and drive are mismatched. 1. Ensure the diskette drive is configured correctly in theDisk Drives of BIOS Setup.2. Ensure the diskette drive is correctly formatted.3. Diskette drive connection/cable4. Diskette drive5. Main boardDiskette drive does not work. 1. Ensure the diskette drive is not set to None in the DiskDrives of BIOS Setup.2. Diskette drive power3. Diskette drive connection/cable4. Diskette drive5. Main board