Acer Extensa 4120 Service Manual

Also see for Extensa 4120: User guide

Contents

Acer Extensa 4120 Service Manual Manual pdf 88 page image

78 Chapter 4Memory-related SymptomAudio-related SymptomsPower Management-related SymptomsSymptom / Error Action in SequenceMemory count (size) appears different fromactual size.Run the Setup Utility, then press F9 to load the systemdefaults.DIMMSystem boardSymptom / Error Action in SequenceIn Windows multimedia programs, nosound comes from the computer.Audio driverSpeakerSystem boardInternal speakers emit noise or emit nosound.SpeakerSystem boardSymptom / Error Action in SequenceThe system will not enter hibernation mode. Check the system hibernation settings. Press the key,then select ePower Management from the EmpoweringTechnology interface.Keyboard (if control is from the keyboard)Hard disk driveSystem boardThe system will not enter hibernation modeand emits four short beeps every minute. Press Fn+o and see if the computer enters hibernationmode.Check the system hibernation settings. Press the key,then select ePower Management from the EmpoweringTechnology interface.TouchpadKeyboardHard disk driveSystem boardThe system does not enter standby modeafter closing the notebook lid.Check the system hibernation settings. Press the key,then select ePower Management from the EmpoweringTechnology interface.System boardThe system will not leave hibernationmode.Hard disk driveSystem boardThe system doesn't resume from standbymode after opening the LCD.System boardBattery fuel gauge in Windows doesn’t gohigher than 90%.Remove the battery pack and let it cool for two hours.Refresh the battery pack (continue battery usage until poweris depleted, then recharge the battery).Battery packSystem boardSystem hangs intermittently. Reinstall the system drives (HDD/ODD).System board