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Acer Aspire 1680 Service Guide

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    							71Chapter 4
    Check the Power Adapter
    Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power 
    adapter cable. See the following figure
    1.If the voltage is not correct, replace the power adapter.
    2.If the voltage is within the range, do the following:
    TReplace the System board.
    TIf the problem is not corrected, see “Undetermined Problems” on page 82.
    TIf the voltage is not correct, go to the next step.
    NOTE: An audible noise from the power adapter does not always indicate a defect.
    3.If the power-on indicator does not light up, check the power cord of the power adapter for correct 
    continuity and installation.
    4.If the operational charge does not work, see “Check the Battery Pack” on page 72. 
    Pin 1: +19 to +20.5V
    Pin 2: 0V, Ground 
    						
    							Chapter 472
    Check the Battery Pack 
    To check the battery pack, do the following:
    From Software:
    1.Check out the Power Management in control Panel
    2.In Power Meter, confirm that if the parameters shown in the screen for Current Power Source and Total 
    Battery Power Remaining are correct.
    3.Repeat the steps 1 and 2, for both battery and adapter.
    4.This helps you identify first the problem is on recharging or discharging. 
    From Hardware:
    1.Power off the computer. 
    2.Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). See the 
    following figure
    3.If the voltage is still less than 7.5 Vdc after recharging, replace the battery. 
    To check the battery charge operation, use a discharged battery pack or a battery pack that has less than 50% 
    of the total power remaining when installed in the computer. 
    If the battery status indicator does not light up, remove the battery pack and let it return to room temperature. 
    Re-install the battery pack.
    If the charge indicator still does not light up, replace the battery pack. If the charge indicator still does not light 
    up, replace the DC/DC charger board. 
    To u c h p a d  C h e c k
    If the touchpad doesn’t work, do the following actions one at a time to correct the problem. Do not replace a 
    non-defective FRU:
    1.Reconnect the touchpad cables.
    2.Replace the touchpad.
    3.Replace the system board.
    After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement 
    can occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware 
    problem. No service actions are necessary if the pointer movement stops in a short period of time. 
    						
    							73Chapter 4
    Power-On Self-Test (POST) Error Message 
    The POST error message index lists the error message and their possible causes. The most likely cause is 
    listed first.
    NOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU 
    replacement does not solve the problem, put the original part back in the computer. Do not replace a 
    non-defective FRU.
    This index can also help you determine the next possible FRU to be replaced when servicing a computer.
    If the symptom is not listed, see “Undetermined Problems” on page 82.
    The following lists the error messages that the BIOS displays on the screen and the error symptoms classified 
    by function. 
    NOTE: Most of the error messages occur during POST. Some of them display information about a hardware 
    device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the 
    way it has been configured. 
    NOTE: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enter 
    Setup and install Setup defaults or correct the error.  
    						
    							Chapter 474
    Index of Error Messages
    Error Code List
    Error CodesError Messages
    006 Equipment Configuration Error
    Causes:
    1. CPU BIOS Update Code Mismatch
    2. IDE Primary Channel Master Drive Error
    (THe causes will be shown before “Equipment Configuration 
    Error”)
    010 Memory Error at xxxx:xxxx:xxxxh (R:xxxxh, W:xxxxh) 
    070 Real Time Clock Error
    071 CMOS Battery Bad
    072 CMOS Checksum Error
    110 System disabled.
    Incorrect password is specified.
     Battery critical LOW
    In this situation BIOS will issue 4 short beeps then shut down 
    system, no message will show.
     Thermal critical High
    In this situation BIOS will shut down system, not show message.
    Error Message List
    Error MessagesFRU/Action in Sequence
    Failure Fixed Disk Reconnect hard disk drive connector.
    “Load Default Settings” in BIOS Setup Utility.
    Hard disk drive
    System board
    Stuck Key see “Keyboard or Auxiliary Input Device Check” on page 69. 
    Keyboard error see “Keyboard or Auxiliary Input Device Check” on page 69. 
    Keyboard Controller Failed see “Keyboard or Auxiliary Input Device Check” on page 69. 
    Keyboard locked - Unlock key switch Unlock external keyboard
    Monitor type does not match CMOS - Run Setup Run “Load Default Settings” in BIOS Setup Utility.
    Shadow RAM Failed at offset: nnnn BIOS ROM
    System board
    System RAM Failed at offset: nnnn DIMM
    System board
    Extended RAM Failed at offset: nnnn DIMM
    System board
    System battery is dead - Replace and run Setup Replace RTC battery and Run BIOS Setup Utility to reconfigure 
    system time, then reboot system.
    System CMOS checksum bad - Default 
    configuration usedRTC battery
    Run BIOS Setup Utility to reconfigure system time, then reboot 
    system.
    System timer error RTC battery
    Run BIOS Setup Utility to reconfigure system time, then reboot 
    system.
    System board 
    						
    							75Chapter 4
    Real time clock error RTC battery
    Run BIOS Setup Utility to reconfigure system time, then reboot 
    system.
    System board
    Previous boot incomplete - Default configuration 
    usedRun “Load Default Settings” in BIOS Setup Utility.
    RTC battery
    System board
    Memory size found by POST differed from 
    CMOSRun “Load Default Settings” in BIOS Setup Utility.
    DIMM
    System board
    Diskette drive A error Check the drive is defined with the proper diskette type in BIOS 
    Setup Utility
    See “External Diskette Drive Check” on page 69. 
    Incorrect Drive A type - run SETUP Check the drive is defined with the proper diskette type in BIOS 
    Setup Utility
    System cache error - Cache disabled System board
    CPU ID: System board
    DMA Test Failed DIMM
    System board
    Software NMI Failed DIMM
    System board
    Fail-Safe Timer NMI Failed DIMM
    System board
    Device Address Conflict Run “Load Default Settings” in BIOS Setup Utility.
    RTC battery
    System board
    Allocation Error for device Run “Load Default Settings” in BIOS Setup Utility.
    RTC battery
    System board
    Failing Bits: nnnn DIMM
    BIOS ROM
    System board
    Fixed Disk n None
    Invalid System Configuration Data BIOS ROM
    System board
    I/O device IRQ conflict Run “Load Default Settings” in BIOS Setup Utility.
    RTC battery
    System board
    Operating system not found Enter Setup and see if fixed disk and drive A: are properly identified.
    Diskette drive
    Hard disk drive
    System board
    Error Message List
    Error MessagesFRU/Action in Sequence 
    						
    							Chapter 476
    Error Message List
    No beep Error MessagesFRU/Action in Sequence
    No beep, power-on indicator turns off and LCD is 
    blank.Power source (battery pack and power adapter). See “Power 
    System Check” on page 70. 
    Ensure every connector is connected tightly and correctly. 
    Reconnect the DIMM.
    LED board.
    System board.
    No beep, power-on indicator turns on and LCD is 
    blank.Power source (battery pack and power adapter). See “Power 
    System Check” on page 70. 
    Reconnect the LCD connector
    Hard disk drive
    LCD inverter ID
    LCD cable
    LCD Inverter
    LCD
    System board
    No beep, power-on indicator turns on and LCD is 
    blank. But you can see POST on an external 
    CRT. Reconnect the LCD connectors.
    LCD inverter ID
    LCD cable 
    LCD inverter
    LCD
    System board
    No beep, power-on indicator turns on and a 
    blinking cursor shown on LCD during POST.Ensure every connector is connected tightly and correctly.
    System board
    No beep during POST but system runs correctly. Speaker
    System board 
    						
    							77Chapter 4
    POST Code
    CodeBeepsFor Boot Block in Flash ROM
    E0h Initialize the chipset
    E1h Initialize the bridge
    E2h Initialize the CPU
    E3h Initialize the system timer
    E4h Initialize system I/O
    E5h Check force recovery boot
    E6h Checksum BIOS ROM
    E7h Go to BIOS
    E8h Set Huge Segment
    E9h Initialize Multi Processor
    EAh Initialize OEM special code
    EBh Initialize PIC and DMA
    ECh Initialize Memory type
    EDh Initialize Memory size
    EEh Shadow Boot Block
    EFh System memory test
    F0h Initialize interrupt vectors
    F1h Initialize Run Time Clock
    F2h Initialize video
    F3h Initialize System Management Mode
    F4h 1 Output one beep before boot
    F5h Boot to Mini DOS
    F6h Clear Huge Segment
    F7h Boot to Full DOS 
    						
    							Chapter 478
    Index of Symptom-to-FRU Error Message
    LCD-Related Symptoms
    Symptom / ErrorAction in Sequence
    LCD backlight doesnt work
    LCD is too dark
    LCD brightness cannot be adjusted
    LCD contrast cannot be adjustedEnter BIOS Utility to execute “Load Setup Default Settings”, then 
    reboot system.
    Reconnect the LCD connectors.
    Keyboard (if contrast and brightness function key doesnt work).
    LCD inverter ID
    LCD cable
    LCD inverter
    LCD
    System board
    Unreadable LCD screen 
    Missing pels in characters
    Abnormal screen 
    Wrong color displayedReconnect the LCD connector
    LCD inverter ID
    LCD cable
    LCD inverter
    LCD
    System board
    LCD has extra horizontal or vertical lines 
    displayed.LCD inverter ID
    LCD inverter
    LCD cable
    LCD
    System board
    Indicator-Related Symptoms
    Symptom / ErrorAction in Sequence
    Indicator incorrectly remains off or on, but system 
    runs correctlyReconnect the inverter board
    Inverter board
    System board
    Power-Related Symptoms
    Symptom / ErrorAction in Sequence
    Power shuts down during operation Power source (battery pack and power adapter). See “Power 
    System Check” on page 70. 
    Battery pack
    Power adapter
    Hard drive & battery connection board
    System board
    The system doesn’t power-on. Power source (battery pack and power adapter). See “Power 
    System Check” on page 70. 
    Battery pack
    Power adapter
    Hard drive & battery connection board
    System board
    The system doesn’t power-off. Power source (battery pack and power adapter). See “Power 
    System Check” on page 70. 
    Hold and press the power switch for more than 4 seconds.  
    System board 
    						
    							79Chapter 4
    Battery can’t be charged See “Check the Battery Pack” on page 72. 
    Battery pack
    System board
    PCMCIA-Related Symptoms
    Symptom / ErrorAction in Sequence
    System cannot detect the PC Card (PCMCIA)  PCMCIA slot assembly
    System board
    PCMCIA slot pin is damaged. PCMCIA slot assembly
    Memory-Related Symptoms
    Symptom / ErrorAction in Sequence
    Memory count (size) appears different from 
    actual size.Enter BIOS Setup Utility to execute “Load Default Settings, then 
    reboot system.
    DIMM
    System board
    Speaker-Related Symptoms
    Symptom / ErrorAction in Sequence
    In Windows, multimedia programs, no sound 
    comes from the computer. Audio driver
    Speaker
    System board
    Internal speakers make noise or emit no sound. Speaker
    System board
    Power Management-Related Symptoms
    Symptom / ErrorAction in Sequence
    The system will not enter hibernation Keyboard (if control is from the keyboard)
    Hard disk drive
    System board
    The system doesnt enter hibernation mode and 
    four short beeps every minute.See “Hibernation Mode” on page 34.
    Press Fn+
    oand see if the computer enters hibernation mode.
    Touchpad
    Keyboard
    Hard disk connection board
    Hard disk drive
    System board
    The system doesn’t enter standby mode after 
    closing the LCDSee “Hibernation Mode” on page 34.
    LCD cover switch
    System board
    The system doesnt resume from hibernation 
    mode.See “Hibernation Mode” on page 34.
    Hard disk connection board
    Hard disk drive
    System board
    The system doesnt resume from standby mode 
    after opening the LCD.See “Hibernation Mode” on page 34.
    LCD cover switch
    System board
    Power-Related Symptoms
    Symptom / ErrorAction in Sequence 
    						
    							Chapter 480
    NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
    Problems” on page 82.
    Battery fuel gauge in Windows doesn’t go higher 
    than 90%. Remove battery pack and let it cool for 2 hours.
    Refresh battery (continue use battery until power off, then charge 
    battery).
    Battery pack
    System board
    System hangs intermittently. Reconnect hard disk/CD-ROM drives. 
    Hard disk connection board
    System board
    Peripheral-Related Symptoms
    Symptom / ErrorAction in Sequence
    System configuration does not match the 
    installed devices. Enter BIOS Setup Utility to execute “Load Default Settings”, then 
    reboot system.
    Reconnect hard disk/CD-ROM/diskette drives.
    External display does not work correctly. Press Fn+F5, LCD/CRT/Both display switching
    System board
    USB does not work correctly System board
    Print problems. Ensure the “Parallel Port” in the “Onboard Devices Configuration” of 
    BIOS Setup Utility is set to Enabled.
    Onboard Devices Configuration
    Run printer self-test.
    Printer driver
    Printer cable
    Printer
    System Board
    Serial or parallel port device problems. Ensure the “Serial Port” in the Devices Configuration” of BIOS Setup 
    Utility is set to Enabled.
    Device driver
    Device cable
    Device
    System board
    Keyboard/Touchpad-Related Symptoms
    Symptom / ErrorAction in Sequence
    Keyboard (one or more keys) does not work. Reconnect the keyboard cable.
    Keyboard
    System board
    Touchpad does not work. Reconnect touchpad cable.
    Touchpad board
    System board
    Modem-Related Symptoms
    Symptom / ErrorAction in Sequence
    Internal modem does not work correctly. Modem phone port
    modem combo board
    System board
    Power Management-Related Symptoms
    Symptom / ErrorAction in Sequence 
    						
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