Acer Aspire 1680 Service Guide

							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