Acer Travelmate 510 Service Guide

							Chapter 4 83
3.  If the voltage is still less than 8.0 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. Reinstall 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. 
Touchpad Check
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 cables.
3.  Replace the touchpad.
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. 
						

							84 Troubleshooting 
Error Symptom-to-FRU Index
The symptom-to-FRU index lists the symptoms and errors 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 92.
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.
Error Messages List
Error MessagesAction in Sequence
Failure Fixed Disk Reconnect hard disk drive connector.
“Load Default Settings” in BIOS Setup Utility.
Hard disk drive
System board
Stuck Key “Keyboard or Auxiliary Input Device Check”. 
Keyboard error “Keyboard or Auxiliary Input Device Check”.
Keyboard Controller Failed “Keyboard or Auxiliary Input Device Check” .
Keyboard locked - Unlock 
key switchUnlock external keyboard.
Monitor type does not 
match CMOS - Run SetupRun “Load Default Settings” in BIOS Setup Utility.
Shadow RAM Failed at 
offset: nnnnBIOS ROM
System board
System RAM Failed at 
offset: nnnnDIMM
System board
Extended RAM Failed at 
offset:nnnnDIMM
System board 
						

							Chapter 4 85
System battery is dead - 
Replace and run SetupReplace 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
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 that the drive is defined with the proper 
diskette type in BIOS Setup Utility.
Diskette Drive Check. 
Incorrect Drive A type - run 
SETUPCheck that the drive is defined with the proper 
diskette type in BIOS Setup Utility.
Diskette Drive Check. 
System cache error - Cache 
disabledCPU board
System board
CPU ID: CPU board
System board
DMA Test Failed DIMM
CPU board
System board
Software NMI Failed DIMM
CPU board
System board
Fail-Safe Timer NMI Failed DIMM
CPU board
System board
Error Messages List
Error MessagesAction in Sequence 
						

							86 Troubleshooting 
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 DataBIOS 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
No-Beep Symptoms
Symptom / ErrorAction in Sequence
No beep, power-on 
indicator turns off and LCD 
is blank.Power source (battery pack and power adapter). 
Power System Check. 
Ensure every connector is connected tight and 
correct. 
Reconnect the DIMM.
CPU board. 
DC-DC/charger board.  
System board.
Error Messages List
Error MessagesAction in Sequence 
						

							Chapter 4 87
No beep, power-on 
indicator turns on and LCD 
is blank.Power source (battery pack and power adapter). 
Power System Check. 
Reconnect the LCD connectors
DC-DC/charger board
CPU board. 
Hard disk drive
LCD inverter ID
LCD FPC cable
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 FPC 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
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 FPC cable
LCD inverter
LCD
System board
No-Beep Symptoms
Symptom / ErrorAction in Sequence 
						

							88 Troubleshooting 
Unreadable LCD screen 
Missing pels in characters
Abnormal screen 
Wrong color displayedReconnect the LCD connectors.
LCD inverter ID
LCD FPC Cable
LCD inverter
LCD
System board
LCD has extra horizontal or 
vertical lines displayed.LCD inverter ID
LCD inverter
LCD FPC Cable
LCD
System board
Indicator-Related Symptoms
Symptom / ErrorAction in Sequence
Indicator incorrectly remains 
off or on, but system runs 
correctly.Reconnect the LED board
LED board
System board
Power-Related Symptoms
Symptom / ErrorAction in Sequence
Power shuts down during 
operation.Power source (battery pack and power adapter). 
Power System Check. 
Battery pack
Power adapter
DC-DC/charger board
Audio-I/O & battery connection board
System board
The system doesn’t power-
on.Power source (battery pack and power adapter). 
Power System Check. 
Battery pack
Power adapter
DC/DC & Charge boar
Audio-I/O & battery connection board
System board
LCD-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							Chapter 4 89
The system doesn’t power-
off.Power source (battery pack and power adapter). 
Power System Check
Hold and press the power switch for more than 4 
seconds.  
Charger board
System board
Battery can’t be charged. Power System Check 
Battery pack
DC-DC/charger board
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 
damagedPCMCIA 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 DOS or Windows, 
multimedia programs, no 
sound comes from the 
computer. Press Fn-F8, Speaker ON/OFF control.
Audio driver
Speaker
System board
Internal speakers make 
noise or emit no sound.Press Fn-F8, Speaker ON/OFF control.
Speaker
System board
Power-Related Symptoms
Symptom / ErrorAction in Sequence 
						

							90 Troubleshooting 
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
Check with Sleep Manager.
The system doesnt enter 
hibernation mode and four 
short beeps every minute.Hibernation Mode
Press Fn+F4 and 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 LCD.Standby Mode
LCD cover switch
System board
The system doesnt resume 
from hibernation mode.Hybernation Mode
Hard disk connection board
Hard disk drive
System board
The system doesnt resume 
from standby mode after 
opening the LCD.Standby Mode
LCD cover switch
System board
Battery fuel gauge in 
Windows doesn’t go higher 
than 90%. Remove battery pack and let it cool for 2 hours.
Refresh battery (continue to use battery until 
power off, then charge battery).
Battery pack
Charger board
System board
System hangs intermittently. Set Thermal Sensor Threshold. 
Reconnect hard disk/CD-ROM drives. 
Hard disk connection board
System board 
						

							Chapter 4 91
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
Running PQA Diagnostics Program. 
System board
USB does not work 
correctly.System Diagnostics Diskette.
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 
problemsEnsure 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 
						

							92 Troubleshooting 
Note: If you cannot find a symptom or an error in this list and the 
problem remains.
Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons 
that have nothing to do with a hardware defect, such as: cosmic radiation, 
electrostatic discharge, or software errors. FRU replacement should be 
considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.  Run the advanced diagnostic test for the system board in loop mode at            
least 10 times.
2.  If no error is detected, do not replace any FRU.
3.  If any error is detected, replace the FRU.  Rerun the test to verify that 
there are no more errors. 
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, 
which installed devices are incorrect, whether a short circuit is suspected, or 
whether the system is inoperative.  
Follow these procedures to isolate the failing FRU (do not isolate a non-
defective FRU):
Note: 
Verify that all attached devices are supported by the computer.
Note: Verify that the power supply being used at the time of the failure is 
operating correctly.
1.  Power-off the computer.
2.  Visually check them for damage. If any problems are found, replace the 
FRU .
3.  Remove or disconnect all of the following devices:

Non-Acer devices

Devices attached to the port replicator Modem-Related Symptoms
Symptom / ErrorAction in Sequence
Internal modem does not 
work correctly.System Diagnostics Diskette
Modem phone jack
Modem board
System board