Acer Extensa 710 Service Guide

Chapter 4 4-5
Flash Memory Update:
The flash Memory Update: The flash memory update is required for the 
following conditions:
•  New versions of system programs
•  New features or options
Power System Checkout
To verify the symptom of the problem, power on the computer using each of 
the following power sources:
1.  Remove the battery pack and diskette drive.
2.  Connect the AC Adapter and check that power is supplied.
3.  Disconnect the AC Adapter and install the charged battery pack; then 
check that...

4-6 EXTENSA 700/710 Service Guide
:
If the voltage is not correct, replace the AC Adapter.
If the voltage is within the range, do the following:
•  Replace the Main board.
•  If the problem is not corrected, go to “Undetermined Problems”.
•  If the voltage is not correct, go to the next step.
Note: An audible noise from the AC Adapter does not always indicate a 
defect.
Checking Operational Charging: 
To check operational charging, use a discharged battery pack or a battery 
pack that has less than 50%...

Chapter 4 4-7
1.  Power off the computer.
2.  Remove the battery pack and measure the voltage between battery 
terminals 1 (+) and 7. See the following figure:
If the voltage is still less than +10.0 Vdc after recharging, replace the battery.
TouchPad Checkout
If the TouchPad does not work, check the configuration in the ThinkPad BIOS 
program. If the configuration of the TouchPad is disabled, select Enable to 
enable it.
If this does not correct the TouchPad problem, continue with the following. 
After...

4-8 EXTENSA 700/710 Service Guide
Symptom-to-Spare Part Index
The symptom-to-Spare Part index lists the symptoms and errors and their 
possible causes. The most likely cause is listed first.
Note:  Perform the Spare Part replacement or actions in the sequence 
shown in the “Spare Part/Action” columns. If a Spare Part 
replacement did not solve the problem, put the original part back in 
the computer. Do not replace a nondefective Spare Part.
This index can also help you determine the next possible Spare...

Chapter 4 4-9
0220
Monitor type does not match 
CMOS - Run Setup1.  Run “Load Setup Defaults” in BIOS Setup Utility.
0230
Shadow RAM Failed at offset: 
nnnn1.  BIOS ROM
2.  Main board
0231
System RAM Failed at offset: 
nnnn1.  DIMM
2.  Main board
0232
Extended RAM Failed at 
offset:nnnn1.  DIMM
2.  Main board
0250
System battery is dead - Replace 
and run Setup1.  Replace backup battery(RTC) and Run SETUP to 
reconfigure System time, then reboot system.
0251
System CMOS checksum bad - 
Default...

4-10 EXTENSA 700/710 Service Guide
02F5
DMA Test Failed1.  DIMM
2.  IMM (CPU board)
3.  Main board
02F6
Software NMI Failed1.  DIMM
2.  IMM (CPU board)
3.  Main board
02F7
Fail-Safe Timer NMI Failed1.  DIMM
2.  IMM (CPU board)
3.  Main board
Error Messages
Symptom / Error Spare Part / Action in Sequence
Device Address Conflict 1.  Run “Load Setup Defaults” in BIOS Setup Utility.
2.  Backup battery (RTC)
3.  Main board
Allocation Error for: device 1.  Run “Load Setup Defaults” in BIOS Setup Utility.
2....

Chapter 4 4-11
No beep, power-on indicator not 
on, and a blank LCD during 
POST1.  Reseat LCD connectors
2.  LCD inverter ID
3.  LCD FPC cable
4.  LCD inverter
5.  LCD
6.  LED board
7.  Main board
No beep, power-on indicator on, 
and a blank LCD during POST.1.  Reseat the LCD connectors
2.  LCD inverter ID
3.  LCD FPC Cable
4.  LCD inverter
5.  LCD
6.  Main board
No beep during POST but 
system runs correctly.1.  Speaker
LCD-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
•  LCD...

4-12 EXTENSA 700/710 Service Guide
Indicator-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
Indicator incorrectly remains off 
or on, but system runs correctly1.  Reseat the LED board
2.  LED board
3.  Main board
Power-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
Power shuts down during 
operation1.  Battery
2.  AC Adapter
3.  DC/DC & Charge board
4.  Main board
The system will not power-on. 1.  Battery
2.  AC adapter
3.  DC/DC & Charge boar
4.  Main board
The system...

Chapter 4 4-13
Note: If you cannot find a symptom or an error in this list and the problem 
remains, see “Undetermined Problems”.
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, 
Power Management-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
The system will not enter 
hibernation1.  Keyboard (if control is from the keyboard)
2.  Hard disk
3.  Main board
The system...

4-14 EXTENSA 700/710 Service Guide
electrostatic discharge, or software errors. Spare Part 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 Main board in loop mode at least 
10 times.
2.  If no error is detected, do not replace any Spare Part.
3.  If any error is detected, replace the Spare Part shown by the Spare Part 
code. Rerun the test to verify that no more errors exist....