Acer Extensa 700 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 power is supplied by the battery pack.
If you suspect a power problem, see the appropriate power supply checkout 
in the following list:
•  “Checking the AC Adapter”
•  “Checking Operational Charging”
•  “Checking the Battery Pack”
Checking the AC Adapter:
•  You are here because the computer fails only when the AC Adapter is 
used:
•  If the power problem occurs only when the port replicator is used, 
replace the port replicator.
•  If the power-on indicator does not turn on, check the power cord of the 
AC Adapter for correct continuity and installation.
•  If the operational charge does not work, go to “Checking Operational 
Charging.”
1.  Unplug the AC Adapter cable from the computer and measure the output 
voltage at the plug of the AC Adapter cable. See the following figure
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:
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% of the total power remaining when installed in 
the computer.
Perform operational charging. If the battery status indicator does not turn on, 
remove the battery pack and let it return to room temperature. Reinstall the 
battery pack.
If the charge indicator still does not turn on, replace the battery pack. If the 
charge indicator still does not turn on, replace the Main board. Then reinstall 
the battery pack. If the reinstalled battery pack is not charged, go to the next 
section.
Checking the Battery Pack: 
Battery charging will not start until the Fuel-Gauge shows that less than 95% 
of the total power remains; with this condition the battery pack can charge to 
100% of its capacity. This protects the battery pack from being overcharged 
or having a shortened life. 
Do the following:
Pin Voltage (Vdc)
1 +19 to +20.5
2Ground
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							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 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.
If a click button problem or the pointing stick problem occurs, do the following:
1.  Boot from the diagnostics diskette and start the PQA program (please 
refer to “Running PQA Diagnostics Program”.
2.  Go to the diagnostic Pointing Dev. in the test items.
3.  Press F2 in the test items.
4.  Follow the instructions in the message window.
If either the pointing stick or the click button do not work, do the following 
actions one at a time to correct the problem. Do not replace a nondefective 
Spare Part:
1.  Reseat the TouchPad cables.
2.  Replace the TouchPad.
3.  Replace the TouchPad.
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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 Part to be 
replaced when servicing a computer.
Numeric error codes show the errors detected in POST or system operation. 
If no codes are available, use narrative symptoms.
If the symptom is not listed, go to “Undetermined Problems” .
Numeric Error Codes
The following is a list of the message that the BIOS can display. Most of them 
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. Following the list are 
explanations of the messages and remedies for reported problem.
Note: If the system fails after you make changes in the Setup menus, 
reset the computer, enter Setup and install Setup defaults or correct 
the error
Numeric error Codes
Symptom / Error Spare Part / Action in Sequence
0200
Failure Fixed Disk1.  Reseat Hard disk driver.
2.  “Load Setup Defaults” in BIOS Setup Utility.
3.  Hard disk driver
4.  Main board
0211
Stuck Key1.  Go to “Keyboard or Auxiliary Input Device Checkout”.
0211
Keyboard error1.  Go to “Keyboard or Auxiliary Input Device Checkout”.
0212
Keyboard Controller Failed1.  Go to “Keyboard or Auxiliary Input Device Checkout”.
0213
Keyboard locked - Unlock key 
switch1.  Unlock external keyboard
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							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 configuration used1.  Backup battery(RTC)
2.  Run SETUP to reconfigure System, then reboot 
system.
0260
System timer error1.  Backup battery(RTC)
2.  Run SETUP to reconfigure System, then reboot 
system.
3.  Main board
0270
Real time clock error1.  Backup battery(RTC)
2.  Run SETUP to reconfigure System, then reboot 
system.
3.  Main board
0280
Previous boot incomplete - 
Default configuration used1.  Run “Load Setup Defaults” in BIOS Setup Utility.
2.  Backup battery (RTC)
3.  Main board
0281
Memory size found by POST 
differed from CMOS1.  Run “Load Setup Defaults” in BIOS Setup Utility.
2.  DIMM
3.  Main board
02B0
Diskette driver A error1.  Check the drive is defined with the proper diskette type 
in Setup
2.  Go to “Diskette Drive Checkout”.
02B2
Incorrect Drive A type - run 
SETUP1.  Check the drive is defined with the proper diskette type 
in Setup
2.  Go to “Diskette Drive Checkout”.
02D0
System cache error - Cache 
disabled1.  IMM (CPU board)
2.  Main board
02F0
CPU ID:1.  IMM (CPU board)
2.  Main board
Numeric error Codes
Symptom / Error Spare Part / Action in Sequence
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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.  Backup battery (RTC)
3.  Main board
Failing Bits: nnnn 1.  DIMM
2.  BIOS ROM
3.  Main board
Fixed Disk n 1.  None
Invalid System Configuration 
Data1.  BIOS ROM
2.  Main board
I/O device IRQ conflict 1.  Run “Load Setup Defaults” in BIOS Setup Utility.
2.  Backup battery (RTC)
3.  Main board
Operating system not found 1.  Enter Setup and see if fixed disk and drive A: are 
properly identified.
2.  Diskette Driver
3.  Hard Disk
4.  Main board
No Beep Symptoms
Symptom / ErrorSpare Part / Action in Sequence
No beep, power-on 
indicator on, and a blank 
LCD not POST1.  Ensure every connector correctly
2.  DIMM
3.  Reseat IMM (CPU board)
4.  IMM (CPU board)
5.  Main board
Numeric error Codes
Symptom / Error Spare Part / Action in Sequence
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							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 backlight not working•  LCD too dark•  LCD brightness can not be 
adjusted
•  LCD contrast cannot be 
adjusted1.  Reseat the LCD connector
2.  Keyboard (if control is from the keyboard)
3.  LCD inverter ID
4.  LCD FPC Cable
5.  LCD inverter
6.  LCD
7.  Main board
•   LCD screen unreadable•  Characters missing pels•  Screen abnormal•  Wrong color displayed1.  Reseat the LCD connector
2.  LCD inverter ID
3.  LCD FPC Cable
4.  LCD inverter
5.  LCD
6.  Main board
LCD has extra horizontal or 
vertical lines displayed.1.  LCD inverter ID
2.  LCD inverter
3.  LCD FPC Cable
4.  LCD
5.  Main board
Keyboard/TouchPad-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
Keyboard (one or more keys) 
does not work.1.  Reseat the keyboard cable.
2.  Keyboard
3.  Main board
TouchPad does not work. 1.  Reseat TouchPad cable.
2.  TouchPad board
3.  Main board
No Beep Symptoms
Symptom / ErrorSpare Part / Action in Sequence
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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 will not power-off 1.  DC/DC & Charge board
2.  Main board
Battery can’t be charge 1.  Battery
2.  DC/DC & Charge board
3.  IDE board
4.  Main board
PCMCIA-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
System cannot detect the 
PCMCIA1.  PCMCIA slots assembly
2.  Main board
Memory-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
Memory count (size) appears 
different from actual size.1.  Enter BIOS Utility to execute load setup default 
settings, then reboot system.
2.  DIMM
3.  Main board
Speak-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
Speakers have noise or no 
sound comes from system1.  Speaker
2.  Main board
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							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 will not wake up from 
hibernation1.  Keyboard (if control is from the keyboard)
2.  Hard disk
3.  Main board
The system will not enter standby 
after close the LCD1.  LCD cover switch
2.  Main board
Battery fuel gauge does not go 
higher than 90%.1.  Remove battery pack and let it cool for 2 hours.
2.  Refresh battery (continue use battery until power off, 
then charge battery).
3.  Battery
4.  DC/DC & charge board
5.  Main board
System configuration does not 
match the installed devices.1.  Enter BIOS Utility to execute load setup default 
settings, then reboot system.
2.  Reseat CD-ROM/DVD module.
System hangs intermittently. 1.  Hard Disk/CD-ROM/DVD drive connector
2.  Fan
3.  Main board
In DOS or Windows, multimedia 
programs, no sound comes from 
the computer. 1.  Speaker
2.  Main board
Peripheral-Device-Related Symptoms
Symptom / ErrorSpare Part / Action in Sequence
External display does not work 
correctly.1.  Main board
USB does not work correctly 1.  Main board
Print problems. 1.  Run printer self-test.
2.  Printer driver
3.  Printer cable
4.  Main Board
Serial or parallel port device 
problems.1.  Device driver
2.  Device cable
3.  Device
4.  Main board
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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.
Undetermined Problems
You are here because the diagnostic tests did not identify which adapter or 
device failed, installed devices are incorrect, a short circuit is suspected, or 
the system is inoperative. Follow these procedures to isolate the failing Spare 
Part (do not isolate nondefective Spare Part).
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. (See “Power Systems Checkout”):
1.  Power off the computer.
2.  Visually check them for damage. If any problems are found, replace the 
Spare Part.
3.  Remove or disconnect all of the following devices:
a.  Non-Acer devices
b.  Devices attached to the port replicator
c.  Printer, mouse, and other external devices
d.  Battery pack
e.  Hard disk drive
f.  DIMM 
g.  CD-ROM
h.  Diskette drive
i.  PC Cards
4.  Power on the computer.
5.  Determine if the problem has changed.
6.  If the problem does not recur, reconnect the removed devices one at a 
time until you find the failing Spare Part.
7.  If the problem remains, replace the following Spare Part one at a time. Do 
not replace a nondefective Spare Part:
a.  Main board
b.  LCD assembly
c.  CPU card
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