Acer Travelmate 310 Service Guide

Chapter 3 55
7.  Disconnect the modem board.
8.  Remove the system board from the upper case. 

56 TravelMate 310 Service Guide 

Chapter 4 57
Use the following procedure as a guide for computer problems.
Note: The diagnostic tests are intended to test only Acer products. Non-
Acer products, prototype cards, or modified options can give false 
errors and invalid system responses.
1.  Obtain the failing symptoms in as much detail as possible.
2.  Verify the symptoms by attempting to re-create the failure by running the 
diagnostic test or by repeating the same operation.
Note: To run the diagnostics, refer to “Running the...

58 TravelMate 310 Service Guide
Do the following to select the test device. See “Running the Diagnostics” for 
details.
1.  Boot from the diagnostics diskette and start the PQA program (please 
refer to “Running PQA Diagnostics Program”).
2.  Go to the diagnostic Diskette Drive in the test items.
3.  Press F2 in the test items.
4.  Follow the instructions in the message window.
If an error occurs with the internal diskette drive, reconnector the connector 
on the Main board.
If the error still remains:...

Chapter 4 59
Memory Check
DIMM cards are available for increasing memory capacity.
Memory errors might stop system operations, show error messages on the 
screen, or hang the system.
1.  Boot from the diagnostics diskette and start the PQA program (please 
refer to “Running PQA Diagnostics Program”.
2.  Go to the diagnostic memory in the test items.
3.  Press F2 in the test items.
4.  Follow the instructions in the message window.
Note: Make sure that the DIMM is fully installed into the connector. A...

60 TravelMate 310 Service Guide
Power System Check
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 Check in 
the following list:
•  “Checking the AC...

Chapter 4 61
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...

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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...

Chapter 4 63
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...

64 TravelMate 310 Service Guide
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...