Acer Aspire One Model Nav Service Guide

Chapter 4111
Internal Microphone Failure
If the internal Microphone fails, perform the following actions one at a time to correct the problem. Do not 
replace non-defective FRUs:
Microphone Problems
If internal or external Microphones do no operate correctly, perform the following actions one at a time to 
correct the problem.
1.Check that the microphone is enabled. Navigate to Start´ Control Panel´ Hardware and Sound´ 
Sound and select the Recording tab.
2.Right-click on the Recording tab and select...

11 2Chapter 4
HDD Not Operating Correctly
If the HDD does not operate correctly, perform the following actions one at a time to correct the problem. 
1.Disconnect all external devices.
2.Run a complete virus scan using up-to-date software to ensure the computer is virus free. 
3.Run the Windows Vista Startup Repair Utility:
a.insert the Windows Vista Operating System DVD in the ODD and restart the computer. 
b.When prompted, press any key to start to the operating system DVD. 
c.The Install Windows...

Chapter 411 3
USB Failure (Rightside)
If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not 
replace non-defective FRUs:
Start
Check IO/B
to M/B 
CONN
Re-assemble 
the IO/B 
CONN to M/B
OK
NG
Check IO/B 
OK
Swap IO/B
OK
NG
Swap M/B 

11 4Chapter 4
Wireless Function Test Failure
If the wireless function test fails, perform the following actions one at a time to correct the problem. Do not 
replace non-defective FRUs:
Start
Check WL 
antenna to 
WL card
Re -a s s emble  
the antenna to 
WL card
OK
NG
Check 
antenna
OK
Swap The 
antenna
OK
NG
Swap M/B
Check WL 
card
OK
Swap the WL 
card
OK
NG 

Chapter 411 5
3G Function Test Failure
If the 3G function test fails, perform the following actions one at a time to correct the problem. Do not replace 
non-defective FRUs:
Start
Check 3G
antenna to 
3G card
Re -a s s emble  
the antenna to 
3G card
OK
NG
Check 
antenna
OK
Swap The 
antenna
OK
NG
Swap M/B
Check 3G
card
OK
Swap the 3G
card
OK
NG 

11 6Chapter 4
Switch Failure
If the switches fail, perform the following actions one at a time to correct the problem. Do not replace non-
defective FRUs:
Start
Check IO/B 
to M/B FFC 
Re-assemble 
the IO/B  FFC
to M/B
OK
NG
Check IO/B  
and FFC
OK
Swap The IO/B
OK
NG
Swap M/B 

Chapter 411 7
Thermal Units Failure
If the thermal units fail, perform the following actions one at a time to correct the problem. Do not replace non-
defective FRUs:
Power Button Failure
If the Power Button fails, perform the following actions one at a time to correct the problem. Do not replace 
non-defective FRUs:
START
Fan power
cable w ell
connected?Connect it  w ellNo
Fan OK?NoReplace fan
NoS eat it w ell
Replace M/B
CPU
H eat sink w ell
seated? 

11 8Chapter 4
External Mouse Failure
If an external Mouse fails, perform the following actions one at a time to correct the problem. 
1.Try an alternative mouse.
2.If the mouse uses a wireless connection, insert new batteries and confirm there is a good connection. See 
the mouse user manual.
3.If the mouse uses a USB connection, try an alternate USB port.
4.Try an alternative program to verify mouse operation. Reinstall the program experiencing mouse failure.
5.Restart the computer.
6.Remove any...

Chapter 411 9
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...

120Chapter 4
Motherboard CMOS Discharge
If any problems such as incorrect CMOS settings, the CMOS data can be cleared by short-circuiting the 
CMOS jumpers. Remove the Back Cover and use a metal conductivity tool to short-circuit the jumpers near 
the DIMM Module.