Acer Aspire S3 Ms2346 Service Guide

							Troubleshooting4-11
Drag the slider to 50. Confirm that the volume is not muted.
Click Mixer to verify that other audio applications are set to 50 and not muted.
6. Navigate to Start   Control Panel   Hardware and Sound   Sound. Confirm that 
Speakers are selected as the default audio device (green check mark).
NOTE:NOTE :
If Speakers do not show, right-click on the  Playback tab and select  Show Disabled 
Devices  (clear by default).
7. Select Speakers and c lick Configure to start Speaker Setup. Follow the on-screen 
prompts to configure the speakers.
8. Remove any recently insta lled hardware or software.
9. Restore system and file settings from a known good date using  System Restore.
10. If the issue is remains, repeat step 9, selecting an earlier time and date.
11. Reinstall the Operating System.
12. If the issue is still not resolved, refer to the  Online Support Information on page9-3  
						

							4-12Troubleshooting
Microphone Failure0
If internal or external Microphones fail, perform the following, one at a time.
Figure 4-7. Microphone Failure
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  Show Disabled Devices  (clear by 
default). The microphone appears on the  Recording tab.
3. Right click on the microphone and select  Enable.
4. Select the microphone then click Properties. Select the  Levels tab.
5. Increase the volume to th e maximum setting and click OK.
6. Test the microphone hardware:
Select the microphone and click  Configure.
Select Set up microphone.
Select the microphone type from the list and click  Next.
Follow the on-screen prompts to complete the test.
7. If the issue is still not resolved, refer to the  Online Support Information on page9-3 
						

							Troubleshooting4-13
USB Failure0
If the USB fails, perform the following, one at a time. Do not replace a non-defective FRU:
Figure 4-8. USB Failure 
						

							4-14Troubleshooting
WLAN Failure0
If the WLAN fails, perform the following, one at a time. Do not replace a non-defective FRU:
Figure 4-9. WLAN Failure 
						

							Troubleshooting4-15
Card Reader Failure0
If the Card Reader fails, perform the following, one at a time. Do not replace a non-defective 
FRU:
Figure 4-10. Card Reader Failure 
						

							4-16Troubleshooting
Thermal Unit Failure0
If the Thermal Unit fails, perform the following, one at a ti me. Do not replace a non-defective 
FRU:
Figure 4-11. Thermal Unit Failure 
						

							Troubleshooting4-17
Other Functions Failure0
1. Check if drives are functioning correctly.
2. Check if external modules are functioning correctly.
3. Change mainboard to check if current one is defective. 
						

							4-18Troubleshooting
Intermittent Problems 0
Intermittent system hang problems can be caused by a variety of reasons that have nothing to 
do with a hardware def ect, such as: cosmic radiation, el ectrostatic discharge, or software 
errors. FRU replacement should be considered only when a recurring problem exists.
When analyzing an intermittent problem, perform 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 an error is detected, replace the FRU. Reru n the test to verify that there are no more 
errors.
Undetermined Problems 0
The diagnostic problems does not identify whic h adapter or device failed, which installed 
devices are incorrect, whether a short circui t is suspected, or whether the system is 
inoperative.
Perform the following procedures  to isolate the failing FRU (do not isolate non-defective 
FRU).
NOTE:NOTE :
Verify that all attached device s are supported by the computer.
NOTE:NOTE:
Verify that the power supply being used at th e time of the failure is operating correctly. 
1. Remove power from the computer.
2. Visually check the components for damage. If any problems are found, replace the FRU.
3. Remove or disconnect all of the following devices:
Non-Acer devices
Printer, mouse, and other external devices
Battery pack
Hard disk drive
DIMM
CD-ROM/Diskette drive Module
PC Cards
4. Apply power to the computer.
5. Determine if the problem has changed.
6. If the problem does not recur, connect the re moved devices one at a time until failing FRU 
is found.
7. If the problem remains, replace the followi ng FRUs one at a time. Do not replace a 
non-defective FRU:
Mainboard
LCD assembly 
						

							Troubleshooting4-19
Error Codes0
Table 4-2. Error Codes
Error CodesError Messages
006 Equipment Configuration Error Causes:
1. CPU BIOS Update Code Mismatch
2. IDE Primary Channe l Master Drive Error
(The causes will be shown before  “Equipment Configuration Error”)
010 Memory Error at xxxx:xxxx:xxxxh (R:xxxxh, W:xxxxh) 
070 Real Time Clock Error
071 CMOS Battery Bad
072 CMOS Checksum Error
110 System is disabled. An incorrect password was entered.
 Battery critically  low. In this situation BIOS will issue four (4) short beeps, 
then shuts the system down. No message is displayed.
 Temperature is critically high . In this situation BIOS shuts the system 
down. No message is displayed. 
						

							4-20Troubleshooting
BIOS Beep Codes0
Table 4-3. BIOS Beep Codes
Code BeepsPOST Routine Description
02hVerify Real Mode
03h Disable Non-Maskable Interrupt (NMI)
04h Get CPU type
06h Initialize system hardware
08h Initialize chipset with initial POST values
09h Set IN POST flag
0Ah Initialize CPU registers
0Bh Enable CPU cache
0Ch Initialize caches to initial POST values
0Eh Initialize I/O component
0Fh Initialize the local bus IDE
10h Initialize Power Management
11h Load alternate registers with initial POST values
12h Restore CPU control word during warm boot
13h Initialize PCI Bus Mastering devices
14h Initialize keyboard controller
16h 1-2-2-3 BIOS ROM checksum
17h Initialize cache before memory autosize
18h 8254 timer initialization
1Ah 8237 DMA controller initialization
1Ch Reset Programmable Interrupt Controller
20h 1-3-1-1 Test DRAM refresh
22h 1-3-1-3 Test 8742 Keyboard Controller
24h Set ES segment register to 4 GB
26h Enable A20 line
28h Autosize DRAM
29h Initialize POST Memory Manager
2Ah Clear 215 KB base RAM
2Ch 1-3-4-1 RAM failure on address line xxxx
2Eh 1-3-4-3 RAM failure on data bits  xxxx of low byte of memory bus