Acer Aspire 6930g Service Guide

Chapter 4131
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 screen...

132Chapter 4
2.Try an alternate disc.
3.Navigate to Start´ Computer. Check that the ODD device is displayed in the Devices with Removable 
Storage panel.
4.Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager.
a.Double-click lDE ATA/ATAPI controllers. If a device displays a down arrow, right-click on the device 
and click Enable.
b.Double-click DVD/CD-ROM drives. If the device displays a down arrow, right-click on the device and 
click Enable.
c.Check that there are no yellow...

Chapter 4133
a.Try closing some applications.
b.Reboot and try the operation again.
2.Check that the ODD controller transfer mode is set to DMA:
a.Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager.
b.Double-click IDE ATA/ATAPI controllers, then right-click ATA Device 0. 
c.Click Properties and select the Advanced Settings tab. Ensure that the Enable DMA box is 
checked and click OK. 
d.Repeat for the other ATA Devices shown if applicable.
Drive Not Detected
If Windows...

134Chapter 4
USB Failure (Rightside)
If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs: 

Chapter 4135
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 recently...

136Chapter 4
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 any...

Chapter 4137
POST Codes Tables
These tables describe the POST codes, drivers, and keys for the POST. 
Chipset POST Codes
The following table details the Chipset POST codes and components used in the POST.
POST CodeFunctionPhaseComponent
0xA0 MRC Entry PEI chipset/MRC
0x01 Enable MCHBAR PEI chipset/MRC
0x02 Check ME existence PEI chipset/MRC
0x03 Check for DRAM initialization interrupt and reset fail PEI chipset/MRC
0x04 Determine the system Memory type based on first populated 
socketPEI chipset/MRC
0x05...

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0x36 Setup DRAM control register for normal operation and enable PEI chipset/MRC
0x37 Do ZQ calibration for DDR3 PEI chipset/MRC
0x38 Perform final Dra/Drb programming, Set the mode of operation 
for the memory channelsPEI chipset/MRC
0x39 Set Enhanced addressing mode for each channel PEI chipset/MRC
0x40 Perform steps required after JEDEC init PEI chipset/MRC
0x41 Program the receive enable reference timing control register PEI chipset/MRC
0x42 Post receive enable initialization PEI...

Chapter 4139
Core POST Code Table
The following table details the core POST codes and functions used in SecureCore. 0xA0xx Launch BIOS ACMSclean PEI chipset/MRC
0xA4xx Launch BIOS ACMScheck PEI chipset/MRC
0xE5 Wait for ME ready DXE HECI/iAMT
0xE6 ME Ready DXE HECI/iAMT
POST
CodeFunctionPhaseComponent
0x00 Early Microcode update for CAR CEI / SEC Core
0x01 Enable CAR CEI / SEC Core
0x02 CAR Done, initial stack CEI / SEC Core
0xEE unknown CPU ID to load uCode CEI / SEC CPU
0xEF unknown DT CPU to load...

140Chapter 4
0x8A Initialize OEM special code Crisis Recovery Core
0x8B Initialize PIC and DMA Crisis Recovery Core
0x8C Initialize Memory type Crisis Recovery Core
0x8D Initialize Memory size Crisis Recovery Core
0x8F Initialize SMM Crisis Recovery Core
0x90 System memory test Crisis Recovery Core
0x91 Initialize interrupt vectors Crisis Recovery Core
0x92 Initialize Run Time Clock Crisis Recovery Core
0x99 Initialize security Crisis Recovery Core
0x93 Initialize video Crisis Recovery Core
0x94 Output...