Acer Aspire 4930g Service Guide

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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 exclamation marks against the items in l D E  ATA / ATA P I  c o n t r o l l e r s. If 
a device has an exclamation mark, right-click on the device and uninstall and reinstall the driver.
d.Check that there are no yellow exclamation marks against the items in DVD/CD-ROM drives. If a 
device has an exclamation mark, right-click on the device and uninstall and reinstall the driver.
e.If the exclamation marker is not removed from the item in the lists, try removing any recently installed 
software and retrying the operation.
Discs Do Not Play
If discs do not play when inserted in the drive, perform the following actions one at a time to correct the 
problem.
1.Check that the disc is correctly seated in the drive tray and that the label on the disc is visible.
2.Check that the media is clean and scratch free. 
3.Try an alternate disc in the drive.
4.Ensure that AutoPlay is enabled:
a.Navigate to Start´ Control Panel´ Hardware and Sound´ AutoPlay.
b.Select Use AutoPlay for all media and devices.
c.In the Audio CD and DVD Movie fields, select the desired player from the drop down menu.
5.Check that the Regional Code is correct for the selected media:
IMPORTANT:Region can only be changed a limited number of times. After Changes remaining reaches zero, 
the region cannot be changed even Windows is reinstalled or the drive is moved to another computer.
a.Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager.
b.Double-click DVD/CD-ROM drives. 
c.Right-click DVD drive and click Properties, then click the DVD Region tab.
d.Select the region suitable for the media inserted in the drive.
Discs Do Not Burn Properly
If discs can not be burned, perform the following actions one at a time to correct the problem.
1.Ensure that the default drive is record enabled:
a.Navigate to Start´ Computer and right-click the writable ODD icon. Click Properties.
b.Select the Recording tab. In the Desktop disc recording panel, select the writable ODD from the 
drop down list. 
c.Click OK.
2.Ensure that the software used for burning discs is the factory default. If using different software, refer to 
the softwares user manual.
Playback is Choppy
If playback is choppy or jumps, perform the following actions one at a time to correct the problem.
1.Check that system resources are not running low:
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. 
						

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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 cannot detect the drive, perform the following actions one at a time to correct the problem.
1.Restart the computer and press F2 to enter the BIOS Utility. 
2.Check that the drive is detected in the ATAPI Model Name field on the Information page. 
NOTE: Check that the entry is identical to one of the ODDs specified in “Hardware Specifications and 
Configurations” on page 31.
3.Turn off the power and remove the cover to inspect the connections to the ODD. See “Disassembly 
Process” on page 58.
a.Check for broken connectors on the drive, motherboard, and cables. 
b.Check for bent or broken pins on the drive, motherboard, and cable connections. 
c.Try an alternate cable, if available. If the drive works with the new cable, the original cable should be 
replaced.
4.Reseat the drive ensuring and all cables are connected correctly.
5.Replace the ODD. See “Disassembly Process” on page 58.
Drive Read Failure
If discs cannot be read when inserted in the drive, perform the following actions one at a time to correct the 
problem.
1.Remove and clean the failed disc. 
2.Retry reading the CD or DVD. 
d.Test the drive using other discs.
e.Play a DVD movie 
f.Listen to a music CD
If the ODD works properly with alternate discs, the original disc is probably defective and should be 
replaced.
3.Turn off the power and remove the cover to inspect the connections to the ODD. See “Disassembly 
Process” on page 58.
a.Check for broken connectors on the drive, motherboard, and cables. 
b.Check for bent or broken pins on the drive, motherboard, and cable connections. 
c.Try an alternate cable, if available. If the drive works with the new cable, the original cable should be 
replaced.
4.Replace the ODD. See “Disassembly Process” on page 58. 
						

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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:
Modem Function Failure
If the internal Modem fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs: 
						

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Wireless Function Failure
If the WLAN fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
EasyTouch Button Failure
If the Acer EasyTouch buttons fail, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs: 
						

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MediaTouch Button Failure
If the Acer MediaTouch buttons fail, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs:
Fingerprint Reader Failure
If the Fingerprint Reader fails, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs: 
						

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Thermal Unit Failure
If the Thermal Unit fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs:
HDTV Switch Failure
If the HDTV Switch fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs: 
						

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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 added hardware and associated software.
7.Remove any recently added software and reboot.
8.Restore system and file settings from a known good date using System Restore. 
If the issue is not fixed, repeat the preceding steps and select an earlier time and date.
9.Run the Event Viewer to check the events log for errors. For more information see Windows Help and 
Support.
10.Roll back the mouse driver to the previous version if updated recently.
11 .Remove and reinstall the mouse driver.
12.Check the Device Manager to determine that:
•The device is properly installed. There are no red Xs or yellow exclamation marks. 
•There are no device conflicts. 
•No hardware is listed under Other Devices.
13.If the Issue is still not resolved, see “Online Support Information” on page 209.
Other Failures
If the CRT Switch, Dock, LAN Port, external MIC or Speakers, PCI Express Card, 5-in-1 Card Reader or 
Volume Wheel fail, perform the following general steps to correct the problem. Do not replace a non-defective 
FRUs:
1.Check Drive whether is OK.
2.Check Test Fixture is ok.
3.Swap M/B to Try. 
						

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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 error is detected, replace the FRU. Rerun the test to verify that there are no more errors. 
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, 
whether a short circuit is suspected, or whether the system is inoperative. 
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
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 On 
Issue” on page 152.):
1.Power-off the computer.
2.Visually check them 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.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 FRU.
7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
•System board
•LCD assembly 
						

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Jumper and Connector Locations
Top View
No.ItemDescriptionNo.ItemDescription
1 SW1 e-Key Button 11 SW3 Touch pad (right) Button
2 JP1 Digital MIC Connector 12 SW2 Touch pad (left) Button
3 JLVDS1 LCD Connector 13 LED2 Battery LED
4 JP14 Acer backlight Connector 14 LED1 Power/SUSP LED
5 JP2 Media/B Connector 15 JEXP1 Express Card Socket
6 JP4 Internal Keyboard 
Connector16 U9 South Bridge
7 JP6 Power/B Connector 17 JP7 Touch Pad Connector
8 JP8 FP/B Connector 18 JP5 Fun/B Connector
9 JP10 Bluetooth Connector 19 JP3 Speaker Connector
10 JMDC1 MDC Connector
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Bottom View
No.ItemDescriptionNo.ItemDescription
1 PJP1 AC-IN Connector 14 JHP1 Head-Phone Connector
2 PJP2 Battery Connector 15 U39 Volume control wheel
3 JCPU1 CPU Socket 16 IR1 IR receiver
4 JMXM1 MXM Board Connector 17 JREAD1 Card Reader Socket
5 JP12 Fan Connector 18 U31 North Bridge
6 JDOCK1 Dock Connector 19 JDIMM2 Memory DIMM2 
Connector
7 JRJ45 RJ45 Connector 20 JSATA2 HDD Connector
8 JCRT1 CRT Connector 21 JMINI2 Wireless Card Connector
9 JHDMI1 HDMI Connector 22 JMINI1 Robson II Connector
10 JUSB1 USB Connector 23 JSATA1 ODD Connector
11 JUSB2 USB Connector 24 JDIMM1 Memory DIMM1 
Connector
12 JLINE1 Line-In Jack 25 JP11 USB/B Connector
13 JMIC1 MIC-In Jack
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