Aspire 8943G Series_SG - Acer Support

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6. If the computer boots correctly, add the devices one by one until the failure point is discovered. Reseat the memory modules. 7. Remove the drives (see “Disassembly Process” on page 47). 8. If the Issue is still not resolved, see “Online Support Information” on page 349. Abnormal Video Display If video displays abnormally, perform the following actions one at a time to correct the problem. 1. Reboot the computer. 2. If permanent vertical/horizontal lines or dark spots display in the same location, the LCD is faulty and should be replaced. See “Disassembly Process” on page 47. 3. If extensive pixel damage is present (different colored spots in the same locations on the screen), the LCD is faulty and should be replaced. See “Disassembly Process” on page 47. 4. Adjust the brightness to its highest level. See the User Manual for instructions on adjusting settings. NOTE: Ensure that the computer is not running on battery alone as this may reduce display brightness. If the display is too dim at the highest brightness setting, the LCD is faulty and should be replaced. See “Disassembly Process” on page 47. 5. Check the display resolution is correctly configured: a. Minimize or close all Windows. b. If display size is only abnormal in an application, check the view settings and control/mouse wheel zoom feature in the application. c. If desktop display resolution is not normal, right-click on the desktop and select Personalize� Display Settings. d. Click and drag the Resolution slider to the desired resolution. e. Click Apply and check the display. Readjust if necessary. 6. Roll back the video driver to the previous version if updated. 7. Remove and reinstall the video driver. 8. 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. 9. If the Issue is still not resolved, see “Online Support Information” on page 349. 10. Run the Windows Memory Diagnostic from the operating system DVD and follow the onscreen prompts. 11. If the Issue is still not resolved, see “Online Support Information” on page 349. Random Loss of BIOS Settings If the computer is experiencing intermittent loss of BIOS information, perform the following actions one at a time to correct the problem. 1. If the computer is more than one year old, replace the CMOS battery. 2. Run a complete virus scan using up-to-date software to ensure the computer is virus free. 3. If the computer is experiencing HDD or ODD BIOS information loss, disconnect and reconnect the power and data cables between devices. If the BIOS settings are still lost, replace the cables. 4. If HDD information is missing from the BIOS, the drive may be defective and should be replaced. 5. Replace the Motherboard. 174 Chapter 4
6. If the Issue is still not resolved, see “Online Support Information” on page 349. LCD Failure If the LCD fails, perform the following actions one at a time to correct the problem. Do not replace nondefective FRUs: Start Check LCD module? OK Check MB LCD connector and cable ? Swap M/B Swap LCD cable /LCD panel Chapter 4 175 OK NG OK NG Reassemble Re- plug LCD cable
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Aspire 8943G Series Service Guide S
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Copyright Copyright © 2010 by Acer
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Preface Before using this informati
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Table of Contents VIII Removing the
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Table of Contents X
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TV Tuner Graphics • Digital TV-tu
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Privacy control • Acer Bio-Protec
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System Block Diagram Note: HM55 doe
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# Icon Item Description 6 Touchpad/
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Right View # Icon Item Description
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TouchPad Basics The following items
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Windows Keys The keyboard has two k
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Special Keys On models that support
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Core Logic Specifications Item Spec
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VRAM Item Specification Chipset AMD
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BIOS Item Specification BIOS vendor
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Bluetooth Bluetooth Controller Item
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I/O Ports Item Specification I/O su
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AC Adapter Item Specification Input
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30 Chapter 1
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Information The Information screen
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Security The Security screen contai
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Changing a Password 1. Use the ↑
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Exit The Exit screen allows you to
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4. In flash BIOS, the message Pleas
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Removing BIOS Passwords: If you key
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3. Enter the required key number of
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Pre-disassembly Instructions Before
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External Module Disassembly Process
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Removing the Battery Pack 1. Turn t
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Removing the Base Door 1. See “Re
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4. Pull the tab horizontally to sli
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Removing the WLAN Module 1. See “
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3. Remove the one (1) screw. Ensure
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4. Remove two (2) screws from the H
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4. Remove the two (2) screws from t
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4. Carefully flip the keyboard over
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Step Screw Quantity Part No. Therma
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7. Disconnect the Bluetooth cable (
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12. Remove the LCD module from the
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Removing the Bluetooth Module 1. Se
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Removing the Mainboard to Touchpad
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4. Unlock the connector securing th
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4. Unlock the connector and disconn
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3. Peel the cable off the adhesive.
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3. Peel the cable off the adhesive.
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Removing the Mainboard 1. See “Re
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Removing the RTC Battery 1. See “
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Removing the CPU 1. See “Removing
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Removing the Subwoofer and Back Spe
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6. Remove two (2) screws from the s
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Removing the DC-In Cable Assembly 1
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4. Lift the speaker from the lower
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LCD Module Disassembly Process IMPO
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3. Insert a plastic pry to separate
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3. Pry the bezel away starting at t
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Removing the LCD Panel 1. See “Re
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8. Remove the adhesive tape securin
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3. Remove the two (2) securing scre
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4. Lift the power board clear of th
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3. Replace the two (2) screws to se
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4. Secure the arcade board cable to
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6. Replace six (6) screws on the LC
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Replacing the Camera Board 1. Place
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3. Replace six (6) screws on the gl
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Main Unit Reassembly Process Replac
Page 134 and 135: 5. Replace the two (2) screws to se
Page 136 and 137: Replacing the TV Tuner Cable Assemb
Page 138 and 139: 3. Run the cable in the cable chann
Page 140 and 141: 6. Complete the assembly by running
Page 142 and 143: Replacing the CPU IMPORTANT: The CP
Page 144 and 145: 4. Replace the five (5) non-captive
Page 146 and 147: 2. Replace the two (2) screws to se
Page 148 and 149: Replacing the USB Board 1. Place th
Page 150 and 151: Replacing the LAN Board 1. Place th
Page 152 and 153: Replacing the Finger Print Board 1.
Page 154 and 155: 6. Feed the end of the cable throug
Page 156 and 157: 5. Use a strip of adhesive tape to
Page 158 and 159: Replacing the Bluetooth Module 1. C
Page 160 and 161: Replacing the Microphone Cable 1. P
Page 162 and 163: 3. Place the LCD module on the chas
Page 164 and 165: 7. Replace the thirteen (13) screws
Page 166 and 167: 12. Adhere the LVDS cable to the up
Page 168 and 169: 3. Replace the keyboard by first li
Page 170 and 171: 4. Push the ODD completely into the
Page 172 and 173: 4. Grasp the tab and slide the HDD
Page 174 and 175: Replacing the TV Tuner Module 1. In
Page 176 and 177: 3. Connect the WLAN antenna cables.
Page 178 and 179: 4. Grasp the tab and slide the HDD
Page 180 and 181: Replacing the Battery 1. Hold the r
Page 182 and 183: Power On Issue If the system doesn
Page 186 and 187: Built-In Keyboard Failure If the bu
Page 188 and 189: Internal Speaker Failure If the int
Page 190 and 191: 4. Right-click on the microphone an
Page 192 and 193: Intermittent Problems Intermittent
Page 194 and 195: Functionality Name (Include\ PostCo
Page 196 and 197: Functionality Name (Include\ PostCo
Page 198 and 199: 188 Chapter 4
Page 200 and 201: Mainboard Bottom View PJ2: DC-IN Co
Page 202 and 203: BIOS Recovery by Crisis Disk BIOS R
Page 204 and 205: LCD Assembly 1 2 3 4 Item Descripti
Page 206 and 207: CABLE CATEGORY Acer Description Ace
Page 208 and 209: CATEGORY Acer Description AcerPN CP
Page 210 and 211: KEYBOARD CATEGORY Acer Description
Page 212 and 213: CATEGORY Acer Description AcerPN DV
Page 214 and 215: CATEGORY Acer Description AcerPN AS
Page 216 and 217: MEMORY HEATSINK CATEGORY Acer Descr
Page 218 and 219: 208 Chapter 6
Page 220 and 221: Model AS8943G- 728G1.28T Wn AS8943G
Page 222 and 223: Model AS8943G- 724G1TMn AS8943G- 72
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Page 226 and 227: Model AS8943G- 728G1.28T Bn AS8943G
Page 228 and 229: Model AS8943G- 728G1.28T Bn AS8943G
Page 230 and 231: Model AS8943G- 728G1TBn AS8943G- 72
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Model AS8943G- 728G64Bn AS8943G- 72
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Model AS8943G- 724G64Mn AS8943G- 72
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Model AS8943G- 436G1TBn AS8943G- 43
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Model Country Acer P/N BOM Name CPU
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258 Appendix A AS8943G- 724G1TMn Be
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262 Appendix A AS8943G- 724G64Mn Ea
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264 Appendix A AS8943G- 724G64Mn Mi
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266 Appendix A AS8943G- 724G64W n C
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268 Appendix A AS8943G- 728G1.28 TB
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270 Appendix A AS8943G- 728G1TBn Au
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272 Appendix A AS8943G- 728G1TBn Se
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274 Appendix A AS8943G- 728G64Bn Gr
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Model Country Acer P/N VRAM 1 AS894
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Model Country AS8943G- 434G1TBn AS8
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Model Country AS8943G- 434G64Mn AS8
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Model Country AS8943G- 544G1TMn AS8
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Model Country AS8943G- 724G1TMn AS8
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Model Country AS8943G- 728G1.28T Bn
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Model Country AS8943G- 728G1.28T Bn
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Model Country AS8943G- 728G64Bn AS8
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Model Country Acer P/N Wireless LAN
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Vendor Type Description P/N WD N250
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Vendor Type Description P/N NONE SO
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348 Appendix B
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350
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N O P S T 352 Model Definition 209
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Aspire 8943G Series_SG - Acer Support

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