Acer Aspire 4820T_SG - Acer Support

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Power On Issue If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Computer Shutsdown Intermittently If the system powers off at intervals, perform the following actions one at a time to correct the problem. 1. Check the power cable is properly connected to the computer and the electrical outlet. 2. Remove any extension cables between the computer and the outlet. 3. Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly into a known good electrical outlet. 4. Disconnect the power and open the casing to check the Thermal Unit (see “Thermal Unit Failure” on page 124) and fan airways are free of obstructions. 5. Remove all external and non-essential hardware connected to the computer that are not necessary to boot the computer to the failure point. 6. Remove any recently installed software. 7. If the Issue is still not resolved, see “Online <strong>Support</strong> Information” on page 215. 114 Chapter 4
No Display Issue If the Display doesn’t work, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: No POST or Video If the POST or video doesn’t display, perform the following actions one at a time to correct the problem. 1. Make sure that the internal display is selected. On this notebook model, switching between the internal display and the external display is done by pressing Fn+F5. Reference Product pages for specific model procedures. 2. Make sure the computer has power by checking at least one of the following occurs: • Fans start up • Status LEDs light up If there is no power, see “Power On Issue” on page 114. 3. Drain any stored power by removing the power cable and battery and holding down the power button for 10 seconds. Reconnect the power and reboot the computer. 4. Connect an external monitor to the computer and switch between the internal display and the external display is by pressing Fn+F5 (on this model). If the POST or video appears on the external display, see “LCD Failure” on page 117. 5. Disconnect power and all external devices including port replicators or docking stations. Remove any memory cards and CD/DVD discs. Restart the computer. If the computer boots correctly, add the devices one by one until the failure point is discovered. 6. Reseat the memory modules. 7. Remove the drives (see “Disassembly Process” on page 44). 8. If the Issue is still not resolved, see “Online <strong>Support</strong> Information” on page 215. Chapter 4 115
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Acer Aspire 4820T Service Guide Ser
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Copyright Copyright © 2010 by Acer
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Preface Before using this informati
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2 Removing the USB Board 64 Removin
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Table of Contents System Specificat
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Table of Contents Built-In Keyboard
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System Specifications Features Belo
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Privacy control • BIOS user, supe
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Warranty Environment • External U
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Your Acer Notebook tour After knowi
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Closed Front View Left View 1 No. I
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Bottom View 1 2 3 No. Icon Item Des
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TouchPad Basics The following items
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Windows Keys The keyboard has two k
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Hardware Specifications and Configu
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Specifications • IEEE 802.11b/g a
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Applicable disc formats Item Specif
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Temperature Range (°C) Operating S
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System Utilities BIOS Setup Utility
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Main The Main screen allows the use
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Setting a Password Follow these ste
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Boot This menu allows the user to d
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BIOS Flash Utilities The BIOS flash
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4. In flash BIOS, the message Pleas
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Remove HDD/BIOS Password Utilities
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Using Boot Sequence Selector The Bo
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Using the LAN MAC EEPROM Utility Yo
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Machine Disassembly and Replacement
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External Module Disassembly Process
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Removing the SD dummy card 1. Push
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Removing the Lower Cover 1. See “
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Step Size Quantity Screw Type ODD B
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Removing the WLAN Module 1. See “
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Main Unit Disassembly Process Main
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4. Release each clip, working from
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3. Disconnect A as shown. 4. Releas
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Removing the Power Switch Board 1.
Page 77 and 78: Removing the Left Speaker Module 1.
Page 79 and 80: 5. Lift the USB Board upward away f
Page 81 and 82: Removing the Bluetooth Module 1. Se
Page 83 and 84: Step Size Quantity Screw Type LCD M
Page 85 and 86: Step Size Quantity Screw Type Mainb
Page 87 and 88: Removing the CPU 1. See “Removing
Page 89 and 90: Removing the Right Speaker 1. See S
Page 91 and 92: LCD Module Disassembly Process LCD
Page 93 and 94: 4. Lift the Bezel clear of the LCD
Page 95 and 96: Removing the FPC Cable 1. See “Re
Page 97 and 98: Removing the Antennas 1. See “Rem
Page 99 and 100: LCD Module Reassembly Procedure Rep
Page 101 and 102: Replacing the FPC Cable Attach the
Page 103 and 104: Replacing the LCD Bezel 1. Locate t
Page 105 and 106: Main Module Reassembly Procedure Re
Page 107 and 108: 2. Replace the two (2) screws to se
Page 109 and 110: 3. Align the screw holes on the The
Page 111 and 112: 7. Snap the FPC cable into place. 8
Page 113 and 114: Replacing the USB Board 1. Replace
Page 115 and 116: Replacing the Function Board 1. Rep
Page 117 and 118: 4. Replace the eight (8) securing s
Page 119 and 120: Replacing the Keyboard 1. Place the
Page 121 and 122: Replacing the WLAN Board 1. Insert
Page 123 and 124: Replacing the Lower Covers 1. Repla
Page 125 and 126: Replacing the Battery Pack 1. Slide
Page 127: Troubleshooting Common Problems Use
Page 131 and 132: LCD Failure If the LCD fails, perfo
Page 133 and 134: Sound Problems If sound problems ar
Page 135 and 136: ODD Failure If the ODD fails, perfo
Page 137 and 138: . Double-click IDE ATA/ATAPI contro
Page 139 and 140: External Mouse Failure If an extern
Page 141 and 142: Post Codes These tables describe th
Page 143 and 144: Functionality Name (Include\ PostCo
Page 145 and 146: Functionality Name (Include\ PostCo
Page 147 and 148: Jumper and Connector Locations Top
Page 149 and 150: Clearing Password Check and BIOS Re
Page 151 and 152: FRU (Field Replaceable Unit) List C
Page 153 and 154: No. Description Acer P/N No. Descri
Page 155 and 156: Acer Aspire 4820T FRU List ADAPTER
Page 157 and 158: Category Part Name Description CPU/
Page 159 and 160: KEYBOARD Category Part Name Descrip
Page 161 and 162: Category Part Name Description LCD
Page 163 and 164: HEATSINK SPEAKER Category Part Name
Page 165 and 166: Chapter 6 151
Page 167 and 168: Country Luxembour g LX.PSE 02.159 B
Page 169 and 170: Country Acer Part No Thailand LX.PS
Page 171 and 172: Country South Africa LX.PSE 02.091
Page 173 and 174: Country Eastern Europe Acer Part No
Page 175 and 176: Country Eastern Europe LX.PSE 02.02
Page 177 and 178: Country Acer Part No Turkey LX.PSG
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Country Spain LX.PSG 02.081 Denmark
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Country South Africa LX.PSG 02.050
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Country Eastern Europe Serbia/ Mace
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Country Holland LX.PSN 02.085 Belgi
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Country Middle East LX.PSN 02.041 S
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Model Country AS4820TG- 524G64Mn AS
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Model Country AS4820T- 333G32Mn AS4
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Model Country Acer Part No Memory 1
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Test Compatible Components Appendix
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Item Vendor Description P/N ADAPTER
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Item Vendor Description P/N 90W LIT
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Item Vendor Description P/N 6CELL3.
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Item Vendor Description P/N BLUETOO
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Item Vendor Description P/N 1.3M Li
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Item Vendor Description P/N Ci7620M
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Item Vendor Description P/N Ci3330M
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Item Vendor Description P/N N500GB5
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Item Vendor Description P/N SSD2516
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Item Vendor Description P/N NLED14W
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Item Vendor Description P/N SO2GBII
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Item Vendor Description P/N SO4GBII
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Item NB CHIPSET Vendor Description
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Item Vendor Description P/N NSM8XS9
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Item Vendor Description P/N PIFA WN
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Online Support Information This sec
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A B C D E F AFLASH Utility 27 Anten
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