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Chapter 3 61
Removing the LED Board
1. See “Removing the Upper Cover” on page 58.
2. Locate the LED Board in the Upper Cover.
3. Release the securing latch holding the LED Board FFC and remove.
4. Remove the two (2) screws and lift the LED Board clear of the Upper Cover.
Step Size Quantity Screw Type
LED Board M2.0*3widehead 2
- Acer Aspire 4820T 1
- Service Guide 1
- Revision History 2
- Copyright 3
- Disclaimer 3
- Conventions 4
- Table of Contents 10
- System Specifications 11
- Mini Card 12
- Optical Drive 12
- Communication 12
- Optional Items 14
- Warranty 15
- Environment 15
- System Block Diagram 16
- Your Acer Notebook tour 17
- Closed Front View 19
- Left View 19
- Right View 20
- Indicators 21
- TouchPad Basics 23
- Using the Keyboard 24
- Windows Keys 25
- Hot Keys 26
- • Intel® WiFi Link 1000 28
- Item Specification 30
- ACPI 2.0 32
- 24 Chapter 1 34
- System Utilities 35
- Aspire 4820T BIOS 36
- Security 38
- Setting a Password 39
- Removing a Password 39
- Changing a Password 40
- Chapter 2 31 41
- BIOS Flash Utilities 43
- DOS Flash Utility 44
- Chapter 2 35 45
- WinFlash Utility 46
- Using Boot Sequence Selector 49
- Using DMITools 50
- 42 Chapter 2 52
- Disassembly Requirements 53
- Chapter 3 53
- General Information 54
- Removing the Battery Pack 56
- Removing the SD dummy card 57
- Removing the SIM card 58
- Removing the Lower Cover 59
- Chapter 3 51 61
- Step Size Quantity Screw Type 61
- ODD Bracket M2.0*3L 2 61
- Removing the DIMM Modules 62
- Removing the WLAN Module 63
- Main Unit Disassembly Process 65
- Removing the Keyboard 66
- Chapter 3 57 67
- Removing the Upper Cover 68
- Removing the LED Board 71
- Removing the Switch Board 72
- Removing the USB Board 74
- Chapter 3 65 75
- Removing the 3G Module 76
- Removing the Bluetooth Module 77
- 68 Chapter 3 78
- Removing the Mainboard 79
- Removing the Thermal Module 81
- Removing the CPU 82
- Removing the RTC Battery 83
- Removing the Right Speaker 84
- Removing the LCD Module 85
- Removing the DC-In Cable 86
- Removing the LCD Bezel 88
- Removing the Camera Module 89
- Removing the LCD Panel 90
- Removing the FPC Cable 91
- Removing the Hinges 92
- Removing the Antennas 93
- 84 Chapter 3 94
- 86 Chapter 3 96
- Replacing the FPC Cable 97
- Replacing the LCD Panel 97
- Replacing the Webcam 98
- Replacing the LCD Bezel 99
- 90 Chapter 3 100
- Replacing the DC-In Cable 101
- Replacing the LCD Module 102
- Replacing the Right Speaker 102
- Replacing the RTC Battery 103
- Replacing the Thermal Module 104
- Replacing the CPU 104
- Replacing the Mainboard 105
- Chapter 3 97 107
- Replacing the 3G Module 108
- Chapter 3 99 109
- Replacing the USB Board 110
- Chapter 3 101 111
- Replacing the Switch Board 112
- Replacing the LED Board 112
- Replacing the Upper Cover 113
- 104 Chapter 3 114
- Chapter 3 105 115
- Replacing the Keyboard 116
- Chapter 3 107 117
- Replacing the WLAN Board 118
- Replacing the DIMM Modules 118
- Replacing the ODD Module 119
- Replacing the Lower Covers 120
- Replacing the Dummy Card 121
- Replacing the SIM card 121
- Replacing the Battery Pack 122
- Troubleshooting 123
- Power On Issue 124
- No Display Issue 125
- Random Loss of BIOS Settings 126
- LCD Failure 127
- Built-In Keyboard Failure 127
- TouchPad Failure 128
- Internal Speaker Failure 128
- Sound Problems 129
- Microphone Problems 129
- HDD Not Operating Correctly 130
- ODD Failure 131
- Discs Do Not Play 132
- Discs Do Not Burn Properly 132
- Playback is Choppy 132
- Drive Not Detected 133
- Drive Read Failure 133
- Wireless Function Failure 134
- Thermal Unit Failure 134
- External Mouse Failure 135
- Other Failures 135
- Intermittent Problems 136
- Undetermined Problems 136
- Post Codes 137
- 132 Chapter 4 142
- Chapter 5 143
- Bottom View 144
- Clearing Password Check 145
- BIOS Recovery by Crisis Disk 146
- Chapter 6 147
- LCD Assembly 148
- Chassis Assembly 149
- 140 Chapter 6 150
- Acer Aspire 4820T FRU List 151
- 142 Chapter 6 152
- Chapter 6 143 153
- 144 Chapter 6 154
- Chapter 6 145 155
- 146 Chapter 6 156
- Screw List 157
- Acer Aspire 4820T Series 158
- Appendix A 158
- Appendix A 208 220
- Test Compatible Components 221
- Microsoft 222
- 7 Environment Test 222
- Online Support Information 223
- 212 Appendix C 224
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