Acer 4740G User Manual Page 160
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- Table of contents
- TROUBLESHOOTING
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150 Chapter 4
Wireless Function Failure
If the WLAN/WiMAX fails, perform the following actions one at a time to correct the problem. Do not replace a
non-defective FRUs:
Bluetooth Function Failure
If the Bluetooth fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
Start
Reconnect the
Antenna to the
card
Check Antenna to
WLAN/WiMAX C ard
Check Antenna Swap the Antenna
Check WLAN/WiMAX
Card
Swap WLAN/
WiMAX Card
Check Function Board
Swap Function
Board
Swap Mainboard
OK
OK
OK
OK
NG
NG
NG
NG
Start
Reconnect the
cable to the
module
Check BT cable
connected
Check BT cable Swap the cable
Check BT Module Swap BT Module
Check Function Board
Swap Function
Board
Swap Mainboard
OK
OK
OK
OK
NG
NG
NG
NG
- Aspire 4740/4740G Series 1
- Service Guide 1
- Revision History 2
- Copyright 3
- Disclaimer 3
- Conventions 4
- Table of Contents 10
- System Specifications 11
- Environment 13
- System Block Diagram 14
- Your Acer Notebook tour 15
- Closed Front View 17
- Left View 18
- Right View 19
- Rear View 19
- Easy-Launch Buttons 21
- Indicators 21
- Using the Keyboard 23
- Windows Keys 24
- Hot Keys 25
- Special Key 26
- Using the System Utilities 27
- Chapter 1 23 33
- • Samsung LTN140AT01-G01 35
- • AUO B140XW01 35
- • LG LP140WH1 35
- • CMO N140B6 - L02 35
- System Utilities 39
- Information 40
- Security 42
- Setting a Password 43
- Removing a Password 43
- Set Supervisor Password 44
- BIOS Flash Utility 47
- DOS Flash Utility 48
- Chapter 2 39 49
- WinFlash Utility 50
- Removing BIOS Passwords: 52
- Cleaning BIOS Passwords 53
- Miscellaneous Utilities 54
- 46 Chapter 2 56
- Disassembly Requirements 57
- Chapter 3 57
- General Information 58
- Removing the Battery Pack 60
- Removing the SD Dummy Card 61
- Removing the Lower Covers 62
- Chapter 3 53 63
- Removing the WLAN Module 64
- Chapter 3 55 65
- Removing the DIMM Modules 66
- 58 Chapter 3 68
- Step Size Quantity Screw Type 68
- HDD Carrier M3*3 4 68
- Main Unit Disassembly Process 71
- Removing the Hinge Covers 73
- Removing the Switch Cover 74
- Chapter 3 65 75
- Removing the Keyboard 76
- Removing the Speaker Module 77
- 68 Chapter 3 78
- Removing the LCD Module 79
- 70 Chapter 3 80
- Chapter 3 71 81
- Chapter 3 73 83
- Removing the Upper Cover 84
- 78 Chapter 3 88
- Removing the TouchPad Bracket 89
- 80 Chapter 3 90
- Removing the Media Board 91
- 82 Chapter 3 92
- Media Board M2.5*3 2 92
- Removing the USB Board 93
- 84 Chapter 3 94
- Removing the Modem Module 95
- Removing the Bluetooth Module 96
- Chapter 3 87 97
- Bluetooth Module M2.5*3 1 97
- Removing the Mainboard 98
- Chapter 3 89 99
- Removing the RJ-11 Port 100
- Chapter 3 91 101
- Removing the Thermal Module 102
- Removing the CPU 104
- Removing the LCD Bezel 106
- Chapter 3 97 107
- Removing the Camera Module 108
- Removing the LCD Panel 109
- 100 Chapter 3 110
- Removing the Antennas 112
- Removing the MIC Module 113
- Replacing the MIC Module 114
- Replacing the Antennas 115
- Chapter 3 107 117
- Replacing the LCD Panel 118
- Chapter 3 109 119
- Replacing the Camera Module 120
- Replacing the LCD Bezel 121
- Replacing the CPU 122
- Replacing the Thermal Module 123
- Replacing the RJ-11 Port 124
- Replacing the Mainboard 125
- Replacing the Modem Module 127
- Replacing the USB Board 127
- Replacing the Media Board 128
- Chapter 3 119 129
- Chapter 3 121 131
- Replacing the Upper Cover 132
- 124 Chapter 3 134
- Replacing the LCD Module 135
- Replacing the Speaker Module 138
- Replacing the Keyboard 139
- Replacing the Switch Cover 140
- Chapter 3 131 141
- Replacing the Hinge Covers 142
- Replacing the ODD Module 143
- Replacing the DIMM Modules 144
- Replacing the WLAN Module 145
- Replacing the Lower Covers 145
- Replacing the Battery 146
- Troubleshooting 147
- Power On Issue 148
- No Display Issue 149
- Random Loss of BIOS Settings 150
- LCD Failure 151
- Built-In Keyboard Failure 151
- Touchpad Failure 152
- Internal Speaker Failure 152
- Sound Problems 153
- Internal Microphone Failure 154
- HDD Not Operating Correctly 155
- ODD Failure 156
- Discs Do Not Play 157
- Discs Do Not Burn Properly 157
- Playback is Choppy 157
- Drive Not Detected 158
- Drive Read Failure 158
- USB Failure (Rightside) 159
- Modem Function Failure 159
- Wireless Function Failure 160
- Bluetooth Function Failure 160
- EasyTouch Button Failure 161
- Media Board Failure 161
- Fingerprint Reader Failure 162
- Thermal Unit Failure 162
- External Mouse Failure 163
- Other Failures 163
- Intermittent Problems 164
- Undetermined Problems 164
- Post Codes 165
- Top View 171
- Chapter 5 171
- Bottom View 172
- Clearing Password Check 173
- BIOS Recovery by Crisis Disk 174
- Chapter 6 175
- Main Module 176
- Aspire 4740/4740G FRU List 177
- Screw List 185
- 176 Chapter 6 186
- Chapter 6 177 187
- Aspire 4740 188
- Appendix A 188
- Aspire 4740G 194
- Appendix A 198 208
- Test Compatible Components 209
- Microsoft 210
- 7 Environment Test 210
- 204 Appendix B 214
- Online Support Information 215
- 206 Appendix C 216
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