Packard-bell LJ77 User Manual Page 164
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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154 Chapter 4
Wireless Function Failure
If the WLAN fails, perform the following actions one at a time to correct the problem. Do not replace non-
defective FRUs:
Start
Check antenna to
WL /WiMax card
ok
Check antenna
ok
Check WL/
WiMax card
ok
Check
function /B
Swap M/B
NG
Re-assemble the
antenna to WL /
WiMax card
OK
NG Swap the antenna
OK
Swap WL/WiMax
card
Swap function/B
OK
OK
NG
NG
- Service Guide 1
- Revision History 2
- Copyright 3
- Disclaimer 3
- Conventions 4
- Table of Contents 10
- System Specifications 11
- Storage subsystem* 12
- Optical Drive* 12
- Dimensions and Weight 12
- Communication 12
- Privacy control 13
- Special Keys and Controls 13
- I/O Ports 13
- Software* 13
- Optional 14
- Environment 14
- System Block Diagram 15
- Your Notebook tour 16
- Left View 17
- Right View 18
- Rear View 18
- LCD Panel 21
- Status Indicators 22
- TouchPad Basics 23
- Using the Keyboard 24
- Windows Keys 25
- System Keys 26
- System Utilities 37
- Information 38
- Advanced 40
- Security 42
- Setting a Password 43
- Removing a Password 43
- Changing a Password 44
- Chapter 2 37 47
- BIOS Flash Utilities 49
- DOS Flash Utility 50
- Chapter 2 41 51
- WinFlash Utility 52
- Using Boot Sequence Selector 55
- Using DMITools 56
- Using the LAN Utility 57
- 48 Chapter 2 58
- Disassembly Requirements 59
- Chapter 3 59
- General Information 60
- Removing the Battery Pack 62
- Removing the SD dummy card 63
- Removing the Lower Covers 64
- Removing the DIMM Modules 67
- Removing the WLAN Module 68
- Chapter 3 61 71
- Chapter 3 63 73
- HDD Carrier M3*3 4 73
- Main Unit Disassembly Process 74
- Removing the Switch Cover 75
- 66 Chapter 3 76
- Chapter 3 67 77
- Removing the Media Board 78
- Removing the Keyboard 79
- 70 Chapter 3 80
- Removing the LCD Module 81
- 72 Chapter 3 82
- Chapter 3 75 85
- Removing the Upper Cover 86
- Chapter 3 79 89
- Lower Cover as shown 89
- Removing the TouchPad Bracket 90
- Removing the Media Board FFC 91
- Removing the LED Board 92
- Removing the Speaker Module 93
- 84 Chapter 3 94
- Removing the RTC Battery 95
- Removing the Modem Board 96
- Chapter 3 87 97
- Removing the USB Board 98
- Chapter 3 89 99
- Removing the Mainboard 100
- Removing the RJ-11 Jack 101
- 92 Chapter 3 102
- Removing the CPU Fan 103
- Removing the Thermal Module 104
- Removing the CPU 105
- Removing the LCD Bezel 107
- Removing the Camera Module 108
- Removing the LCD Panel 109
- Removing the Power Board 110
- 102 Chapter 3 112
- Step Size Quantity Screw Type 112
- LCD Brackets M2*3 6 112
- Chapter 3 103 113
- Removing the Antennas 114
- Chapter 3 105 115
- 108 Chapter 3 118
- Replacing the LCD Panel 119
- Replacing the Camera Module 121
- Replacing the LCD Bezel 122
- Chapter 3 113 123
- Replacing the CPU 124
- Replacing the Thermal Module 124
- Replacing the CPU Fan 125
- Replacing the RJ-11 Jack 126
- Replacing the Mainboard 127
- Replacing the USB Board 128
- Replacing the Modem Board 129
- Replacing the Speaker Module 130
- Replacing the LED Board 131
- Replacing the Media Board FFC 131
- Replacing the Upper Cover 132
- Chapter 3 123 133
- 124 Chapter 3 134
- Chapter 3 125 135
- Replacing the LCD Module 136
- 128 Chapter 3 138
- Replacing the Keyboard 139
- Replacing the Media Board 140
- Replacing the Switch Cover 141
- Replacing the WLAN Module 144
- Replacing the DIMM Modules 144
- Replacing the ODD Module 145
- Replacing the Lower Covers 145
- Replacing the SD Dummy Card 147
- Replacing the Battery 147
- 138 Chapter 3 148
- Troubleshooting 149
- Power On Issue 150
- No Display Issue 151
- Random Loss of BIOS Settings 152
- LCD Failure 153
- Built-In Keyboard Failure 153
- TouchPad Failure 154
- Internal Speaker Failure 155
- Internal Microphone Failure 157
- HDD Not Operating Correctly 158
- ODD Failure 159
- Discs Do Not Play 160
- Discs Do Not Burn Properly 160
- Playback is Choppy 161
- Drive Not Detected 161
- Drive Read Failure 161
- 152 Chapter 4 162
- USB (Right Side) Failure 163
- Wireless Function Failure 164
- Re-assemble BT 165
- Easy Button Failure 166
- Thermal Unit Failure 167
- External Mouse Failure 167
- Other Failures 168
- Motherboard CMOS Discharge 169
- Intermittent Problems 169
- Undetermined Problems 169
- Post Codes 171
- BDS & Specific action: 172
- Chapter 4 163 173
- Code Description 173
- 168 Chapter 4 178
- Chapter 5 179
- Bottom View 180
- LS-5022P USB Board 181
- LS-5024P Cap Sensor Board 181
- LS-5026P LED Board 181
- LS-5027P SW Board 182
- Clearing Password Check 183
- BIOS Recovery by Crisis Disk 185
- 176 Chapter 5 186
- Chapter 6 187
- Main Assembly 188
- Base Assembly 189
- LCD Assembly 190
- Chapter 6 181 191
- 182 Chapter 6 192
- Chapter 6 183 193
- 184 Chapter 6 194
- Chapter 6 185 195
- 186 Chapter 6 196
- Chapter 6 187 197
- Screw List 198
- Chapter 6 189 199
- Appendix A 200
- Test Compatible Components 211
- Microsoft 212
- 7 Environment Test 212
- 206 Appendix B 216
- Online Support Information 217
- 208 Appendix C 218
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