Packard-bell LJ77 User Manual Page 127
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Chapter 3 117
Replacing the Mainboard
1. Ensure that the Mainboard is face up (the CPU is not visible). Place the Mainboard in the chassis, left side
first (1), then rotate it downward into position (2).
2. Ensure that the RJ-11 (Modem) cable is accessible when the Mainboard is replaced as shown.
3. Replace the single securing screw in the mainboard.
(1)
(2)
- 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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