Packard-bell LJ77 User Manual download pdf (Page 98)

88 Chapter 3

Removing the USB Board

1. See “Removing the Upper Cover” on page 76.

2. Disconnect the USB Board cable from the Mainboard connector.

3. Lift the USB cable away from Lower Cover to detach the adhesive.

4. Remove the single screw securing the USB Board to the Lower Cover.

Step Size Quantity Screw Type

USB Board M2.5*5 1

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 221 222

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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Packard-bell LJ77 User Manual Page 98

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