Name: Packard Bell EasyNote LJ75
Brand: Packard
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Packard Bell EasyNote LJ75/LJ77

Service Guide

PRINTED IN TAIWAN

Service guide files and updates are available

on the ACER/CSD web; for more information,

please refer to http://csd.acer.com.tw

All manuals and user guides at all-guides.com

all-guides.com

Table of Contents7
System Specifications11
Features11
System Block Diagram15
Your Notebook Tour16
Front View16
Left View17
Right View18
Rear View18
Bottom View19
Keyboard Area (Selected Models)20
LCD Panel21
Status Indicators22
Touchpad Basics23
Using the Keyboard24
Key Types24
Windows Keys25
System Keys26
Hardware Specifications and Configurations27
System Utilities37
BIOS Setup Utility37
Navigating the BIOS Utility37
Information38
Main39
Advanced40
Security42
Power45
Boot47
Exit48
BIOS Flash Utilities49
DOS Flash Utility50
Winflash Utility52
Remove HDD/BIOS Password Utilities53
Machine Disassembly and Replacement59
Disassembly Requirements59
General Information60
Pre-Disassembly Instructions60
Disassembly Process60
External Module Disassembly Process61
External Modules Disassembly Flowchart61
Removing the Battery Pack62
Removing the SD Dummy Card63
Removing the Lower Covers64
Removing the Optical Drive Module65
Removing the DIMM Modules67
Removing the WLAN Module68
Removing the Primary HDD Module70
Removing the Secondary HDD Module72
Main Unit Disassembly Process74
Main Unit Disassembly Flowchart74
Removing the Switch Cover75
Removing the Media Board78
Removing the Keyboard79
Removing the LCD Module81
Removing the Upper Cover86
Removing the Touchpad Bracket90
Removing the Media Board FFC91
Removing the LED Board92
Removing the Speaker Module93
Removing the RTC Battery95
Removing the Modem Board96
Removing the USB Board98
Removing the Mainboard100
Removing the RJ-11 Jack101
Removing the CPU Fan103
Removing the Thermal Module104
Removing the CPU105
LCD Module Disassembly Process106
LCD Module Disassembly Flowchart106
Removing the LCD Bezel107
Removing the Camera Module108
Removing the LCD Panel109
Removing the Power Board110
Removing the LCD Brackets and FPC Cable111
Removing the Microphone Module113
Removing the Antennas114
LCD Module Reassembly Procedure116
Replacing the Antennas, Power Board, and MIC116
Replacing the LCD Panel119
Replacing the Camera Module121
Replacing the LCD Bezel122
Main Module Reassembly Procedure124
Replacing the CPU124
Replacing the Thermal Module124
Replacing the CPU Fan125
Replacing the RJ-11 Jack126
Replacing the Mainboard127
Replacing the USB Board128
Replacing the Modem Board129
Replacing the Speaker Module130
Replacing the LED Board131
Replacing the Media Board FFC131
Replacing the Touchpad Bracket132
Replacing the Upper Cover132
Replacing the LCD Module136
Replacing the Keyboard139
Replacing the Media Board140
Replacing the Switch Cover141
Replacing the Hard Disk Drive Modules143
Replacing the WLAN Module144
Replacing the DIMM Modules144
Replacing the ODD Module145
Replacing the Lower Covers145
Replacing the SD Dummy Card147
Replacing the Battery147
Troubleshooting149
Common Problems149
Power on Issue150
No Display Issue151
Random Loss of BIOS Settings152
LCD Failure153
Built-In Keyboard Failure153
Touchpad Failure154
Internal Speaker Failure155
Internal Microphone Failure157
HDD Not Operating Correctly158
ODD Failure159
USB (Right Side) Failure163
Wireless Function Failure164
Bluetooth Function Test Failure165
Easy Button Failure166
Thermal Unit Failure167
External Mouse Failure167
Other Failures168
Motherboard CMOS Discharge169
Intermittent Problems169
Undetermined Problems169
Post Codes171
Chipset POST Codes171
Sec171
Memory171
BDS & Specific Action172
Each PEIM Entry Point Used in 80_PORT174
Each Driver Entry Point Used in 80_PORT174
Each Smmdriver Entry Point Used in 80_PORT177
Jumper and Connector Locations179
Top View179
Bottom View180
LS-5022P USB Board181
LS-5024P Cap Sensor Board181
LS-5026P LED Board181
LS-5027P SW Board182
Clearing Password Check and BIOS Recovery183
Clearing Password Check183
BIOS Recovery by Crisis Disk185
FRU (Field Replaceable Unit) List187
Packard Bell Easynote LJ75/LJ77 Exploded Diagrams188
Main Assembly188
Base Assembly189
LCD Assembly190
Packard Bell Easynote LJ75/LJ77 FRU List191
Screw List198
Model Definition and Configuration200
Packard Bell Easynote LJ75 Series200
Packard Bell Easynote LJ77 Series209
Test Compatible Components211
Microsoft® Windows® 7 Environment Test212

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Packard Bell EasyNote LJ75 Specifications

General

Brand	Packard
Model	Bell EasyNote LJ75
Category	Laptop
Language	English

Packard Bell EasyNote LJ75 User Manual

Table of Contents

Questions and Answers:

Packard Bell EasyNote LJ75 Specifications