Table of Contents

 

Removing the Antenna

. .58

Removing the LCD Module

. .60

Removing the Upper Cover

. .62

Removing the TouchPad Bracket

. .65

Removing the Speaker Modules

. .67

Removing the Power Board

. .69

Removing the Modem Module

. .70

Removing the Main Board

. .71

Removing the CPU Fan

. .73

Removing the Thermal Module

. .74

Removing the CPU

. .75

LCD Module Disassembly Process

. .76

LCD Module Disassembly Flowchart

. .76

Removing the LCD Bezel

. .77

Removing the Inverter Board

. .78

Removing the Camera Module

. .79

Removing the LCD Panel

. .80

Removing the LCD Brackets and FPC Cable

. .81

Removing the Antennas

. .82

Removing the MIC Module

. .83

LCD Module Reassembly Procedure

. .84

Replacing the LCD Panel

. .84

Replacing the LCD Bezel

. .88

Main Module Reassembly Procedure

. .89

Replacing the CPU

. .89

Replacing the Thermal Module

. .89

Replacing the CPU Fan Module

. .90

Replacing the Mainboard

. .90

Replacing the Modem Module

. .91

Replacing the Power Board

. .92

Replacing the Speaker Module

. .93

Replacing the TouchPad Bracket

. .95

Replacing the Upper Case

. .95

Replacing the LCD Module

. .97

Replacing the Antenna Cable

. .99

Replacing the Keyboard

.100

Replacing the Switch Cover

.101

Replacing the ODD Module

.102

Replacing the Hard Disk Drive Module

.103

Replacing the WLAN Module

.104

Replacing the DIMM Modules

.104

Replacing the Lower Covers

.105

Replacing the Battery

.106

Troubleshooting

107

Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Power On Issue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

No Display Issue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Random Loss of BIOS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

LCD Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Built-In Keyboard Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

TouchPad Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Internal Speaker Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Internal Microphone Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

HDD Not Operating Correctly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

VIII

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eMachines D720 manual 107, Viii