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Acer Extensa 7620Z TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 101

Remove the four screws C holding the main board.

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20. Disconnect the USB cable from the main board. 21. Disconnect the Bluetooth cable from the BLUE1 connector on the main board. 22. Disconnect the speaker cable from the SPKR1 on the main board. 23. Remove the four screws (C) holding the main board. Step 1~4 Size (Quantity) M2 x L4 (4) Color Silver Torque 1.6 kgf-cm Chapter 3 91

Section	Page
Features	11
System Block Diagram	14
Your Acer Notebook tour	15
Front View	15
Closed Front View	16
Left View	17
Right View	18
Rear Panel	18
Bottom Panel	19
Indicators	19
Easy-Launch Buttons	20
Touchpad Basics	21
Using the Keyboard	23
Lock Keys and embedded numeric keypad	23
Windows Keys	24
Hot Keys	25
Special Key	26
Acer Empowering Technology	27
Empowering Technology password	27
Acer eNet Management	27
Acer ePower Management	29
Acer ePresentation Management	30
Acer eDataSecurity Management	31
Acer eLock Management	32
Acer eRecovery Management	33
Acer eSettings Management	34
Windows Mobility Center	35
Using the System Utilities	36
Acer Bio-Protection (for selected models)	36
NTI Shadow	36
Acer GridVista (dual-display compatible)	37
Launch Manager	38
Norton Internet Security	38
Hardware Specifications and Configurations	40
BIOS Setup Utility	51
Navigating the BIOS Utility	52
Information	53
Main	54
Advanced	56
Security	57
Boot	61
Exit	62
BIOS Flash Utility	63
Remove HDD/BIOS Utility	64
Disassembly Requirements	69
General Information	70
Pre-disassembly Instructions	70
Disassembly Process	70
External Module Disassembly Process	71
External Modules Disassembly Flowchart	71
Removing the Battery Pack	72
Removing the SD dummy card	73
Removing the PC and ExpressCard dummy cards	73
Removing the Lower Cover	74
Removing the Secondary HDD Cover	75
Removing the Secondary HDD Bracket and Connector	76
Removing the DIMM	78
Removing the WLAN Board Modules	78
Removing the Hard Disk Drive Module	79
Removing the Optical Drive Module	80
Main Unit Disassembly Process	83
Main Unit Disassembly Flowchart	83
Removing the Modem Board	83
Removing the Heatsink Fan Module	84
Removing the CPU and VGA Heatsink Module	85
Removing the CPU	87
Removing the VGA board (for Discrete model only)	87
Removing the Middle Cover and the Power Board	88
Removing the Keyboard	90
Removing the LCD Module	91
Separating the Upper Case from the Lower Case	94
Removing the Launch Board	96
Removing the Touch Pad Board Module	97
Removing the Main Board	100
Removing the ODD Board Module	102
Removing the Speaker Modules	103
Removing the USB Board	104
LCD Module Disassembly Process	106
LCD Module Disassembly Flowchart	106
Main Screw List	106
Removing the LCD Bezel	107
Removing the LCD module with the Brackets	108
Removing the Inverter Board and FPC Cable	109
Removing the LCD Brackets	110
Removing the Left and Right Hinge	111
Removing the Antennas	111
Removing the Internal Microphone and Web Camera	112
System Check Procedures	116
External Diskette Drive Check	116
External CD-ROM Drive Check	116
Keyboard or Auxiliary Input Device Check	116
Memory check	117
Power System Check	117
Touchpad Check	119
Power-On Self-Test (POST) Error Message	120
Index of Error Messages	121
Phoenix BIOS Beep Codes	124
Index of Symptom-to-FRU Error Message	129
Intermittent Problems	133
Undetermined Problems	134
Top View	135
Bottom View	136
TravelMate 7720/7320 Exploded Diagram	140
Model Definition and Configuration	150
TravelMate 7720/7320 Series	150
Microsoft® Windows® Vista Environment Test	174

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