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Acer TravelMate 4020 TravelMate 4020 Service Guide - Page 64

Then remove another two screws holding the speaker set on the other side., Then take out

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13. Then remove another two screws holding the speaker set on the other side. 14. Then take out the speaker set from the lower case. 58 Chapter 3

Section	Page
TravelMate 4020	1
Revision History	2
Copyright	3
Disclaimer	3
Conventions	4
Preface	5
Ch,1 System Specifications	7
Features	7
Mainboard Placement	10
Top View	10
Rear View	11
Block Diagram	13
Outlook View	14
Open View	14
Front Panel	15
Left View	16
Right View	17
Rear View	18
Bottom View	19
Indicators	20
Easy-launch buttons	21
Touchpad	22
Touchpad Basics	22
Using the Keyboard	23
Lock keys and embedded numeric keypad	23
Using System Utilities	27
Acer eManager	27
Launch Manager	28
Hardware Specifications and Configurations	29
Ch.2 System Utilities	39
BIOS Setup Utility	39
Information	40
Main	42
Advanced	44
Security	46
Set Supervisor/User Password	47
Characters 0-9,A-Z (not case sensitive)	47
Boot	49
Exit	50
Ch.3 Machine Disassembly and Replacement	51
General Information	52
Before You Begin	52
Disassembly Procedure Flowchart	54
Removing the Battery Pack	56
Removing the HDD Module/the memory and the Wireless LAN Card/the Thermal Module and the CPU/ODD a...	57
Removing the HDD Module	57
Removing the Memory and the Wireless LAN Card	57
Removing the Thermal Module and CPU	58
Removing the ODD Module	59
Removing the LCD Module	60
Disassembling the Main Unit	61
Separate the Main Unit Into the Upper and the Lower Case Assembly	61
Disassembling the Upper Case Assembly	62
Disassembling the Lower Case Assembly	63
Disassembling the LCD Module	65
Disassembling the External Modules	67
Disassembling the Optical Drive Module	67
Ch.4 Troubleshooting	69
System Check Procedures	70
External Diskette Drive Check	70
External CD-ROM Drive Check	70
Keyboard or Auxiliary Input Device Check	70
Memory check	71
Power System Check	71
Touchpad Check	72
Power-on Self-Test Error Messages	73
Index of Error Messages	74
Phoenix BIOS Beep Codes	77
Index of Symptom-to-FRU Error Message	81
Intermittent Problems	84
Undetermined Problems	85
Ch.5 Jumper and Connector Locations	87
Top View	87
Rear View	88
RTC Jumper	90
Ch.6 FRU (Field Replaceable Unit) List	91

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