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Acer TravelMate 4230 TravelMate 2490 - 4230 - 4280 Service Guide - Page 103

Jumper Setting, Clear CMOS Jumper

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Jumper Setting Label J3 Description Clear CMOS Jumper Note: J3 locates at bottom side of the main board as the red circle highlighted. Chapter 5 95

Section	Page
Ch.1 System Specifications	7
Features	7
System Block Diagram	10
Board Layout	11
Top View	11
Bottom View	12
Jumper Board Layout	13
Switch Board Top View	13
Media Board Top View	13
Media Board Bottom View	14
LS-2923P Power Board Top View	14
Jumper Setting	15
Your Acer Notebook tour	16
Front view	16
Closed Front View	18
Left View	20
Right View	21
Rear Panel	22
Base view	23
Indicators	24
Easy-Launch Buttons	26
Using the Keyboard	27
Lock Keys and embedded numeric keypad	27
Windows Keys	28
Hot Keys	28
Special Key	30
Acer Empowering Technology	31
Acer eDataSecurity Management	32
Acer eLock Management	33
Acer ePerformance Management	34
Acer eRecovery Management	35
Acer eSettings Management	36
Acer eNet Management	37
Acer ePower Management	38
Hardware Specifications and Configurations	41
Ch.2 System Utilities	51
BIOS Setup Utility	51
Navigating the BIOS Utility	52
Information	53
Main	55
Advanced	57
Security	58
Boot	62
Exit	63
BIOS Flash Utility	64
Ch.3 Machine Disassembly and Replacement	65
General Information	66
Before You Begin	66
Disassembly Procedure Flowchart	67
Removing the Battery Pack	69
Removing the HDD Module/Memory/System Fan/Thermal Module/ CPU/ODD Module and LCD Module	70
Removing the HDD Module	70
Removing the Memory/System Fan/Thermal Module/CPU	70
Removing the ODD Module	72
Removing the LCD Module	72
Disassembling the Main Unit	74
Separate the Main Unit Into the Upper and the Lower Case Assembly	74
Disassembling the Upper Case Assembly	74
Disassembling the Lower Case Assembly	75
Disassembling the LCD Module	77
Disassembling the External Modules	79
Disassembling the HDD Module	79
Disassembling the ODD Module	79
Ch.4 Troubleshooting	81
System Check Procedures	82
External Diskette Drive Check	82
External CD-ROM Drive Check	82
Keyboard or Auxiliary Input Device Check	82
Memory check	83
Power System Check	83
Touchpad Check	85
Power-On Self-Test (POST) Error Message	86
Index of Error Messages	87
Phoenix BIOS Beep Codes	90
Index of Symptom-to-FRU Error Message	94
Intermittent Problems	97
Undetermined Problems	98
Ch.5 Jumper and Connector Locations	99
Board Layout	99
Top View	99
Bottom View	100
Jumper Board Layout	101
Switch Board Top View	101
Media Board Top View	101
Media Board Bottom View	102
LS-2923P Power Board Top View	102
Jumper Setting	103
Ch.6 FRU (Field Replaceable Unit) List	105
Exploded Diagram	106
App.A Model Definition and Configuration	115
Aspire 5680/5630/3690 Series	115
TravelMate 4280/4230/2490 Series	132
Microsoft Windows XP Environment Test	161

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