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Acer TravelMate 2420 TravelMate 2420 / Aspire 3620 Service Guide - Page 13

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Bottom View NOTE: This is engineering sample. The image above may not be exactly the same as the real main board you get. 1 USB2 USB port 2 USB3 USB port 3 USB4 USB port 4 LAN1 RJ11+RJ45 (Modem Port+ Ethernet Port) 5 MDCW Modem Cable Connector 1 6 CRT1 External Display Port 7 MDC Modem Board Connector 8 U41 CPU Socket 9 U38 North Bridge () 10 FAN1 System Fan Cable Connector 11 BAT1 Battery Connector 12 U South Bridge () 13 ODD1 ODD Connector 14 WIN1 Wireless LAN Card Slotr 15 DM1 DIMM Slot1 16 DM3 DIMM Slot2 17 U44 Keyboard Controller (ENE KB3910SF) 18 U49 BIOS ROM 19 U32 Audio Codec (Realtek ACL) 20 LIN1 Line-in Jack 21 MIC2 Headphones/Speakers/Line-Out Jack 22 LOUT1 Line-in Jack 23 PC1 PC Card Slot 24 HDD1 HDD Connector Chapter 1 5

Section	Page
Aspire 3620/TravelMate 2420 Service Guide	1
Revision History	2
Copyright	3
Disclaimer	3
Conventions	4
Preface	5
Table of Contents	7
Ch.1 System Specifications	9
Features	9
System Block Diagram	11
Board Layout	12
Top View	12
Bottom View	13
Your Acer Notebook tour	15
Aspire 3620 front View	15
TravelMate 2420 front view	16
Closed Front View	17
Left View	18
Right View	18
Rear Panel	19
Bottom Panel	19
Indicators	20
Easy-Launch Buttons	21
Touchpad Basics	22
Using the Keyboard	24
Lock Keys and embedded numeric keypad	24
Windows Keys	25
Hot Keys	25
Special Key	27
Acer Empowering Technology	28
Acer eDataSecurity Management	28
Acer eLock Management	30
Acer ePerformance Management	31
Acer eRecovery Management	32
Acer eSettings Management	33
Acer ePower Management	34
Hardware Specifications and Configurations	37
Ch.2 System Utilities	45
BIOS Setup Utility	45
Navigating the BIOS Utility	46
Information	47
Main	48
Security	50
Boot	54
Exit	55
BIOS Flash Utility	56
Ch.3 Machine Disassembly and Replacement	57
General Information	58
Before You Begin	58
Disassembly Procedure Flowchart	59
Removing the Battery Pack	61
Removing the Wireless LAN Card/the HDD Module/the Memory/the ODD Module and the LCD Module	62
Removing the Memory and the HDD Module	62
Removing the ODD Module	63
Removing the LCD Module	63
Disassembling the Main Unit	66
Separate the Main Unit Into the Upper and the Lower Case Assembly	66
Disassembling the Lower Case Assembly	66
Disassembling the Upper Case Assembly	68
Disassembling the LCD Module	70
Disassembling the External Modules	72
Disassembling the HDD Module	72
Disassembling the ODD Module	72
Ch.4 Troubleshooting	73
System Check Procedures	74
External Diskette Drive Check	74
External CD-ROM Drive Check	74
Keyboard or Auxiliary Input Device Check	74
Memory check	75
Power System Check	75
Touchpad Check	77
Power-On Self-Test (POST) Error Message	78
Index of Error Messages	79
Phoenix BIOS Beep Codes	82
Index of Symptom-to-FRU Error Message	86
Intermittent Problems	89
Undetermined Problems	90
Ch.5 Jumper and Connector Locations	91
Top View	91
Bottom View	92
Ch.6 FRU (Field Replaceable Unit) List	93
Aspire 3620/TravelMate 2420 Exploded Diagram	94

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