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Acer Aspire M3450 Acer Aspire M3450 Desktop Service Guide - Page 100

Checking Jumper Settings, Jumper Settings

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Checking Jumper Settings The following illustration shows the location of the motherboard jumpers. Pin 1 is labeled. Jumper Settings Jumper CLR_CMOS Type 3-pin Description CLEAR CMOS Setting (default) 1-2: NORMAL 2-3: CLEAR Before clearing the CMOS, make sure to turn the system off. 92 Chapter 5

Section	Page
Aspire M3450 Service Guide	1
Revision History	2
Copyright	3
Disclaimer	4
Conventions	5
Table of Contents	7
System Tour	9
Features	9
Block Diagram	13
System Components	14
Front Panel	14
Rear Panel	15
Hardware Specifications and Configurations	16
Power Management Function(ACPI support function)	19
System Utilities	20
CMOS Setup Utility	20
Entering CMOS setup	21
Navigating Through the Setup Utility	21
Setup Utility Menus	22
Main	22
Advanced	23
Power	28
Security	29
Boot Options	30
Exit	31
System Disassembly and Assembly	32
Disassembly Requirements	32
Pre-disassembly Procedure	33
Removing the Side Panel	34
Removing the Front Bezel	35
Removing the Heat Sink Fan Assembly	36
Removing the Processor	38
Removing the VGA Card	40
Removing the TV-Tuner Card	42
Removing the PCI-E Modem Card	43
Removing the Wireless Lan Card	44
Removing the Memory Modules	45
Removing the Hard Disk Drive	46
Removing the Optical Drive	48
Removing the Daughter Board	52
Removing the Power Supply	53
Removing the Mainboard	54
Removing the Top Cover	57
Removing the Power Switch and LED Cable Assembly	59
Removing the Card Reader	60
Removing the Top USB and Audio I/O Assembly	61
Assembly Requirements	63
Assembly Procedure	64
Install the Processor	65
Install the Heat Sink Fan Assembly	66
Install the Memory	68
Removing the Side Panel	69
Removing the Daughter Board	70
Removing the Cage of Hard Disk Drive	71
Removing the PCI Cover	72
Install the Power Supply	73
Install the I/O Shielding	74
Install the Main Board	75
Install the Optica Drive	77
Install the Hard Disk Drive	79
Install the Daughter Board	82
Install the System FAN	83
Install the Wireless LAN Card	84
Install the PCI-E Modem Card	85
Install the the TV-Tuner Card	86
Install the VGA Card	87
Install the Front Bezel	88
Install the Side Panel	89
System Troubleshooting	90
Hardware Diagnostic Procedure	90
System Check Procedures	91
Power System Check	91
System External Inspection	91
System Internal Inspection	91
Beep Codes	92
Checkpoints	93
Viewing BIOS checkpoints	93
Bootblock Initialization Code Checkpoints	93
Bootblock Recovery Code Checkpoints	95
BIOS Recovery	96
Jumper and Connector Information	97
M/B Placement	97
Jumper Setting	99
Setting Jumper	99
FRU (Field Replaceable Unit) List	106
Aspire M3450 Exploded Diagram	107

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