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Acer Aspire M5811 Aspire M5811 Desktop Series Service Guide - Page 28

Frequency/Voltage Control

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Frequency/Voltage Control Parameter Spread Spectrum Description Enables or disables the reduction of the mainboard's EMI. Note: Remember to disable the Spread Spectrum feature if you are overclocking. A slight jitter can introduce a temporary boost in clock speed causing the overclocked processor to lock up. Option Enabled Disabled Chapter 2 21

Section	Page
Aspire M5811	1
Revision History	2
Copyright	3
Table of Contents	7
System Tour	8
Features	8
Block Diagram	11
System Components	12
Front Panel	12
Rear Panel	13
Hardware Specifications and Configurations	14
Power Management Function(ACPI support function)	17
System Utilities	18
CMOS Setup Utility	18
Entering CMOS setup	19
Navigating Through the Setup Utility	19
Setup Utility Menus	20
System Disassembly	33
Disassembly Requirements	33
Pre-disassembly Procedure	34
Removing the Side Panel	35
Removing the Heat Sink Fan Assembly	36
Removing the Processor	37
Removing the VGA Card	38
Removing the TV Card	39
Removing the Mode Card	39
Removing the Hard Disk Drive	40
Removing the Front Bezel	42
Removing the Optical Drive	43
Removing the Power Supply	46
Removing the Memory Modules	47
Removing the Mainboard	48
System Troubleshooting	49
Power-On Self-Test (POST)	50
POST Error Messages List	55
Error Symptoms List	62
Undetermined Problems	67
Jumper and Connector Information	68
M/B Placement	68
Jumper Setting	70
Setting Jumper	70
FRU (Field Replaceable Unit) List	76
Aspire M5811 Exploded Diagram	77
Aspire M5811 FRU List	79
Intel RAID SOP	87
1.INTEL® MATRIX STORAGE TECHNOLOGY CHECK(DOS)	87

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