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Acer Aspire M5400 Service Guide - Page 37

Removing the Heat Sink Fan Assembly

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Removing the Heat Sink Fan Assembly WARNING:The heat sink becomes very hot when the system is on. NEVER touch the heat sink with any metal or with your hands. 1. Disconnect the fan cable from the mainboard. 2. Use a long-nosed screwdriver to loosen the four screws on the heat sink, in the order as shown below. 30 Chapter 3

Section	Page
Aspire M5400(G) Service Guide	1
Revision History	2
Copyright	3
Disclaimer	4
Conventions	5
Table of Contents	7
System Tour	8
Features	8
Block Diagram	12
System Components	13
Front Panel	13
Rear Panel	14
Hardware Specifications and Configurations	15
Processor	15
BIOS	15
IOS Hotkey List	15
Main Board Major Chips	15
Memory Combinations	16
System Memory	16
Audio Interface	16
SATA Interface	17
USB Port	17
Environmental Requirements	17
Power Management	17
Power Management Function(ACPI support function)	18
Device Standby Mode	18
Global Standby Mode	18
Suspend Mode	18
ACPI	18
System Utilities	19
CMOS Setup Utility	19
Entering CMOS setup	20
Navigating Through the Setup Utility	20
Setup Utility Menus	21
System Disassembly	34
Disassembly Requirements	34
Pre-disassembly Procedure	35
Removing the Side Panel	36
Removing the Heat Sink Fan Assembly	37
Removing the Processor	39
Removing the Memory Modules	40
Removing the VGA Card	41
Removing the Mode Card	42
Removing the Front Bezel	43
Removing Rear USB Board	44
Removing the Hard Disk Drive	45
Removing the Optical Drive	47
Removing Cables	48
Removing the removable HDD bay	49
Removing the Power Supply	50
Removing the Mainboard	52
System Troubleshooting	54
System Check Procedures	55
Beep Codes	56
Checkpoints	57
BIOS Recovery	60
Jumper and Connector Information	61
M/B Placement	61
Jumper Setting	63
Setting Jumper	63
FRU (Field Replaceable Unit) List	74
Aspire M5400(G) Exploded Diagram(AM551 ASSY)	75
Aspire M5400(G) Exploded Diagram(AM550 ASSY)	76

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