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Acer Aspire V5-431 Acer V5-471 Notebook Service Guide - Page 175

Thermal Unit Failure,

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Thermal Unit Failure 0 If the Thermal Unit fails, perform the following, one at a time. Do not replace a non-defective FRU: Figure 4-12. Thermal Unit Failure Troubleshooting 4-17

Section	Page
Aspire MS2360 Service Guide	1
CHAPTER 1 - Hardware Specifications	11
Hardware Specifications and Configurations	15
Features	15
Operating System	15
Platform	15
System Memory	15
Display	15
Graphics	15
Storage Subsystem	16
Audio Subsystem	16
Communication	17
Privacy Control	17
Power Adapter and Battery	17
Keyboard and Pointing Device	17
I/O Ports	18
Software and Tools	18
Warranty	20
Dimensions and Weight	20
Environment	20
Notebook Tour	21
Open Front View	21
Close Front View	22
Left View	23
Right View	24
Base View	25
Touchpad Basics	26
Keyboard	27
D2D Recovery	31
System Block Diagram	32
Specification Tables	33
CHAPTER 2 - System Utilities	61
System Utilities	63
BIOS Setup Utility	63
Navigating the BIOS Utility	63
BIOS Menus	64
Main	66
Security	68
Boot	71
Exit	72
BIOS Flash Utilities	73
DOS Flash Utility	74
WinFlash Utility	74
Remove HDD/BIOS Password Utilities	75
Removing the HDD Password	75
Removing the BIOS Passwords	76
Clearing the BIOS Passwords	77
Using DMI Tools	78
LAN EEPROM Utility	78
CHAPTER 3 - Machine Maintenance	79
Machine Maintenance	83
Machine Disassembly and Replacement	83
Recommended Equipment	83
Replacement Requirements	83
Pre-disassembly Instructions	84
Disassembly Process	85
External Module Disassembly Process	86
External Modules Disassembly Flowchart	86
Removing the Battery Pack	87
Removing the DIMM Cover	88
Removing the DIMM Modules	89
Removing the ODD Module	90
Removing the Keyboard	93
Main Unit Disassembly Process	95
Main Unit Disassembly Flowchart	95
Removing the Palmrest Module/Upper Case	96
Removing the Touchpad Board	99
Removing the Power Button Board	101
Removing the HDD Module	103
Removing the WLAN Module	104
Removing the Mainboard	106
Removing the Thermal Module	109
Removing the DC In Module	111
Removing the Battery Connector	112
Removing the Speaker Module	113
Removing the LCD Module	115
LCD Module Disassembly Process	117
LCD Module Disassembly Flowchart	117
Removing the LCD Bezel	118
Removing the Camera Board	119
Removing the LCD Panel	120
Removing the LCD FPC Cable	121
Removing the LCD Brackets	122
Removing the Microphone	123
LCD Module Reassembly Process	124
Reinstalling the Microphone	124
Reinstalling the LCD Brackets	125
Reinstalling the LCD FPC Cable	126
Reinstalling the LCD Panel	127
Reinstalling the Camera Board	128
Reinstalling the LCD Bezel	129
Main Unit Reassembly Process	130
Reinstalling the LCD Module	130
Reinstalling the Speaker Module	132
Reinstalling the Battery Connector	134
Reinstalling the DC In Module	135
Reinstalling the Thermal Module	136
Reinstalling the Mainboard	138
Reinstalling the WLAN Module	141
Reinstalling the HDD Module	143
Reinstalling the Power Button Board	144
Reinstalling the Touchpad Board	146
Reinstalling the Palmrest Module/Upper Case	148
External Module Reassembly Process	150
Reinstalling the Keyboard	150
Reinstalling the ODD Module	152
Reinstalling the DIMM Modules	155
Reinstalling the DIMM Cover	156
Reinstalling the Battery Pack	157
CHAPTER 4 - Troubleshooting	159
Troubleshooting	161
Introduction	161
General Information	161
Power On Issues	162
No Display Issues	163
LCD Failure	165
Keyboard Failure	166
Touchpad Failure	167
Internal Speaker Failure	168
Microphone Failure	170
USB Failure	171
WLAN Failure	172
Bluetooth Failure	173
Card Reader Failure	174
Thermal Unit Failure	175
Other Functions Failure	176
Intermittent Problems	177
Undetermined Problems	177
Error Codes	178
POST Codes	184
CHAPTER 5 - Jumper and Connector Locations	191
Jumper and Connector Locations	193
Mainboard Layout	193
Clearing Password Check and BIOS Recovery	197
Clearing the BIOS Passwords	197
Performing a BIOS Recovery	198
CHAPTER 6 - FRU List	201
FRU (Field Replaceable Unit) List	203
Exploded Diagrams	204
Main Assembly	204
LCD Assembly	206
CHAPTER 7 - Test Compatible Components	225
Test Compatible Components	227
Microsoft Windows 7 Environment Test	227
CHAPTER 8 - Online Support Information	233

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