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Acer Aspire S7-391 Acer S7-391 Notebook Service Guide - Page 141

USB Failure,

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USB Failure 0 If the USB fails, perform the following, one at a time. Do not replace a non-defective FRU: Figure 4-8. USB Failure Troubleshooting 4-13

Section	Page
Aspire S7-391 Service Guide Rev 02	1
CHAPTER 1 - Hardware Specifications	9
Hardware Specifications and Configurations	11
Features	11
Operating System	11
Platform	11
System Memory	11
Display	11
Graphics	12
Storage Subsystem	12
Audio Subsystem	12
Communication	13
Privacy Control	13
Power Adapter and Battery	13
Keyboard and Pointing Device	14
I/O Ports	14
Software and Tools	15
Warranty	16
Dimensions and Weight	16
Environment	16
Notebook Tour	17
Open Front View	17
Left View	18
Right View	19
Base View	20
Touchpad Basics	21
Keyboard	22
System Block Diagram	25
Specification Tables	26
CHAPTER 2 - System Utilities	39
System Utilities	41
BIOS Setup Utility	41
Navigating the BIOS Utility	41
BIOS Menus	42
Information	42
Main	44
Security	45
Boot	49
Exit	50
BIOS Flash Utilities	51
Remove HDD/BIOS Password Utilities	52
Removing the HDD Password	52
Removing the BIOS Passwords	54
Using DMI Utility	55
Using DMI Utility in DOS Mode	55
Using DMI Utility in Windows Mode	57
CHAPTER 3 - Machine Maintenance	59
Machine Maintenance	61
Machine Disassembly and Replacement	61
Recommended Equipment	61
Replacement Requirements	61
Pre-disassembly Instructions	62
Disassembly Process	63
Removing the Lower Case	65
Removing the Battery Pack	66
Removing the Left and Right Speakers	68
Removing the RTC Battery	70
Removing the Hold Sensor Board	71
Removing the M-SATA Board	73
Removing the Small Fan	75
Removing the Big Fan	77
Removing the Touchpad Module	80
Removing the EL Small Board	83
Removing the Mainboard	85
Removing the Thermal Module	91
Removing the LED Indicator	92
Removing the Upper Case Assembly	93
Removing the Keyboard	95
Reassembly Process	97
Reinstalling the Keyboard	97
Reinstalling the Upper Case Assembly	99
Reinstalling the LED Indicator	100
Reinstalling the Thermal Module	101
Reinstalling the Mainboard	102
Reinstalling the EL Small Board	107
Reinstalling the Touchpad Module	109
Reinstalling the Big Fan	113
Reinstalling the Small Fan	116
Reinstalling the M-SATA Board	118
Reinstalling the Hold Sensor Board	120
Reinstalling the RTC Battery	122
Reinstalling the Left and Right Speakers	123
Reinstalling the Battery Pack	125
Reinstalling the Lower Case	127
CHAPTER 4 - Troubleshooting	129
Troubleshooting	131
Introduction	131
General Information	131
Power On Issues	132
No Display Issues	133
LCD Failure	135
Keyboard Failure	136
Touchpad Failure	137
Internal Speaker Failure	138
Microphone Failure	140
USB Failure	141
WLAN Failure	142
Card Reader Failure	143
Thermal Unit Failure	144
Other Functions Failure	145
Intermittent Problems	146
Undetermined Problems	146
Error Codes	147
BIOS Beep Codes	148
POST Codes	153
Component Codes	153
Progress Codes	157
CHAPTER 5 - Jumper and Connector Locations	159
Jumper and Connector Locations	161
Mainboard Layout	161
Clearing Password Check and BIOS Recovery	163
Clearing the BIOS Passwords	163
BIOS Recovery	164
CHAPTER 6 - FRU List	165
FRU (Field Replaceable Unit) List	167
Aspire S7-391 Exploded Diagrams	168
Main Assembly	168
FRU List	170
CHAPTER 7 - Test Compatible Components	177
Test Compatible Components	179
Microsoft Windows 7 Environment Test	179
CHAPTER 8 - Online Support Information	183

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