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Acer AOD257 Aspire One AOD257 and Happy 2 Netbook Service Guide - Page 134

USB Failure,

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USB Failure 0 If the USB fails, perform the following: Start OK Check USB/B to M/B cable OK Check USB/B NG Re-assemble the USB/B cable to M/B OK NG Swap USB/B and USB cable Swap M/B Figure 4-8. USB Failure 4-14 Troubleshooting

Section	Page
Hardware Specifications	11
Features	15
Operating System	15
Platform	15
System Memory	15
Display	15
Audio Subsystem	16
Graphics	17
Storage Subsystem	17
Privacy Control	17
Webcam	17
Wireless and networking	17
Dimension and Weight	17
Color options	18
Power Adapter and Battery	18
Input and Controls	18
I/O Ports	18
Optional Items	18
Warranty	19
Eco-compliance	19
Environment	19
Software	20
Notebook Tour	21
Touchpad Basics	28
Using the Keyboard	29
Windows Keys	31
Hotkeys	32
Using the communication key*	33
Specification Tables	35
Computer specifications	35
Processor	36
CPU Fan True Value Table (DC Mode)	38
CPU Fan True Value Table (AC Mode)	39
System Memory	39
Video Interface	40
BIOS	40
Keyboard	41
Hard Disk Drive (AVL components)	42
LCD Inverter (not available with this model)	43
Display Supported Resolution (LCD Supported Resolution)	44
Display Supported Resolution (GPU Supported Resolution)	44
3G Card (not available in this model)	45
Audio Interface	48
Battery	48
VRAM	48
AC Adapter	49
Card Reader	50
System DMA Specification	51
System Utilities	55
BIOS Setup Utility	57
Navigating the BIOS Utility	57
BIOS	58
Information	58
Main	60
Security	62
Boot	66
Exit	67
BIOS Flash Utilities	68
DOS Flash Utility	69
WinFlash Utility	70
Clearing BIOS Passwords	71
Removing BIOS Passwords	72
Removing Insyde HDD Password	74
Miscellaneous Tools	75
Using DMITools	75
Using STUUID	78
Using the LAN MAC EEPROM Utility	79
Crisis Disk Recovery	80
Machine Maintenance Procedures	81
Introduction	85
General Information	85
Recommended Equipment	85
Maintenance Flowchart	86
Getting Started	87
Battery Pack Removal	88
Battery Pack Installation	88
Dummy Card Removal	89
Dummy Card Installation	89
Outside Screws	90
Outside Screws Installation	90
Keyboard Removal	91
Keyboard Installation	92
Base Cover Removal	93
Base Cover Installation	93
HDD (Hard Disk Drive) Removal	94
Hard Disk Drive Installation	95
WLAN (Wireless Local Area Network) Module Removal	97
WLAN Module Installation	97
DIMM (Dual In-line Memory Module) Removal	98
DIMM Installation	98
Upper Case Removal	99
Upper Case Installation	100
Bluetooth Module Removal	101
Bluetooth Module Installation	101
Mainboard Removal	102
Mainboard Installation	103
Speakers Removal	104
Speakers Installation	104
Thermal Module Removal	105
Thermal Module Installation	106
LCD (Liquid Crystal Display) Module Removal	108
LCD Module Installation	109
LCD Bezel Removal	110
LCD Bezel Installation	111
Microphone Removal	112
Microphone Installation	113
LCD Hinge Removal	114
LCD Hinge Installation	114
LCD Panel Removal	115
LCD Panel Installation	117
LVDS Cable Removal	118
LVDS Cable Installation	119
Camera Module Removal	120
Camera Module Installation	120
Troubleshooting	121
Introduction	123
General Information	123
Power On Issues	124
No Display Issues	125
LCD Failure	128
Keyboard Failure	129
Touchpad Failure	130
Internal Speaker Failure	131
Microphone Failure	133
USB Failure	134
Other Functions Failure	135
Intermittent Problems	136
Undetermined Problems	136
Post Codes	137
Jumper and Connector Locations	145
Mainboard Jumper and Connector Locations	147
Clearing Password Check and BIOS Recovery	149
Clearing Password Check	149
Clear CMOS Jumper	150
BIOS Recovery by Crisis Disk	150
FRU (Field Replaceable Unit) List	153
Exploded Diagrams	156
FRU List	159
Screw List	180
Model Definition and Configuration	181
Aspire One D257	183
Aspire One Happy 2	291
Test Compatible Components	389
Microsoft® Windows® 7 Environment Test	392
Online Support Information	401

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