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Acer Aspire 4349 Acer Aspire 4349, 4749, 4749Z Notebook Service Guide - Page 150

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
CPU	15
Chipset	15
System Memory	15
Display	15
Audio	16
Graphics	16
Storage	16
Optical Media Drive	16
Webcam	16
Wireless and Networking	17
Privacy Control	17
Dimension and Weight	17
Power Adapter and Battery	17
Input and Control	18
Input and Output (I/O) Ports	18
Software	18
Optional Items	19
Warranty	19
Environment	19
Notebook Tour	20
Touchpad Basics	28
Using the Keyboard	29
Windows Keys	30
Hotkeys	31
System Block Diagram	33
Specification Tables	34
Computer specifications	34
System Board Major Chips	35
Processor	35
Processor Specifications	36
CPU Fan True Value Table	36
System Memory	37
Memory Combinations	37
Video Interface	37
BIOS	38
LAN Controller	38
Keyboard	38
Hard Disk Drive (AVL components)	39
Hard Disk Drive (AVL components) (Continued)	40
Super-Multi Drive	41
Super-Multi Drive (Continued)	42
Super-Multi Drive (Continued)	43
LCD 14.0”	44
LCD 14.0” (Continued)	45
LCD Inverter (not available with this model)	45
Display Supported Resolution (LCD Supported Resolution)	46
Graphics Controller	46
Display Supported Resolution (GPU Supported Resolution)	46
Bluetooth Interface	47
Bluetooth Module	47
Wireless Module 802.11b/g/n	48
Camera	48
Mini Card Wireless Networking Card	48
3G Card (not available in this model)	48
Audio Codec and Amplifier	49
Audio Codec and Amplifier (Continued)	50
Audio Interface	50
Battery	51
VRAM (not available in this model)	51
USB Port	51
HDMI Port	51
AC Adapter	52
System Power Management	52
Card Reader	52
System LED Indicator	53
System DMA Specification	53
System Interrupt Specification	54
System Interrupt Specification (Continued)	55
System Interrupt Specification (Continued)	56
System Interrupt Specification (Continued)	57
System I/O Address Map	58
System I/O Address Map (Continued)	59
System Utilities	61
BIOS Setup Utility	63
Navigating the BIOS Utility	63
BIOS	64
Information	64
Main	66
Security	68
Boot	72
Exit	73
BIOS Flash Utilities	74
DOS Flash Utility	75
WinFlash Utility	77
Clearing BIOS Passwords	78
Removing BIOS Passwords	79
Removing Insyde HDD Password	81
Miscellaneous Tools	82
Using DMITools	82
Using UUIDTools	86
Using the LAN MAC EEPROM Utility	87
Crisis Disk Recovery	88
Machine Maintenance Procedures	89
Introduction	93
General Information	93
Recommended Equipment	93
Maintenance Flowchart	94
Getting Started	95
Battery Pack Removal	96
Battery Pack Installation	96
Dummy Card Removal	97
Dummy Card Installation	97
Keyboard Removal	98
Keyboard Installation	99
Base Assembly Removal	100
Base Assembly Installation	101
ODD (Optical Disk Drive) Module Removal	102
ODD Module Installation	103
USB Module Removal	104
USB Module Installation	104
HDD (Hard Disk Drive) Module Removal	105
HDD Module Installation	106
Mainboard Removal	107
Mainboard Installation	109
DIMM (Dual In-line Memory Module) Module Removal	110
DIMM Module Installation	111
WLAN (Wireless Local Area Network) Module Removal	112
WLAN Module Installation	113
Thermal Module Removal	114
Thermal Module Installation	114
RTC battery Removal	116
RTC battery Installation	116
CPU Processor Removal	117
CPU Processor Installation	118
Bluetooth Module Removal	119
Bluetooth Module Installation	120
Speaker Module Removal	121
Speaker Module Installation	121
Power Switch Board Removal	122
Power Switch Board Installation	122
LCD (Liquid Crystal Display) Module Removal	123
LCD Module Installation	124
DC-in Jack Removal	125
DC-in Jack Installation	126
LCD Bezel Removal	127
LCD Bezel Installation	128
Camera Module Removal	129
Camera Module Installation	130
LCD Panel Removal	131
LCD Panel Installation	132
LCD Bracket Removal	133
LCD Bracket Installation	133
LVDS Cable Removal	134
LVDS Cable Installation	135
Troubleshooting	137
Introduction	139
General Information	139
Power On Issues	140
No Display Issues	141
LCD Picture Failure	144
Internal Keyboard Failure	145
Touchpad Failure	146
Internal Speaker Failure	147
Internal Microphone Failure	149
USB Failure	150
Other Functions Failure	151
Intermittent Problems	152
Undetermined Problems	152
Post Codes	153
Jumper and Connector Locations	161
Mainboard Jumper and Connector Locations	163
Clearing Password Check and BIOS Recovery	165
Clearing Password Check	165
Clear CMOS Jumper	166
BIOS Recovery by Crisis Disk	167
FRU (Field Replaceable Unit) List	169
Exploded Diagrams	172
FRU List	175
Screw List	184
Model Definition and Configuration	185
Acer Aspire 4349	187
Acer Aspire 4749 & 4749Z	200
Test Compatible Components	209
Microsoft® Windows® 7 Environment Test	212
Online Support Information	221

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