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Acer Aspire 4743Z Aspire 4743 and 4743Z Notebook Series Service Guide - Page 106

USB Board, Machine Maintenance, Lift the USB board from the lower cover.

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4. Lift the USB board from the lower cover. Figure 3-50. USB Board 3-36 Machine Maintenance

Section	Page
Aspire 4743/4743G/4743Z/4743ZG Service Guide	1
Table of Contents	5
CHAPTER 1: Hardware Specifications	11
Table of Contents	12
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
Optical Media Drive	16
Communication	17
Privacy Control	17
Dimensions and Weight	17
Power Adapter and Battery	17
Special Keys and Controls	18
Software	19
Warranty	20
Environment	20
Notebook Tour	21
Top View	21
Closed Rear View	23
Left View	23
Right View	24
Base View	25
Indicators	26
Touchpad Basics	26
Using the Keyboard	27
Lock Keys	28
Windows Keys	29
Hotkeys	30
Special Keys	31
Specification Tables	33
CHAPTER 2: System Utilities	51
Table of Contents	52
System Utilities	53
BIOS Setup Utility	53
Navigating the BIOS Utility	53
BIOS	54
Information	54
Main	56
Security	58
Boot	62
Exit	63
BIOS Flash Utilities	64
DOS Flash Utility	65
WinFlash Utility	65
Remove HDD/BIOS Password Utilities	66
Removing HDD Password	66
Removing BIOS Passwords	67
Cleaning BIOS Passwords	68
Using DMI Tools	69
LAN EEPROM Utility	69
CHAPTER 3: Machine Maintenance	71
Table of Contents	72
Machine Maintenance	75
Machine Disassembly and Replacement	75
Recommended Equipment	75
Replacement Requirements	75
Pre-disassembly Instructions	76
Disassembly Process	77
External Module Disassembly Process	78
External Modules Disassembly Flowchart	78
Removing the Battery Pack	79
Remove the Dummy Card	80
Removing the Base Door	81
Removing the HDD Module	83
Removing the WLAN Module	86
Removing the DIMM Module	88
Removing the ODD Module	89
Main Unit Disassembly Process	92
Main Unit Disassembly Flowchart	92
Removing the Keyboard	93
Removing the Palmrest Module/Upper Cover	96
Removing the Speakers	98
Removing the Power Button Board	101
Removing the Touchpad Board	103
Removing the USB Board	105
Removing the Bluetooth Module	107
Removing the RTC Battery	108
Removing the Mainboard	109
Removing the Thermal Module	112
Removing the CPU	114
Removing the LCD Module	115
LCD Module Disassembly Process	118
LCD Module Disassembly Flowchart	118
Removing the LCD Bezel	119
Removing the LCD Panel	121
Removing the LCD Brackets	124
Removing the Microphone	125
Removing the Camera Board	126
Removing the Antennas	127
LCD Reassembly Process	128
Replacing the Antennas	128
Replacing the Camera Board	129
Replacing the Microphone	130
Replacing the LCD Brackets	131
Replacing the LCD Panel	132
Replacing the LCD Bezel	135
Main Unit Reassembly Process	137
Replacing the LCD Module	137
Replacing the CPU	140
Replacing the Thermal Module	142
Replacing the RTC Battery	144
Replacing the Mainboard	145
Replacing the Bluetooth Module	147
Replacing the USB Board	148
Replacing the Touchpad Board	150
Replacing the Power Button Board	152
Replacing the Speakers	154
Replacing the Palmrest Module/Upper Cover	157
Replacing the Keyboard	160
External Module Reassembly Process	162
Replacing the ODD Module	162
Replacing the DIMM Module	165
Replacing the WLAN Module	166
Replacing the HDD Module	168
Replacing the Base Door	171
Remove the Dummy Card	172
Replacing the Battery Pack	173
CHAPTER 4: Troubleshooting	175
Table of Contents	176
Troubleshooting	177
Introduction	177
General Information	177
Power On Issues	178
No Display Issues	179
LCD Failure	181
Keyboard Failure	182
Touchpad Failure	183
Internal Speaker Failure	184
Microphone Failure	186
USB Failure	187
WLAN Failure	188
Bluetooth Failure	189
Card Reader Failure	190
Thermal Unit Failure	191
Other Functions Failure	192
Intermittent Problems	193
Undetermined Problems	193
Error Codes	194
BIOS Beep Codes	195
POST Codes	200
CHAPTER 5: Jumper and Connector Locations	207
Table of Contents	208
Jumper and Connector Locations	209
Clearing Password Check and BIOS Recovery	211
Clearing Password Check	211
Performing a BIOS recovery	212
CHAPTER 6: FRU List	215
Table of Contents	216
FRU (Field Replaceable Unit) List	217
Main Assembly	218
LCD Assembly	219
FRU List	220
CHAPTER 7: Model Definition and Configuration	235
Table of Contents	236
Model Definition and Configuration	237
Aspire 4743/4743G/4743Z/4743ZG	237
CHAPTER 8: Test Compatible Components	339
Table of Contents	340
Test Compatible Components	341
Microsoft Windows 7 Environment Test	342
CHAPTER 9: Online Support Information	351
Table of Contents	352
Online Support Information	353
Introduction	353

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