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Acer Aspire S3-391 Acer Aspire S3-391 Notebook Service Guide - Page 138

Keyboard Failure,

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

Section	Page
Aspire S3 MS2346 Service Guide	1
CHAPTER 1 - Hardware Specifications	9
Hardware Specifications and Configurations	11
Features	11
Operating System	11
Platform	11
System Memory	11
Display	11
Graphics	11
Storage Subsystem	12
Audio Subsystem	12
Communication	12
Privacy Control	12
Power Adapter and Battery	13
Keyboard and Pointing Device	13
I/O Ports	13
Software and Tools	14
Warranty	15
Dimensions and Weight	15
Environment	15
Notebook Tour	16
Open Front View	16
Rear View	17
Left View	18
Right View	19
Base View	20
Touchpad Basics	21
Keyboard	22
D2D Recovery	26
System Block Diagram	26
Specification Tables	27
CHAPTER 2 - System Utilities	39
System Utilities	41
BIOS Setup Utility	41
Navigating the BIOS Utility	41
BIOS Menus	42
BIOS Flash Utilities	50
DOS Flash Utility	51
WinFlash Utility	51
Remove HDD/BIOS Password Utilities	52
Removing the HDD Password	52
Removing the BIOS Passwords	53
Using DMI Tools	54
LAN EEPROM Utility	54
CHAPTER 3 - Machine Maintenance	55
Machine Maintenance	59
Machine Disassembly and Replacement	59
Recommended Equipment	59
Replacement Requirements	59
Pre-disassembly Instructions	60
Disassembly Process	61
Removing the Lower Case	63
Removing the Battery Pack	64
Removing the Left and Right Speakers	67
Removing the WLAN Module	69
Removing the DC-In Module (WLAN Board)	71
Removing the DC-In Module (M-SATA Board)	72
Removing the HDD Module	73
Removing the SSD Module	76
Removing the Card Reader Board	79
Removing the Mainboard	81
Removing the Thermal Module	85
Removing the RTC Battery	87
Removing the WLAN Board	88
Removing the M-SATA Board	89
Removing the Keyboard	90
Removing the Power Button Board	92
Removing the Middle Cover Assembly	93
Removing the LCD Module	95
Reassembly Process	97
Replacing the LCD Module	97
Replacing the Middle Cover Assembly	99
Replacing the Power Button Board	101
Replacing the Keyboard	102
Replacing the WLAN Board	104
Replacing the M-SATA Board.	105
Replacing the RTC Battery	106
Replacing the Thermal Module	107
Replacing the Mainboard	109
Replacing the Card Reader Board	113
Replacing the HDD Module	115
Replacing the SSD Module	118
Replacing the DC-In Module (WLAN Board)	121
Replacing the DC-In Module (M-SATA Board)	122
Replacing the WLAN Module	123
Replacing the Right Speakers	125
Replacing the Battery Pack	127
Replacing the Lower Case	130
CHAPTER 4 - Troubleshooting	131
Troubleshooting	133
Introduction	133
General Information	133
Power On Issues	134
No Display Issues	135
LCD Failure	137
Keyboard Failure	138
Touchpad Failure	139
Internal Speaker Failure	140
Microphone Failure	142
USB Failure	143
WLAN Failure	144
Card Reader Failure	145
Thermal Unit Failure	146
Other Functions Failure	147
Intermittent Problems	148
Undetermined Problems	148
Error Codes	149
BIOS Beep Codes	150
POST Codes	155
Component Codes	155
Progress Codes	159
CHAPTER 5 - Jumper and Connector Locations	161
Jumper and Connector Locations	163
Mainboard Layout	163
Clearing Password Check and BIOS Recovery	165
Clearing the BIOS Passwords	165
Performing a BIOS Recovery	166
CHAPTER 6 - FRU List	169
FRU (Field Replaceable Unit) List	171
Aspire S3 MS2346 Exploded Diagrams	172
Main Assembly	172
FRU List	174
CHAPTER 7 - Test Compatible Components	183
Test Compatible Components	185
Microsoft Windows 7 Environment Test	185
CHAPTER 8 - Online Support Information	191

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