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Acer Aspire S5-391 Acer S5-391 Notebook Service Guide - Page 81

Internal Keyboard Failure

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Internal Keyboard Failure If the internal keyboard fails, perform the following: Start OK Keyboard FPC NG well connected? OK Connect it well Keyboard OK? NG OK Replace M/B Replace keyboard Figure 4-4. Internal Keyboard Failure 4-7 Troubleshooting

Section	Page
Table of Contents	2
General Information	7
Hardware Specifications and Configurations	9
Features	9
Notebook Tour	13
Top View	13
Left View	15
Right View	16
Back View	17
Base View	18
Touchpad Basics	19
Keyboard Basics	20
System Block Diagram	23
Specifications Table	24
System Utilities	38
BIOS Setup Utility	38
Navigating the Bios Setup Utility	38
BIOS	39
Information	39
Main	41
Security	42
Boot	46
Exit	47
BIOS Flash Utilities	48
DOS Flash Utility	49
WinFlash Utility	51
Miscellaneous Tools	54
Using DMITools	54
HDD/BIOS Password	56
Unlocking the HDD	56
Clearing the Password Check and BIOS Password	58
Crisis Utility SOP	61
When to Use the Crisis SOP	61
Creating a USB Flash Crisis Disk	61
Using the Crisis Utility Disk	64
Jumper and Connector Locations	67
Mainboard Top View	67
Mainboard Bottom View	68
LED Board View	69
Audio Board View	70
Battery Board View	71
Card Reader Board View	72
Motor Board View	73
Clear CMOS Jumper	74
Troubleshooting	76
General Information	76
Power On Issues	77
No Display Issues	78
LCD Picture Failure	80
Internal Keyboard Failure	81
Touchpad Failure	82
Internal Speaker Failure	83
Microphone Record Failure	85
Extend MIC and Speaker Failure	86
Motor Failure	87
Servo Motor Troubleshooting	88
USB Failure	97
Wireless/BT Function Test Failure	98
2-in-1 Card Function Test Failure	99
Unit Thermal Failure	100
Cosmetic Failure	101
Other Functions Failure	102
BIOS Problems	102
Intermittent Problems	103
Undetermined Problems	103
Service and Maintenance	107
Introduction	107
Recommended Equipment	107
Maintenance Flowchart	108
Getting Started	110
SD Card Removal	111
SD Card Installation	112
Palm Rest Removal	113
Palm Rest Installation	115
Battery Module Removal	117
Battery Module Installation	118
Touchpad Module Removal	120
Touchpad Module Installation	121
Upper Case Removal	123
Upper Case Installation	128
Touchpad FFC Removal	132
Touchpad FFC Installation	133
Battery Board Removal	134
Battery Board Installation	137
LED Board Removal	140
LED Board Installation	141
Audio Board Removal	142
Audio Board Installation	146
Speaker Removal	151
Speaker Installation	153
Motor (Left) Removal	155
Motor (Left) Installation	158
Motor (Right) Removal	161
Motor (Right) Installation	163
Motor Board Removal	166
Motor Board Installation	168
DC-In Cable Removal	171
DC-In Cable Installation	173
Fan Removal	175
Fan Installation	177
Thermal Module Removal	179
Thermal Module Installation	181
SSD Module Removal	183
SSD Module Installation	185
Mainboard Removal	187
Mainboard Installation	191
Card Reader Board Removal	195
Card Reader Board Installation	197
LCD Module Removal	199
LCD Module Installation	205
LCD Bezel Removal	212
LCD Bezel Installation	216
LCD Panel Removal	218
LCD Panel Installation	221
CCD Module Removal	224
CCD Module Installation	225
EDP Cable Removal	226
EDP Cable Installation	228
WLAN Antenna (Auxiliary) Removal	230
WLAN Antenna (Auxiliary) Installation	231
WLAN Antenna (Main) Removal	232
WLAN Antenna (Main) Installation	234
FRU (Field Replaceable Unit) List	237
Exploded Diagram	238
Main Assembly	238
Lower Case Assembly	240
Upper Case Assembly	241
LCD Assembly	242
FRU List	244
Screw List	249
Test Compatible Components	251
Microsoft® Windows® 7 Environment Test	251
Aspire S5-391	251
Online Support Information	254

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