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Toshiba Satellite A300 Maintenance Manual - Page 162

screws, cover assembly, Remove the following, securing the cover assembly from the front

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Replacement Procedures 4. Remove the following screws securing the cover assembly from the front of computer. Pull up and remove the cover assembly from the base assembly. M2.0×5.0 FLAT BIND screw Front x4 Figure 4-21 Removing the screws (front) and cover assy Satellite A300 Maintenance Manual(960-Q08) 4-31

Section	Page
Maintenance Manual	1
SAFETY PRECAUTIONS	3
Conventions	5
Acronyms	5
Keys	5
Key operation	5
User input	5
The display	5
Chapter 1 Hardware Overview	6
Chapter 2 Troubleshooting Procedures	6
Chapter 3 Test Program for Field	9
Chapter 4 Replacement Procedures	10
Appendices	12
Chapter1	14
Hardware Overview	14
1.1 Features	18
1.2 System Block Diagram	23
1.3 2.5-inch Hard Disk Drive	27
1.4 Optical Drive	31
1.4 DVD Super Multi Drive	32
1.5 Keyboard	35
1.6 Color Display	36
1.6.1 LCD Module with Single lamp	36
1.6.2 LCD Module with Dual lamp	39
1.6.3 FL Inverter Board	39
1.7 Power Rails	41
1.8 Batteries	42
1.8.1 Main Battery	42
1.8.2 Battery Charging Control	43
1.8.3 RTC Battery	44
1.9 AC Adapter	45
AMD	46
1.1 Features	46
1.2 System Block Diagram	50
1.3 2.5-inch Hard Disk Drive	53
1.4 Optical Drive	58
1.4.1 DVD Super Multi Drive	59
1.5 Key board	62
1.6 Color Display	63
1.6.1 LCD Module with Single lamp	63
1.6.2 LCD Module with Dual lamp	66
1.6.3 FL Inverter Board	66
1.7 Power Rails	68
1.8 Batteries	69
1.8.1 Main Battery	69
1.8.2 Battery Charging Control	70
1.8.3 RTC Battery	71
1.9 AC Adapter	72
Chapter2	73
Troubleshooting	77
2.1 Troubleshooting	77
2.2 Troubleshooting Flowchart	79
2.3 Power Supply Troubleshooting	83
2.4 System Board Troubleshooting	89
2.5 USB FDD Troubleshooting	98
2.6 2.5” HDD Troubleshooting	102
2.7 Keyboard Troubleshooting	107
2.8 Touch pad Troubleshooting	109
2.9 Display Troubleshooting	111
2.10 Optical Disk Drive Troubleshooting	114
2.11 Modem Troubleshooting	115
2.12 LAN Troubleshooting	117
2.13 Wireless LAN Troubleshooting	118
2.14 Sound Troubleshooting	121
2.15 Fingerprint Troubleshooting	123
2.16 Bluetooth Troubleshooting	124
Chapter4 - Replacement	125
Chapter 4 Contents	127
4.1 Overview	130
Safety Precautions	131
Before You Begin	132
Disassembly Procedure	133
Assembly Procedure	134
Tools and Equipment	134
Screw Tightening Torque	135
Grip Color	135
Screw Notation	136
4.2 Battery pack	137
Removing the battery pack	137
Installing the battery pack	138
4.3 Dummy card	140
Removing a Dummy New card	140
Installing a Dummy card	141
4.4 HDD	142
Removing a HDD	142
Installing a HDD	145
4.5 Wireless LAN card	146
Removing a Wireless LAN card	146
Installing a Wireless LAN card	147
4.6 Memory module	148
Removing a memory module	148
Installing a memory module	149
4.7 Keyboard	150
Removing the keyboard	150
Installing the keyboard	152
4.8 Optical disk drive	153
Removing an optical disk drive	153
Installing an optical disk drive	154
4.9 Display assembly	155
Removing the display assembly	155
Installing the display assembly	159
4.10 Cover assembly	160
Installing the cover assembly	163
4.11 Touch pad	164
Removing the touch pad	164
Installing the touch pad	165
4.12 Removing the USB board	166
Installing the USB board	166
Appendix	186
Appendix	186
Appendix Contents	188
Appendix A	192
Appendix A Handling the LCD Module	192
Precautions for handling the LCD module	192
Appendix B	198
Appendix B Board Layout	198
B.1 System Board	198
B.2 Touch Pad Board	202
B.3 Finger Print Board	204
Appendix C Pin Assignment	206
Appendix D	236
Appendix D Display Codes	236
D.1 Display Codes	236
Appendix E Keyboard Layout	244
Appendix F	260
Appendix F Wiring Diagrams	260
F.1 RGB Monitor ID Wraparound connector	260
F.2 LAN Loopback Connector	260
Appendix G	261
Appendix G BIOS Rewrite Procedures	261
Appendix H	262
Appendix H EC/KBC Rewrite Procedures	262
Appendix I Reliability	263