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Conventions, Acronyms, Keys

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The manual is divided into the following parts: Chapter 1 Hardware Overview describes the Satellite Series system unit and each FRU. Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve FRU problems. Chapter 3 Test and Diagnostics describes how to perform test and diagnostic operations for maintenance service. Chapter 4 Replacement Procedures describes the removal and replacement of the FRUs. Appendices The appendices describe the following: Handling the LCD module Board layout Pin assignments Keyboard scan/character codes Key layout Screw torque list Reliability Conventions This manual uses the following formats to describe, identify, and highlight terms and operating procedures. Acronyms On the first appearance and whenever necessary for clarification, acronyms are enclosed in parentheses following their definition. For example: Read Only Memory (ROM) Keys Keys are used in the text to describe many operations. The key top symbol as it appears on the keyboard is printed in boldface type. iv Manual [CONFIDENTIAL] Satellite L450 / ProL450 Series Maintenance

Section	Page
Maintenance Manual	1
SAFETY PRECAUTIONS	3
Conventions	4
Acronyms	4
Keys	4
Key operation	5
User input	5
The display	5
Chapter 1 Hardware Overview	6
Chapter 2 Troubleshooting Procedures	6
Chapter 3 Tests and Diagnostics	7
Chapter 4 Replacement Procedures	8
Appendices	13
Chapter 1	14
1.1 Features	18
1.2 2.5-inch HDD	28
1.3 DVD Super Multi (+-R Double Layer)	29
1.4 Power Supply	30
1.5 Batteries	32
1.5.1 Main Battery	32
1.5.2 Battery Charging Control	32
1.5.3 RTC Battery	33
Chapter 2	34
Chapter 2 Contents	36
2.1 Troubleshooting Introduction	38
2.2 Troubleshooting Flowchart	39
2.3 Power Supply Troubleshooting	44
2.4 Display Troubleshooting	49
2.5 Keyboard Troubleshooting	52
2.6 External USB Devices Troubleshooting	54
2.7 Touch Pad Troubleshooting	56
2.8 Speaker Troubleshooting	58
2.9 Optical drive troubleshooting	60
2.10 Modem Troubleshooting	63
2.11 Wireless LAN Troubleshooting	65
2.12 Camera Troubleshooting	67
2.14 HDD Troubleshooting	71
2.15 CRT Troubleshooting	73
2.16 HDMI Troubleshooting	75
2.18 LED troubleshooting	79
2.19 Thermal Module troubleshooting	80
2.20 LAN troubleshooting	82
Chapter 3	84
Chapter 4	122
4.1 General	128
4.2 Battery	135
4.3 HDD	137
4.4 Memory	140
4.5 WLAN Card	142
4.6 Modem Card (BTO)	143
4.7 ODD	144
4.8 Keyboard Cover and Keyboard	147
4.9 Logic Upper Assembly	150
4.10 Power Board	152
4.11 Speakers	153
4.12 Touch Pad Bracket	154
4.13 Thermal Fan	155
4.14 Motherboard	156
4.15 CPU and Thermal Module	160
4.16 Display Assembly	164
4.17 LCD Bezel Assembly	166
4.18 LCD Module and Inverter Board	170
4.19 Camera (BTO)	174
4.20 Hinge Saddle	175
4.21 USB Board	176
4.22 RJ11 Jack	177
Appendix	178
Appendix A Handling the LCD Module	178
Precautions for handling the LCD module	178
Appendix B Board Layout	183
B.1 System Board Top View	183
B.2 System Board Bottom VieW	183
Appendix C Pin Assignments	186
C.1 JFAN	186
C.2 JLVDS	186
C.3 JCRT	187
C.4 JHDMI	187
C.5 JHDD0	188
C.6 JODD	188
C.7 JCAM	189
C.8 JWLAN	189
C.9 JLAN	190
C.10 JDDRL, JPDDRH	190
C.11 JMIC	193
C.12 JLINE OUT	194
C.13 JEXMIC IN	194
C.14 JKB	194
C.15 JUSB	195
C.16 JUSBB	195
C.17 JCS	196
C.18 JPOWER	196
C.19 JREAD	196
C.20 JSPKL	197
C.21 JSPKR	197
C.22 JTOUCH	197
Appendix D Keyboard Scan/Character Codes	198
Appendix E Key Layout	206