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Copyright © 2009 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual cannot be reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with respect to the use of the information contained herein. Toshiba Personal Computer Satellite Maintenance Manual First edition May. 2009 Disclaimer The information presented in this manual has been reviewed and validated for accuracy. The included set of instructions and descriptions are accurate for the Satellite Series at the time of this manual's production. However, succeeding computers and manuals are subject to change without notice. Therefore, Toshiba assumes no liability for damages incurred directly or indirectly from errors, omissions, or discrepancies between any succeeding product and this manual. Trademarks IBM is a registered trademark, and OS/2 and PS/2 are trademarks of IBM Corporation. Microsoft, MS-DOS, Windows, DirectSound and DirectMusic are registered trademarks of Microsoft Corporation. Intel and Pentium are registered trademarks, and SpeedStep is a trademark of Intel Corporation. Sound Blaster is a registered trademark of Creative Technology Ltd. Centronics is a registered trademark of Centronics Data Computer Corporation. Photo CD is a trademark of Eastman Kodak. All other properties are trademarks or registered trademarks of their respective holders. ii 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

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[CONFIDENTIAL]

Satellite L450 / ProL450 Series Maintenance

Manual

Under the copyright laws, this manual

cannot be reproduced in any form without the prior written permission of Toshiba.

No patent

liability is assumed with respect to the use of the information contained herein.

Toshiba Personal Computer Satellite Maintenance Manual

First edition May. 2009

Disclaimer

The information presented in this manual has been reviewed and validated for accuracy.

The

included set of instructions and descriptions are accurate for the Satellite Series at the time of this

manual's production.

However, succeeding computers and manuals are subject to change without

notice.

Therefore, Toshiba assumes no liability for damages incurred directly or indirectly from

errors, omissions, or discrepancies between any succeeding product and this manual.

Trademarks

IBM is a registered trademark, and OS/2 and PS/2 are trademarks of IBM Corporation.

Microsoft, MS-DOS, Windows, DirectSound and DirectMusic are registered trademarks of

Microsoft Corporation.

Intel and Pentium are registered trademarks, and SpeedStep is a trademark of Intel Corporation.

Sound Blaster is a registered trademark of Creative Technology Ltd.

Centronics is a registered trademark of Centronics Data Computer Corporation.

Photo CD is a trademark of Eastman Kodak.

All other properties are trademarks or registered trademarks of their respective holders.