iv [CONFIDENTIAL] Satellite U500/PORTEGE M900D/Dynabook Maintenance Manual
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the Satellite U500/PORTEGE
M900D/Dynabook 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
BIOS rewrite procedures
EC/KBC rewrite procedures
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