Toshiba NB300 - Page 4

iv [CONFIDENTIAL] NB300 SERIES MAINTENANCE MANUAL
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the NB300 SERIES MAINTENANCE
MANUAL 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, acronym
s are enclosed in
parentheses following their definition. For example:
Read Only Memory (ROM)
Keys
Keys are used in the text to describe m
any operations. The key top symbol as it appears on the
keyboard is printed in boldface type.
Key operation