Toshiba libretto 100ct Service Manual
File No. 960-140
vi
Table of Contents
Chapter 1
Hardware Overview
1.1
Features..................................................................................................................1-1
1.2
System Unit Block Diagram....................................................................................1-5
1.3
3.5-inch External FDD............................................................................................1-9
1.4
2.5-inch Hard Disk Drive......................................................................................1-10
1.5
Keyboard..............................................................................................................1-11
1.6
TFT Color LCD....................................................................................................1-12
1.7
Power Supply .......................................................................................................1-14
1.8
Batteries ...............................................................................................................1-16
Chapter 2
Troubleshooting Procedures
2.1
Troubleshooting......................................................................................................2-1
2.2
Troubleshooting Flowchart.....................................................................................2-2
2.3
Power Supply Troubleshooting...............................................................................2-6
2.4
System Board Troubleshooting.............................................................................2-14
2.5
FDD Troubleshooting...........................................................................................2-25
2.6
HDD Troubleshooting ..........................................................................................2-28
2.7
Keyboard Troubleshooting....................................................................................2-34
2.8
Pointing Device Troubleshooting..........................................................................2-36
2.9
Display Troubleshooting.......................................................................................2-37
Chapter 3
Tests and Diagnostics
3.1
The Diagnostic Test................................................................................................3-1
3.2
Executing the Diagnostic Test.................................................................................3-3
3.3
Subtest Names........................................................................................................3-7
3.4
System Test............................................................................................................3-9
3.5
Memory Test ........................................................................................................3-10
3.6
Keyboard Test ......................................................................................................3-12