Satellite A20 Maintenance Manual (960-444) vii
Table of Contents
Chapter 1 Hardware Overview
1.1 Features...................................................................................................................... 1-1
1.2 System Unit Block Diagram...................................................................................... 1-7
1.3 2.5-inch Hard Disk Drive.........................................................................................1-14
1.4 CD-RW/DVD Drive ................................................................................................1-16
1.5 DVD-R/-RW Drive.................................................................................................. 1-19
1.6 DVD Multi Drive.....................................................................................................1-20
1.7 Keyboard..................................................................................................................1-23
1.8 TFT Color Display...................................................................................................1-24
1.9 Power Supply........................................................................................................... 1-26
1.10 Batteries................................................................................................................... 1-28
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting......................................................................................................... 2-1
2.2 Troubleshooting Flowchart........................................................................................ 2-3
2.3 Power Supply Troubleshooting..................................................................................2-7
2.4 System Board Troubleshooting................................................................................2-19
2.5 FDD Troubleshooting.............................................................................................. 2-33
2.6 HDD Troubleshooting .............................................................................................2-36
2.7 Keyboard Troubleshooting...................................................................................... 2-41
2.8 Display Troubleshooting..........................................................................................2-44
2.9 CD-RW/DVD, DVD-ROM, DVD-R/-RW
and DVD Multi Drive Troubleshooting...................................................................2-46
2.10 Modem Troubleshooting..........................................................................................2-48
2.11 LAN Troubleshooting.............................................................................................. 2-50
2.12 Wireless LAN Troubleshooting...............................................................................2-52
2.13 Sound Troubleshooting............................................................................................ 2-56
2.14 SD Card Troubleshooting........................................................................................ 2-59