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vi PORTEGE M300 Maintenance Manual (960-504)
Table of Contents
Chapter 1 Hardware Overview
1.1 Features...................................................................................................................... 1-1
1.2 System Unit Block Diagram ...................................................................................... 1-7
1.3 USB Floppy Disk Drive........................................................................................... 1-11
1.4 Hard Disk Drive....................................................................................................... 1-12
1.5 Optical Drive............................................................................................................ 1-16
1.6 Keyboard.................................................................................................................. 1-21
1.7 TFT Color Display................................................................................................... 1-22
1.8 Power Supply........................................................................................................... 1-24
1.9 Batteries ................................................................................................................... 1-27
1.10 AC Adapter .............................................................................................................. 1-30
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 ............................................................................... 2-18
2.5 USB FDD Troubleshooting ..................................................................................... 2-31
2.6 HDD Troubleshooting ............................................................................................. 2-34
2.7 Keyboard Troubleshooting ...................................................................................... 2-39
2.8 Touch pad Troubleshooting ..................................................................................... 2-41
2.9 Display Troubleshooting.......................................................................................... 2-42
2.10 Optical drive Troubleshooting................................................................................. 2-45
2.11 Modem Troubleshooting.......................................................................................... 2-46
2.12 LAN Troubleshooting.............................................................................................. 2-48
2.13 Wireless LAN Troubleshooting............................................................................... 2-49
2.14 Bluetooth Troubleshooting ...................................................................................... 2-52
2.15 Sound Troubleshooting............................................................................................ 2-55