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vi [CONFIDENTIAL] QOSMIO G50 Maintenance Manual (960-683)
Table of Contents
Chapter 1 Hardware Overview
1.1 Features...................................................................................................................... 1-1
1.2 System Block Diagram .............................................................................................. 1-7
1.3 2.5-inch Hard Disk Drive......................................................................................... 1-11
1.4 Optical Drive............................................................................................................ 1-13
1.5 Keyboard.................................................................................................................. 1-17
1.6 TFT Color Display...................................................................................................1-18
1.7 Power Supply........................................................................................................... 1-20
1.8 Batteries ................................................................................................................... 1-22
1.9 AC Adapter .............................................................................................................. 1-25
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting ......................................................................................................... 2-1
2.2 Troubleshooting Flowchart........................................................................................2-3
2.3 Power Supply Troubleshooting.................................................................................. 2-8
2.4 System Board Troubleshooting................................................................................ 2-18
2.5 USB FDD Troubleshooting ..................................................................................... 2-39
2.6 2.5” HDD Troubleshooting...................................................................................... 2-43
2.7 Keyboard Troubleshooting ...................................................................................... 2-48
2.8 Touch pad Troubleshooting ..................................................................................... 2-50
2.9 Display Troubleshooting.......................................................................................... 2-52
2.10 Optical Disk Drive Troubleshooting........................................................................ 2-55
2.11 Modem Troubleshooting.......................................................................................... 2-56
2.12 LAN Troubleshooting..............................................................................................2-58
2.13 Wireless LAN Troubleshooting............................................................................... 2-59
2.14 Bluetooth Troubleshooting ...................................................................................... 2-62
2.15 Sound Troubleshooting............................................................................................2-65