Toshiba PORTEGE R400 Maintenance Manual page 37

Chapter 2
2.1 Troubleshooting..........................................................................................................2-1
2.2 Troubleshooting Flowchart ........................................................................................2-3
2.3 Power Supply Troubleshooting ..................................................................................2-7
2.4 System Board Troubleshooting ................................................................................2-17
2.5 USB FDD Troubleshooting ......................................................................................2-33
2.6 1.8-inch HDD Troubleshooting................................................................................2-36
2.7 Keyboard and Touch pad Troubleshooting ..............................................................2-41
2.8 Display Troubleshooting ..........................................................................................2-43
2.9 LAN Troubleshooting ..............................................................................................2-45
2.10 Bluetooth Troubleshooting.......................................................................................2-46
2.11 Wireless LAN Troubleshooting ...............................................................................2-48
2.12 3G Troubleshooting..................................................................................................2-50
2.13 Tablet Pen Troubleshooting .....................................................................................2-53
2.14 Sound Troubleshooting ............................................................................................2-55
2.15 Fingerprint sensor Troubleshooting .........................................................................2-58
PORTEGE R400 Maintenance Manual (960-623)
Contents
2 Troubleshooting Procedures
[CONFIDENTIAL] 2-iii