Toshiba QOSMIO G20 Maintenance Manual page 41

Chapter 2
2.1 Troubleshooting ......................................................................................................... 2-1
2.2 Troubleshooting Flowchart........................................................................................ 2-3
2.3 Power Supply Troubleshooting.................................................................................. 2-7
Procedure 1
Procedure 2
Procedure 3
Procedure 4
Procedure 5
2.4 System Board Troubleshooting................................................................................ 2-17
Procedure 1
Procedure 2
Procedure 3
Procedure 4
2.5 USB FDD Troubleshooting ..................................................................................... 2-37
Procedure 1
Procedure 2
Procedure 3
2.6 2.5" HDD Troubleshooting...................................................................................... 2-41
Procedure 1
Procedure 2
Procedure 3
Procedure 4
Procedure 5
2.7 Keyboard Troubleshooting ...................................................................................... 2-46
Procedure 1
Procedure 2
2.8 Touch pad Troubleshooting ..................................................................................... 2-48
Procedure 1
Procedure 2
QOSMIO G20 Maintenance Manual (960-511)
Contents
Power Status Check ............................................................... 2-7
Error Code Check .................................................................. 2-9
Connection Check................................................................ 2-15
Charging Check ................................................................... 2-15
Replacement Check ............................................................. 2-16
Message Check .................................................................... 2-18
Debugging Port Check......................................................... 2-20
Diagnostic Test Program Execution Check ......................... 2-36
Replacement Check ............................................................. 2-36
FDD Head Cleaning Check ................................................. 2-37
Diagnostic Test Program Execution Check ......................... 2-38
Connector Check and Replacement Check.......................... 2-39
Partition Check..................................................................... 2-41
Message Check .................................................................... 2-42
Format Check....................................................................... 2-43
Diagnostic Test Program Execution Check ......................... 2-44
Connector Check and Replacement Check.......................... 2-45
Diagnostic Test Program Execution Check ......................... 2-46
Connector Check and Replacement Check.......................... 2-47
Diagnostic Test Program Execution Check ......................... 2-48
Connector Check and Replacement Check.......................... 2-49
[CONFIDENTIAL] 2-iii