Toshiba Satellite L20 Series Maintenance Manual page 8

Chapter-0
2.9 Display Troubleshooting..............................................................................................70
Procedure 1
Procedure 2
Procedure 3
Procedure 4
2.10 Optical Disk Drive Troubleshooting............................................................................73
Procedure 1
Procedure 2
2.11 Modem Troubleshooting..............................................................................................74
Procedure 1
Procedure 2
2.12 LAN Troubleshooting..................................................................................................76
Procedure 1
Procedure 2
2.13 Wireless LAN Troubleshooting...................................................................................77
Procedure 1
Procedure 2
Procedure 3
2.14 Sound Troubleshooting................................................................................................80
Procedure 1
Procedure 2
Procedure 3
Chapter 3 Test Program for Field
3.1 Tests and Diagnostics Software Overview ...................................................................82
3.2 Executing the Diagnostic Test .....................................Error! Bookmark not defined.
3.3 Subtest names...............................................................................................................87
3.4 System Test..................................................................................................................90
3.5 Memory Test................................................................................................................92
3.6 Keyboard Test..............................................................................................................95
3.7 Display Test .................................................................................................................98
3.8 Floppy Disk Test........................................................................................................113
8
External Monitor Check...........................................................70
Diagnostic Test Program Execution Check .............................70
Connector and Cable Check ....................................................71
Replacement Check .................................................................72
Diagnostic Test Program Execution Check .............................73
Connector Check and Replacement Check..............................73
Diagnostic Test Program Execution Check .............................74
Connector Check and Replacement Check..............................74
Diagnostic Test Program Execution Check .............................76
Connector Check and Replacement Check..............................76
Transmitting-Receiving Check ................................................77
Antennas' Connection Check ...................................................78
Replacement Check .................................................................79
Diagnostic Test Program Execution Check .............................80
Connector Check......................................................................80
Replacement Check .................................................................81
Satellite L20 Maintenance Manual (960-Q01)