Toshiba satellite a20 series Benutzerhandbuch

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2  Troubleshooting Procedures 
Chapter 2 
Contents 
2.1 Troubleshooting ......................................................................................................... 2-1 
2.2 Troubleshooting 
Flowchart........................................................................................ 2-3 
2.3 
Power Supply Troubleshooting ................................................................................. 2-7 
Procedure 1  Power Status Check ..................................................................... 2-7 
Procedure 2  Error Code Check ........................................................................ 2-9 
Procedure 3  Connection Check...................................................................... 2-16 
Procedure 4  Quick Charge Check.................................................................. 2-17 
Procedure 5  Replacement Check ................................................................... 2-18 
2.4 
System Board Troubleshooting ............................................................................... 2-19 
Procedure 1  Message Check .......................................................................... 2-20 
Procedure 2  Printer Port LED Check on Boot Mode..................................... 2-22 
Procedure 3  Diagnostic Test Program Execution Check ............................... 2-31 
Procedure 4  Replacement Check ................................................................... 2-32 
2.5 FDD 
Troubleshooting .............................................................................................. 2-33 
Procedure 1  FDD Head Cleaning Check ....................................................... 2-33 
Procedure 2  Diagnostic Test Program Execution Check ............................... 2-34 
Procedure 3  Connector Check and Replacement Check................................ 2-35 
2.6 HDD 
Troubleshooting ............................................................................................. 2-36 
Procedure 1  Message Check .......................................................................... 2-36 
Procedure 2  Partition Check .......................................................................... 2-37 
Procedure 3  Format Check............................................................................. 2-38 
Procedure 4  Diagnostic Test Program Execution Check ............................... 2-39 
Procedure 5  Connector Check and Replacement Check................................ 2-40 
2.7 Keyboard 
Troubleshooting ...................................................................................... 2-41 
Procedure 1  Diagnostic Test Program Execution Check ............................... 2-41 
Procedure 2  Connector and Replacement Check........................................... 2-42 
Satellite A20 Maintenance Manual (960-444) 
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