Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual page 47

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