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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) 2-iii