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