User Guide

2 Troubleshooting Procedures
Chapter 2 Contents
2.1 Troubleshooting ......................................................................................................... 2-1
2.2 Troubleshooting Flowchart........................................................................................ 2-2
2.3 Power Supply Troubleshooting.................................................................................. 2-6
Procedure 1 Power Status Check ............................................................... 2-6
Procedure 2 Error Code Check .................................................................. 2-8
Procedure 3 Connection Check................................................................ 2-15
Procedure 4 Charging Check ................................................................... 2-15
Procedure 5 Replacement Check ............................................................. 2-16
2.4 System Board Troubleshooting................................................................................ 2-17
Procedure 1 Message Check .................................................................... 2-18
Procedure 2 Debug Port Check ................................................................ 2-20
Procedure 3 Diagnostic Test Program Execution Check ......................... 2-30
Procedure 4 Replacement Check ............................................................. 2-30
2.5 3.5” FDD Troubleshooting ...................................................................................... 2-31
Procedure 1 FDD Head Cleaning Check ................................................. 2-31
Procedure 2 Diagnostic Test Program Execution Check ......................... 2-32
Procedure 3 Connector Check and Replacement Check.......................... 2-33
2.6 2.5” HDD Troubleshooting...................................................................................... 2-34
Procedure 1 Partition Check..................................................................... 2-34
Procedure 2 Message Check .................................................................... 2-35
Procedure 3 Format Check....................................................................... 2-36
Procedure 4 Diagnostic Test Program Execution Check ......................... 2-37
Procedure 5 Connector Check and Replacement Check.......................... 2-38
2.7 Keyboard Troubleshooting ...................................................................................... 2-39
Procedure 1 Diagnostic Test Program Execution Check ......................... 2-39
Procedure 2 Connector Check and Replacement Check.......................... 2-39
Satellite A50/TECRA A2 Maintenance Manual (960-478) 2-iii