2-2 Satellite U400/Satellite Pro U400/PORTEGE M800 Maintenance Manual
Chapter 2 Contents
2.1 Troubleshooting.............................................................................................................1
2.2 Troubleshooting Flowchart............................................................................................3
2.3 Power Supply Troubleshooting......................................................................................7
Procedure 1 Power Status Check ...................................................................7
Procedure 2 Error Code Check ......................................................................8
Procedure 3 Connection Check....................................................................10
Procedure 4 Charging Check .......................................................................11
Procedure 5 Replacement Check .................................................................12
2.4 System Board Troubleshooting....................................................................................13
Procedure 1 Message Check ........................................................................14
Procedure 2 Debugging Port Check.............................................................16
Procedure 3 Diagnostic Test Program Execution Check.............................21
Procedure 4 Replacement Check .................................................................21
2.5 USB FDD Troubleshooting .........................................................................................22
Procedure 1 FDD Head Cleaning Check .....................................................22
Procedure 2 Diagnostic Test Program Execution Check.............................23
Procedure 3 Connector Check and Replacement Check..............................24
2.6 2.5” HDD Troubleshooting..........................................................................................26
Procedure 1 Partition Check.........................................................................26
Procedure 2 Message Check ........................................................................27
Procedure 3 Format Check...........................................................................28
Procedure 4 Diagnostic Test Program Execution Check.............................29
Procedure 5 Connector Check and Replacement Check..............................30
2.7 Keyboard Troubleshooting ..........................................................................................31
Procedure 1 Diagnostic Test Program Execution Check.............................31
Procedure 2 Connector Check and Replacement Check..............................32
2.8 Touch pad Troubleshooting.........................................................................................33
Procedure 1 Diagnostic Test Program Execution Check.............................33
Procedure 2 Connector Check and Replacement Check..............................34
