2 Troubleshooting
TECRA M4 Maintenance Manual (960-521) [CONFIDENTIAL] 2-iii
Chapter 2 Contents
2.1 Troubleshooting......................................................................................................... 2-1
2.2 Troubleshooting Flowchart........................................................................................ 2-2
2.3 Power Supply Troubleshooting.................................................................................. 2-6
Procedure 1 Power Supply Icon Check...................................................... 2-7
Procedure 2 Error Code Check .................................................................. 2-9
Procedure 3 Connection Check................................................................ 2-15
Procedure 4 Quick Charge 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 (D port) Check on Boot Mode.......................... 2-20
Procedure 3 Diagnostic Test Program Execution Check ......................... 2-32
Procedure 4 Replacement Check ............................................................. 2-32
2.5 USB 3.5” 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 2.5” HDD Troubleshooting...................................................................................... 2-36
Procedure 1 Partition Check..................................................................... 2-36
Procedure 2 Message 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 Check and Replacement Check.......................... 2-41
