Toshiba R100 manual Procedure 2 Debug Port Check on Boot Mode, A set of tool for debug port test

2.4 System board Troubleshooting 2 Troubleshooting

Procedure 2 Debug Port Check on Boot Mode

Check the D port status by a debug port test. The tool for debug port test is shown below.

Figure 2-3 A set of tool for debug port test

The test procedures are follows;

1.Connect the debug test cable to the connector PJ325 of the System board. For disassembling to connect the test cable, refer to Chapter 4.

2.Connect the debug port test cable and RS-232C cross-cable to the test board.

3.Connect the RS-232C cross-cable to the PC that displays the results.

RS232C cross-cable Debug port test cable

PC that displays the test results

Test board

PJ325 System board

4. Boot the computer in MS-DOS mode.

PORTEGE R100 Maintenance Manual (960-440) 2-19