Toshiba 960-809 manual Procedure 2 Debugging Port Check, A set of tool for debug port test

Troubleshooting Procedures

2.4.2 Procedure 2 Debugging Port Check

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

Figure 2-1 A set of tool for debug port test

1.Not a Serial Port model should connect a debug port test cable to connector CN3110 of a system board.( W3270 open)

2.Connect the RS-232C Cross-cable to the PC that displays the test results.

4.Boot the computer in MS-DOS mode.

5.Execute GETDPORT.COM in the text menu in CPU REAL mode. (Insert the FD for starting D port into FDD and input “FD starting drive:>dport”.)

The D port status is displayed in the following form;

6.When the D port status is FFFFh (normal status), go to Procedure 4.

7.When the D port status falls into any status in Table 2-4, execute Check 1.

2-26 [CONFIDENTIAL] PORTEGE M780 Maintenance Manual (960-809)