
2.4 System Board Troubleshooting
2 Troubleshooting Procedures
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 2-2 A set of tool for debug port test
The test procedures are follows:
1.
Connect the debug port test cable to the connector CN3490 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.
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.
8.
QOSMIO G50 Maintenance Manual (960-683)
[CONFIDENTIAL]
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Содержание Qosmio G50 Series
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Страница 44: ...1 Hardware Overview 1 9 AC Adapter 1 30 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Страница 45: ... CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
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Страница 351: ... CONFIDENTIAL Appendices ...
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Страница 366: ...Appendices Appendix A Handling the LCD Module A 6 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Страница 438: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Страница 440: ...Appendices Appendix F Wiring diagrams F 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Страница 442: ...Appendices Appendix G BIOS rewrite procedures G 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Страница 444: ...Appendices Appendix H EC KBC rewrite procedures H 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Страница 446: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...