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APPENDIX B: Troubleshooting
By using the supplied serial utility diskette and following these simple steps,
most common problems can be eliminated.
1) Identify all I/O adapters currently installed in your system. This includes
your onboard serial ports, controller cards, and sound cards. The I/O
address used by these adapters, as well as the IRQ (if any) should be
identified.
2) Configure your serial interface so that there is no conflict with currently
installed adapters. No two adapters can occupy the same I/O address.
3) Make sure the Serial Interface is using a unique IRQ. While the Interface
does allow the sharing of IRQs, many other adapters (such as SCSI
adapters and onboard serial ports) do not. The IRQ is typically selected
via an onboard header block. Refer to Chapters 3 and 4 for help in
choosing an I/O address and IRQ.
4) Make sure the Four Port RS-232 Serial Interface is securely installed in a
motherboard slot.
5) Use the supplied diskette and this manual to verify that the Serial
Interface is configured correctly. The supplied diskette contains a
diagnostic program (SSD) that will verify if an adapter is configured
properly. This diagnostic program is written with the user in mind and is
easy to use. Refer to the README file on the diskette for detailed
instructions on how to use the SSD program.
6) These are know I/O conflicts:
• The 278 and 378 settings may conflict with your printer I/O adapter.
• 3B0 cannot be used if a monochrome adapter is installed.
• 3F8-3FF is typically reserved for COM1:.
• 2F8-2FF is typically reserved for COM2:.
• 3E8-3EF is typically reserved for COM3:.
• 2E8-2EF is typically reserved for COM4:.
7) Refer to the diskette for any post-production manual updates and
application-specific information.
Appendix B. Troubleshooting
