Users Guide

6-4 Installation and Troubleshooting Guide
3. Check the contents of the start-up files. See “Installing and Configuring
Software” in Chapter 4, “Finding Software Solutions.”
Are the port configuration commands correct?
Ye s . Go to step 5.
No. Go to step 4.
4. Change the necessary statements in the start-up files. If the port problem is
confined to a particular application program, see the application program's
documentation for specific port configuration requirements.
Is the problem resolved?
Ye s . You have fixed the problem.
No. Go to step 5.
5. Reboot the system from the diagnostics diskette, and run the serial ports test in
the Dell Diagnostics.
Did the tests run successfully?
Ye s . Go to step 6.
No. See Chapter 10, “Getting Help,” for instructions on obtaining technical
assistance.
6. If the problem persists, go to the following section, “Troubleshooting a Serial I/O
Device.”
Troubleshooting a Serial I/O Device
If the procedure in “Troubleshooting the Basic I/O Functions” indicates that the
problem is with a device connected to the serial port, perform the following steps:
1. Power off the system and any peripheral device connected to the serial port.
2. Swap the interface cable that connects the device to the serial port with a known
working cable.
Is the problem resolved?
Ye s . The interface cable must be replaced. See Chapter 10, “Getting Help,” for
instructions on obtaining technical assistance.
No. Go to step 3.
3. Power off the system and the serial device, and swap the device with a
comparable working device.
For example, if the serial mouse has a problem, swap it with a serial mouse that
you know is working properly.
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