Parallel Port (Printer Interface) Check

Use this option to test the operation of the primary parallel printer port. To perform the test, you must insert a special loopback connector into the parallel port so that the computer can check individual pins of the port. Contact your dealer if you need a loop-back connector. Note that a different connector is required to test the serial port.

When you select option 9 from the Device List, you see these prompts:

Attach loop-back connector to parallel port before starting the check.

Start the check ? (Y/N)

Insert the loop-back connector. Then select Y to start the check. The computer checks the port by writing and reading data and control information, and reports errors for any pins that are faulty. Note that if you connect a printer cable instead of a loop-back connector, you will get errors.

Alternate Parallel Port Check

Use this option to test the operation of an additional parallel port. To perform the test, you must insert the special loop-back connector into the alternate parallel port so that the computer can check individual pins of the port.

This test is similar to the Parallel Port Check. For more details, see the description of the Parallel Port (Printer Interface) Check.

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C - 2 8 Performing System Diagnostics