Alternate Serial Port Check

Use this option to test the functions of an additional serial communications (RS-232C) port. To perform the test you must insert a special loop-back connector into the alternate serial port so that the computer can check individual pins of the port.

This test is identical to the check for the primary serial port. For more details, see the description of the Serial Port (RS-232C Port) Check.

Dot-matrix Printer Check

Use this option to check the following:

Ei The operation of your printer in IBM-compatibility mode

DThe compatibility of your printer with the extended character set your computer uses

LI The ability of your printer to produce bit-image graphics and print images of the graphics screen.

When you select option 14 from the Device List, you see this prompt:

Is dot-matrix printer on-line ? (Y/N)

Check that your printer is connected to the computer and that it is turned on, loaded with paper, and online. Select Y to continue, or N to return to the menu.

Performing System Diagnostics C-31