Using Set-Up Mode5-34Using the Diagnostic FunctionsThe TESTS function allows you to diagnose the printer with the following two func-tions:z PRINT-T (printing test)z HEX-DUMP (hex dump)These functions are used for checking print quality and diagnosing printer problems.Hex dump also provides useful information for programmers. There are other optionsin the TESTS function, but they are restricted to the use of service personnel.Printing TestThe printing test function prints test pages independently of your computer to checkprinting operations and quality. It does not check the interface between the computerand the printer.The printing test prints all of the characters available in the ASCII character set. Forcolor printers with a color ribbon, printing occurs in four colors.To start the printing test, make sure that continuous forms paper is loaded into theprinter. Enter the Set-Up mode, and follow these steps:1. Start the printing test (select the PRINT-T option).Check that the red cursor is located under PRINT-T, and then press the È buttonor the Ç button. The printer selects (underlines) PRINT-T and starts printing. Ashort help menu is printed at the top of the page. Note that the printer is not readyfor the computer during this printing test.2. Exit the printing test.Exit the printing test in either of the following ways after printing a dozen lines:zTo exit the printing test and return to the menu, press the È button orthe Ç button.zTo exit the printing test and return to the menu, press the Exit/Save button.zTo exit the printing test and return to the Normal mode (Ready), press the Set-Up/Quit button. The printer temporarily saves any changes made while in theSet-Up mode and then returns to the Ready state.3. Examine the test page.
