Oki ML420n Guide: User's, ML420/421 (English) - Page 90
Testing the Printer
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Testing the Printer • Font Sample Test • Rolling ASCII Test • Hexadecimal Dump Mode Font Sample Test The Font Sample Test prints a sample of the fonts standard to the printer. The top of the printout shows the Printer Model, Emulation, Country Code, Interface, and Firmware Revision Level. 1 Make sure paper is loaded. 2 Turn off the printer. 3 Press and hold the LF key while turning the printer back on. The printer prints a page of font samples and the test ends. Important! Wide carriage Model ML421: If you are using 8.5" paper to run the tests, make sure the paper width selection in the printer menu is set to 8.5 inches. Otherwise, printing on the platen may damage the printer. See Chapter 4: Menu Mode for more information. 90 Microline 420/421 User's Guide