Lexmark E320 Service Manual - Page 157

4500-E320/E322 Restoring factory defaults Restoring factory defaults returns the printer settings to the original factory settings. Go to the Special function menu (page 3-11) and perform the following: 1. Select Reset Defaults mode by double pressing the operator panel button until the Toner Low light is on. 2. Perform a long button press until all lights are on solid. The printer is reset to factory defaults. Enter Hex Trace mode When the printer is in hex trace mode, it prints a hexadecimal and a character representation of a print job. The printer does not recognize any print controls or commands in this mode. A hex trace printout can be used to help isolate the cause of print problems. This is done by checking the control codes embedded within a print job. Go to the special function menu (page 3-11) and perform the following: 1. Select enter Hex Trace mode by double pressing the operator panel button until the Paper Jam light is on. 2. Perform a long button press until all lights are on solid. The printer is reset to factory defaults. Hex Trace mode can be exited by turning off the printer, or by pressing and holding the operator panel button to reset the printer. Diagnostic aids 3-21