Lexmark C912 Service Manual - Page 180

5055-xxx Setting configuration ID Use the configuration ID to communicate characteristics of the printer that cannot be determined by the hardware sensors. The configuration ID is originally set when the printer is manufactured, but must be reset whenever the engine board, containing NVRAM memory, is replaced The configuration ID can be set through the Diagnostic menus. When Configuration ID is selected from the PRINTER SETUP menu, the current ID is displayed: Configuration ID =123456 The left-most digit ('1' in this example) blinks, indicating it is the first digit to be changed. To change the value, press Menu until the desired value displays. Press Select to move to the next digit. The next digit ('2' in this example) blinks. Continue modifying each digit using this method. To skip a digit (and keep its current value), press Select. When Select is pressed after the final digit ('6' in this example), the configuration ID is validated. If the ID is invalid, then the Invalid ID displays momentarily on Line 2 before the ID re-displays. If the ID is valid, it is stored in NVRAM and the printer automatically activates the new setting. If a configuration ID has not been set, then upon entry into diagnostics, the configuration ID setup is the only Diagnostic function displayed until a valid ID is entered. 3-30 Service Manual