1- Enter the diagnosis mode by pressing and holding the Menu (1) and Enter (4) keys as you turn on the printer.
2- Press the Menu (1, 5) keys to scroll through the list of test unit NV-RAM INITIAL appears on the upper display.
3- Press the Item (2, 6) keys to select either Table 1 or Table 2. The tables determine which NVRAM items will be initialized.
4- press and hold value (3) for 10 seconds to initialize the items of the selected table.