This is due to the lack of factory standard settings. Set methods are: (1) the MENU 10 FAC · LG to 1, CUSTOM · Under LOGO in P+/P-keys to select the characters position, with V+/V-selected the desired character; (2) changes made in the MENU 10 FAC · LG· POS (position) FAC · LG· COL (color code) to mark characters to meet the requirements, (3) to exit Debug menu, press the MENU key, enter the SYS-TEM (System) menu, LOGO (icon) to mark.