Operator panels > 21B420DN, B430 DN,OPERATOR PANELThe B420dn, B430dn operator panel consists of a menu driven control panel, an LCDdisplay and two LED indicators.PANEL ELEMENTS1. Liquid crystal display. (LCD) panel. Two rows of up to 16 alphanumeric digitsdisplaying print status, menu items in menu mode and error messages.2. Menu Scroll Buttons. Press briefly to enter the MENU mode. Press briefly again toselect the next menu. Press for more than 2 seconds to scroll through the differentmenus.3. Back button. Press briefly to return to the previous higher level menu item or exitthe menu when in MENU mode.4. Enter button. In the ONLINE or OFFLINE mode: press this briefly to enter the MENUmode. In the MENU mode: press this briefly to select the menu or setting indicated onthe LCD.5. Online button. Press to switch between ONLINE and OFFLINE status.Press to exit the menu and displays ONLINE, when in the MENU mode.6. Cancel button. When printing press to cancel a print job. Press to exit the MENUmode and go ONLINE, when in the MENU mode.7. Ready indicator (green). ON indicates ready to receive data. FLASHINGindicates processing data. OFF indicates Offline.8. Attention indicator (red). ON indicates a warning (e.g. low toner). FLASHINGindicates an error, (e.g. toner empty). OFF indicates normal condition.NOTEWhen pressed with DATA displayed (press and hold for five seconds), it forcesthe printer to print out the remaining data in the printer.NOTEWhen pressed in Menu mode, the Online button returns the printer to ONLINEstatus. Also when there is an error indicating wrong paper size, pressing theOnline button forces the printer to print.1 23 45678