HP 2420 Service Manual - Page 46

Control-panel buttons Button (HELP) (BACK) MENU (UP) (SELECT) (DOWN) STOP Function ● Provides information about the message on the graphical display. ● Backs up one level in the menu tree or backs up one numeric entry. ● Exits menus if held down for more than 1 second. ● Opens and closes the menus. ● Navigates to the previous item in the list, or increases the value of items that are numerical in nature. ● Clears an error condition when the condition is clearable. ● Saves the selected value for an item. ● Performs the action that is associated with the item that is highlighted on the graphical display. ● Navigates to the next item in the list, or decreases the value of items that are numerical in nature. ● Cancels the current print job in process and expels all of the active pages from the paper path. The time that it takes to cancel the job depends on the size of the print job. (Press the button only once.) Also clears continuable errors that are associated with the canceled job. NOTE The control panel lights cycle while the print job is cleared from both the printer and the computer, and then the printer returns to the ready state (Ready light on). 32 Chapter 3 Operation ENWW