Using the Control PanelChapter 3: Printing v 3-37The Indicator Lights The Control Panel contains four indicator lights. Table 3.3describes the function of each light.Table 3.3 Indicator lights and their functionsLight DescriptionOnline (Green) Lights when the printer is online.Flashes when the printer is transitioningfrom online to offline or to indicate that aprint job is being processed.Form Feed (Green) Lights when the printer experiences a formfeed timeout—that is, when a PCL job hasformatted a partial page, the printer iswaiting for more data in order to continueprocessing the job, and a 15 secondtimeout period has expired with no newdata arriving in the input buffer. Thistimeout applies to all ports.When lit, you can print a partial page byentering the Job menu, scrolling to theForm Feed item and pressing Enter. Whennot in the menu system, a partial page canbe printed by pressing Enter. PostScriptdoes not print partial pages andconsequently the Form Feed light is notturned on.Fault (Amber) Lights whenever operator intervention isrequired in order to allow printing tocontinue.Data (Green) Flashes to indicate that a print job is beingprocessed by either PostScript, PCL or PJL,or is being spooled to the optional harddisk (e.g., a proof or secure job).