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Using the Control Panel
Chapter 3: Printing ❖ 3-11
The Indicator Lights
The Control Panel contains four indicator lights. Table 3.4
describes the function of each Indicator Light.
Table 3.4 Indicator lights and their functions
Light Function
On Line (Green)
Lights when the printer is online.
Flashes when the printer is going from online to offline.
Form Feed (Green)
Lights when the printer experiences a form feed timeout—that is,
when a PCL job has formatted a partial page, the printer is waiting for
more data in order to continue processing the job, and a user-defined
timeout period has expired with no new data arriving in the input
buffer. This timeout applies to all ports. The timeout value may be set
to any value between 5 and 300 seconds. The default value is 30
seconds.
When lit, you can print a partial page by entering the Job menu,
scrolling to the Form Feed item and pressing Enter . When not in
the menu system, a partial page can be printed by pressing Enter .
PostScript does not print partial pages and consequently the Form
Feed light is not turned On.
This light is turned Off when either an actual Form Feed character is
received or the Form Feed function is invoked by pressing Enter
on the Job Menu when the Form Feed item is displayed.
Fault (Amber)
Lights whenever operator intervention is required in order to allow
printing to continue.
Data (Green)
Flashes to indicate that a print job is being processed by either
PostScript, PCL or PJL, or is being spooled to the disk (e.g., a proof or
secure job). If data are not being processed, or either PostScript or
PCL is processing a job but waiting for data (input buffer empty), this
light is Off.