Brother HL-4040CDN - Manual (Page 81)

Control Panel
72
4
LEDs
4
The LEDs are lights which show the printer status.
LCD
4
The LCD shows the current printer status. When you use the control panel keys, the LCD will change.
If there are any problems, the LCD will show the error message, maintenance message or call service
message so you will know that you need to take action. (For more information about these messages, see
LCD messages on page 144.)
Back light
4
Data LED (Yellow)
LED indication Meaning
On Data is in the printer memory.
Blinking Receiving or processing data.
Off No remaining data in the memory.
Direct Print LED (Blue)
LED indication Meaning
On USB flash memory or PictBridge digital camera is inserted into the USB direct
interface.
Off USB flash memory or PictBridge digital camera is not inserted into the USB
direct interface.
Light Meaning
Off The printer is off or in sleep status.
Green (General) Ready to print
Printing
Warming up
Red (Error) There is a problem with the printer.
Orange (Setting) Choosing a menu (Control panel menu, Reprint menu or Direct Print menu)
Pause