Brother HL-1660e Series User Manual page 188

USER'S GUIDE
Lamps
4–4
The lamps light or blink to indicate the current printer status.
READY
LED indication Meaning
On Ready to print
Blinking Warming up
DATA
LED indication Meaning
On Data remains in the printer buffer. Pressing the
FORM FEED switch prints the data and clears
the buffer.
Blinking Receiving or processing data
ALARM
LED indication Meaning
On Some problem has occurred in the printer.
ON LINE
LED indication Meaning
On The printer is on-line and ready to print
Off The printer is off-line and stops printing.