Brother MFC-8660DN - Manual (Page 24)

Chapter 1
10
Note
When the power switch is off or the machine is in Sleep mode, the LED is off.
Red
Service error Follow the steps below.
1. Turn off the power switch.
2. Wait a few seconds, and then turn it back on and try to print
again.
If you cannot clear the error and you see the same service call
indication after turning the machine back on, please call Brother
Customer Service. (See Brother numbers on page i.)
Red
Cover open The front cover or fuser cover is open. Close the cover.
Toner Life End Replace the toner cartridge with a new one.
Paper error Put paper in the tray or clear the paper jam. Check the LCD
message.
Scan lock Check that the scanner lock lever is released.
Others Check the LCD message.
Out of memory Memory is full.