Brother MW-140BT Indicator lights, "Status indicator light

Appendix

Indicator lights

"Status indicator light

A blue or green light indicates the printer is operating correctly, while a red light indicates an error has occurred.

Indicator	Indicator light	Printer status
light color	status
	Constantly lit	Waiting to receive data using
		Bluetooth or the USB
Blue	Flashing	Receiving data using Bluetooth
	Flashing in long	Sleep mode (power-saving standby
		condition, possible only when
	intervals	receiving data using Bluetooth)
Green	Constantly lit	Waiting to receive data using USB
	Flashing	Receiving data using USB
Red	Flashing	An error has occurred.
	Constantly lit	A system error has occurred.

When the status indicator light is blue, it is possible to receive data using both the Bluetooth and USB interfaces. However, once a connection is established using one of the interfaces, data cannot be received using the other interface until printing is complete.

If an error has occurred, check for the following causes.

Error description	Remedy
There is no paper cassette
installed.	Correctly install a paper cas-
The paper cassette is installed
	sette containing paper.
facing the wrong direction.
There is no more paper.
A paper misfeed occurred.	Remove the misfed paper.
A transmission error occurred.	Check the transmission status.
An overheat error occurred.	The inside of the printer has started
	to overheat. Wait until it cools down

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