Brother MOBILE PRINTER MW-140BT - Manual (Page 36)

Appendix
21
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.
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.
Indicator
light color
Indicator light
status
Printer status
Blue
Constantly lit
Waiting to receive data using
Bluetooth or the USB
Flashing Receiving data using Bluetooth
Flashing in long
intervals
Sleep mode (power-saving standby
condition, possible only when
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.
Error description Remedy
There is no paper cassette
installed.
The paper cassette is installed
facing the wrong direction.
There is no more paper.
Correctly install a paper cas-
sette containing paper.
A paper misfeed occurred. Remove the misfed paper.
A transmission error occurred.
Check the transmission status
on the computer or PDA screen.
An overheat error occurred.
The inside of the printer has started
to overheat. Wait until it cools down