Brother MW-140BT - m-PRINT B/W Direct Thermal Printer User Manual page 37

If a system error has occurred:
The printer may be damaged. Contact the sales representa-
tive where it was purchased.
" Charging indicator light
With the charging indicator light, the status of
the power supply can be checked. The charg-
ing indicator light has two functions.
1 Checking the charging status (when the AC
adapter is connected)
Indicator
light color
Orange
2 Checking the battery level (while running off the built-in lith-
ium ion battery)
Indicator light status
Off
Flashes once
Flashes twice
Continues to flash 3 times
• When the battery level is less than 60% charged,
• If the charging indicator light flashes while the
22
Indicator light
status
Constantly lit
Off
Flashing
recharge the battery.
printer is printing, immediately connect the AC
adapter and charge the battery. The printer may
stop printing.
Printer status
Charging
Finished charging
Malfunctioning built-in battery
Battery level
More than 60% charged
Less than 60% charged
Less than 30% charged
Almost empty