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serial port, and you want to drive the RPP300 portable mini printer, please consult
your PC supplier.
4.4 Indicator Light and Buzzer Signal Description
Printer has a buzzer and two indicators light that used to prompt the user the
status of the printer, the light is used to represent the current status of the printer, and
buzzer used to prompt the printer status changes. Two indicator lights are respectively
function indicator light and charge indicator.
Feed Paper
Indicator
(green)
Power Indicator
3pcs(blue)
Error Detection
（
red
）
Printing
Status
Long lighting
3 lightings blink
circularly from left to
right
off
On charge
Long lighting
off
Long
lighting
Low level
Long lighting
Long lighting
(all is on
）
off
Finish
charging
Long lighting
Long lighting
(based on electric
quantity)
off
Power on
Long lighting
Long lighting
(based on electric
quantity)
Long lighting
Abnormal
off
off
off
Power off
