How to deal with Bluetooth drops or disconnections

Customers who bought SEC-E9 know that successful SEC-E9 operation is based on successful Bluetooth connection. Once Bluetooth disconnects, the machine does not work properly, which brings some inconvenience to customers. Here Kukai focus on Bluetooth connection problem and tell you specific reasons why bluetooth drops and how to deal with it.


1. Incorrect boot sequence


The correct boot steps is:

A. Connect the power switch with power supply (Input Voltage is DC 100-240V) .

B. Clockwise twisting switch to turn on the machine, and then long press the switch of tablet till logo appears.

C. Please wait seconds, SEC-E9 will go to main page automatically.

D. Once you see the main page of SEC-E9 in tablet, it means the tablet and the machine get in touch with each other successfully.


So how to reboot in case anything happened. Here it is:

A. Press “Shutdown” button in the main page.

B.  Press the power switch to turn off the machine.

C. Please wait for 2 minites and then strictly follow in boot steps to do.


Here is a vedio to show you how to turn on and off SEC-E9 (Please strictly follow the video during the operation)




Firstly follow the correct steps to turn on SEC-E9. Please check the area in below picture, if it light blue it means that Bluetooth module operate normally, it will automatically macth and takes tens of seconds, please be patient and don’t touch any button on the screen.


If the Bluetooth disconnects, please find the bluetooth serial number by clicking the Bluetooth icon in the lower right corner, and click “remove device”and “Pair” again. Enter password “8888” and click “next”. If you can enter the main page successfully, that means the Bluetooth setting is completed successfully.


2. If you follow in correct boot way, but the blue light is not light in that area, please contact wiht our support team, we will guide you online how to deal with it.