www.bigstone-nj.com
Address：NO.38 Ningliu Road, Pukou District, Nanjing City, China
Tel：025-89618445
Fax：025 – 58849541
Email: bigstone.ebike@gmail.com
14. CABLE DEFINITION
1 Red： Battery +
2 Blue： Weak lock
3 Black： Battery-
4 Green: UART-RECEIVE（RXD)
5 White: UART- SEND（TXD）
15. AUTO SLEEP AFTER 5 MINUTES
When the riding speed is 0 km/h for 5 minutes, the system will go to
sleep automatically.
COMMON PROBLEMS & SOLUTIONS
Q：Why the display is not able to start up？
A：Checking the connector that between display and controller.
Q：How to deal with the error code?
A：Fix it to the maintenance place immediately. If cannot be
resolved, you can go to the electric vehicle repair points repair it in a
timely manner.
QUALITY & W ARRANTY
QUALITY & W ARRANTY：
1、 Any quality problems in normal case and in guarantee
period, our company will responsible for the warranty
2、 The warranty time is 18 months from date of
purchasing.
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