Nothing is displayed on the product's screen. What should I do?
The product's LCD may not display anything when the product is in sleep mode, turned off, or needs to be charged. Do one of the following:
- Press any button to wake the product.
- Press and hold Start/Stop to turn on the product.
- Charge the product.
Note: To optimize battery life, make sure to charge the product at least once every 6 months, even if you have not used it for a long time.