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.