Ruizu D05 User Manual page 24

can continue your play by wake it up. See "Basic
Operations" about how to get into sleep mode.
Q: Why buttons on the player can't work?
A: Sometime customer will accidentally active lock
screen function which prevent button been used.
Please see"Lock Screen" to unlock the button. If it
still won't work for you, please contact RUIZU
Customer Service to claim your warranty. See
Cover.
21