User manual VIETA EV BOX 12 DATASHEET

[. . . ] Then time will be displayed on the screen, press POWER key to access power-on status to enjoy the music. [. . . ] In case of power supply with DC 5V transformer, disconnect the battery and use the external DC supply. Clock Settings: In Standby status, press AL/SET key for a longer time to enter into Clock Settings status, then the clock will be displayed, numbers on LED light will flash. Press AL/SET key again, HOUR figures on LED start to flash, you can press Previous Music/ Next Music key to adjust the hour; press AL/SET key again, HOUR figures on LED will be displayed stably and MINUTE figures start to flash, you can press Previous Music/ Next Music key to adjust the music and finally press AL/SET key to confirm the settings and exit from the clock status. Troubleshooting Guidance and FAQs: Before repairing this unit, please find out the possible causes as per the following FAQs to make simple troubleshooting if necessary, they may help you to solve the problems and resume the normal operations. If not, please get your product to the professional service men for maintenance. Q: No voice in play mode A: Please confirm if the unit is in PLAY status. [. . . ] B: Please confirm whether increase volume. Specifications: Output voltage (1KHz 0dB) Frequency response S/N Ratio Max. [. . . ]