Yamaha YSV104 YSV104_Owners Manual_EN - Page 11

 Installing/Replacing batteries The device is powered by two AA alkaline or nickel-metal hydride* batteries. * The device may not function properly due to the discharging characteristics of some nickel-metal hydride batteries. CAUTION Before replacing batteries, make sure that the power is switched "OFF". 1 Remove the battery compartment cover on the back of the unit, and remove the old batteries. 2 Install the new batteries following the polarity markings in the illustration. 3 Replace the battery compartment cover. * The indicator lights red when battery power is low. The unit automatically switches off when power is depleted. Please replace the batteries with a fresh set as soon as possible. * For more information on battery use, please refer to the "PRECAUTIONS" section (page 3). Battery cover Two AA alkaline or nickel-metal hydride batteries  About the Auto power off function In order to prevent unnecessary power consumption, the unit is equipped with an Auto power off function that automatically switches the power OFF if no signal is detected from the Instrument jack ( ) for 30 minutes. If the power turns off because of this function, simply slide the power switch to the OFF position and then back to the ON position again (reboot). 10 EN