Yamaha PSR-E423 Owner's Manual - Page 10

Setting Up Setting Up Setting Up Be sure to do the following operations BEFORE turning on the power. Power Requirements Although the instrument will run either from an optional AC adaptor or batteries, Yamaha recommends use of an AC adaptor whenever possible. An AC adaptor is more environmentally friendly than batteries and does not deplete resources. Using an AC Power Adaptor 1 Make sure that the [ ](Standby/On) switch of the instrument is in the "Standby" position. WARNING • Use the specified adaptor (page 86). The use of other adaptors may result in irreparable damage to both the adaptor and the instrument. 2 Connect the AC adaptor to the power supply jack. 3 Plug the AC adaptor into an AC outlet. CAUTION • Unplug the AC Power Adaptor when not using the instrument, or during electrical storms. 2 AC power adaptor 3 AC outlet Using Batteries 1 Open the battery compartment cover located on the instrument's bottom panel. 2 Insert the six new batteries, being careful to follow the polarity markings on the inside of the compartment. 3 Replace the compartment cover, making sure that it locks firmly in place. NOTE • Connecting the AC power adaptor automatically supplies power from the adaptor and overrides battery power, even when batteries are installed. For battery operation the instrument requires six 1.5V "AA" size, LR6 or equivalent batteries. (Alkaline batteries are recommended.) When battery power becomes too low for proper operation, make sure to replace all batteries, following the precautions listed below. If necessary, also make sure to save all important User data (see pages 50, 77). CAUTION • Be sure to install the batteries in the same direction, maintaining the correct polarity (as shown). Incorrect battery installation may result in heat, fire and/or leaking of corrosive chemicals. • When the batteries run down, replace them with a complete set of six new batteries. NEVER mix old and new batteries. Do not use different kinds of batteries (e.g. alkaline and manganese) at the same time. • If the instrument will not be used for an extended period of time, remove the batteries to prevent possible fluid leakage. NOTICE • Use only manganese or alkaline batteries for this instrument. Other types of batteries (including rechargeable batteries) may exhibit a sudden drop in power when the batteries are low, possibly resulting in a loss of flash memory data. • Please use the power adaptor when transferring data to flash memory. Batteries (including rechargeable types) can be drained rapidly by this type of operation. If the batteries do become drained during a data transfer, both the data being transferred and the data currently in the transfer destination will be lost. 10 Owner's Manual