Yamaha PSR-I425

10 PSR-I425 Owner’s Manual

Setting Up

Be sure to do the following operations BEFORE turning on the power.

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

Make sure that the [STANDBY/ON] switch of the

instrument is set to STANDBY.

Connect the AC power adaptor to the power supply

jack.

Plug the AC adaptor into an AC outlet.

■Using Batteries

Open the battery compartment cover located on the

instrument’s bottom panel.

Insert the six new batteries, being careful to follow

the polarity markings on the inside of the compart-

ment.

Replace the compartment cover, making sure that it

locks ﬁrmly in place.

For battery operation the instrument requires six 1.5V

“D” size, R20P (LR20) 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 page 56), since custom panel settings are

lost when the batteries are removed.

Power Requirements

• Use the speciﬁed adaptor (PA-3C, or an equivalent recom-

mended by Yamaha) only. The use of other adaptors may

result in irreparable damage to both the adaptor and the

instrument.

WARNING

•Unplug the AC Power Adaptor when not using the instrument,

or during electrical storms.

CAUTION

Adaptor AC outlet





• Connecting the AC power adaptor automatically supplies power from

the adaptor and overrides battery power, even when batteries are

installed.

NOTE

• 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, possi-

bly resulting in a loss of ﬂash memory data.

• 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.

• 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.

CAUTION