Preparation; Power Supply - Yamaha PortaSound PSS-51 Owner's Manual

PREPARATION
Ш POWER SUPPLY
Using the Optional AC Power Adaptor
Plug the DC output cable from any of the op-
tional Yamaha AC Power Adaptors listed above
into the DC 9-12V IN jack on the rear panel of
the PSS-51. Then, plug the AC cable of the
power adaptor into a convenient AC power wall
socket. The internal batteries, if present, are
automatically disconnected when the AC adaptor
is used.
* ONLY use Yamaha PA-3, PA-4, or PA-40 AC Adap-
tors to power the PSS-51. Incompatible adaptors may
cause irreparable damage to the unit, and may pose a
serious shock hazard!
Using Batteries (sold separately)
The PSS-51 uses six 1.5V SUM-2, "С" size, R-14 or equivalent batteries. When the batteries'
voltage is low and no longer is able to operate the PSS-51, "b a t" will appear on the MULTI
DISPLAY. Replace the batteries with a complete set of six new batteries, NEVER mix the old
batteries with the new,
Install new batteries as follows:
1. Turn the power switch OFF.
3. Remove the old batteries and dispose of them in an environmentally safe manner.