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Basics Section Quick Guide Reference Appendix
Setting Up
Setting Up
Power Supply
1
Make sure the POWER switch on the S90 is set to OFF.
2Connect the supplied power cord to the AC INLET
terminal on the instrument’s rear panel.
3Connect the other end of the power cord to an AC
outlet. Make sure your S90 meets the voltage
requirement for the country or region in which it is
being used.
Make sure your S90 is rated for the AC voltage supplied
in the area in which it is to be used (as listed on the rear
panel). Connecting the unit to the wrong AC supply can
cause serious damage to the internal circuitry and may
even pose a shock hazard!
Use only the AC power cord supplied with the S90. If
the supplied cord is lost or damaged and needs to be
replaced, contact your Yamaha dealer. The use of an
inappropriate replacement can pose a fire and shock
hazard!
The type of AC power cord provided with the S90 may be
different depending on the country in which it is
purchased (a third prong may be provided for grounding
purposes). Improper connection of the grounding
conductor can create the risk of electrical shock.
Do NOT modify the plug provided with the S90. If the
plug will not fit the outlet, have a proper outlet installed
by a qualified electrician. Do not use a plug adapter
which defeats the grounding conductor.
Power-on Procedure
Once you’ve made all the necessary connections (page
15) between your S90 and any other devices, make
sure that all volume settings are turned down all the
way to zero. Then, turn on the every device in your
setup in the order of MIDI masters (senders), MIDI
slaves (receivers), then audio equipment (mixers,
amplifiers, speakers, etc.). This ensures smooth signal
flow from the first device to the last (first MIDI, then
audio). When powering down the setup, first turn
down the volume for each audio devices, then switch
off each device in the reverse order (first audio devices,
then MIDI).
When using the S90 as MIDI receiver:
Turning on the S90
Before you switch your S90 on or off, first turn down the
volume of any connected audio equipment.
1Press the POWER switch.
After a while, the default display appears (as set in
the Utility parameter, Power On Mode Display).
nAdjusting the display contrast if the LCD is difficult
to read, adjust the contrast with the LCD contrast
control knob (page 12).
2Raise the sound system volume to a reasonable
level.
3Gradually raise the MASTER VOLUME control
while playing the keyboard to set the desired
listening level.
AC INLET terminal
Power cord
(included)
12345678910111213141516LR
MUSIC SYNTHESIZER
Modular Synthesis Plug-in System
MIDI master (transmitting device)
S90 as MIDI slave (MIDI receiving device)
Audio equipment (first mixer, then amplifier)
POWER
ON!
AC INLET
POWER
ON/ OFF
14


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Yamaha S90 Installation Guide - English - 34 pages

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Yamaha S90 User Manual - Dutch - 137 pages

Yamaha S90 User Manual - French - 139 pages

Yamaha S90 User Manual - French - 34 pages

Yamaha S90 User Manual - Italian - 138 pages

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