Yamaha S90 ES User Manual

Rear Panel

instrument to the external USB storage device and load 
the data from the external USB storage device to the 
instrument. Save and Load operations are executed in 
the File mode. (Pages 50, 56, 76)

n For details about USB, see page 20 .

MIDI IN receives MIDI messages from an external MIDI 
device. Use this connector to control the synthesizer 
from an external MIDI device. MIDI OUT is for 
transmitting all control, performance and playback data 
from the S90 ES to another MIDI device, such as an 
external sequencer.
You can also play the external tone generator by using 
the S90 ES and control the external MIDI device.

MIDI THRU is simply for redirecting any received MIDI 
data (via MIDI IN) to connected devices, allowing 
convenient chaining of additional MIDI instruments.

Connect an optional breath controller BC3 here. You can 
use the Breath Controller to change the output level or 
tone of the sounds according to the strength of your 
breath.

For connection of optional FC3, FC4 or FC5 
Footswitches.
When connected to the SUSTAIN jack, the Footswitch 
controls sustain.
When connected to ASSIGNABLE, it can control one of 
various different assignable functions.

n The SUSTAIN jack can be used with the FC3, FC4, or FC5. The 

ASSIGNABLE jack can be used with the FC4 or FC5.

An optional foot controller (FC7, etc.) can be connected 
here. Each jack lets you continuously control one of 
various different assignable functions — such as 
volume, tone, pitch, or other aspects of the sound.

Line level audio signals are output from this instrument 
via these phone jacks (1/4" mono phone plug).
These outputs are independent of the main output (at 
the L/MONO and R jacks below), and can be freely 
assigned to any of the Drum Voice keys or the Parts. 
This lets you route specific Voices or sounds for 
processing with a favorite outboard effect unit.
The parts which can be assigned to these jacks are as 
follows:

• Drum Voice key to which the drum/percussion instrument is 

assigned

• Any Part of a Performance* 
• Any Part of a Multi*

* Including the Audio Input Part

Line level audio signals are output via these phone 
jacks. For monophonic output, use just the L/MONO 
jack.

For connection to a pair of stereo headphones.

External audio signals can be input via these phone 
jacks (1/4" mono phone plug). Various devices such as 
microphone, guitar, bass, CD player, synthesizer can be 
connected to these jacks and their audio input signal 
can be sounded as the AUDIO IN part of the 
Performance or Multi.
For stereo signals (such as from audio equipment), use 
both jacks. For mono signals (such as from a 
microphone or guitar), use only the L jack.

For adjusting the input gain of the audio at the A/D 
INPUT jacks (above). Depending on the connected 
device (microphone, CD player, etc.), you may need to 
adjust this for optimum level.

The mLAN expansion board (mLAN16E) sold separately 
can be installed to this instrument. 
With the mLAN16E board, you can conveniently and 
easily hook up your S90 ES to other mLAN compatible 
instruments or devices.

■ 

n The illustration above shows the panel of the mLAN16E expansion 

board with the included sticker label affixed. Make sure to attach 
this label to the mLAN16E (page 187).

For connecting mLAN devices or IEEE1394-compatible 
devices via IEEE1394 standard (6-pin) cables.

USB is an abbreviation for Universal Serial Bus. It is a serial 
interface for connecting a computer with peripheral devices, 
and enables much faster data transfer compared to 
conventional serial port connections.

“mLAN” is a digital network designed for musical 
applications. It uses and extends the industry standard IEEE 
1394 high performance serial bus.

mLAN EXP ANSION BO

ARD mLAN16E

ACTIVE

MADE IN JA

P A

N

IEEE1394

2

1