15
Panel Descriptions
An Overview of the
MC-909
Rear Panel fig.0-02
1. POWER Switch
Turns the MC-909’s power on and off (p. 16).
2. AC Inlet
Connect the included power cable here (p. 16).
The unit should be connected to a power source only of
the type marked on the bottom of the unit.
3. USB Connector
This connector lets you use a USB cable to connect your computer to
the MC-909 (p. 135).
4. MIDI Connectors (IN, OUT)
These connectors connect the MC-909 with other MIDI devices,
enabling the sending and receiving of MIDI messages (p. 16).
•
IN:
This connector receives messages from another MIDI device.
•
OUT:
This connector transmits messages to another MIDI
device.
5. Digital Audio Interface
These are optical-type and coaxial-type S/P DIF format digital in/
out connectors.
S/P DIF:
A digital interface format used in consumer digital audio
devices.
The digital output connectors output the same audio signal as is
output from the MIX OUTPUT jacks.
6. INPUT Jack
Accept input of audio signals in stereo (L/R) from external devices.
If you want to use mono input, connect to the L jack.
When recording from a mic, connect it to the L jack, and set Input
Select (p. 34) to “MICROPHONE.”
7. MIX OUTPUT Jacks
These jacks output stereo (L/R) audio signals to your amp or mixer.
If you want to use mono output, connect to the L jack.
8. DIRECT 1 OUTPUT Jacks
The sound of the part/patch/rhythm set/tone/rhythm tone whose
Output Assign (p. 88, p. 89, and p. 90) you set to “DIR1” is output in
stereo (L/R) from these jacks to your amp or mixer. If you want to
use mono output, connect to the L jack.
9. DIRECT 2 OUTPUT Jacks
The sound of the part/patch/rhythm set/tone/rhythm tone whose
Output Assign (p. 88, p. 89, and p. 90) you set to “DIR2” is output in
stereo (L/R) from these jacks to your amp or mixer. If you want to
use mono output, connect to the L jack.
10. PHONES Jack
Headphones are plugged in here (p. 16).
11. Ground Terminal
927
Depending on the circumstances of a particular setup, you may
experience a discomforting sensation, or perceive that the surface
feels gritty to the touch when you touch this device, microphones
connected to it, or the metal portions of other objects, such as guitars.
This is due to an infinitesimal electrical charge, which is absolutely
harmless. However, if you are concerned about this, connect the
ground terminal (see figure) with an external ground. When the unit
is grounded, a slight hum may occur, depending on the particulars
of your installation. If you are unsure of the connection method,
contact the nearest Roland Service Center, or an authorized Roland
distributor, as listed on the “Information” page.
Unsuitable places for connection
• Water pipes (may result in shock or electrocution)
• Gas pipes (may result in fire or explosion)
• Telephone-line ground or lightning rod (may be dangerous in
the event of lightning)
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