4
■
Front panel
■
Rear panel
The PW3000M power supply should be installed in a well
ventilated location.
In particular, the front and rear panels must not be
blocked, since the ventilation path passes through them.
A
POWER ON/OFF
switch
After connections to the M3000 have been completed,
turn this switch on to supply power to the M3000.
B
Operation monitor
Four LEDs indicate the status of the power that is
being supplied to the M3000. Normally (i.e., when no
malfunction has occurred), the green LEDs (NOR-
MAL) will light. If a malfunction occurs, the LED for
that section of the power supply will go dark. Turn the
power off and wait for a time before turning the
power on again. If the same LED(s) are dark, contact a
Yamaha service center.
C
GND terminals
This is the grounding screw terminal. If hum or noise
occurs, ground (earth) the unit via this jack, or try
connecting it to the chassis of the other device.
D
DC OUTPUT
connector
Connect this connector to the M3000 to supply power
to it.
E
DC PARALLEL INPUT
connector
This connector allows two PW3000M units to be con-
nected in parallel. As shown in the following diagram,
use the included parallel connection cable to make
connections. In this case, the two PW3000M units will
each supply 50% of the power in normal operation.
Even in the unlikely event that one of the PW3000M
units failed, the other PW3000M will supply 100% of
the power, ensuring an uninterrupted power supply.
POWER
OPERATION MONITOR
POWER SUPPLY
ON/ OFF
NORMAL
+48V +12V +15V –15V

1 2

DC OUTPUT
CONNECT
DISCONNECT
PIN 2 +15V 4.2A
PIN 5 –15V 4.2A
PIN 6 +12V 4.1A
PIN 9 +48V 0.2A
DC PARALLEL INPUT
CONNECT
DISCONNECT
5 4
3
DC OUTPUT
CONNECT
DISCONNECT
PIN 2 +15V 4.2A
PIN 5 –15V 4.2A
PIN 6 +12V 4.1A
PIN 9 +48V 0.2A
DC PARALLEL INPUT
CONNECT
DISCONNECT
DC OUTPUT
CONNECT
DISCONNECT
PIN 2 +15V 4.2A
PIN 5 –15V 4.2A
PIN 6 +12V 4.1A
PIN 9 +48V 0.2A
DC PARALLEL INPUT
CONNECT
DISCONNECT
M3000
PW3000M
PW3000M
DC POWER
INPUT
DC OUTPUT
DC OUTPUT
DC PARALLEL
INPUT