
Moun ng & Connec ng the Electronic Components
28
July 2013
Electronic Components
‐
Descrip on...
Driver Board Descrip on
There
are
fi
ve
Key
Note
Driver
Boards
used
in
the
Pianoma on
System.
They
are
all
iden cal
and
can
be
interchanged,
if
necessary.
1
ON/OFF
Main
Power
Switch
The
UNSW
OUT
socket
is
“hot”
when
switch
is
ON
2
FUSE:
7amp
250
volt
3
Processor
‐
Ribbon
Power
Cable
to
PMII
4
AC
INPUT
‐
From
home’s
AC
Outlet
5
SUST
PEDAL
‐
To
Sustain
Pedal
Solenoid
6
Moun ng
Bracket
Can
be
also
be
mounted
to
the
short
side
of
the
chassis
7
RAIL
PWR
‐
DC
Power
Harness
cable
to
Driver
boards
8
UNSW
OUT
‐
Un
‐
switched
AC
Out
(To
Wi
‐
Fi
device)
9
FOR
FUTURE
USE
10
SW
OUT
‐
To
Speaker
“Hot”
only
when
HI
light
is
ON
11
LO/HIGH
volt
LEDs.
Both
LEDs
must
be
out
before
con
‐
nec ng
or
disconnec ng
cables
Power Supply Descrip on
Do
not
connect
or
disconnect
any
cables
when
lit
Connect
Key
Solenoids
to
these
sixteen
2
‐
pin
connectors
High
Voltage
Light
Low
Voltage
Light
16
pin
male
connector
/
Connect
Note
Driver
Ribbon
cable
70128
From
PMII
Driver
Port
B
Four
pin
male
connector
/
Connect
Note
Driver
Power
cable
811437
From
Power
Supply
Rail
Power
1 2 3
4
5 6
7 8
9 10 11
Summary of Contents for PMII
Page 26: ...Installa on Procedure 26 July 2013 Installing the Steinway Sostenuto Assembly Order 70897 ...
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