Disassembly Procedure; Removing Keyboard; Alignment Procedure - Moog Rogue 342A Technical Service Information

MOTE
All
adjustments
may be accomplished
WITHOUT
disassembly
and are accessible
through
the rear
panel holes using
a
1/8-inch
(3mm) screwdriver.
DO NOT
use excessive force
when
inserting
screw
driver or
damage
to
trim pot
may
result.
DISASSEMBLY
PROCEDURE
NOTE
Before proceding with disassembly, take care to
protect finished plastic
and metal parts
from
sharp
objects.
Use carpeted or
similarly
protected surface.
REMOVING BASE
Base removal
is
accomplished
by removing four
(4)
self
tapping screws
on
the
bottom of the unit
and one
(1)
sheet
metal
screw on the rear panel.
REMOVING CONTROL
BOARD
1
AND POWER SUPPLY
BOARD
2
Remove
all
rotary
and
slide
pot knobs.
Remove
the
four
(4)
3/3 nuts
and finishing
washers
from the
phone
jacks
on
the
rear
panel.
Release
Board
2
from
the rear
panel. Re-
move the three
(3)
screws
securing the front of
Board
1
to
housing.
Remove
the three
(3)
screws
from
the rear
panel
which secure the printed
circuit
board guide.
Remove
P.C.
Boards
1
and 2 together.
Disconnect key-
board and
left
hand control connectors.
Reconnect
prior to
reassembly of
P.
C,
Boards into
housing.
NOTE
During assembly,
the switch levers
must be placed
in
a
mechanically centered
position to clear
the front
panel
mounting
holes.
This center position
may
be
unrelated
to the actual
switch operating
positions.
Board
1
and Board 2 are
hard wired
together; avoid
excessive flexing
of wire
solder
connections.
REMOVING
KEYBOARD
This
is
accomplished by removing connector
to
Control
Printed Circuit
Board
1
and removing the four
(4)
screws
securing the
keyboard
frame nnd
mounting brackets
in
place
throi.:(jh
the base plate.
Separate the
keyboard from
the base.
Place
keybonrd
f.ico
down, using
cushioning material to
protect the keys.
REMOVING KEYS
Keys
may
be
removed with the
keyboard
in
the cabinet
if
replacement
becomes necessary.
Depress key
at
the
hole
in
the aft
key
surface.
This
will
permit
the rear
notches
in
the
key
to
disengage
from
the rear
bracket. Retain pressure
on key
at this
point, pull
forward
and
release.
Push back and
down
on
front
end
of key.
This
will dis-
engage the
key
hook from
its
mounting,
permitting removal.
A
compression
spring
is
mounted
on
a
boss
on
the
key and
can be
lifted
out.
To replace the key,
engage the
forward
hook on
the
key
in
the bracket, press rear
end of key
to
depress
compression
spring
and
move key
to the rear until
the
notches
on
the
key
engage the rear
bracket.
REMOVING KEYBOARD SWITCHES
In
order
to
remove the switch assembly, the
keyboard
must
be
removed from
the base
as
described above.
Remove mounting screws
from the switch
assembly on
the
bottom
of the
keyboard.
Remove
the
rear
mounting
brackets
and
the
switch assembly.
REMOVING
SIDE
MOTION AND KEY CONTACT GASKETS
Remove
screws
from
front
finger
bracket
on
the
keyboard
and
separate bracket
from
Its
mount.
Side
motion
gaskets
on the finger
bracket are
rubber. Re-
move by
pulling
out
from finger bracket.
With key removed,
the
key contact gasket
is
removed by
pulling
it
av^ay
from
key.
ALIGNMENT PROCEDURE
All
trim
adjustments can
be
made without opening the
unit. This
is
done by
using the trimpot
access holes, the
KEYBOARD
IN/OUT
jack
and the
AUDIO OUT
jack
which
arc
located
on
the back
of the
unit.
Allow unit to
warm
up
for
about 15 minutes before
making these
adjustments.
KEYBOARD SCALE
ADJUSTMENT
Set
GLIDE
control
R13
at
minimum.
Use
DVM
to
monitor voltage
at
the
tip
of the
KEY-
BOARD IN/OUT
jack J1.
Alternately depress
low
F and high
C
keys.
Adjust
"Keyboard
Scale
Trim"
R24
for
a
2.58
VDC
difference to ijchieve a
1
volt/octave
sr;alc
factor,
OSCILLATOR
1
SCALE,
FREQUENCY AND
HI
END
ADJUSTMENTS
Set the following controls:
MASTER VOLUME, R148
OSC
1
LEVEL, R116
Maximum
Maximum