Moog The source Operating and installation instructions

MANUAL

NO.

993-045393

002

TECHNICAL

SERVICE

INFORMATION

for

www.oldschool-sound.com

s!(

$$$

No«

For

Resale

$$$

CAUTION

These

servicing

instructions

are

for

use

by

qualified

personnel

only.

To

avoid

risk

of

electric

shock,

do

not

perform

any

servicing

other

than

that

described

in

the

Owner's

Manual

unless

you

are

qualified

to

do

so.

Refer

all

servicing

to

qualified

service

personnel.

MOOG

MUSIC

INC.

2500

Walden

Avenue.

Buffalo.

Naw

York

14225

MOOG

MUSIC

p/a

Waalhavan

Zuid

Zi|da

48.

3088

MJ,

Roller

dam.

The

Netherlands

7

l6-gSI--7**e

Thaaa

drawings

and

specifications

ara

the

property

of

Moog

Music

Inc.,

and

shall

not

be

reproduced

or

copied

in

whole

or

in

part

as

the

basis

for

manufacture

or

sale

of

the

Hems.

COPYRIGHT

-

1981

MOOG

MUSIC

INC.

SPECIFICATIONS

KEYBOARD

Description:

37

Note

C

to

C,

Low

note

priority

Keyboard

Transpose:

+1

Octave

(Left

hand

control)

Glide

Time:

Linear,

continuously

variable

from

less

than

2

msec

to

5

sec

(bottom

to

top

of

keyboard)

MODULATION

Rate:

Continuously

variable

from

0.25Hz

to

325Hz

Amount

(Square

wave):

Oscillator,

zero

to

16

semitones

Filter,

zero

to

5

octaves

OSC

1

AND

OSC

2

Reference

frequency:

Low

C

32'.

32.7Hz

+/-

0.1Hz

Scale

factor

accuracy:

0.21%

from

65Hz

to

1.5kHz

Range

drift

due

to

temp:

0°C

to

40°C

less

than

0.02%/°C

Pulse

duty

cycle:

Continuously

variable

from

5%

to

95%

Octave

accuracy:

0.2%

Output

level

range:

80dB

Interval

range:

2.1

Octaves

Interval

cal

range:

♦

/•

3%

VCF

Type:

Low

pass

24dB/octave

cutoff

slope

with

variable

height

resonant

peak

at

cutoff

frequency.

Range

of

cutoff:

30Hz

to

25kHz

Keyboard

tracking

accuracy:

Full

mode.

.05%

(30Hz

to

20kHz)

Sweep

of

cutoff

frequency

by

contour

generator:

10

octaves

CONTOUR

GENERATORS

Type:

Microprocessor

controlled

ADSR,

retnggorablu

Range

of

attack,

decay,

release

times:

1

msec

to

10

sec.

Range

of

sustain

level:

0

to

100%

of

peak

contour

VCA

Audio

output

level:

OdBm

Dynamic

range:

80dB

Output

offset:

Less

than

100MV

REAR

PANEL

I/O

Fine

tune:

+/-

3

semitones

KB

CV

IN/OUT:

1

V/oclave

♦

/-

2%

Input

impedance

-

50K

ohm

Output

impedance

■

IK

ohm

S-Trigger

in:

Switch

closure

to

ground

triggors

contour

generators,

input

impedance

greater

than

IK

ohm

S-Trigger

out:

Trigger

on

is

switch

closure

to

ground

Cassette

I/O:

Tape

interface

with

transport

on/off

control

Audio

Output:

OdBm.

Output

impedance

-

600

ohms

POWER

REQUIREMENTS

Operating

voltage

range

Domestic:

95

to

130

VAC

60Hz

Export:

200

to

260

VAC

50Hz

Power

consumption:

Less

than

30

watts

DIMENSIONS

AND

WEIGHT

Overall

size:

26-3/8"

wide,

12-1/2"

deep.

3"

high

(67cm

x

31.75cm

x

7.62cm)

Net

weight:

22

lbs.

(48.51kg)

WARNING

Hazardous

voltages

are

present

in

power

sup¬

ply

circuit.

Disconnect

AC

supply

cord

prior

to

disassembly.

Exercise

care

when

making

tuning

adjustments

with

unit

operating

to

avoid

contact

with

exposed

wiring

near

pri¬

mary

switch

and

fuse

holder.

Carefully

r

board

mounting

Lower

base,

rerr

left

side.

Use

a

s

up

housing

to

g£

Increments

screws

located

u

remove

knob

fo

CAUTION

Digital

Memory

circuits

are

powered

by

a

3V

lithium

battery,

BT-1.

DO

NOT

short

circuit,

overload

or

attempt

to

charge

this

cell.

Ex¬

plosion

and

release

of

corrosive

chemicals

may

result.

Power

Sup

screws

at

front

£

plate

at

rear,

wh

housing.

Power

removed

withou

Digital

andi

by

plastic

clips,

clips

to

avoid

br

required.

DISASSEMBLY

PROCEDURE

NOTE

Before

proceding

with

disassembly,

take

care

to

protect

finished

wood

and

lacquered

metal

parts

from

sharp

objects.

Use

carpeted

or

similarly

protected

surface.

To

gain

access

to

tuning

adjustments,

bottom

assembly

including

keyboard

must

be

separated

from

upper

housing.

Start

by

removing

(2)

screws

from

lower

rear

panel

located

on

either

side

of

Moog

logo.

Place

unit

upside

down

and

remove

(4)

screws

holding

bottom

to

wood

ends.

Remove

rear

key¬

board

mounting

screws

near

center

of

bottom

and

loosen

(3)

front

keyboard

machine

screws

until

they

are

finger

tight.

Place

unit

on

its

feet,

lift

rear

edge

approxi¬

mately

one

inch

and

tilt

forward

to

release

housing

from

front

groove.

Slide

housing

forward

to

clear

keys.

Lift

and

rotate

front

of

housing

up

and

rest

on

rear

panel.

Take

care

not

to

stress

flexible

"tails"

on

membrane

switch

which

connect

this

panel

to

a

P.C.

Board

at

rear

of

unit.

ror

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10

P14

H.«k«.

10

PIS

Mm*..

10

PI#

M.a*.,8P

Ul

1C.

Vo*i»(t

U?

1C.

Opout*

UJ

U4

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TroWita,

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Ttaorttoi.

03

IrUHillOl.

04

Turn*

to*.

cm

Do*.

Rk«

CR2

Do*.

Rk

CH3

Do*.

Rk*

CR4

Oo*.

Rk*

CRB

Oo*.

Z**

CR#

Oo*.

Rk*

CR7

Oo*.Rk*

CR8

Oo*.

Rk*

CR9

Oo*.

Rk*

CRIO

Do*.

Rk

CRII

Do*.

Rk*

CRI?

Do*.

Rk*

CRI3

Do*.

Rk*

Cl

<**

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..

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C6

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ce

Ckhoioc.1

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<**OIO>.

R4

Rkiiioi.

Tr

RI4

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Tr

&

S'

Carefully

rotate

base

up

to

gain

access

to

key¬

board

mounting

screws

and

remove

(3)

front

screws

Lower

base,

remove

keyboard

assembly

and

set

to

left

side.

Use

a

screwdriver

or

similar

tool

to

prop

up

housing

to

gain

access

to

trim

adjustments.

NOTES

1.

UNLESS

OTHERWISE

SPECIFIED

-

ALL

RESISTORS

ARE

IN

OHMS,

l/4W,±

57..

ALL

CAPACITORS

ARE

IN

MFD

(u*).

ALL

DIODES

ARE

IN4004.

2.

F2,F3*F4

USED

ON

EXPORT

220VAC

ONLY,

Incremental

control

assembly

is

retained

by

12)

screws

located

under

knob.

Loosen

set

screw

and

remove

knob

for

access.

Power

Supply

P.C.

board

is

retained

by

(2)

screws

at

front

and

an

aluminum

heat

sink

coupler

plate

at

rear,

which

in

turn

is

bolted

to

rear

of

housing.

Power

transistors

are

socketed

and

can

be

removed

without

removal

of

P.C.

board.

iRN/YEL

WHT

Digital

and

Synth

Board

assemblies

are

retained

by

plastic

clips.

Care

should

be

taken

when

bending

clips

to

avoid

breakage

should

board

removal

be

required.

DOMESTIC

MODEL

341A

potvfn

sum

y

no

oocm

r

board

MMdt..3Pwi..lS«0

iMfcmfl

MMdrf.

3

Pwi.

1S6

O

LodUr*

MMdtf.

lOPm.

.1000

.

MMdrf.IOPWi.TOOO

HMdrf.

TOPWi.

.1000.

?care

metal

220

VAC

50-60HZ

T250*7?A

ALIGNMENT

PROCEDURE

All

other

contour

functions

KB

TRANSPOSE

Center

Pitch

Wheel

0

osc

2

I

In

normal

service.

The

Source

does

not

require

tuning.

However,

when

components

are

replaced,

the

alignment

procedure

outlined

below

should

be

followed

in

the

sequence

indicated

in

order

to

pro¬

vide

proper

adjustment.

Component

designators

refer

to

P.C.

Board

Schematics.

Access

to

some

trim

adjustments

require

removal

of

the

keyboard.

Allow

the

instrument

to

warm

up

for

approximately

30

minutes

prior

to

starting

alignment

procedure.

POWER

SUPPLY

ADJUSTMENTS

POWER

SUPPLY,

BOARD

1

Set

+15V

supply

by

adjusting

+15V

trim

R14

for

-1-15.000V

+/-

lOmV.

Set

-15V

supply

by

adjus

ting

-15V

trim

R4

for

-15.000V

*/-

lOmV.

Check

both

+5V

supplies

for

+5.0V

+/-

0.2V.

SYNTH,

BOARD

2

Connect

DVM

to

emitter

of

Q1.

Set

♦

lOV

supply

for

+10.000V

+/-

lOmV

by

adjusting

10V

ADJ

trim

R12.

D/A

CONVERTER

ADJUSTMENT.

BOARD

3

Put

OSC

1

LEVEL

in

edit

and

set

to

0.

Adjust

D/A

ZERO

trim

R60

for

0.000V

♦

/-

2mV.

(Connect

DVM

to

U12

1

on

Synth

Board

2.)

Set

OSC

1

LEVEL

to

99.

Adjust

D/A

FULL

SCALE

trim

R62

for

10.000V

+/-

2mV,

Connect

DVM

to

KB

buss.

Connector

(P36

4),

press

high

C

and

adjust

KY8D

trim

R72

for

8.824V

+/-

5mV.

Connect

reference

oscillator

set

to

65Hz,

through

series

4.7K

resistor

and

lOuf

capacitor,

to

connector

P23-7.

Depress

low

C

and

zero

beat

using

RANGE

trim

R127.

Depress

high

C

and

zero

beat

using

SCALE

trim

R123.

Check

low

C

and

repeat

above

procedure

if

necessary.

OSC

1

OCTAVE

ADJUST

Set

up

the

same

as

for

Scale

Adjust.

Depress

low

C

and

zero

beat

using

rear

panel

FINE

TUNE

R228.

Change

OSC

1

FOOTAGE

to

8'

and

zero

beat

using

OCT

trim

R122.

Repeat

until

both

ends

zero

beat.

OSC

1

HIGH

END

COMPENSATION

Set

up

the

same

as

for

Scale

Adjust

except

set

OCT

1

to

8'

and

KB

TRANSPOSE

to

+1.

Depress

low

C

and

zero

beat

using

rear

panel

FINE

TUNE

R228.

Depress

high

C

and

zero

beat

with

Osc

1

HIGH

trim

R100.

OSC

1

TUNE

CHECK

When

high

end

compensation

is

set.

check

SCALE

and

OCTAVE

adjustments.

If

they

have

changed,

re¬

peat

steps

above

until

all

are

correct.

SYNTHESIZER

CIRCUIT

ALIGNMENT,

BOARD

2

0“

2

SCALE

OSC

1

SCALE

ADJUST

Set

control

panel

to

the

following:

GLIDE

0

MOD

OFF

OCT

1

32'

W/S1

SAW

SYNC

OFF

OSC

1

LEVEL

99

NOISE

0

OSC

2

LEVEL

0

CUTOFF

0

EMPHASIS

0

COUTOUR

AMT

99

Both

SUSTAINS

99

Set

control

panel

the

same

as

for

Osc

1

Scale

Adjust

with

the

following

exceptions:

OSC

2

LEVEL

99

OCT

2

32'

INTERVAL

1

The

procedure

is

the

same

as

for

Osc

1

Scale

Adjust

except

use

OSC

1

as

a

reference

pitch

and

adjust

SCALE

trim

R72.

OSC

2

OCTAVE

ADJUST

Follow

the

same

procedure

used

for

Osc

1

except

change

OSC

2

FOOTAGE

between

32'

and

8'

(OSC

1

FOOTAGE

remains

at

16')

and

adjust

OCT

trim

R71.

Fi

adjust

OSC

21

OSC

2

F

St

0!

0

!

IN

Tc

STORE

increml

for

zerc

INTERV

Ti

U7A,p

a

10V

t

up

and

trim

R7

FILTER

Se

TF

OS

CL

EN

CC

LC

VC

Str

ted

to

ai

trim

R1

FILTER

Sei

Ladder

I

LOUDN

Ho

of

1140/

the

samt

OSC

2

HIGH

END

COMPENSATION

FILTER

EMPHASIS

ADJUST

Follow

the

same

procedure

used

for

Osc

1

except

adjust

HIGH

trim

R39.

lugh

or

OSC

2

TUNE

CHECK

Using

the

same

control

panel

settings

as

above

ex¬

cept

EMPHASIS

at

80.

adjust

EMPH

trim

R164

until

filter

just

begins

to

oscillate

(observe

on

scope).

Refer

to

Osc

1

Tune

Check

procedure.

FILTER.

SCALE

AND

RANGE

ADJUST

im

OSC

2

RANGE

ADJUST

Set

the

following

controls:

OSC

1

OCTAVE

OSC

2

OCTAVE

INTERVAL

To

access

Osc

2

AUTO

TUNE,

press

and

hold

STORE

and

press

OSC

2

LEVEL.

Set

to

50

using

incremental

control

knob.

Adjust

RANGE

trim

R78

for

zero

beats

(unison).

INTERVAL

MONOTONICITY

Turn

OSC

1

LE

VE

L

to

0

and

connect

scope

to

U7A.

1

(2V/DIV

DC).

Turn

up

INTERVAL

until

a

10V

transition

occurs

on

scope.

Move

INTERVAL

up

and

down

through

this

transition

and

adjust

INT

trim

R70

for

a

minimum

pitch

change.

Return

control

panel

settings

to

LEVEL

BAL

ANCE

setup

and

place

KB

TRACKING

to

FULL.

Connect

reference

oscillator

in

the

same

manner

used

for

Osc

1

Scale

Adjust

except

set

frequency

at

80Hz.

I

Depress

low

C

and

zero

beat

using

SCALE

trim

R155.

Depress

high

C

and

zero

beat

by

adjusting

RANGE

t

trim

R152.

Repeat

above

steps

until

both

ends

are

correct.

CUTOFF

MONOTONICITY

Using

the

same

control

panel

setup

as

in

the

pre¬

vious

step

except

CUTOFF

at

50,

connect

scope

to

U8A.

1

(2V/DIV

DC).

Turn

up

CUTOFF

control

while

watching

for

a

10V

transition

on

scope.

Turn

CUTOFF

control

up

and

down

just

enough

to

cause

this

transition

to

occur

and

adjust

CUTOFF

trim

R146

for

minimum

pitch

change.

O

FILTER

CONTOUR

ATTACK

&

DECAY

TIME

FILTER

LADDER

BALANCE

ALE

e

Set

the

following

controls:

TRANSPOSE

OSC

1

LEVEL

OSC2

LEVEL

CUTOFF

EMPHASIS

CONTOUR

AMT

LOUDNESS

SUSTAIN

ATTACK-

DECAY-RELEASE

VOLUME

0

max

Strike

low

C

repeatedly

and

with

scope

connec

ted

to

audio

output

jack

J4.

adjust

LADDER

BAL

trim

R167

for

pulse

of

<50mV.

Set

the

following

controls:

I'

II

ATTACK

gg

DECAY

0

SUSTAIN

0

"

RELEASE

0

ar

Connect

scope

to

7

of

U43B

(2V/DIV

DC).

Depress

any

key

and

adjust

RANGE

trim

R201

for

de

attack

time

of

8

seconds.

cri

FILTER

CONTOUR

BALANCE

mi

Set

the

following

controls:

CONTOUR

AMT

gg

E

*

ATTACK

0

FILTER

LEVEL

BALANCE

Set

the

control

panel

the

same

as

for

Filter

Ladder

Balance

except

set

EMPHASIS

to

99

and

LOUDNESS

SUSTAIN

to

99.

Hold

down

low

C

key.

Measure

voltage

on

3

of

U40A

and

adjust

LEVEL

BAL

trim

R168

to

obtain

the

same

reading

on

1

of

U40A.

Short

9

of

U26

to

ground.

Adjust

CONTOUR

BAL

trim

R205

so

that

the

voltage

on

6

of

U45

is

del

0.000V

*/-

lOmV

with

respect

to

ground.

ten

LOUDNESS

CONTOUR

ATTACK

&

DECAY

TIME

OS(

Set

up

the

same

as

for

Filter

Contour

except

connect

scope

to

1

of

U43A

and

adjust

RANGE

anc

trim

R179.

-

,

INCREMENTAL

CONTROL

CHECK.

BOARD

3

MODULATION

OSC

RATE

Connect

DVM

to

7

of

U13B

and

scope

to

7

ot

U48B.

Turn

MOD

RATE

control

to

obtain

5.2V

reading.

Adjust

RANGE

trim

R223

for

7Hz

(142.6

msec)

+/-

0.5Hz.

DUTY

CYCLE

Attach

a

dual

trace

scope

at

U19

6

(«1)

and

U19

4

(p2).

Rotate

incremental

control

and

note

pulse

duty

cycle

should

be

nominal

50%

*/-

25%.

Check

clockwise

and

counterclockwise

rotation.

GLIDE

TIME

Set

GLIDE

to

99.

Adjust

RANGE

trim

R19

to

yield

glide

time

from

low

C

to

high

C

and

vice

versa

between

3

to

5

seconds.

PHASE

RELATIONSHIPS

Using

same

setup

as

above,

check

phase

of

the

positive

edge

of

pi

in

comparison

to

p2

at

approxi¬

mately

250

RPM

(1kHz

output

frequency).

Positive

edge

of

pi

should

be

at

50%

+/-

10%

of

p2

pulse

width.

Since

adjustment

of

phase

requires

a

change

in

gap

between

VQ1

and

VQ2

OPTO

interruptors,

malfunctioning

unit

should

be

replaced

with

a

factory

adjusted

assembly.

CHIP

TEMPERATURE

ADJUSTMENT.

BOARD

2

NOTE

Oscillator

chip

temperature

is

factory

set

and

should

not

need

further

adjustment.

Do

not

adjust

unless

the

oscillator

1C

or

components

in

the

temperature

compen¬

sation

circuit

are

changed

or

proper

tuning

can

not

be

accomplished.

REPLACEMENT

PARTS

LIST

OSC

1

CHIP

TEMPERATURE

ADJUSTMENT

wsilxxxmi

Turn

TEMP

trim

R131

fully

counterclockwise

(wiper

at

-0.6V)

and

leave

in

this

position

for

about

10

minutes

to

allow

chip

to

cool

to

room

temperature.

iiwkx(

xxi

ixi

l/XW.

IX.

MMX

Mm

IXXXI

IXt

)

BMOXXXX03I

a)

Measure

emitter

voltage

of

Q15

(pin

3

of

U34)

with

respect

to

ground

(use

1K

in

series

with

probe)

and

record

reading

(Vq).

b)

Estimate

room

temperature

in

degrees

C

(T

R

).

c)

Subtract

room

temperature

from

55°C

to

determine

temperature

rise

needed

to

reach

55°C.

d)

Multiply

result

by

2mV.

(Transistor

VBE

de¬

creases

by

2mV/°C.)

e)

Add

this

product

to

cold

reading

(Vg)

measured

above

to

determine

hot

reading

(V|_|).

Example:

T

R

=

22°C

(72«F):

V

c

-

-616mV;

V

H

"

V

c

+

2

(55

-

T

r

)

-616

+

(2

x

33)

-

-550mV

-

VH

f)

A

djust

TEMP

trim

R131

to

obtain

reading

determined

above

at

emitter

of

Q15

(U34).

Chip

temperature

now

set

at

55°C.

91004739?

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TOUR

J45

is

OSC

2

CHIP

TEMPERATURE

ADJUSTMENT

Set

Up

the

control

panel

the

same

as

for

Osc

1

and

follow

the

same

procedure

except

TEMP

trim

R83

is

adjusted

to

set

voltage

at

emitter

Q8

(pin

3

of

U26).

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NOTES

LIMLESS

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SPECIFIED

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ALL

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IR

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ARE

IR

RED

(-»)

ALL

OlOOES

ARE

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^

ARE

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^

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CONTOUR

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SOURCE

DRUM

INTERFACE

UPDATE

BULLETIN

*1741

DIGITAL

BOARD

MODIFICATIONS

DELETE

ADD

PART

NUMBER

COMMENTS

R2

470

OHM

R2

IK

OHM

852-317102-001

Update

schematic

Cl

.1

uf

Cl

.01

uf

947-045183-103

Update

schematic

Jumper

at

the

C2

location.

Step

1

-

mount

and

solder

C2,

a

2.2

uf/25V

capacitor

with

negative

side

towards

P37-3.

945-040209-014

Update

schematic

by

showing

R89

from

ground

to

the

negative

side

of

C2

.

Step

2

-

Mount

a

100K,

R89

from

right

side

of

R2

to

negative

side

of

C2.

852-312104-001

R3

22K

Deletion

only

Not

applicable

Update

schematic.

R63

100

Ohm

R63

10K

852-312103-001

Update

schematic

Cl

5

.Oluf

CIS

.luf

946-041978-J

04

Update

schematic

R65

22K

R65

Add

100K

from

top

of

old

R65

location

to

the

bottom

of

CR16

location

(CR16

location

is

not

used).

852-312104-001

Update

schematic

by

showing

R65

from

•'

■

5V

to

U30

5.

R68

47K

Ohm

R68

100K

Ohm

852

-

312104-001

Update

schematic

R67

750K

Ohm

R67

100K

Ohm

852-312104-001

Update

schematic

R66

47K

Ohm

R66

100K

Ohm

852-312104-001

Update

schematic

R69

4.7m

Ohm

R69

2M

Ohm

852-312205-001

Update

schematic

C16

220pf

Cl6

470pf

947-045008-471

Update

schematic

Not

applicable

Insulated

white

wire

jumper

from

the

top

of

R66

to

bottom

of

the

old

R65

location.

987-040751-999

Update

schematic

by

shorting

R64

to

6

of

U30.

Not

applicable

CR20

and

CR21-

Add

two

1N4748A

diodes

at

P37

Pins

1

and

2.

919-041255-002

Solder

two

22

volt

1

watt

5%

zener

diodes

to

the

traces

coming

from

Pins

1

and

2

of

P37

and

join

cathodes

together.

EPROM

U23

Old

version

EPROM

U23

Version

3.2

991-045307-910

Return

old

EPROM

version

to

Moog

for

recycling.

Be

sure

to

return

it

in

black

velostat

foam

provided.

K1

.5

amp

closure

rating

K1

1

amp

closure

rating

921-045141-002

Replace

old

relay

with

one

of

larger

current

rating.

www.odschool-sound.com

DIGITAL

BOARD

WIRING

S71

(7

Connector)

Digital

Board

1

(brown)

On

trace

running

from

U12

14

to

Ull

14.

2

(yellow)

Top

side

of

C8

the

.Oluf

3

(white)

On

11

of

U13

4

(blue)

On

trace

running

from

U12

4

to

Ull

4

6

(orange)

On

trace

running

from

U12

6

to

Ull

6

7

(green)

Bottom

of

C8

the

.Oluf

TRIGGER-IN

JACK

BOARD

ASSEMBLY

DESIGNATOR

PART

NUMBER

DESCRIPTION

Not

applicable

980-046071-001

Printed

circuit

board

P71

910-040299-007

Header

CIS

7

0.1

ctrs.

Not

applicable

906-045188-016

16

IC

socket

J

2

910-045552-003

Jack

1/4"

Phone

(RK113B)

U1

991-043521-001

IC4502B

CMOS

Hex

Buffer

Cl,

C2,

C4

947-045183-103

Capacitor

.01

MFD

Ceramic

C3

947-045008-471

Capacitor

470

PFD

Ceramic

NEW

JACKS

S-trig

out

(hot)

White/yellow

wire

shorten

to

9"

from

S37

6

S-trig

in

(hot)

White/violet

wire

shorten

to

9"

from

S37

7

S-trig

in

(gnd)

Green

wire

from

S15

7

S-trig

out

(gnd)

Bare

wire

1.5"

long

to

S-trig

In

(gnd

)

To

tape

(hot)

Black

wire

shorten

to

8"

from

S37

3

To

tape

(gnd)

Shield

wire

shorten

to

8"

from

S37

4

From

tape

(hot)

White/blue

wire

shorten

to

8"

from

S37

5

From

tape

(gnd)

Green

wire

2"

long

to

tape

(gnd)

Remote

(plastic

thread)

White/black/red

wire

shorten

to

8"

from

S37

(hot)

1;

add

4.7

ohm

resistor,

part

number

852-512047-001

in

series

with

this

wire

and

cover

with

heat

shrink

tubing.

Remote

(plastic

thread)

White/black/orange

wire

shorten

to

8"

from

S37

(gnd)

7.

Tie

wrap

where

necessary

SYNTHESIZER

BOARD

MODIFICATIONS

DELETE

R225

IK

Ohm

1%

R224

1MEG

PART

NUMBER

COMMENTS

R225

909

Ohm

1%

Deletion

only

853-429090-031

Adjust

R223

to

250

Hz

maximum

and

update

schematic

and

test

procedures

accordingly

"As

required'

Delete

this

resistor

only

if

unable

to

adjust

R223

to

the

250Hz

requirement

above.

Moog THE SOURCE Operating and installation instructions

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