Roland Juno-106 Operating and maintenance manual

JUL.

31,

1984

JUNO-106

SPECIFICATIONS

KEYBOARD

61

keys,

5

octaves,

C

scale

Dco

TUNE

+50

cents

LFO

MOD.

+400

cents

BENDER

+1200

cents

VCF

CUTOFF

FREQ.

5Hz

to

50kHz

RESONANCE

0

to

self

oscillation

ENV

MOD.

+14

octaves

LFO

MOD.

+3.5

octaves

BENDER

+3,5

octaves

KEY

FOLLOW

+3/—2

octaves

i=Roland

Side

panel

(left)

(21125190)

Bracket

(22125519)

LED

Display

window

(22245511)

LED

LB-602VA2-1

(15029175)

Bender

panel

(22215722)

SN

435500-up

(22215722A)

PORTAMENTO

ON/OFF

Switch

mounting

hole

----

SQUARE

(Compatible,

see

Parts

Notes)

Bender

ass’y

PB-9

(23275751)

JUNO-106

SERVICE

NOTES

ENV

ATTACK

TIME

DECAY

TIME

SUSTAIN

LEVEL

RELEASE

TIME

LFO

RATE

DELAY

TIME

AUDIO

OUTPUT

DIMENSIONS

WEIGHT

First

Edition

1.5ms

to

3s

1.5ms

to

12s

0

to

100%

1.5ms

to

12s

0.1Hz

to

30Hz

0

to

3s

L:

—30dBm;

M:

—15dBm;

H:

OdBm

992(W)x320(D)x120(H)mm

39-1/16

(W)x12-5/8(D)x

4-11/16(H)

in.

10kg/22

Ib.

POWER

CONSUMPTION

25W

(20W--100V)

Side

panel

(right)

(21125189)

Bracket

(22125519)

Top

panel

(22215408)

Keyboard

SK-361GR

(76139200)

Printed

in

Japan

B-3

1

CPU

board

(76139140)

Power

board

100/117V

(76139121)

220/240V

(76139124)

Panel

board

(76139320)

Jack

board

(76139350)

MIDI

board

(76139380)

Screw

:

Ve

Screw

M3x12

A

:

M3x12

Fe

Br

2

pcs,

;

S

Fe

Br

2

pcs.

Bender

board

{not

shown)

(76139410)

Fuse

board

100/117V

(76139111)

Blind

(22235320)

220/240V

(76139114)

Module

board

(76139170)

Power

transformer

(22455371U0)

Slide

switch

400/117/220/240V

SSP323-12N

(13159334)

Power

switch

WK2A44

3A

(13149108)

or

1801-0121

(14149102)

Jack

(stereo)

HLJO520-01-010

(13449126)

AC

inlet

PA126

(13429710)

117/220V

PA125

(13429709)

240V

DIN

socket

(triple)

MIDI

3-NS

(13429168)

Jacks

(mono)

HLJ0520-01-110

(13449125)

Rubber

foot

G-5

(15mm

or

0,6

in.)

or

G-7

(40mm

or

0.4

in.)

(12359104)

(12359105)

Four

feet

should

be

of

the

size

to

rest

the

unit

level.

Cabinet

(21135130)

JUL.

31,

1984

BLOCK

DIAGRAM

q

z

3

<4

5

6

?

Pa

2

iD

4

1

4

15

#6

#17

1G

I

JACK

BOARD

MIDI

BOARD

I

012,13

i]

u

|

LOAD

1

os

MIDI

IN

MIDI

OUT

MIDI

THRU

:

TAPE

INTERFACE

i

°

PHONES

1

oe

FILTER

i

Ic12

shes

i

0

|

:

;

I

OUTPUT

,

|

PEDAL

1

HOLD

1

MIDI

I

‘

FUNCTION

a

t

een

1

J

b

i

ee

HPF

,

z

ss es

r

SHIFT

|

eg

0°

g

:

SIG

IC3,4

i

I

OFF

1 i

ri

t

I

A

PB

CPU

(MASTER)

a

LED

MATRIX

SWITCH

MATRIX

BANK

NO.

1~8

BANK

NO

PATCH

NO.

1~8

KEY

TRANSPOSE

KEY

TRANSPOSE

GROUP

AS

a

Ve

CHORUS

1,

1L,OFF

CHORUS

1,

SAVE,

LOAD,

VERIEY

SAVE,

LOAD,

VERIFY

Sa:

ene

ran

8

lb

WRITE,

MANUAL,

MIDI

CH

HPF

FREQ

0-3

PUN

LEO-MAN

VCF

POLARITY

VCA

ENV.~GATE

Sen

ef

ec

te

et

nd

meal

weet

en

ea

Yee

eee

a,

ee

a

A

ee

a

ee

CPU

BOARD

IC10,13

1¢3

SEE

PARTS

CHANGE

NOTES

LFO

RATE

DELAY

PW

DCO

LFO

NOISE

SUB

OSC.

VCF

FREQ.

RESONANCE

VCF

ENV.

VCF

LFO

5

KYBD

VCA

LEVEL

PANEL

BOARD

ee

eee

ee

eee

ee

|

19

20

ee

21

22

23

24

25

26

VOLUME

CHORUS

25

FO

L

(cHORUS)

IC1,2

a

etait

eee

ee

|

ROM

IC37

Nosase

ted

coceps

TUNE

I¢33,34

IC17,18

I¢22

1

§/H

28

29

NOISE

GEN.

Icl4

el

eee

Eee

ne

ee

eee

ee

en

ee

JUNO-106

36

31

32

33

34

39

36

37

BENDER

BOARD

ins”

=

a

io

LPO

TRIG)

«

BENDER

lan

i

:

I

ome

em

mt

ee

|

es

ee

|

BENDER

CV)

BENDER

POL,

LFO

TRIG,

-

PORTAMENTO

BENDER

DCO

BENDER

VCF

LFO

SENS

PORTAMENTO

on/orr

O

a

ae

a

ee

a

ee

|

Oe

ee

he

Be

he

en

ee

Re

he

en ee

he

ee

Ee

he

a

bee

|

MASTER

osc.

1635,38

MODULE

BOARD

WAVEFORM

IC4,8512

HPF

A,B

CHORUS

Hr

Dit

VCA

LEVEL

i

mw

i

ni

"

1

i

1

"

1

i

I

U

1

I

|

1

|

NOISE

:

r

MODULE

BOARD

Slave

CPU

uPD7810/7811

DESIGNATION

AN

(ANALOG

INPUT)

>

=z

(=)

as]

>

MOOR

WN

HH

OFF

OT

ERWH

RH

TIN

OOPRWH

=

2

3

4

5

6

7

0

9g

iw)

NO

OP

WH

|

ODOR

WR

FUNCTION

TUNE

PORTAMENTO

LFO

TRIGGER

SWITCH

LFO

SENSE

(DEPTH)

BENDER

VCF

SENSE

BENDER

VCO

SENSE

BENDER

POLARITY

BENDER

CV

S/H

DEMULTIPLEXER

CHANNEL

_|sevect

NOT

USED

S/H

DEMULTIPLE

XER

CHIP

SELECT

NOT

USED

D/A

CONVERTER

DATA

OUT

(UPPER

6

BITS)

|

NOT

USED

NOT

USED

SERIAL

DATA

RECEIVE

LINE

(FROM

CPU

BOARD)

D/A

CONVERTER

DATA

OUT

(LOWER

6

BITS)

ADDRESS

DATA

OUT

LSB

8

BITS

ADDRESS

MSB6

BITS

7

RANGE

SELECT

‘|

12MHz

CLOCK

INPUT

RESET

PULSE

INPUT

ROM

READ

TIMING

PULSE

8253

LATCH

WRITE

TIMING

PULSE

ADDRESS

LATCH

TIMING

PULSE

----

1:

EXTERNAL

ROM,

----0:

INTERNAL

ROM

-++-0:

EXTERNAL

ROM,

---+

dT:

INTERNAL

ROM

JUNO-106

ieee

tient

en

emanated

fT

Tt

ree

JUL.

31,

1984

IC

4,8,12

HPF

MC55134

CHORUS

JACK

BOARD

OSC,

DCO

OSC

The

oscillator

consists

of

a

master

oscillator

(8MHz)

and

a

divider

IC35.

The

{C35

divides

8MHz

by

two,

four

or

eight

according

to

a

position

of

RANGE

(4',

8’,

16’)

on

the

panel

and

feeds

it

to

DCOs

IC33

and

1C34

which

are

16-bit

Programmable

Interval

Timers.

DCO

Each

of

three

counters

in

one

Timer

divides

OSC

frequency

by

a

number

de-

fined

by

a

divide

data

represented

on

the

data

bus

of

the

slave

CPU

IC29.

The

divide

data

is

the

sum

of

a

key

number

and

the

outputs

from

LFO,

Bender,

Portamento

and

Tune

for

a

particular

note.

The

resultant

at

the

output

of

each

counter

will

be

a

rectangular

of

audio

frequency.

D/A

CONVERTER

In

controlling

voices

the

slave

CPU

does

not

output

each

parameter

indepen-

dently,

rather,

it

integrates

some

of

parameters

that

are

needed

for

a

parti-

cular

destination

(DCO,

VCF

or

VCA)

and

represents

them

as

a

12-bit

data

(upper

6

bits

at

PBO—PB5

and

lower

6

bits

at

PC2—-PC7).

The

data

is

con-

verted

into

an

analog

voltage

which

is

conditioned

and

routed

to

the

destina-

tion

module

from

the

demultiplexer

(I1C23,

24

or

26)

as

shown

below.

D/A

&

S/H

TIMING

CHART

a

D/A

OUT

To

observe

D/A

Output,

IC28b

trigger

scope

on

TP-6

(§C40

9).

082

(TP4)

Buffer

a

5

ov

Pp

16:30,31,22

TP:

ri

405033

Rée

network

IC27a

'y

TEIN

5

n|

0

VCF

CV

IC27b

78?

VCA

CV

RES.CV

——»

IC26

NOISE

LEVEL

4051

INH

{0

to

+10V)

a

>

Lod

—

per

2

(eo)

bea

Note

that

the

select

code

and

INH

for

1026

are

level

shifted

at

IC25

output.

This

is

because

that

[C26

operates

from

+

15V.

RESONANCE

VCA

LEVEL

eS

0CO

CV

SUB

LEVEL

—*»

|C24

{0

to

-10V)

4051

INH

|

IC28a

>

—»

iC23

VCA

LEVEL

4051

INH

| |

|

(+4

to

-6v)

PWM

CV

SUB

OSC

LEVEL

me

INT

MI!

tl

oleo

TETANY

NO

[OO

bet

ct

lin

jin]

©

Jeo

[os

pa

3/8

a

>

B

B13

|S

ra

9

Sepyolnftpultpupati

upc]

wf

ae

ie

(3)

GIYVIOLOPOJSOLOLO;/OLOFL

OF

alo

a

EIS|S|S{S|S{S{S]S]S]S]

&jVis

JUL.

31,

1984

WAVE

GENERATOR

1/2MC5534A

(C4,

8,

12)

MC5534

(IC

4,

8

and

12)

is,

with

a

given

rectangular

at

CLK

IN,

capable

of

generating

three

different

waveforms;

divided

by

two

rectangular,

sawtooth

and

variable-width

rectangular

(Pulse

Width

Modulated).

There

are

three

versions

in

MC5534

series;

of

these

MC55344A

is

the

latest

version

containing

complete

two

identical

circuits.

See

Parts

Change

Notes

in

the

Parts

List

section

for

detail.

SUB

OSCILLATOR

This

is

self-explaining

from

the

figure.

The

output

amplitude

being

variable

to

a

change

of

collector

supply

voltage

(SUB

LEVEL).

SAWTOOTH

For

sawtooth

and

PWM

waveforms,

DCO

CV

is

applied

from

the

slave

CPU

in

addition

to

DCO

output.

The

DCO

CV

will

keep

the

sawtooth

and

pulse

amplitude

nearly

constant

(approx.

12Vp-p)

over

the

frequency

range

(detailed

Jater).

Therefore,

DCO

CV

includes

LFO,

BENDER,

PORTAMENTRO

and

TUNE

data

as

well

as

key

value,

but

it

does

not

contain

RANGE

data;

the

DCO

CV

sees

RANGE

at

the

output

of

4052

(1C2,

6

or

10)

which

selects

among

R85,

86

and

87

in

accordance

with

RANGE

code

(PF6

and

7

of

the

slave

CPU).

The

DCO

CV

charges

C54

through

R85

(if

16’)

and

discharges

through

transistor

E

on

the

positive

going

edges

of

DCO.

If

the

RC

time

constant

(C54

and

R85,

86

or

87)

remains

unchanged,

sawtooth

amplitude

becomes

low

at

4’,

The

same

principle

applies

to

key

range

over

the

keyboard;

the

output

amplitude

de-

creases

as

the

note

runs

high.

Therefore,

DCO

CV

is

made

to

become

higher

in

proportion

to

key

number.

PULSE

MODULATED

WAVE

At

ICB

input,

sawtooth

wave

is

compared

with

PWM

CV

that

determines

the

pulse

duratation

of

ICB

output;

duty

ratio

is

50%

at

+6V

PWM

CV

and

95%

at

+0.6V.

With

PWM

OFF,

PWM

CV

is

—0.8V;

this

can

swing

and

keep

ICB

output

to

High,

disabling

the

rectangular.

VCF,

VCA

A1QH80017A

is

a

one-chip

VCF

and

VCA.

Both

VCF

and

VCA

are

indivi-

dually

controlled

by

the

several

parameters

integrated

into

one

voltage:

VCF

CV

contains

CUT

OFF

(VCF)

frequency,

ENV,

LFO,

Key

follow

and

Bender;

VCA

CV

includes

ENV

and

GATE.

JUNO-106

IC

DATA

uPD7810G/uPD7811G

x10

Ks)

PET-O/ABIS-6

1s

X20

rco/Tsl

O

PCL/RDO

SERIAL

1/0

pc2/STKO

wuRT

o

PROGHAM

MEMORY:

UR

RYTE,

DATA

MEMOIY:

(yPLT811)

1986

WYTE:

CONTROL

PORT

C

PC3

/INT?2

/TIO

pCa

/TUO

PCS-Cl

O

PCS/CO0

©

VCR.

COFO

ANT

0

AD

Vane

©

. :

INSTT.

Ava

O

See:

DECODER

AVay

O

Configuration

‘

rE

SYSTEM

Block

Diagram

“ONTO,

CUNTROL

0

O

RD

WK

ALL

MODEL

MODEO

RESET

A10H800170,

A1QH80017A

TMM2764D

VCF

VCA

64k-Bit

EPROM

ae

agape

eee

eer

ei

Pe

om

UE

Fae

Configuration

VCF

IN

@)

Te

oT

Vpp

GND

Yee

Og

9

02 03 Q,

Os

OUTPUT

x

BUFFERS

a

ILUMN

LSSICOLUMN

GATE

ARRAY

DECODER

Pe

bits

S|

i?)

13}

|

be!

>

EP

Rimadtormee

x

>rp>

p>pr>

>>

dl

@—(4)—@)

oe

+

15y

—

by

JUNO-106

JUL.

31,

1984

eset

aia

ae

ecm

roe

a

A

og

ae

3

A

Se

enna

ke

SECETON

on

ese

sermons

:

Sols

wenn

“oomnnnannensnensenalg

;

ytinev

bsoJt

.

NOTE:

BACKUP

CIRCUITRY/BATTERY

(CPU

BOARD)

’

4

PANEL

BOARD

PS

76139320

—

Mandatory

On

Units

with

Serial

Numbers

Up

To

439000

—

(pcb

22915911)

To

insure

a

longer

battery

life,

short

together

IC4’s

pins

4,

5

and

7

(ora

DG

terminal)

of

the

CPU

board.

In

practice,

first

connect

a

jumper

wire

to

a

digital

GROUND

and

then

to

pins

4

and

5

to

protect

IC4

against

static

charges.

REPLACING

BATTERY

Also

replace

the

battery

that

cannot

supply

more

than

2.8V

under

installed

condition.

In

replacing,

be

sure

to

observe

polarity

of

the

battery.

|

After

mounting,

check

the

voltage;

it

must

be

more

than

3V.

View

from

foil

side

to

CPU

BOARD

Cos

é

ee

Sr

a

fees

oy

es

ee

re

ae,

fe

re

mid

CPU

BOARD

9

eh

76139140

:

;

(peb

22915901)

op

e

Keyboard

ass‘y

SK-361GR

‘ano,

Faace

~

—o

10

JUL.

31,

1984

JUNO-106

PANEL

BOARD

meted

CPU

BOARD

MODE

O:

GROUNDED

MODE

1:

PULLED

UP

when

IC]

is

LPD7811G-101

and

IC2

is

absent,

See

PARTS

CHANGE

NOTES

in

Parts

List.

—

duT—

M54562,4

1

=

o

i=]

mt

220x8

M54522

or

TD62084AP

R

itioe

qa

TC5517

APL

or

MB8416-20L

.,

IMPORTANT

Pins

4

and

5

Must

be

grounded.

2

:

Gia

Bs

as

oO

2

H

os

xt

s

zs

23

f

X2

ae

as

a

ae

a

==

ois

CSA

ee

4

Ta}

GS

teMdz

a

se

EE

OA

‘(0

oO!

fa

ee

ara

REA]

2

Cla

Serer

ee

eee

ned

RPE

hos

(o)

eT,

Se

a

fA

628

EL)

fy

Ly

e)

i

‘ann

Co

fT

casi

@ekxd)

Geka)

|

_e9y

2)

i

UA

ath

Hie

33K

on

a

eee

ae

RonmeeS

Det

oF

I

Da

R22

R23,

rt

cee

PC

Lc

!

PRG

CF

|

os

oo

W

ehieeeeN

amen

ip

veraiap

or

|!!!CO

A

ee

St

tc

eC

LBBB

ES

is

PY?

Oi’

sft

al

our

ap

3-2

Bo

8

OMS

Sl

+5

C4)

|

tld

EAB

=

+

ar

ic1

i

S580

bs

Ww

IC5

a

=

IC7

slextt

wi

+97

0s

6p

Se

oes

eee

sh

Pee

IC.

i

oe

Ged

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at

1112

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ABA

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29

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82)

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x

Verify}

iPS

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y

3

Peay

—iswes

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C

mit

Save

1

BT

owt

PEI

at

fon

fsat

Pa

Iow

IANO!

3)

AN

Welte

oy

i

S|

Inge

fswts

ee

honda

|

by

bat

pean

4

2

ests

Manual_j_

tq

a

ioe

fswis

eR

_jawhs

Dg

iswhd

bef

Pe

lad

KEY

BOARD

403)

ot

tp]

iwely

Tens

5-3

(ACK)

Pa,

Jswia

[DOT

isw27

JID.

Iswio

Pha

swt

PATCH

:

NUMBER

ee

=

)—

11

JUNO-106

JUL.

31,

1984

MODULE

BOARD

Tr

eal

Resistor

R20J

()

Transistor

28C-1815-Y

or

-1815-GR

761

39

1

70

Metal

oxide

film

resistor

1%

100ppm

ZL.)

Transistor

2SA-1015-Y

or

-1015-GR

(pcb

22915902}

fi

Posistor

(560

ohm)

(RZ)

Transistor

2SC-945P

(selected

for

noise

generator)

eee

ame

POD

Ceramic

capacitor

CP

Diode

1SS-133

Mylar

Leal,

Electrolyte

capacitor

A

Trimmer

pot,

HO615C119

5)

472:

4.7K

103:

10K

223:

22K

|

B-TA307

Z

473:

47K

104:

100K

Non-polar

electro

capacitor

#e

ony

ee

Ea

Wigs

ey

oo,

at

oy

0

Bs

wih

a

r

Z

"

&

a

:

eb

%

og

eo

fue

te

4

Be

a

e

Syd

S

é

ae

Le

8

hoe

fag

og

age

PCB

291-982

2291590285

PARTS

DESIGNATION

(in

Dotted

fine,

Schematic

Diagram)

|

CH4

[R47

|

R48

D

CH5|R17/R16|R15|1C2.x

tr5

[R31

|p2|/R32

|R33

Ic5

|ci5|Tr4

|R36

|vR6

[R38

|vRo [R39

|R42

|c20|vR8

|c1glVvR7

|R37

c2

|c3

R30

|c14{c12}c4

IC4

CH6|R13/R14|R12|TC2.¥

Tr2

|R27

|D1|R29

|R28

Ic3

|C9

|Tr1

|R18 |VR1

|R21

|vR4

[R20

|R24

|c7

|vR3

|c5

|vR2

|

R22

12

JUL.

31,

1984

JUNO-106

MODE

0:

GROUNDED

MODE

1:

PULLED

UP 0

‘

when

1029

is

HPD7811G-102

and

IC39

and

IC37

are

absent,

IC35

O

og

ete

ICT3

yA

A

Bato}

Jc

xe

4

8

§

a

aA

ATQHS0O170

ROR

ae

“16

fh

a

A

Ver

Reso

|

VGF

a

WA

VGA

3

we)

CONT

309Kue

See

PARTS

CHANGE

NOTES

jn

Parts

List.

ion

7

.

—G@—

DP

‘\

:

10Kx6

Fj

,

ONT

,

@:

NDER

Cop)

R146

\,

1

CSA

oP

7

SICEREGI

uel

oso

at

ot

TP8&

‘

LE,

f

retuli

2

1

Yc

BENDER

wolf)

\

salad

A

cst,

O

THB

|

nok!

1

Ms

R3

apncn

sense)

|

i

Pa

N

eile

HVR295)

(3

Isai

4

aver

sensiaigy

ve

Rios

es

vR2

NE

CP

7120

:

iS

LEO

sensi)

[|

,

;

Lif

Ssk

eK

TS

a)

+

ten

WR

ro

win

gy

tl

—4

TE

——

»

pig

Y

4

82k

mmm

ae

—

eels

le

ecfemolen|

Be

|

re

Se

Tee!

SO

coe

ee

zi

rH

10k

rr

ena

“OK

1

gee

Re

=

ame

oe

Tost

pois

ea

7

is

a

4

ae

fc

4

d

IG.0

'

>

—

u

‘

i

|il|

#38

EEE

»

vas

ae?

©

BENDER

y

tai

|

6)

Bcoram

All

a

all

hg

ICM

“Pas

2

Q

sen

:

Sey

opts

ltd

Oe

Cis

a1)

10

82053

4

C97

Zz

%

B18

11G

I

Dans

celine

pee

{\

RAG

|

7

ro

Ri24 R125

4.99KmMF

{OKue

IC27,28

082x2

R133

VR33}

|

R10

R13!

ee

T00KD

4.99KMF

10KmF

_

le

|

Q

129

13>

R12

3OKue

R123

Me

oe

(=)

>

fy

C76

—

wi

Z

+

_ICI7b

¢

a

a8)

Eas

‘*

TP7

pipe

aa

7

SB

‘Ss

a)

a

Toh

R127

rug

0

Gi

ask

R10

a

Sy

[2

(C14

om

8

Bas

|

Stoe[_a7k

GD

Bl

7

RS

fan

WK]

Teg

VR32

R15

HEA)

BABE?

VR34—

orgy

Gib

~~

ra,

tok

Brscehe

+

Shey

es

83x

is

10g

Fa

1008

Gee

&-

LB),

|ca0

ave

a

16

M5216L

=

C85

=e

e

aS

v

1

105013

B35

rm,

2

hey

27s

|S

TRIE

a

aan

:

EF)

a5

1C16,19,20

1C21,22

|

a5

EE

gees

x

|

I

072

or

082

X3

=

Nn

ic3t

85

daa

238

Bae:

3

opdx2

122

2

|

a

ICt7a

“3

Bye

MODULE

BOARD

a

i

or

Cp

tee

--

8

eet

13

-10

JUL.

31,

1984

JUNO-106

4

2

“

ob

:

;

ey

wPCI252H2

ry

R29

'

CH

a7Kx4

RN

RTO

ci4

0047

R28

ceo

47K

100K

IN

4}

OSEAN

@

ny

wk

RIG

1

WW

2602878

4]

4

35

pp

>

|

Otpe

a

2

a

|

@)

©)

150K]

560K

ICc6

VCA

LEVEL.

Res

a

TA7SS586

©)

oO

fe

azk

|

1x

15k

8

i

33K

ae

IC2

CHORUS

2st)

Re)

RAs

(

ie

P

(4)

47K

e

ti

re

!

47K

Ri

33K

2

7

a

RS

(2)

47

12

SS

‘47K

ball

150K

2)

a=

--

2SK30A

062

(K38)

+15V

118

(P

CI

escza7s

-15V

LOAD

SAVE

JA3

PHONES

IC7

MS218L

R62

R58

R59

R63

15K

6.8K

33%

15K

GOK

33K

R6O

REI

On

FUNCTION

SWw2

©

MEMORY

PROTECT

on

fa)

on

—

MIDI

BOARD

—

)

JACK

BOARD

15

JUNO-106

.

JUL.

31,

1984

BENDER

BOARD

FUSE

BOARD

76139410

(pcb

22915899)

76139111

100/117V

=

(pcb

22915981)

76139114

220/240V

(pcb

22915981)

1OKBx2

VOLUME

an

OL-oNnar

BL6SL6ZS

BENDER

BOARD

en

ree

ee

OV

COM.

POWER

SUPPLY

BOAR

100v/117¥,//220¥

240¥

oe

0

D4

an

|

eae

foe

See

ea

!

r

'

=

aa

p

!

Ne

D-O

|

POWER

Rib

(P

i

:

TRANSFORMER

es

5

S)

|

don

-

POWER

SUPPLY

BOARD

245-371

UO

T16A/250¥

=

As

cence

|

1

—76139121

100/117V

|

a

au

+29)

‘(Peb

22915900)

‘|

mf

EXOT

DD)!

os

1

nies

;

Jets

|

76139124

220/240V

zy

sin

ay

a

oO

“(peb

22915900)

never

s[IC1)

%]

[42

Pipes

WK2A44_

or

1

NE

ag)!

cy

1801-0121’

511

SER

IC3

i

se

i!

{

“

rr

Fi,

F2,

F3

220/240V

tla

Jumper

100/117V

2

118

S$

at

3

2

ils

>

Qo

ICQ

Kors

Sil?

T500mA/250v

oo

(D

se

Ay

the

pg

ee

p

1B4B41

fe

i

330

|

f

ay

{

i}

6)

“a

Ou

nr41

TH

ii

5

i

Flue.

10A/250V

G00v/117v

1500mA,/250V

muy

4

1

TA00mA

250v

220

/

2409

RED

es

330

i

Cine

ON

hi

i

ECQ-UIA473MH

Geyesin

d

tat

alg:

yee

my

ECQ-U2AST3MF

@22Cy/“24Cy

ee

gle

VR1

gaee!

{lane

ECQ-

U2Ad73MN

PT

secondary

ratings

ORG-ORG:

9.5Vims

@0,9A

a=

“

C2,..,,.DE7150472MVAt

L1.....,FKOBISOMH15

or

SC“02~15E

RED—

BLK

TaMrms

@0.25A

16

A

er

ce

oe

PANEL

.QGARD~s,

(vo)

Dai

i

a...€

ADJUSTMENT

Adjustment

must

be

performed

in

the

order

listed

below,

POWER

SUPPLY

BOARD

a

ENTERING

TEST

MODE

a

MODULE

BOARD

a

JACK

BOARD

oe

CHECKING

MID!

FUNCTION

CAUTION

Allow

at

least

10

minutes

for

warmup

period;

manda-

tory

upon

VCF

adjustments.

1.

DC

SUPPLY

VOLTAGES

(POWER

SUPPLY

BOARD)

CAUTION

Any

slight

adjustment

on

this

board

must

be

followed

by

a

complete

adjustment

of

the

rest.

Do

not

touch

the

trimmers

inadvertently

before

checking

the

test

points

for

voltage.

Test

instrument:

Digital

voltmeter

with

10mV

resolu-

tion.

1-1,

Adjust

VR1

for

—15V

+

10mV

at

@.

1-2,

Adjust

VR2

for

+5V

+

10mV

at

©@).

1-3.

Verify

+15V

+

0.8V

at

©.

1-4.

Verify

+5V

+

0.5V

at

©).

Analog

Lae

Riz

GND

[o00.,

‘Ocs

3

Is

mr

3|

é

8|

x

.

7

Qryet

oe

te

ae

eo

&

*

|

lz

ce

i

‘

01

cH

of

ay

+

epee):

ai

BR

|

[em]?

3

:

-

a

ZO

Ri

eo

fE

«|

|

9]

[~

Hi

5

BLACK

Ct

ats

Ri

«22g.

[dm

eS

JUNO-106

POWER

BOARD

PEISTIZG

—

(00/407)

VbIS9

124

TEST

PROGRAM

The

following

adjustments

can

be

performed

with

the

aid

of

Test

Program

stored

in

the

CPU

on

the

CPU

Board.

To

enter

the

test

mode,

hold

KEY

TRANSPOSE

down

and

turn

the

JUNO-106

ON;

the

display

window

will

biti

read

LL!

LI

indicating

that

the

unit

is

in

the

test

Mode,

During

the

test

mode,

each

switch

serves

as

fol-

lows:

RANGE

Ey

PEB“291-900

Creefeto)

_t

JUNO-106

FUNCTION

DURING

THE

TEST

MODE

KEY

UNISON:

ASSIGNMENT

All

six

modules

are

assigned

simultaneously

to

a

key

being

pressed.

NON

The

voices

are

assigned

to

the

keys

played

in

the

order

CH1

to

CHG

as

ROTARY:

long

as

the

are

held

down.

One-key

staccato

always

sounds

CH1

only.

The

display

window

indicates

currently

assigned

channel

number,

ROTARY:

The

voices

are

assigned

in

cyclic

manner;

7th

key

steals

the

voice

from

the

Ist

key.

The

display

window

indicates

current

channel

number.

BANK

GROUP

A

HOLD

OFF

GROUP

B

HOLD

ON

TAPE

SAVE

LED

MIDI

FUNCTION

IT

CHECK

LED

VERIFY

LED

|

MIDI

FUNCTION

J]

CHECK

MIDI

CH

hol

Turns

D/A

output

to

OV

Pressing

BANK

buttons

also

evokes

Test

Program

and

sets

the

front

panel

controls

as

below.

PATCH

buttons

have

no

effects

in

the

test

mode.

[ver

[ven

[ew

J

A

|

TEST

H

N

|

FUNCTION

|R/D

s

L}PpiP

F

E/E

LIK}

Ape

O

K

A|E

U

Fiw{WfeE|R

NIN

eLY

E

a

TIL

E

V

B|A|v

N

celalal

UM

8)

-joimim

Vj

pj}O

c

U

oO

(@)

0.

Oo

DISL

S

Y

D

L L

E

A

VCA

forter

[sfofe]

|

[[olo[ofm[+

fo]

o[o|nfofrolm[s[o[o|oo/o|

jz

{susose

[sfole|

|

frolo/o/o

[nls

frolofo[n|olio|A/s|o|o|ro

VCA

GAIN

2

[WeeOAN

[sfofe]

|

[efe/efolm|

fsfolo[wfofialm|s|

ofa

[to]

o/o|

MM

et

5/8)

6

Not

all

TEST

FUNCTIONS

are

involved

in

the

adjustment.

Edit

functions

also

are

active

in

test

mode;

when

an

edit

is

made,

display

window

lights

a

dot.

To

return

to

the

test

mode,

press

the

same

BANK

button

again.

18

JUL,

31,

1984

2.

DCO

CV

OFFSET

(MODULE

BOARD)

Test

instrument:

Voltmeter

(1mV

resolution)

Test

point:

TP3

Key

assignment:

POLY

1

(UNISON

during

test

mode}.

2-1.

Press

MIDI

CH

button;

D/A

converter

turns

its

output

to

OV.

CAUTION

Pressing

any

key

on

the

keyboard

releases

MIDI

CH,

let-

ting

the

D/A

to

develop

voltage

according

to

that

key.

Press

MIDI

CH

again

to

defeat

the

key

voltage.

2-2.

Adjust

VR33

for

OV

reading.

2-3.

Leave

MIDI

CH

ON

for

the

3.

VCABIAS

{MODULE

BOARD)

Test

instrument:

Voltmeter

(1mV

resolution)

Test

point:

TP7

Key

assignment:

POLY

1

(UNISON

during

test

mode).

3-1.

Press

MIDI

CH.

Refer

to

“CAUTION

in

2-1”,

3-2.

Adjust

VR34

for

a

reading

within

+0.25V

to

+0.27V.

4.

VCA

OFFSET

(MODULE

BOARD)

Test

instrument:

Oscilloscope

Test

point.

TP8

(CH1)

to

TP13

(CH6)

BANK:

1

Key

assignment:

POLY

1

(UNISON

during

test

mode)

4-1.

Adjust

the

following

trimmers,

respectively,

for

the

minimum

thumps.

VRNO.

30

25

20

15

10

5

CH

NO.

1

2

3

4

5

6

JUL.

31,

1984

JUNO-106

TPT

TP2

a

MODULE

BOARD

VRNO.

28

23

18

13

8 3

JACK

BOARD

TP?1

1P3

CH

NO.

1

2 3

4

5 6

ee

+

anatog

Ground

Analog

Ground

NOTE:

Procedures

7

and

8

interact.

Repeat

the

steps

in

|/

Ao

2

3,

rete

ne

Pieteaaed

¢

oy

coe

105

:

=

.

ined

Mf

ogc

ee

aii

<x

lee

ie

cea

%

nf)

he

Sree

both

paragraphs

until

satisfactory

result

is

obtaine

al

ics

$6

|

oot

bie

| |

Bat

S

ai

:

%

:

a

5

|

(within

+

10

cents

on

the

tuner).

alt

nee

ANG

Be,

oR

8

BS

ae

Et

te

ead

areas

|

9,

NOISE

LEVEL

z

wos

A)

GF

2f0)

Or

3

|

Or

[kd]

ga

3

i

(MODULE

BOARD)

ea

=

o

Oo

a]

ei

O}s

.

rt)

“

z

=

Pao

6

oe

CY

“PPS:

BOR

ae

S|

ES

are

|

[bf]

48

ay

ok

Agr

|

CAUTION

=

'

Wr

Fae

Bg

ie

2

3

7

fs

74,

~

t

19S

0

3

ABS

Gy

D990

Mugu

a

S190

OUSTEL

C

eS

ee

2

&

ds

Oe

||

|

ww

®)

|

6.

VCA

GAIN

must

have

been

finished

before

this

ad-

h

Sen

ar

EN

Gaye

Nan

a

3

x

y

Ne

ST

ag

|

@

|

ata?

2

J

roy

32

Ol

melee

als

vr

Ree

\er

hr

03

|

i

se

Peis

log

Spo

Fl

|

File

justment

is

performed.

As

ge

be

co

a

Jai

ae

gh

82

Hear?

Hy

&

al

HI

meR

gy

@

gol

oy

4

=e

f

F

t\Gl

me

So

r

@0

802080

4

Test

instrument:

Oscilloscope

woe

we

Beet

Eat

“Oe

C

=|

eng

i

=

Test

point:

TP8

Gal

8

Gara

at

ooo

eg

aq)

|

=228

age

3

:

/II\\\

WAY

oe

"2

2

f=

;

A

Key

assignment:

POLY

1

TP19

(CHT)

BANK:

6

TPB

TP13

TPI@(CH2)

Digital

Ground

11.

CHORUS

BIAS

(CH1)

(CHB)

:

2

’

TP14

7

nes

elena

TP15

TP16

TPI7 TPI8

TPI9

TPT]

TP4

TP6

TPS

9-1.

Holding

any

key

on

the

keyboard

down,

adjust

(JACK

BOARD)

(CH2}

(CH5}

TP15(CHS)

Not

provided

on

early

PCBs:

Connect

to

the

hot

VR32

for

4Vp-p

on

the

scope.

ee

hale

TP14(CH6)

terminal

of

trimmers

defined

as

TP14—TP19.

Test

instrument:

Oscilloscope,

Audio

generator

Test

point:

TPi

(CH1),

TP2

(CH2)

VCA

LEVEL:

0

KEY

DESIGNATION

VRNO.

27

22

17 12

7

2

CHORUS:

|

Tw)

CH

NO.

1

2

3

4

5 6

11-1.

Feed

10Vp-p,

1kHz,

sine

wave

into

TP2

of

the

ith

Ik

7.

VCF

FREQUENCY

10.

PWM

MODULE

BOARD.

(MODULE

BOARD)

(MODULE

BOARD)

11-2.

Adjust

VR1

(CH1)

and

VR2

(CH2)

on

the

JACK

c

ch

Ok

ns

8

<7

SAUTION

a

.

Se

eae

i

This

adjustment

must

be

performed

after

10-minute

2.

DCO

CV

OFFSET

must

have

been

finished.

harvental

ie

aR

eae

es

442Hz

warmup

has

passed,

(o]

.

MOGULECOMEE)

Test

instrument:

Frequency

counter

or

Tuner

Test

instrument:

Oscilloscope

Test

point:

TPS

(CH1)

to

TP13

(CH6),

or

Test

point:

TP8

(CH1)

to

TP13

(CH6)

CAUTION

OUTPUT

Key

assignment:

POLY

1

Key

assignment:

POLY

1

(UNISON

during

test

BANK:

5

This

adjustment

must

be

done

after

10

minutes

has

pass-

ed

and

after

3.

VCA

BIAS

has

been

finished.

mode)

or

POLY

1

+

POLY

2

(ROTARY

during

test

mode)

--

10-1..While

holding

C4

key

down,

adjust

VR31

for

a

Properly

adjusted

Test

instrument:

Oscilloscope

when

checking

at

OUTPUT

50%

duty

cycle.

Test

point:

TP19

(CH1)

to

TP14

(CH6)

BANK:

3

ee

12,

LOAD

OFFSET

Key

assignment:

POLY

1

{UNISON

during

test

(JACK

BOARD)

mode).

7-1.

While

holding

C4

key,

adjust

the

trimmers

listed

Test

instrument:

|

Voltmeter

with

1mV

resolution

BANK:

3

below,

respectively,

for

248Hz

(B3

pitch).

Tolerance:

48-52%

Test

point:

TPS

5-1,

While

holding

down

C4

key,

adjust

the

trimmers

listed

below,

respectively,

for

4.8Vp-p

sine

wave.

VRNO.

26

21

16

11

6

1

VRNO.

29

24

19

14

9

4

CH

NO,

1

2

3

4

5

6

8.

VCF

WIDTH

(MODULE

BOARD)

10-2.

Confirm

that

the

duty

cycles

of

the

rest

channels

(TPQ

~

TP13)

are

within

48

—

52%.

12-1.

Adjust

VR3

for

OmV

reading.

13.

MIDI

FUNCTION

SWITCH

CHECK

13-1.

Verify

the

following

with

FUNCTION

set

at

res-

CH

NO.

1

2

3 4

5

6

;

ne

CAUTION

pective

position.

6.

VCA

GAIN

;

°

Perform

this

adjustment

after

at

least

10-minute

warm-

I:

only

VERIFY

LED

lights

(MODULE

BOARD)

up

10-3.

Holding

C4

key

down,

confirm

that

duty

cycle

of

.

:

ae

Tl:

only

SAVE

LED

lights

CAUTION

;

all

channels

are

within

93

—

97%

with

PWM

set

at

10.

I:

LEDs

liaht

fore.

Test

instrument:

Frequency

counter

or

Tuner

>

ho

Siig

This

adjustment

must

follow

5.

VCF

RESONANCE.

Test

point:

TP8

(CHI)

to

TP13

(CH6),

or

NOTE:

If,

incidentally,

the

PWM

knob

has

been

set

at

OUTPUT

(tuner

method)

Test

instrument:

Oscilloscope

Key

assignment:

POLY

1

or

POLY

1

+

POLY

2

Test

point:

TP8

(CH1)

to

TP13

(CH6)

(OUTPUT)

Key

assignment:

POLY

1

(UNISON

during

test

BANK:

3

mode}

BANK:

3

6-1.

While

holding

down

C4

key,

adjust

the

following

trimmers,

respectively,

for

6Vp-p

sinewave.

8-1.

Holding

C6

key

down,

adjust

each

trimmer

listed

below

respectively

for

992Hz

(equal

to

BS

note).

10,

lower

it

then

raise

to

10

again.

19

Roland JUNO-106 Operating and maintenance manual

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