Roland SVC-350 Bedienungs- und Wartungshandbuch

SVC-350

SERVICE

NOTES

SPECIFICATIONS

ROLAND

VOCODER

Modal

SVC-360

INPUTS

MIC

INPUT:

1/4

inch

STANDARD

snone

Jack

EIA-RS297

Connector

iciOOonm.

-54dBm

mm.)

INSTRUMENT

INPUT:

1/4

men

STANDARD

Phone

Jack

HOOkonm,

OdB

max.)

QUrTAR

INPUT:

1-4

inch

STANDARD

D*.one

Jack

dOOkonm.

GUITAR

flaw

level.)-lOdBmi75OmV)

INSTRUMENT

LEVEL

SELECTOR

Switch

(OdBm.

-i5dBm,

-30dBm)

Jack

HLJ-OI9-01-030

(O09-046)

Jack

HLJ-O2

46-01-030

(O09-030)

INPUT

LEVEL

INDICATORS:

.ED

DISPLAY

MIC

LEVEL.

Green.

Red/over

INSTRUMENT

LEVEL.

Green

Red'

over

GUITAR

LEVEL.

Green

Red/over

OUTPUTS

For

GUITAR

AMPLIFIER:

1/4

inch

STANDARD

Phone

Jack

(

lOkohia)

MONO

STEREO

OUTPUTS:

1/4

inch

STANDARD

Phone

Jack

Knot

no.44

(016-044)

Pot.

3VH6PA361C14

(026-161)

CONTROLS

MIC

LEVEL

CONTROL

(,-5413111

-14dBm)

POWER

CONSUMPTION:

13W

DIMENSIONS:

482(W)

92(H)

350(0)

WEIGHT:

•

3kg

Knob

no.77

(016-077)

Pot.

3WJEJA320B14

(026-155)

Pot.

EVH8MA361A14

(026-163)

Jack

HLJ-024-01-030

(009-030)

Switch

SSM-02308

(001-196

Knob

no.77

(016-077)

rot.

EVEEQA361314

(O26-158)

Knob

no.48

(016-048)

Pot.

EVHHPS20B14

(029-589)

MACHINE

SCREW

t—->

6-M4X10

BLK

Power

3w.tch

SDG5P001

(01-156)

100V

3DG5P0C1-2

('01-216)

117V

SDG5P5O2

(01-217)

220/240V

Button

no.

(016-009)

Panel

H58

(072H058)

HANDLE

108

RUBBER

FOOT

K-15U11-C3'

CCVER

O65HO6O

MACHINE

SCREW

6-M4X12

BLK

Haxa^a

socket

head

bolt

czim

blk

Recectacle

—(

NC-3PP

I-3M

(010-264)

MIC AMP

Beard

AP-127

(141-127/

CONTROL

Board

Switch

SSM-02308

(001-196)

Jack

HLJ-C264-1-030

(009-OP)

LED

TLR-124

(019-028)

red

TLG-124

(019-029)

green

Jack

HLJ-O261-O1-O3C

(009-037)

Jack

HLJ-O264-O1-C2C

(009-040)

1—Knob

no.44

(016-044)

Pot.

3Wo"EJA320B14

(026-155)

OP-142

(149-142)

FILTER

Board

FL-19

(145-019)

100.

ll'V

FL-19D

(14--C1C)D)

22C

240V

i—

LED

Board

OP-150

(149-15C)

r-Fuse

Board

OP-143

100V

OP-144

117V

OP-145

220/24CV

Power

transformer

C22-028N

100V

022-028C

117V

022-028D

220/240V

Terminal

TT501D-1

(042-032)

Ground

terminal

TT-9-4

(042-041)

Printed

Japan

Dec.

8,1979

HOLD

MIC

HOLD

IC53

ANALYZER

BPF

IC5O.55

FL-19

FILTERS

SYNTHESIZER

FILTERS

OJ7

PEAK

METEC7&R

■LPF

5OHs

Kit

SPF

/CA

BPF

:C2-7

EXPANDER

-CONT

INSTR'

OT4

'red

IC45

PEAK

PETCCBR

(»B0)

AIIIMO

k—J

AUDIO

DELAY

Q3C

LPF

031

TC2K9

8BJ

AU&IO

DELAY

LPF

Oil

038

DIRECT

3IG.

CLOCK

OSC

Q32-O36

CLACK

LPD-I

IC25

LFO'2

IC26.Q44

Q26

LNV-

icHz

IC44

TRIAN6UU*

OSC

ilL

IC39

IC38

VCA

IC37

8f«-3

Circuit

♦

DIRECT

"ON"

fSi/3

i—■

AMP

IC12a

AMP

IC12b

l '

wt.

air

L.rt.M

ATT

L.W.H

(A-»B)

-B.

AMP

LEVCL

ENSEMBLE

ON,

OFF

PHONES

SVC-350

BLOCK

DIAGRAM

MOUII

IIUIM

-Deiail-

uec.

8,1979

CCMPR3USCR

After

ampi—

fled

14-54d3

through

Mic

Head

Amp

or.

Ar-127,

Mic

3ignal

ijoea

i,pin3

5-7)

whoje

gain

reversely

proportional

she

control

current

from

emitter.

The

aic

3i,sr.ai

coming

from

IC2

full-wave

rectified

IC3

(pir.3

5-7),

and

D2,

peak-voltage

detected

IC3

Ipins

1-3;,D*,

jncothed

voltage

IC5

(pir.3

1-3),

ani

7-1

converted

IC4

(.pins

1-3),Q5

•

Connected

acros3

IC4'3

pins

and

7 in

parailed

with feedback

resistors

IC1

3A6CJ.

the

mic

si-gnai

increases,

output

current

increases,that

causes

3A662

conductance

increase,

lowering

the

gain

IC4

(pins

5-7;

retain

either

half

peak

output

from

$oing

above

10V

(2OVpp).

thi3

7oc

oder,

there

are

two

other

compressors

similar

the

Mic

compressor

ir.

configuration:

Guitar

preamp

ohain

and

synthesizer

filler

output

channe-.

SXPAIJDSR

Ihe

output

-voltage

IC5

al30

received

3x?ander3

IC17-20,

322

and

32;.

The

current

from

322

^323)

varies

the

same

direction

the

Compressor,

but

with

thi3

fashion,

3igr.al

flew

rate

through

IC13

(IC2G/

ii-

reciy

proportional

the

control

current;

the

more current

flows,

the

moire

signal

flows

through

IC13.

ANALYZER

FILTSR

Ten

3?Fs

witri

nign

consisting

ICs

(s.

IC<?G

and

IC55;

covers

most

the

audio

spectrum

3peech

signal.

The

3ignal

from

the

compressor

pre-emphasized

through

IC5l?in3

5-7)

and

fed

the

filter

bank

which

slices

the

3pectrum.

Each.

3lice

goes

iiode(e.g.

D37)

where

its

peak

letected,

3moothed

and

fed

the

7CA

the

3tage

filter

-Synthesiser

filter.

This

control

voltage

that

proportional

*.he

jtrer-ght

that

slice.

"/:.rTHE

JIZEli

:2h

Trie

Jyr.th^ji»'.«r

f-itor

jet

oar.'i?-^

filr-jr,

.ier.-

ticai

tnose

the

Analyzer

3ection,iJfed

tne

o.^n-

■ii

•-•oming

througn

either

IllSTRUMENT

joJAR

preaap

and

IlAiuMCIIICS

circuit,

i'he

filter

bank

3lice3

instrument

3ound

jpectrua

into

banas

the

3aoe

way

Analyser

filter

ioea

the

jpeech

3pectrua.

Each

3lice

tr?n

connects

•/oit'dge—

:ontroiied

amp

-7CA.

7CA

During

absence

signal

Analyser

'ilterie.g.IC5O

IC55.-C63),

negative

peaks of

trian^alar

*ve

IC33

kept

positive

-determined

7?.3

•

with

respect

the

11,

disnabling

3witcnir.g

gata

-iC;2.

When

the

voltage

from

ICc3

increases

scae

extent,

exceeds

lower

portion

trianiguiar

wave,au3ing

IC33

turns

"H"

wnich

turn

gates

1C32

When

pc3itive

going

triangular

wave

reaches

above

the

/ctage

11,

tum3

"L"

and

IC32

turns

off.

Ths

signal

flow

rate

througn

IC32

aepend3

the

width

lulse

:*r:a

1C33

and

pulse

width

proportional

-Co;

;;trcl

ventage.

pul3e3ating

rectified

3ignal3

are

smoothedwhile

tr.ey

are

passing

through

the

fixter

-IC39.

TOCCDiiR

I1CLD

IC33

IC63

IC33

-rj

HUH

CCNSCIIA3T

FILTER

This

H?F

allows

only

high-frequency

cccc'-.ent

-n

signal

from

tne

Mic

imp

pass

coaper.sa;

f^r

r.igh-

"requer.cy

range

.r.oapub^e

.:'

reprcciuc-.ior.

t.ie

•

:aer

rhu

'jirrj;;

•:

i.-npoj.jd

QC.Q3

'lnd

Q.X.

*hen

the

KCLD

jacit

circuit

:pen3,

and

5Cm3

later,

the

output

mcrea3*3

-.r;-*

positive-going

turn

on tne

gate

and

jnunt

175

input

the

ground.

the

other

hand,

3ignal

supplied

through

turns

FST

3witch

IC53

(pins

10-12)

on,

turning

1C53

(pins

and

off,

disconnecting

H3O7

from

iiscr.argir.g

path,

increased

discharging

time

constant

can

r.old

previously

charged

C135

for

7-10sec.

7CICS

JHARACTCR

CONTROL

Because

resi3*or3,

-R726,728,

730

connected

wiper

terminals

CHARACTCR

CONTROL

pots,

are

different

value;

the

higher

the

frequency,

the

^arger

the

value:

overall

frequency

response

offer3

de-emphasized

charac

teristics

SOUNU

DETECTOR

During

absence

musical

instrument's

signal,7cccder

3hut3

inadvertent

3ignal3

under

the

coordination

system.

The

sound

detector

the

first

3tage

of the

3y3tem.

IC45

(?in3

~-~},

D51

and D52

make

full-wave

recti

fier,

the

average

output

voltage

peak

of the

3ignal

ielivered

IC21

pir.

then

IC45

(pins

1-3)

provides

adequately

smcctn

output

from

•hen

this

vc.tage

of IC37

exceeas

voltage

goe.s

negative,

cutting

Q29

off,

removing

the

ground

rrea

1C17(IC19J.

Expanders

are

now

ready

function.

IC37

al3o 3ees

Sound

Detector's

output

and

deter

mines

1's

output

pulse

rfidth

which

turn

regulates

H?F

sigriHl

flaw

rare.

While

Synthesizer

filter

7CA

sponds

s^e-izr.

peer

rum,

H?F

.'CA

tne

instrument'

CIRCUIT

DESCRIPTION

—General-

Sound

from

Musical

Instrument

Voice

from

XIC

High

Sound

3yr:as3

Filter

Com

pressor

1st

Filter

Amplitude

Detector

Sound

Detector

2nd

Filter

-*•

VCA

•*

Sxcander

Holi

the

Vocoder,

the

voice

signal

from

Mic

frequency-analysed

through

group

filters

slice

voice

signal

frequency

3pectruna

featuring

huaar.

voice.

Then

the

spectrum

duplicated

another

group

musical

sound

signal

filters

obtain

func

tions

equivalent

human

acuth

and

throat

and

thus

simulate

human

voice

with

musical

sound

signals.

Fundamental

Vocoder

functions

are

discribed

below

according

t.ie

Blocsk

Diagram

shown

above.

Analyzing

(first)

Filter

and

Amplitude

Detectors

Mic

iixput

signal

resolved

group

filters

into

freqen-

band

components

which

are

amplitude-detected

and

supplied

the

VCAs

the

Synthesiser Filter

(second

filter).

Signals

passing

through

second

filters

are.

controlled

volume

VCA

b.y

the

control

signal

coming

from

corresponding

frequency

band of

tne

first

filter.

Synthesiser

,'3e;or.a;

liter

and

"CAs

the

first

filter,

aausicai

3cund

signal

being

supplied

resolvd

into

frequency

spectrum

components.

Sise

musical

3ound

passing

through

the

3ecori

group

filters

proportional

the

f*st

filter

output

amplitude,

the

spectrum

the

second

filter

output

analogous

trit

the

vcice

signal.

ether

words,

:he

second

filter

output

mixture

trie

input

musical

3cund

signal

and

the

firs:

signal

output.

Thus,

uniform

3ound

signa.

spectrum

would

ideal

for

reproduction

human

voice,

but

longer

musi:al

instrument.

3•

Compander

The

compander

combination

compressor

and

excajier.

The

compressor

reduces

input

signals

range

amplitude

and

su:

plies

smaller out-

cut

signals

range

than

inj

signals'

the

first

filter.

the

contrary,

the

expan

der,

for

given

range

amplitude

input

oltages,

produces

larger

amplitude

range

output

voltage.

Thus

restores

the

ordinal

volume

range.

Kigir.

Frequency

Voice

Signjil

Bypass

Filter

\Reiionant

Filter)

3mce

musical

sounds rarely

include

high

frequency

r.oise

components

such

"fricative"

may

V.ioe,

the

second

filter

has

spectrum

respen:

to.

Furthermore,

such

sound,

hardly

relating

musical

intervals,

separated

from

mic

inpu"

signal,

passes

through

this

circuit

and

re-

ccmbined

with

the

second filter

outputs.

Musical

Sound

Signal

Detector

This

circuit

-obstructs

tne

second

filter

output

long

musical

sound

not

supplied

the

Vocoder

and

tells

the

circuits

and

whether

musical

scur.d

signal

being

fed

net.

Thi3

circ

.it

enables

Vocoder

hold

its

output

luring

interruption

mic

signal,e.g.

when

singer

inspires,

-he

function

can

also

used

for

some

special

effect

applications.

During

holding,

this

circuit

retains

spec

trams

and

volume

holding

amplitude

ietectors

output

volt

ages

and

expander

control

voltage.

Tne

compressor

gain

minimised

and

the

vcice

gate

turned

off

1-ceep

vcice

unchanged

ever.

though

,Xic

input

singal

changing.

OP-150

(149-150)

FUSE

BOARD

CONNECTIONS

1OQV

]ECGHJIA473M\

022-028*

0P-143A

(149-143A)

POWER

$W. SD4-SP-00I-I

OOZS

117V

ECQ-UIA

473

022-029

II7V

0P-144A

(149-144A)

POWER

SW.

SD(rSP~Q0/-2

QOI-ZI6

8SO,84OV

&CQ€2A

47JMQ3.

022-02M

POWER

SW.

$D<k-

SP-SQ2

ooi-2\n

OP-145A

(149-145AJ

(Etch

mask

052H185A)

022-0UD

3lee'-

nut

r.o.lr

Jxl2im

(120-01=)

LED

TLR-124

red

(019-028)

Connector

assy

(G53-3S3)

PG3

O52H195

Polycarbonate

collar

AP-127

(141-127)

(Etch

mask

052491)

MIC

LBTfiL

TRIO

3T/H6?A361C14

(026-141)

HLJO19O-O1-03O

(009-046)

2SC945-P

2SA733-P

Electrolytic

Maylar

507

Ceramic

50V K

Resistor

-J-w

3ALANCI1

(026-155)

3VAHHPS20B14

OP-142

(149-142)

View

from

foil

side

(Etch

mask

052492)

T/R22

13<

701'JMI

BWJ-3JA32OB14

(026-155)

•Hill

HARMONICS

BVH-BQA361

314 (026-153)

PL-19D

20/2407

V3RSIGN):

WITH

FUSES

FL-19

(145-019)

(pcb os249O)

SYNTHESIZER

FILTER

ANALYZER

FILTER

5O45-1CA

8dsado

flogs®®

5O45-O6A

ENSEMBLE

(DELAY

CIRCUIT

5C45-CMA

PARTS

LIST

072H058

Panel

H58

front

O65HO6O

Cover

(case)

H60

1O8H003

Handle

111-037

Rubber

foot

K-15

O61HO?2

Chossis

HQ2

016-044

Knob

no.44

MIC

LEVEL.VOLUME

016-077

Knob

no.77

rotary

samall

016-048

Knob

no.48

slider

016-009

Button

no.9

blk

power

switch

t'10-264

Receptacle

NC-3FP

D-3M

009-037

Jack

HLJ-O261-O1-O3O

009-040

Jack

HLJ-O264-O1-O2O

stereo

nm-0?0

Jack

HLJ-O264-O1-O3O

0O9-046

Jack

HLJ-O19O-O1-O3O

headphones

001-156

Switch

S1XJ5F001

power

100V

«'01-r?l6

Switch

SDG5POO1-216

power

117V

001-217 Switch

SDG5P

502 power

22O/24OV

001-195

Switch

SSMO23O8

slide

100/117V

22O/24OV

mic

control

LED

145-019

FL-19

(PCB

052-490)

145-019D FL-19D

with

fuses

141-127

AP-127

(PCB

052-491)

149-142

OP-142

(PCB

052-492)

149-150

0P-150

(PCB

O52H195)

Fuse

PCB

(PCB

O52H185A)

149-143A

OP-143A

100V

149-144A

OF-144A

117V

149-145A

OP-145A

220/240V

FUSE,

FUSE

HOLDER

Fuse

SGA

prim,

100/117V

008-026

008-0

2r^

Fuse

CEE

T500mA

prim.sec.

22O/24OV

012-003

Clip

TF-758

022-028N

Power

transformer

no,28N

100V

022-028C

Power

transformer

no.28C

117V

022-028D

Power

transformer

no.28D

22O/24OV

022-122

Output

transformer

MT-31

headphones

SEMICONDUCTOR

MPC177C

O1T1

bbd

MN3010

U U

(Top

Vi»w)

DUAL

AMP

;iPC4558C

TL082CP

LF353N

TOP

VIEW

OUTPUT

(T)C

OUTPUT

-INPUT

+INPUT

SVC-3

SVC-350

CIRCUIT

DIAGRAM

-/.I,

K»9B»L8

KOSVUTW

WttSS

Mill

noise

killer

Circled numbers

except

for

those

connecting

terminals

are

TB3T

"...

Identical

letters

the

circles

are

lnterconneoted

the PCB.

uec.o,

triangulnr

wave

"c*

sou.

cutofI

ICD

SVC-350

Dec.

8,1979

28N

100V

28C

117V

28D

220/240V

-^l

headphones

-0

POTENTIOMETER

026-163

EVH8MA361A14

lOkA

solder

terminal

026-161

EVH6PA361C14

TOkC

026-l^b

EWJEJA32OB14

10kB

026-158

EVHEQA361B14

lOkB

361-K2O

029-589

EVAHHPS20B14

lOkB

slider

030-461

SR19R

2.2k

trimmer

030-47-1

SRiyR

100k

trimmer

2SA733(P)

2SC945(P)

2SD234K))

2SB234(O)

amp

ator

(Top

Vie-w)

—0

Vim

Irimintl

CAPACITOR

032-191

ECEA16N1O

lOmfd

16V

non-polar

ECEA5ON1

lmfd SOV

mm-polar

ECQ31151JZ

15Opf

polystyrene

2SK30AIY)

2SK3OA(GR)

1OQ.117V

KCQE2A473MCS

0.(M7mT<i

polypropylene

032-228

CB15B1V4H7

4.7mfd

?SV

tantalum

MISCELLANEOUS

064-265

Holder

no.265

PCE

retainer

right

angle

3y6mm

long

064-200

PCB

hulder(fastener/spacer)

DLCBS-6N

120-015

Sleeve

nut

no.35

3x12mm

(spacer

stand-off)

073-037

Polycarbonate

collar

"5x6x18mm

LED

042-032

Terminal

TTS01D-1

mains

042-041

Terminal

TT-9-4

ground

048-001

Heat

sink

no.l

123-013

Hexagon

socket

head

bolt

4x8mm

065-268

Cover

no.268

dust

cover,slider

065-261

Cover

no.261

dust

cover,slide

sw.

2SB605

KmiHer

Collector

Rise

Quad

Comparator

AN6912

Connection

Diagram

(Top View)

DUAL

*0"

TYPE

FLIP

FLOP

TC4013P

10c

U*C2

ICLOCKC

1CLEARC

1DATAC

PRESET

GNDfl

32g

320

32CT/X1

32CLEAR

32DATA

32PRTSCT

CD4O66BE

our

oirr

v-Q

rm.n.t

1A4E

COS/MOS

Quad

Bilateral

Switch

For

Logic

Syflemt

AppIicMtom

Amnptx.

Mttitsry,

and

Critic^

tndusirisi

Equtpmwii

Sped*!

Fe*tvr*t:

■

1S-V

riijitri

?.5-V

ptrt

toptf*

fwitcftim

•

ton

lypiol

fMlMMM*

1S.V

op^atiM

CJI

r*tkt>»o»

mmnimd

withm

o*«r

h£i

part

topwh

■%*•!

rvifi

Andere Handbücher für SVC-350

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