Marantz SR620 User manual

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MARANTZ

DESIGN

AND

SERVICE

Using

superior

design

and

selected

high

grade

components,

MARANTZ

Company

has

created

the

ultimate

in

stereo

sound.

Only

original

MARANTZ

parts

can

insure

that

your

MARANTZ

product

will

continue

to

perform

to

the

specifications

for

which

it is

famous.

Parts

for

your

MARANTZ

stereo

are

generally

available

within

72

hours

throughout

the

nation

via

a

toll-free

line

to

our

National

Parts

Depot

in

California.

The

sales

professionals

who

take

your

call

immediately

refer

to

their

own

desk

top

com-

.

puter

terminal

and

can

quickly

determine

the

availability

and

price

information

you

require.

If,

for

some

reason,

your

order

should

exceed

our

available

stock,

we

usually

can

instantly

provide

an

alternate

replacement

part

or

current

delivery

infor-

mation.

When

the

order

is

placed

and

confirmed,

the

computer

simultaneously

generates

‘‘hard

copy’’

orders

at

the

distribu-

tion

center.

As

hard

copies

come

directly

from

the

computer

to

the

national

parts

depot,

your

requested

stock

is

assembled

and

prepared

for

shipment

and

placed

on

the

first

available

carrier

for

delivery

to

you.

ORDERING

PARTS

Phone

orders

will

eliminate

mail

delays,

and

we

encourage

the

use

of

this

method.

If

you

order

by

mail,

use

MARANTZ

parts

order

froms

which

are

available

from

our

National

Parts

Depot

located

at

the

following

address:

SUPERSCOPE

NATIONAL

PARTS

DEPARTMENT

20525

Nordhoff

Street

Chatsworth,

California

91311

Phone:

1-800-423-5108

1-213-998-9333

oa

The

following

information

must

be

supplied

to

eliminate

delays

in

processing

your

order:

.

Complete

address.

.

Complete

part

numbers.

.

Complete

description

of

parts.

.

Model

number

for

which

part

is

required

(indicate

MARANTZ).

.

Account

number

(for

account

customers

only).

ahwon

Direct

consumers

will

be

provided

with

the

current

retail

price

quotation

on

available

parts

in

order

to

advise

them

of

the

cost

of

the

parts

and

shipping.

OVERSEAS

PARTS

ORDERING

Parts

may

also

be

ordered

from

the

following

overseas

addresses:

U.S.A.

CANADA

AUSTRALIA

JAPAN

MARANTZ

COMPANY,

INC.

SUPERSCOPE

CANADA,

LTD.

MARANTZ

AUSTRALIA

MARANTZ

JAPAN,

INC.

National

Service

Dept.

3710

Nashua

Drive

32

Cross

Street

3622

Kamitsuruma

P.O.

Box

577

Mississauga

Brookvale,

NSW

2100

Sagamihara-shi

Chatsworth,

CA

91311

Ontario,

Canada

L4V1M5

Australia

Kanagawa,

Japan

U.S.A.

EUROPE

MARANTZ

S.A.

MARANTZ

AUDIO

U.K.

LTD.

MARANTZ

BELGIUM

MARANTZ

SVENSKA

A.B.

326

Avenue

Louise

Bte

32

Unit

15/16

45

Rue

Auguste

Van

Zande

Svartviksvangen

56

1050

Brussels

Saxon

Way

Industrial

Estate

1080

Brussels

Traneberg

Belgium

Motor

Lane

Belgium

Box

12016

Harmondsworth

UB7

OLW

161

12

BROMMA

Great

Britain

SWEDEN

MARANTZ

GERMANY

GMBH

MARANTZ

FRANCE

MARANTZ

GMBH

AUSTRIA

,

Max-Planckstrasse

22

4

Rue

Bernard

Palissy

Wiedner

Hauptstrasse

98

6072

Dreieich

1

92600

Asnieres

1050

WIEN

West

Germany

France

AUSTRIA

MARANTZ

NORSKE

A.S.

MARANTZ

DENMARK

e

Refstadalieen

13

Bregnerddvej

132b

Oslo

5

3460

BIRKER@D

Norway

DENMARK

All

of

the

above

locations

are

fully

equipped

to

take

care

of

your

total

service

needs.

Because

various

countries

have

differing

configuration

requirements,

it

is

necessary

that

you

contact

the

service

facility

in

your

particular

country.

In

the

event

that

there

is

no

service

location

listed

for

your

country,

please

contact

the

nearest

facility

for

the

necessary

assistance.

ERR

eR

B°ecn

ERE

ZZ’

TABLE

OF

CONTENTS

Section

Page

INTRODUCTION?

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1

1.

SHOCK

FIRE

HAZARD

SERVICE

TEST

.......

02

c

cece

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1

2:

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BOARDS

22

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Salata

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1

3.

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

.....

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0.

cece

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2

4.

TUNER

ALIGNMENT

PROCEDURES

.........

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nents

2

4.1

FM

Alignment

Procedures

.

2...

2.

ee

ne

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2

4.2

Multiplex

Alignment

Procedures

.

2...

ee

eet

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3

4.3

AM

Alignment

Procedures

...

2...

0.

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ee

3

5.

ALIGNMENT

POUNT.

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seers.

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tener

8

ete

Bar

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ee

EA

EAR

ed

sai

aia

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weiss

5

6.

CX

CIRCUIT

ALIGNMENT

AND

MEASUREMENT

PROCEDURE

.............

0.02

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5

7.

VOLTAGE

CONVERSION

..

1...

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tees

6

8.

<CIRCUIT

DESCRIPTION

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6

9-

‘BLOCK:

DIAGRAM:

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dS

20

10.

SCHEMATIC

DIAGRAM

AND

COMPONENT

LOCATIONS

.......

0.

0c

cee

ee

eee

23

10.1

U-COM

Assembly

(P501)

Schematic

Diagram

and

Component

Location

.........-.---+--5

200

ees

23

10.2

Scan

Step

Assembly

(P504)

Schematic

Diagram

and

Component

Location

(SR620/SR520)

...........

23

10.3.

Display

Assembly

(P502)

Schematic

Diagram

and

Component

Location

.........-....-+++e0-05-

24

10.4

Key

Switch

Assembly

(P503)

Schematic

Diagram

and

Component

Location............---++-.++-:

24

10.5

Tuner/Phono

Assembly

(P100)

Schematic

Diagram

and

Component

Location

(SR620/SR620L)........

26

10.6

Speaker

Switch

Headphone

Assembly

(PTO0)

Schematic

Diagram

and

Component

Location(SR620/SR620L).

26

10.7

Speaker

Terminal

Assembly

(PW00)

Schematic

Diagram

and

Component

Location

(SR620/SR620L).....

27

10.8

Power

Switch

Assembly

(PU00)

Schematic

Diagram

and

Component

Location

(SR620/SR620L)

.......

28

10.9

Volume/Balance

Assembly

(PGOO)

Schematic

Diagram

and

Component

Location

(SR620/SR620L)......

29

10.10

Tape

2

Monitor

Assembly

(PV00)

Schematic

Diagram

and

Component

Location

(SR620/SR620L)

......

29

10.11

Tone

Amp.

Assembly

(PE00)

Schematic

Diagram

and

Component

Location

(SR620/SR620L)

.........

30

10.12

DE-Emphasis

Switch

Assembly

(PC50)

Schematic

Diagram

and

Component

Location

(SR620

ONLY)

....

30

10.13

Main/Power

Supply

Assembly

(P700)

Schematic

Diagram

and

Component

Location

(SR620/SR620L)...

31

10.14

CX

Control

Assembly

(PD00)

Schematic

Diagram

and

Component

Location

(SR620

ONLY)

..........

32

10.15

CX

Switch

Assembly

(PD50)

Schematic

Diagram

and

Component

Location

(SR620

ONLY)

........-..

32

10.16

CAL.

L.E.D.

Assembly

(PZ00)

Schematic

Diagram

and

Component

Location

(SR620

ONLY).......--.

33

10.17

IND.

L.E.D.

Assembly

(PZ51)

Schematic

Diagram

and

Component

Location

(SR620

ONLY)

........-.

33

10.18

Tuner/Phono

Assembly

(P100)

Schematic

Diagram

and

Component

Location

(SR520/SR520L)

........

34

10.19

Speaker

Switch

Headphone

Assembly

(PT00)

Schematic

Diagram

and

Component

Location(SR520/SR520L)

.

34

10.20

Speaker

Terminal

Assembly

(PWOO)

Schematic

Diagram

and

Component

Location

(SR520/SR520L)

....

35

10.21

Power

Switch

Assembly

(PU0O)

Schematic

Diagram

and

Component

Location

(SR520/SR520L)

.......

36

10.22

Volume/Balance

Assembly

(PGOO)

Schematic

Diagram

and

Component

Location

(SR520/SR520L)......

37

10.23

Tone

Amp.

Assembly

(PE00)

Schematic

Diagram

and

Component

Location

(SR520/SR520L)

.........

38

10.24

DE-Emphasis

Switch

Assembly

(PC50)

Schematic

Diagram

and

Component

Location

(SR520

ONLY)

....

38

10.25

Main/Power

Supply

Assembly

(P700)

Schematic

Diagram

and

Component

Location

(SR520/SR520L)

.

. .

39

11.

EXPLODED

VIEW

AND

PARTS

LIST

...........

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40

12..

-ECECTRICAL:

PARTS

UIST

secceciced

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See

RO

49

13.

TECHNICAL

SPECIFICATIONS

~

.....

2...

ee

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60

14.

SCHEMATIC

DIAGRAM.

|

nse

2

bi

wane

ened

ie

8

Se

Oe

EI

a

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Pas

65

MODEL

SR620/SR620L

STEREOPHONIC

RECEIVER

MODEL

SR620CX

STEREOPHONIC

RECEIVER

MODEL

SR520/SR520L

STEREOPHONIC

RECEIVER

INTRODUCTION

This

service

manual

was

prepared

for

use

by

Authorized

Warranty

Stations

and

contains

service

information

for

Marantz

Model

SR520/SR520L

and

SR620/SR620L

Stereophonic

Receiver.

Servicing

information

and

voltage

data

included

in

this

manual

are

intended

for

use

by

the

knowledgeable

and

ex-

perienced

technician

only.

All

instructions

should

be

read

carefully.

No

attempt

should

be

made

to

proceed

without

a

good

understanding

of

the

operation

of

the

Receiver.

The

parts

list

furnishes

information

by

which

replacement

parts

may

be

ordered

from

the

Marantz

Company.

A

simple

description

is

included

for

parts

which

can

usually

be

obtained

through

local

suppliers.

1.

SHOCK

FIRE

HAZARD

SERVICE

TEST

CAUTION:

After

servicing

this

appliance

and

prior

to

returning

to

customer,

measure

the

resistance

between

either

primary

AC

cord

connector

pins

(with

unit

NOT

connected

to

AC

mains

and

its

Power

switch

ON),

and

the

face

or

front

Panel

of

product

and

controls

and

cha-

ssis

bottom.

Any

resistance

measurement

less

than

1

Megohms

should

cause

unit

to

be

repaired

or

corrected

before

AC

power

is

applied,

and

verfied

before

return

to

user/customer.

Ref.

UL

Standard

NO.

1270.

Para.

66.

3.

D

(Mandatory

Test

after

servicing

Electrical

Appliances,

effective

7-1-83).

2.

P.W.

BOARDS

As

can

be

seen

from

the

circuit

diagram

the

chassis

of

Model

SR520/SR520L

and

SR620/SR620L

consists

of

the

following

units.

Each

unit

mounted

on

a

printed

circuit

board

is

described

within

the

square

enclosed

by

a

bold

dotted

line

on

the

circuit

diagram.

1.

Tuner/Phono/Switch

. .

.

.mounted

on

P.W.

Board

P100

2.

Power

Supply.

........

mounted

on

P.W.

Board

P700

3.

Tone

Amp.

.........--

mounted

on

P.W.

Board

PEOO

4.

Speaker

Switch/

Headphone

..........

mounted

on

P.W.

Board

PT00

5.

Power

Switch.

.......

mounted

on

P.W.

Board

PUQO

6.

Speaker

Terminal

.....

mounted

on

P.W.

Board

PW0O

7.

Balance

Control

......

mounted

on

P.W.

Board

PGOO

8.

Tape

2

Monitor.......

mounted

on

P.W.

Board

PV0O

(SR620/SR620L)

9.

DE-Emphasis

Switch

.

mounted

on

P.W.

Board

PC50

(SR620/SR520(E)

SR620(P))

10.

CX

Control

........

mounted

on

P.W.

Board

PDOO

11.

CX

Switch.

........

mounted

on

P.W.

Board

PD50

12.

CAL..LED

acces

8

mounted

on

P.W.

Board

PZ00

13.

Ind.

LED.

..........

mounted

on

P.W.

Board

PZ51

(SR620(U))

14.

UCOM............

mounted

on

P.W.

Board

P501

15.

Display

............

mounted

on

P.W.

Board

P502

16.

Key

Switch

.........

mounted

on

P.W.

Board

P503

17.

Scan

Switch.

........

mounted

on

P.W.

Board

P504

(SR620/SR520)

Item

3.

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

Use

This

table

lists

the

test

equipment

required

for

servicing

the

Model

SR620/SR620L/SR520/SR520L

Stereophonic

Receiver.

AM

Signal

Generator

Signal

source

for

AM

alignment

Test

Loop

Use

with

AM

Signal

Generator

FM

Signal

Generator

MPX

Signal

Generator

Signal

source

for

FM

alignment

Stereo

separation

alignment

and

trouble

shooting

Distortion

Analyzer

Audio

Oscillator

AC

VTVM

Distortion

measurements

Sinewave

and

squarewave

signal

source

Voltage

measurements

(AC)

Oscilloscope

Waveform

analysis

and

trouble

shooting

Frequency

Counter

MPX

Oscillator

adjustment

(VCO)

Circuit

Tester

Trouble

shooting

DC

VTVM

Voltage

measurements

(DC)

AC

Wattmeter

Monitors

primary

power

to

tuner

Line

Voltmeter

Monitors

potential

of

primary

power

to

tuner

Variable

Autotransformer

DC

Didital

Voltmeter

Adjusts

level

of

primary

power

to

tuner

Adjust

the

DC

offset

of

main

amplifier

output.

(SR620/SR620L)

4.

TUNER

ALIGNMENT

PROCEDURES

A

dummy

resistor

of

47

kohms

must

be

connected

across

the

tuner

output

terminals

before

alignment.

4.1

FM

Alignment

Procedures

(Selector

switch

in

the

‘‘FM”

position,

Mode

switch

in

the

MONO

Position.)

AUTO/MANU

Switch

in

the

“MANU”

Position

(SR620/SR620L)

1.

FM

RF

Alignment

Signal

Source

Connection

Signal

Frequency

Indicator

Connection

Set

the

Digital

Readout

Frequency

Adjust:

RF

generator

to

FM

antenna

terminals

through

matching

network

(300

ohms,

balanced)

Maintain

RF

level

below

limit.

VTVMto

Lor

R

channel

output

(J110)

FRONT

END

IFT

L8

for

maximum

output

and

distortion.

RF

generator

71mV

output

to

FM

antenna

terminals

through

matching

network.

(300

ohms,

balanced)

“O"'

center

meter

or

DC

current

meter

in

100A

range

between

(J117

and

J118)

L101

core

so

that

the

meter

indicates

its

center

or

may

read

‘'O"’.

RF

generator

1

mV

output

to

FM

antenna

terminals

through

matching

network.

(300

ohms,

balanced)

Distortion

meter

to

Lor

R

channel

output

(J110)

98.0

MHz

L102

core

for

minimum

distortion.

RF

generator

to

12.5uV

Distortion

meter

to

L

or

R

Channei

Output

(J110)

Turn

R117

until

output

is

defeated,

then

re-adjust

R117-to

the

point

where

output

is

obtained

again.

4.2

Multiplex

Alignment

Procedures

(Selector

switch

in

the

““FM’’

position/Mode

switch

in

the

STEREO

position)

Signal

Source

Connection

Indicator

Connection

Signal

Frequency

Set

the

Digital

Readout

Frequency

Adjust:

£

RF

generator

to

FM

antenna

terminals

through

matching

signal

network.

with

1mV

FM

stereo

Frequency

counter

98.0

MHz

to

(J119)

R312

so

that

frequency

may

precisely

read

76

kHz.

RF

generator

to

FM

antenna

terminals

through

matching

with

1mV

FM

stereo

signal

Modulation

level.

DIN

40kHz

+8%

pilot

SHF

67.5

kHz

+9%

pilot

network

(300

ohms,

balanced)

VTVMto

Rorl

channel

output

(5102)

98.0

MHz

tFT

(A101)

for

minimum

distortion.

RF

generator

to

FM

antenna

terminals

through

matching

with

1mV

FM

stereo

signal.

network

(300

ohms,

balanced)

VTVM

to

right

and

left

channel

output

(J110)

Pilot

only

R309

so

that

minimum

output

should

be

the

same

in

both

channels.

RF

generator

to

FM

antenna

terminals

through

matching

with

1mvV

FM

stereo

signa!

Modulation

level.

DIN

40kHz

+8%

pilot

IHF

67.5

kHz

+9%

pilot

network

(300

ohms,

balanced)

VTVM

to

right

channel

output

(J110)

Stereo

left

(1,000

Hz}

VTVM

to

left

channel!

output

(J110)

Stereo

right

(1,000

Hz)

4.3

AM

Alignment

Procedures

Repeat

steps

4

and

5.

1.

AM

(MW)

Local

Oscillator

Alignment

Signal

Source

Connection

2.

AM

(MW)

RF

Alignment

Signal

Source

Connection

Indicator

Connection

Signal

Frequency

Set

the

Digital

R338

for

same

separation

in

both

channels.

Adjust:

DC

voltmeter

in

3V

range

to

(5102)

Indicator

Connection

Signal

Frequency

Set

the

Digital

LAO1

for

1.5V.

Readout

Frequency

Apply

the

signal

to

the

AM

loop

antenna

from

the

RF

generator

using

the

test

loop.

As

per

the

Figure

1.

1,404

kHz

1,404

kHz

VTVMto

Lor

R

CAO5-1

for

maximum

output.

—————

channel

output

603

kHz

(J102)

603

kHz

3.

AM

IF

Alignment

Signal

Source

Connection

pn

Erereerin,

US

2

Se

ee

LAO3

for

maximum

output.

Repeat

steps

1

and

2

as

necessary

to

obtain

maximum

sensitivity.

Indicator

Connection

Signal

Frequency

Set the

Digital

Readout

Frequency

Adjust:

Sweep

generator

to

(J101

AM

Ant)

Quiet

point

on

band

|

450

kHz

Oscilloscope

to

,

i

(J111)

LAOS

for

maximum

and

symmetric

response.

4.

LW

Local

Oscillator

Alignment

(Selector

switch

in

the

“LW”

position)

SR620L/SR520L

Signal

Source

Signal

Indicator

Set the

Digital

Connection

Frequency

Connection

Readout

Frequency

Adjust:

DC

voltmeter

in

12V

range

to

153

kHz

LAO2

for

3.0V.

(J102)

5.

LW

RF

Alignment

(Selector

switch

in

the

“LW”

position}

SR620L/SR520L

Signal

Source

Signal

Indicator

Set

the

Digital

.

5

Adjust:

Connection

Frequency

Connection

Readout

Frequency

;

Apply

the

signal!

to

the

H

kKH

CAO5-2

for

maximum

AM

loop

antenna

from

the

S20

ie

VTVM

to

Lor

R

B20'kHe

output.

RF

generator

using

the

test

channei

output

~

=

loop.

170

kHz

($102)

170

kHz

LA0O4

for

maximum

As

per

the

Figure

1.

output.

Repeat

steps

1

and

2

as

necessary

to

obtain

maximum

sensitivity.

6.

Main

Amp.

Aignment

(Function

switch

in

the

“Aux"

position)

Connect

the

digital

voltmeter

to

the

Speaker

terminals

(no-load

condition)

and

adjust

R709

(L.

ch.)

and

R710

(R.

ch.)

for

an

indication

of

0

V.

(Volume

turned

to

minimum.)

Test

Loop

AM

Loop

Antenna

©

2

60cm

=

Figure

1.

Application

of

AM

Signal

ALIGNMENT

POINTS

6.

CX

CIRCUIT

ALIGNMENT

AND

MEASUREMENT

PROCEDURE

6.1

Alignment

Procedure

(a-1)

Output

Level

Adjustment

1

3.

.

Set

the

input

VR

(RD53)

to

mechanical

center.

2.

Apply

a

1

kHz

sine

wave

signal

to

the

Phono

input

(appr.

4

mV).

Attenuate

the

input

audio

signal

generator

until

both

CX

CAL

indicator

LEDs

(QZ01,

QZ02)

are

out.

.

Check

the

DC

voltage

between

test

points

JDO5

(+)

and

JDO6

(GND)

at

this

time.

Voltage

must

be

5

V

40.5V.

.

Next,

adjust

the

semi-fixed

RD33

(L.

ch.)

and

RD34

(R.

ch.)

for

equal

output

level

at

TAPE

OUT

with

the

CX

switch

(SD51)

in

‘‘on”

and

“off’’

positions.

(a-2)

DC

Offset

Adjustment

1

.

After

performing

the

adjustment

described

in

a-1),

adjust

the

semi-fixed

VR

RD27

(L.

ch.)

for

a

DC

voltage

reading

of

O

V

between

test

points

JDO7

and

JDO6,

with

the

CX

switch

(SD51)

in

the

“on”

position.

.

In

the

seme

way,

adjust

the

semi-fixed

RD28

(R.

ch.)

for

a

DC

voltage

reading

of

0

V

between

test

points

JDO8

and

JDO6G.

.

Next,

check

the

left

channel

DC

voltage

again,

and

perform

re-adjustment

if

a

change

has

occured.

6.2

Measurement

Procedure

Measurement

of

Input

Vs.

Output

Level

.

Apply

a

1

kHz

sine

wave

signal

to

the

Phono

input

and

attenuate

the

input

signal

until

both

CX

CAL

LEDs

are

out.

{Input

VR

at

mechanical

center).

.

Assume

the

TAPE

OUTPUT

level

at

this

time

to

be

OdB.

Next,

attenuate

the

input

signal

by

10

dB.

.

Measure

the

TAPE

OUTPUT

level

at

this

time,

and

confirm

that

it

is

-20

dB+5

dB.

.

Next,

attenuate

the

input

signal

to

—30

dB

(—10

dB

+

—20

dB

total

of

—30

dB).

.

Measure

the

TAPE

OUTPUT

level

at

this

time,

and

confirm

that

it is

—50

dB+5

dB.

THD

Measurement

.

Apply

a

1

kHz

sine

wave

signal

to

the

Phono

input

and

attenuate

the

input

signal

until

both

CX

CAL

LEDs

are

out.

(Input

VR

at

mechanical

center.)

.

Next,

raise

the

input

signal

level

by

6

dB.

At

this

time,

THD

at

the

TAPE

OUTPUT

must

measure

0.5%

or

less.

7.

VOLTAGE

CONVERSION

To

convert

the

unit

to

a

different

power

source

voltage,

Voltage

Conversion

Chart

change

the

position

as

illustrated

in

the

drawing

below.

CAUTION

DISCONNECT

POWER

SUPPLY

CORD

FROM

AC

OUTLET

BEFORE

CONVERTING

VOLTAGE.

DO

NOT

DISASSEMBLE

THE

VOLTAGE

SELECTOR

ABSOLUTELY.

‘eS

_I

240V

~

220V

~

240V

~

120V

~

\

/

220V

~

\

/

110V~

(A)(N}(T)

Version

{E)

(P)

Version

NOTE

ON

SAFETY:

Symbol

A\

Fire

or

electrical

shock

hazard.

Only

original

parts

should

be

used

to

replace

any

part

marked

with

symbol

A\

.

Any

other

component

substitution

(other

than

original

type),

may

increase

risk

of

fire

or

electrical

shock

hazard.

8.

CIRCUIT

DESCRIPTION

The

Mode!

SR620/SR620L/SR520/SR520L

is

an

LW/MW/FM

digital

frequency-synthesized

tuner

using

a

PLL

frequency

synthesizer

designed

for

use

in

LW/MW/FM

tuners

in

conjunction

with

a

CMOS

LSI

controller.

8.1

LW/MW/FM

Tuner

PLL

Frequency

Synthesizer

and

Controller

TC9147P

(Q501)

@

Maximum

Ratings

(Ta

=

25°C)

Gaunacsa

Characteristic

Symbol

Ratings

tee

pane

Supply

Voltage

Vop

0~6

ee

:

a

seein

Input

Voltage

Vig

—~0.3~

Vop

+0.3

cree

mpeg

a

MANUAL

7

36D

1EST

Output

Voltage

[Your

03~Voot03

|

ee

Output

Current

(Note)

lout

30

Sees

sooiaes

ua

a2

fstop2

bst0p3

30DE!

Power

Dissipation

Pp

800

m2

Operating

Temperature

Topr

~30~

75

we

Storage

Temperature

Tstg

~55

~

125

(Note)

Bipolar

transistor

output

current.

ie

®

Block

Diagram

AMiy

PSC

FMin

TEST

DO-1

DO-2

STOP1

STOP2 STOP3

PROGRAMMABLE

COUNTER

AUTO

STOP

COUNTER

PROCESSING

CIRCUIT

TIMING

GENERATING

CIRCUIT

PRESET

MEMORY

(RAM)

ADDRESS

DECODER

REFERENCE

FREQUENCY

DIVIDER

LAST

FREQUENCY

MEMORY

CONSTANT

ROM

MULTIPLEXER

PRESET

MEMORY

CONTROL

X'TAL

BAND

SELECTING

OSCI-

LLATER

CONTROL

SCAN

CONTROL

MANUAL

AUTO

UP

DOWN

Marantz SR620 User manual

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