Technics RS-M7 User manual

Front-Loading

Vartical

Hold

Stereo

Cassette

Deck

with

Full

Auto-Stop

Mechanism

and

Dolby

NR

DO

(baer

averen

RS-631

MECHANISM

SERIES

Specifications

Power

requirement:

Power

consumption:

Motor:

Track

system:

Tape

speed:

Wow

and

flutter:

Frequency

response:

Signal-to-noise

ratio:

For

All

European

areas

except

United

Kingdom

AC;

110/220V,

50/60

Hz

For

Asia,

Latin

America,

Middle

East

and

Africa

areas

AC;

110/125/240V,

50/60

Hz

For

Australia

AC;

240V,

50/60Hz

10

W

Electronic

control

DC

motor

4-track

2-channel

stereo

recording

and

playback

4.8cm/s

0.08%

(WRMS),

£0.20%

(DIN)

CrOQ2/Fe-Cr

tape;

30

~15,000

Hz

30~14,000

Hz

(DIN)

30~14,000

Hz

30

~

13,000

Hz

(DIN)

Dolby

NR

in;

66

dB

(above

5kHz)

Dolby

NR

out;

56 dB

(signal

level

=max.

record-

ing

level,

Fe-Cr/CrOz

type

tape)

Normal

tape;

Service

Man

Fast

forward

and

ORDER

NO.

ARD-7903018C

Cassette

Deck

RS-M7

rae

)

Black

Type

sstveuveennnnsccuteoscunseoccnntunscuustsceuuuneccnenny-cuntnosquustsceunn40-canetoetobecetanboseQiUUectttboestnenecetttthy,

This

is

the

Service

Manual

for

the

?

following

areas.

Po

Dyer

For

All

European

areas

:

except

United

Kingdom.

1

DB

-soeeeese

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

For

Australia.

rewind

time:

Approx.

86

seconds

with

C-60

cassette

tape

Input:

Output:

Rec/pb

connection:

Bias

frequency

:

Head

:

Dimensions:

Weight:

Specifications

are

subject

to

change

without

notice.

+

‘Dolby’

and

the

double-D

symbol

are

trademarks

of

Dolby

Laboratories.

Technics

MIC;

sensitivity

0.25

mV,

input

impedance

33

KQ

applicable

microphone

impedance

4002

~

10KQ

LINE;

sensitivity

60

mV,

input

impedance

47

KQ

LINE;

output

level

420

mV,

output

impedance

1KQ

or

less,

load

impedance

22

KQ

over

HEADPHONE;

output

level

65

mV,

load

impedance

8Q

5P

DIN

type;

input

sensitivity

0.25

mV,

impedance

8.2

KQ

output

level

420

mV,

impedance

4.7

KQ

80

kHz

2-head

system;

1-super

permalloy

head

for

record/playback

1-double-gap

ferrite

head

for

erasure

41.0cm(W)

x

14.2cm(H)

x

25.4cm(D)

45kg

Matsushita

Electric

Trading

Co.,

Ltd.

P.O.

Box

288,

Central

Osaka

Japan

LOCATION

OF

CONTROLS

AND

COMPONENTS

Tape

Counter

and

Reset

Button

Recording

Indication

Lamp

(rec)

(tape

counter)

Cassette

Compartment

Door

Level

Meters

(left/right)

Power

Switch

(power)

Microphone

Jacks

(microphone

input)

(left/right)

Input

Level

Controls

Record

Button

(

rd

O)

(input

lexel)

eco

reco

T.

Play

Button

(play

p>)

ape

Selector

(tape

select)

Input

Selector

(input

select)

Rewind

Button

(rew

<q

<q)

Fast

Forward

Button

(ff

>

>)

foalenniien

ee

Switch

Stop

Button

(stop

B)

Eject

Button

(eject

A

)

Headphones

Jack

(phones)

Pause

Button

(pause

18

)

Record/

Playback

Connection

Socket

(REC/

PB)

Line

Input

Jacks

(LINE

IN)

Line

Output

Jacks

(LINE

OUT)

Fig.

1

Fig.

6

RS-M7

Fig

.7

Procedure

To

remove

——

.

Remove

Shown

in

fig.

——

.

Case

cover

+

2

black

screws

2

Bottom

cover

+

3

screws

3

+

Control

knob

Front

panel

+

Cassette

lid

+

4

screws

Control

button

assembly

2

3,4

|

-

4

red

screws

and

cassette

holder

Mechanism

Circuit

board

-

6

red

screws

+

Headphone

holding

screw

+

3

switch

shelters

-

10

screws

MEASUREMENT

AND

ADJUSTMENT

METHODS

NOTE:

1.

Make

sure

heads

are

clean.

2.

Make

sure

capstan

and

pressure

roller

are

clean.

4.

Dolby

NR

switch:

OUT.

3.

Judgeable

room

temperature:

20+5°C

(68+9°F).

Head

azimuth

adjustment

Condition:

*

Playback

mode

Equipment:

*

VTVM

*

Oscilloscope

*

Test

tape

(azimuth)

---

QZZCFM

.

Test

equipment

connection

is

shown

in

fig.

8.

.

Playback

azimuth

tape

(QZZCFM

8kHz).

.

Adjust

record/playback

head

angle

adjustment

screw

(B)

in

fig.

Test

tape

9

so

that

output

level

at

LINE

OUT

becomes

maximum.

.

Measure

both

channels,

and

adjust

levels

for

equal

output.

.

After

adjustment

lock

head

adjustment

screw

with

lacquer.

Tape

speed

Condition:

*

Playback

mode

Equipment:

*

Digital

electronic

counter

or

frequency

counter

*

Test

tape

---

QZZCWAT

5.

Tape

selector:

Normal

position.

LINE

OUT

©)

Playback

mode

VTVM

Oscilloscope

Fig.

8

Record/playback

Fig.

9

Tape

speed

accuracy

1.

2:

Test

equipment

connection

is

shown

in

fig.

10.

ald

Playback

test

tape

(QZZCWAT

3,000H2z),

and

supply

playback

signal

to

frequency

counter.

Test

tape

3.

Measure

this

frequency.

4.

On

the

basis

of

3,000Hz,

determine

value

by

following

formula:

f—3,000

.

3000

7

X

100

(%)

where,

f=measured

value

Tape

speed

accuracy

=

P

head

Playback

mode

Digital

electric

counter

Fig.

10

ITEM

MEASUREMENT

&

ADJUSTMENT

Playback

gain

Condition:

*

Playback

mode

Equipment:

*

VTVM

*

Oscilloscope

*

Test

tape

---

QZZCFM

Bias

current

Condition:

*

Record

mode

*

When

bias

current

is

adjusted

on

one-channel

only,

note

that

bias

current

on

the

other

channel

may

vary.

*

When

L5

or

L6

is

the

replaced,

preset

core

position

to

bottom

side

of

coill

and

then

readjust

optimum

bias

current.

Equipment:

*VTVM

_

*

Oscilloscope

Erase

current

Condition:

*

Record

mode

Equipment

:

*

VTVM

*

Oscilloscope

*

Resistor

(1)

5.

Take

measurement

at

middle

section

of

tape.

Standard

value:

+1.5%

Adjustment

method

1.

Playback

the

test

tape

(middle).

2.

Adjust

so

that

frequency

becomes

3,000

Hz.

3.

Tape

speed

adjustment

VR

shown

in

fig.

21.

Tape

speed

fluctuation

Make

measurements

in

same

manner

as

above

(beginning,

middle

and

end

of

tape),

and

determine

the

difference

between

maximum

and

minimum

yalues

and

calculate

as

follows:

fi—f2

x

9

3,000

100

(%)

f1=maximum

value,

f2z=minimum

value

Tape

speed

fluctuation=

Standard

value:

1%

1.

Test

equipment

connection

is

shown

in

fig.

8.

2.

Playback

standard

recording

level

portion

on

test

tape

(QZZCFM

315Hz),

and

using

VTVM

measure

the

output

level

at

LINE

OUT

jack.

3.

Make

measurement

for

both

channels.

Standard

value:

0.39V

Adjustment

1.

If

measured

value

is

not

standard,

adjust

VR3

(CH),

VR4

(R-CH)

(See

fig.

21

on

page

5).

2.

After

adjustment,

check

“Playback frequency

response”

again.

.

Test

equipment

connection

is

shown

in

fig.

11.

.

Place

UNIT

into

record

mode,

and

tape

selector

to

normal

position.

.

Read

voltage

on

VTVM

and

calculate

bias

current

by

following

formula:

R/P

head

Value

read

on

VTVM

(V)

ig.

11

Bias

current

(A)

=

10

©)

Standard

value:

285A

(Normal

position),

340A

(Fe-Cr

position),

380xA

(CrO2

position)

.

Adjust

L5

(L-CH)

and

L6

(R-CH)

(See

fig.

21

on

page

5).

Erase

head

.

Connect

1Q

resistor

between

the

ground

side

terminal

of

erase

head

ground

lead

wire

removed

(See

fig.

13).

.

Connect

VTVM

to

both

ends

of

12

resistor.

.

Place

UNIT

into

record

mode,

and

measure

voltage

across

the

12

resistor.

VTVM

Oseitoscope

.

Determine

erase

current

with

the

following

formula:

Fig.

12

Voltage

across

both

ends

of

12

resistor

Erase

head

1

(Q)

Record

mode

Erase

current

(A)

=

a)

Fig.

13

Standard

value:

More

than

40mA

(Normal

position),

More

than

45mA

(Fe-Cr

position),

More

than

55mA

(CrOz2

position)

Overall

gain

Condition:

*

Record/playback

mode

*

Input

level

control

---

MAX

*

Standard

input

level;

MIC

«+++

—72+3dB

LINE

IN

---

—2443dB

Equipment:

*

AF

oscillator

*VTVM

*

Oscilloscope

*

ATT

*

Test

tape

(reference

blank

tape)

«++

QZZCRA

for

Normal

Level

meter

Condition:

*

Record

mode

*

Input

level

control

---

MAX

Equipment:

*

VTVM

*

AF

oscillator

*

Oscilloscope

*

ATT

Overall

frequency

response

Condition:

*

Record/playback

mode

*

Input

level

control

---

MAX

Equipment:

*

VTVM

*

AF

oscillator

*

ATT

*

Test

tape

(reference

blank

tape)

+++

QZZCRA

for

Normal

«++

QZZCRX

for

CrO2

«++

QZZCRY

for

Fe-Cr

Overall

frequency

response

adjustment

(As

a

standard

for

adjustment)

ITEM

MEASUREMENT

&

ADJUSTMENT

10.

Adjustment

1—Using

bias

current

1.

Record

mode

Adjust

ATT

until

monitor

level

at

LINE

OUT

becomes

0.39

V.

UNEIN

Test

tape

.

Using

test

tape,

make

recording.

LINE

OUT

8

.

Playback

recorded

tape,

and

make

sure

the

value

at

LINE

OUT

pier

a

©

on

VTVM

becomes

0.39V.

o

fe)

.

If

measured

value

is

not

0.39,

adjust

VR5

(L-CH),

VR6

Test

tape

P#yback

mode

VTVM

—

Oscitioscope

(R-CH)

(See

fig.

21

on

page

5).

Fig.

14

.

Repeat

from

step

(2).

.

Test

equipment

connection

is

.

Load

reference

blank

test

tape

and

.

Supply

1kHz

signal

from

AF

.

Adjust

ATT

so

that

input

level

is

.

Record

each

frequency

50

Hz,

.

Set

the

tape

selector

to

CrOz,

.

Measure

as

same

as

manner

RS-M7

Test

equipment

connection

is

shown

in

fig.

14.

Place

UNIT

into

record

mode,

and

tape

selector

to

normal

position.

Supply

1

kHz

signal

(—24

dB)

from

AF

oscillator,

through

ATT,

to

LINE

IN.

AF

oscillator

Test

equipment

connection

is

shown

in

fig.

15.

Supply

1kHz

signal

from

the

AF

oscillator,

through

the

ATT,

to

the

LINE

IN

jack.

Adjust

ATT

so

that

the

monitor

level

at

LINE

OUT

becomes

0.39V.

Adjust

VR501

(L-CH)

and

VR502

(R-CH)

so

that

the

level

meters

indicate

0

dB.

LINE

OUT

LINE

IN

AF

oscillator

Overall

frequency

response

chart

(Normal)

1OKH

Skee

|

}

shown

in

fig.

14.

place

UNIT

into

record

mode.

oscillator

through

ATT

to

LINE

IN.

—20dB

below

standard

recording

level

(standard

recording

level

—24

dB).

Fig.

16

100Hz,

200Hz,

1kHz,

2kHz,

4kHz,

8kHz

and

10kHz

(12kHz

for

CrO2

and

Fe-Cr

tape)

at

the

same

level.

Playback

and

express

in

dB

the

difference

between

playback

output

level

of

each

frequency

based

on

playback

output

level

of

1kHz.

Make

sure

that

the

measured

value

is

within

the

range

specified

in

the

overall

frequency

response

chart.

Overall

frequency

response

chart

(Fe-Cr)

SkHz

12kHz

a

ad

2kHZ

!

kHz

{

Fig.

17

Overall

frequency

response

chart

(CrO2)

Fe-Cr

position.

2itz

5]

kHz

{

above.

Make

sure

that

the

measured

value

is

within

the

range

specified

in

the

overall

frequency

response

chart

for

CrO2

and

Fe-Cr

tape

shown

in

fig.

17

and

18.

Fig.

18

When

the

frequency

response

between

the

middle

and

high-

frequency

range

becomes

higher

than

the

standard

value,

as

shown

by

the

solid

line

in

fig.

19,

increase

the

bias

current

by

turning

L5

(L-CH),

L6

(R-CH).

When

it

becomes

lower,

as

shown

by

dotted

line,

reduce

the

bias

current

by

turning

L5

(L-CH),

L6

(R-CH).

OmHs

11

RMe

aemr

amy

Fig.

19

Note:

For

the

method

of

bias

current

measurement,

refer

to

“Bias

current

adjustment”

on

page

3.

Adjustment

2—Using

the

peaking

coil

for

recording

equalization

When

the

frequency

response

is

flat

in

the

middle-frequency

range

ane

towie

Take

and

makes

a

sharp

rise

or

drop

in

the

high-frequency

range,

as

Fig.

20

shown

in

fig.

20,

adjust

by

turning

the

peaking

coil

L3

(L-CH),

4

(R-CH)

for

normal

tape

recording

equalization.

Dolby

NR

circuit

Condition:

*

Record

mode

*

Input

level

control

---

MAX

Equipment:

*VTVM_

*

AF

oscillator

*

ATT

*

Oscilloscope

.

Place

UNIT

into

record

mode,

set

the

Dolby

NR

switch

to

OUT

position

and

supply

to

LINE

IN

to

obtain

—34.5dB

at

TP3

(LCH),

TP4

(R-CH)

(frequency

5

kHz).

.

Confirm

that

the

value

at

IN

position

is

8

(+

2.5)dB

greater

than

the

value

at

OUT

position

of

Dolby

NR

switch.

ADJUSTMENT

PARTS

LOCATION

Tape

speed

adjustment

VR.

S7

VR502

L3

L4

VR6

TP4

VR4

TP2

L6

TP3

VR3

TP1

L5

Fig.

21

ELECTRICAL

PARTS

LOCATION

a

ca

CABINET

PARTS

NOTE:

A

indicates,

that

only

parts

specified

G10

by

the

manifacturer

be

used

for

safety.

Part

Name

&

Description

E5

CABINET

PARTS

QYP0851

Front

Panel

Assembly

“Silver

Type”

Ell

ver

Type

QYP0850

Front

Panel

Assembly

“Black

Type”

E4

QYFO375

Cassette

Lid

Assembly

“Silver

Type”

QYF0376

”

“Black

Type”

QG6C1135

Bottom

Board

Assembly

QGK2940

Switch

Shelter

a

ee

|

ne

coreeeet

“Silver

Type”

E10

E2

El

[

£23

1

gaxz998

i

“Black

Type”

|

;

E8

H

ea

gar1452

Volume

Knob-1

|

Pg

E7

|

66

QGT1440s

Volume

Knob-2

|

—

|

G7

QGC1139

Case

Cover

!

800.

!

ot

|

[aus

|e

}

|

D

ain

Name

Plate

ee

eS

Se

=

ail

x

For

All

European

areas

except

United

Kingdom.

|

QGS2660

"

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

|

QGS2669

”

3

For

Australia.

G10

XTN3+10B

Tapping

Screw

@3X10

E37

[>«For

All

European

areas

except

United

eet

FUSE

(500mAT)

E21

E20

£22

E39

re

King

All

European

areas

except

Bovtee

Kingdom.

FUSE

(400mAT)

Gll

XTN4+10B

Tapping

Screw

®4X10

G12

QXA0720

Push

Button

Holding

Angle

G13

QG01580

Pause

Button

“Silver

Type”

QG01593

"

“Black

Type”

QG01579

Record

Button

“Silver

Type”

QG01592

”

“Black

Type”

QG01578

Playback

Button

“Silver

Type”

QG01591

”

“Black

Type”

QG01577

Rewind

Button

“Silver

Type”

QGO1590

”

G24

“Black

Type”

QG01576

Fast

Forward

Button

“Silver

Type”

QG01589

”

“Black

Type”

QG01575

Stop

Button

“Silver

Type”

QG01588

"

“Black

Type”

QG01574

Eject

Button

“Silver

Type”

QG01587

"

“Black

Type”

G20

XUC4FT

Stop Ring

4¢

E40

/(2xFor

Asia,

Latin

America,

Middle

East

and

Africa

areas.

E29

S7

(For

All

European

areas

except

United

Kingdom.

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

G21

QMN2382

Push

Button

Shaft-A

G22

QMN1861

Push

Button

Shaft-B

G23

QKF6011

Cassette

Holder

Assembly

G24

QBP1818

Holder

Spring

G25

XTN26+5B

Tapping

Screw

®2.6x5

G26

XUC3FT

Stop Ring

3¢

G27

QBN1641

Lid

Spring

G28

DN}

|

QKM1368K

Main

Case

%For

Asia,

Latin

America,

Middle

East,

Africa

and

All

European

areas

except

United

Kingdom.

|

QKM1373K

”

¥

For

Australia.

G29

QBW2066

’|

Spacer

G30

QBP1848

Earth

Spring

ACCESSORIES

Al

QEBO125

Connection

Cord

NOTE:

A

indicates

that

only

parts

specified

by

the

manufacturer

be

used

for

sefety.

Part

Name

&

Description

ipti

‘ti

No.

eprint

A2

WA}

QJP0603S

AC

Plug

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pt

Part

Name

&

Description

Part

Name

&

Description

Ref.

No.

Part

Name

&

Description

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

E14

QJT1054

Contact

£20

DI

|

A|

QBJ1425

Cord

Bushing

QMN2381

Recording

Shaft

A3

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|

Demonstration

Tape

ELECTRICAL

PARTS

E15

QJT0055

Connector

%For

All

European

areas

except

United

Kingdom

E29

RME144ZA

Cord

Clamper

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Latin

America,

Middle

East

and

Africa

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|

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Book

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QWY4113Z

Record/Playback

Head

“Silver

Type”

For

Australia.

E32

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Tapping

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All

European

areas

except

United

Kingdom.

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QWY21222B

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All

European

areas

except

United

Kingdom

and

for

Australia.

|

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|

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All

European

areas

except

United

Kingdom.

E34

QJP1921TN

3

Post

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

's

0861366

packenaii

older

“Black

Type”

£22

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Power

Cord

E35

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|

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ees

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r

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For

All

European

areas

except

United

Kingdom

and

for

Australia,

|

*For

All

European

areas

except

United

Kingdom.

£36

QJP1922TN

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For

Australia.

3

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|

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9

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671

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ae

Rael

“Silver

Type”

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

3

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All

European

areas

except

United

Kingdom.

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ni

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Africa

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BL

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;

|

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For

Australia.

3For

All

European

areas

except

United

Kingdom.

P2

QPA0459

Cushion-A

nb

XAMQ22P100N

|

Pilot

Lamp

“Black

Type”

£39

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Holder

P3

QPA0460

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‘

,

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

E23

QMA3670

Volume

Angle

For

All

European

areas

except

United

Kingdom.

P4

XZB16X22A05

|

Poly

Bag

a

seinen

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a

aos

sa

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For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

RS-M7

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type

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A

C31,

32

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|

except

United

Kingdom

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cower

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34

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-

:

39,40

|

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-

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

For

Australia.

NOTE:

SPECIFICATIONS

©

*

Input

level

control---

MAX

TERMINATIONS

(BOTTOM

VIEW)

5

$1-1~$1-18

-Record/playback

select

switch

(shown

in

playback

position).

fi

.

$2-1~S82-6--

-

Equalizer

bias

select

switch.

:

ait

.

7

1---CrO2,

2--:Fe-Cr,

3---

Normal.

Playback

S/N

ratio

More

than

45

dB

3.

$3-1,

$3-2

-.-

-

Dolby

IN/OUT

select

switch

(shown

in

OUT

position)

H

4,

$4-1~S4-4..........

Input

select

switch.

Tast

tape

---

QZZCFM

33

|

1--MIC,

2+

LINE

IN.

1

-

Por

ON/OFF

switch.

a 3

[|

12°

“Motor

enuting

switch,

Overall

distortion

=]

-

AC

power

voltage

select

switch.

8

|

Playback

gain

adjustment

VR.

Test

tape

Less

than

3%

(Normal)

c

H

Recording

gain

adjustment

VR.

QZZCRA

for

Normal

sae

:

a

10.

VR7,

VR8---

-

Input

level

control.

Less

than

4%

(Fe-Cr,

CrOz)

11.

VR501,

VR502------

Level

meter

adjustment

VR.

++

Q7ZCRX

for

CrO2

12.

L3,L4

-

Recording

equalizer

adjustment

coil.

13.

L5,

L6--

«Bias

current

adlceonant

coil.

a

QZZCRY

for

Fe-Cr

14.

Resistor

values

are

in

ohms

(Q),

1/4

watt

unless

specified

otherwise.

K=1,0000.

*

15.

Capacitor

values

are

in

microfarads

(uF)

unless

specified

otherwise.

Overall

S/N

ratio

More

ee

’

P

=Pico-farads.

iat

G

16.

The

mark

(W)

shows

test

point.

e.g.

V=Test

point

1.

Test

tape

QZZCRA

(without

N

ite

17.

All

voltage

values

shown

in

circuitry

are

under

no

signal

condition

with

volume

@

control

at

minimum

position.

For

measurement,

use

VTVM.

NOTE:

A

indicates

that

only

parts

specified

by

the

manufacturer

be

used

for

safety.

Ref.

No.

Part

No.

Part

Name

&

Description

TRANSFORMERS

17,8

QLT2D26X

Headphone

Transformer

7401

|

A]

QLPD33ELC

Power

Transformer

For

All

European

areas

except

United

Kingdom.

|

Aj

QLPN48ELC

n

«For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

|

A}

QLPA47ELC

"

3

For

Australia.

COILS

L1,2

QLM9Z7

MPX

Filter

L3,4

QLQM0333

Record

Equalizer

Coil

L5,6

QLQC0331

Bias

Trap

Coil

L301

QLBO188

Bias

Oscillation

Coil

SWITCHES

$1

QSSI205T

Slide

Switch

(Record/Playback

Select)

$2

QES1490

Lever

Switch

(Tape

Select)

“Silver

Type”

QES1485

"

“Black

Type”

$3

QES1492

Lever

Switch

(Dolby

IN/OUT

Select)

“Silver

Type”

QES1487

”

“Black

Type”

$4

QES1491

Lever

Switch

(Input

Select)

“Silver

Type”

QES1486

”

“Black

Type”

$5

DB]

A}

QSW2228A

Power

Switch

3¢For

All

European

areas

except

United

Kingdom

and

for

Australia.

|

A|

QSW1206AA

"

x

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

S6

QSB0186

Leaf

Switch

(Muting

Switch)

$7

A}

QSR1409H

AC

Power

Voltage

Select

Switch

3

For

All

European

areas

except

United

Kingdom.

(|

A|

QSR1407H

"

3«

For

Asia,

Latin

America,

Middle

East

and

Africa

areas.

QJA0257H

QEJ5002S

QJA0249C

JACKS

Microphone

Jack

Line

IN/OUT

(DIN)

Headphone

Jack

WIRING

CONNECTION

DIAGRAM

7

|

AC

POWER

CORD

S5:

POWER

SWITCH

’

'

1

'

1

'

|

bh

-

——

-

—

-

——

-

—

-

PILOT

LAMP

0401_2SC1383S

8}

16.7

V

Ch.

V

TRANSFORMER

gay

(2)

°

$7:

AC

VOLTAGE

SELECT

SWITCH

For

all

European

areas

except

United

Kingdom

LEVEL

METER

CIRCUIT

HEADPHONES

CIRCUIT

BOARD

LED

CIRCUIT

BOARD

D038

RECORD/PLAYBACK

HEAD

iCl_avitani22

1]2.04V

210.59.

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4

RED

04

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IC4

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V

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a

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3V

v

9

5.35V

3

4

1

2

3}

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6}

7]

a

—

S6:

MOTOR&

MUTING SWITCH

NOTE:

The

circuit

shown

in

red

on

the

conductor

is

B

circuit.

Values

indicated

in

are

DC

voltage

between

the

chassis

and

electrical

parts.

POWER

TRANSFORMER

i

S5:

POWER

|

SWITCH

a

es

E

i

:

-

a

2 ?

:

-

For

Australia.

8

RS-M7Z7

RS-M7

EXPLODED

VIEWS

2

—-M81

Cy

Part

No.

Part

Name

&

Description

|

M36

QMR1622

Stop

Rod-A

MECHANICAL

PARTS

M37

QMR1621

Eject

Rod-A

Mi

QML2898

Pause

Lock

Plate

abe

OuESOS8

clea

QML3287

Brake

Lever

M2

QMK1612

Head

Base

Plate

M40

0DB0240

Counter

Belt

M3

QXK2051

Upper

Base

Plate

Assembly

M6

QXL1057

Pressure

Roller

Lever

Assembly

M7

Qxi0098

Takeup

Idler

Assembly

ne

iss

Seine

M8

QML3051

Erase

Safety

Lever

M10

QDK1012

Steel

Ball

2.5¢

M47

QXR0403

Eject

Rod-B

M11

QMF2063

Chassis

Cover

M47-1

QBT1619

Idler

Spring

M12

QMA3169

Shaft

Reinforcement

Angle

M48

QMA3414

Motor

Angle

M13

QXFO131

Flywheel

Assembly

M51

QXG1031

Damper

Gear

Assembly

M55

QBN1515

Connection

Spring

QXH0239

Flywheel

Retainer

Assembly

M56

QBC1278

Head

Spring

M15

MMC6A2HYA

Motor

M57

QBP1841

Head

Base

Plate

Pressure

Spring

M16

QXP0572

Motor

Pulley

Assembly

M58

QBN1488

Pressure

Roller

Spring

M16-1

XSN2+3

Screw

®2x3

M17

QDB0236

Flywheel

Belt

M59

QBN1481

Playback

Spring

Mls

QXL1136

Fast

Forward

Arm

Assembly

M60

QBN1480

Pause

Lock

Spring

M18-1

QBN1517

Fast

Forward

Spring

M62

QBC1193

Safety

Lever

Spring

M18-2

QBN1559

Fast

Forward

Arm

Spring

M63

QBN1513

Idler

Spring

M18-3

QMc0080

Collar

M65

QBN1574

Brake

Spring

M19

QML3040

Cam

Lever

M66

QBC1344

Back

Tension

Spring

M67

QBN1555

Pause

Spring

QXD0067

Takeup

Reel

Table

Assembly

M68

QBP

1664

Operation

Rod

Spring

M21

QXxD0084

Supply

Reel

Table

Assembly

M70

QBP1662

Lock

Rod

Spring

M22

}

QXL1055

Auto-Stop

Lever

Assembly

M71

QBT1682

Lock

Holding

Spring

SPECIFICATIONS

M23

|

QDG1096

Cam

Gear

M24

QXG1026

Auto-Stop

Gear

Assembly

M75

BW

2008

Snap

Washer

M25

QXL1037

Gear

Lever

Assembly

M76

ewcnte

”

Pressure

of

pressure

roller

350

£50

gr

M26

QML3042

Auto-Stop

Obstruction

Lever

M77

XUB4FT

Stop

Ring

C4¢

M27

QML3217

Pause

Lever

M79

QHQ1226

Screw

Takeup

tension

M29

QML3124

Lock

Release

Arm

M80

XSN2+10

Screw

®2X10

M30

QMR1735

Lock

Rod

Assembly

M81

XTN26+58

—_|

Tapping

Screw

@2.6X5

*

Use

cassette

torque

meter

S04

15gr-cm

M82

XTN3+10B

Tapping

Screw

®3X10

+++

QZZSRKCT

M31

QXRO342

Pause

Rod

Assembly

M83

XTN26+8B

Tapping

Screw

®2.6X8

M32

QXRO465

Record

Rod

Assembly

M84

XSN26+3

Screw

@2.6X3

M33

QXR0344

Playback

Rod

Assembly

M85

XTN3+25B

Tapping

Screw

®3X25

Wow

ane

Uuet

0.08%

(WRMS)

M34

QMR1624

Rewind

Rod-A

*

Use

test

tape

---

QZZCWAT

QMR1623

Fast

Forward

Rod-A

M86

QXK2052

Lower

Base

Plate

Printed

in

Japan.

Technics RS-M7 User manual

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