Sony Mega bass cfs-720 User manual

SERVICE

MANUAL

CFS-720

US

Model

Canadian

Model

E

Model

Name

Using

Similar

CFS-710

Mechanism

Tape

Transport

MF-730PB-78D

Mechanism

Type

MF-710RP-75D

SPECIFICATIONS

AUDIO

POWER

SPECIFICATIONS

POWER

OUTPUT

AND

TOTAL

HARMONIC

DISTORTION

With

6

ohms

loads,

both

channels

driven

from

70

—

15,000

Hz;

rated

5

watts

per

channel

minimum

RMS

power,

with

no

more

than

10%

total

harmonic

distortion

in

AC

operation.

OTHER

SPECIFICATIONS

Frequency

range

FM

87.6

—

108

MHz

AM

530

—

1710

kHz

Antennas

FM:

Telescopic

antenna

AM:

Built-in

ferrite

bar

Recording

system

4-track,

2-channel

stereo

Frequency

response

70

~—

10,000Hz

Speakers

Full-range:

12cm

(4°/,

inches)

dia.

x

2

Power

outputs

(Canadian

model)

Full-range

speakers:

5W

+

5W

(at

10%

harmonic

distortion)

in

DC

operation

inputs

MIX

MIC

input

jack

(mono

minijack)

(1)

sensitivity

3.9mV

for

low

impedance

microphone

CD/LINE

IN

jack

(stereo

phono)

(2)

input

impedance

50

kilohms,

sensitivity

0.43V

Outputs

Headphones

jack

(stereo

minijack)

for

16

—

68

ohm

impedance

headphones

Power

requirements

120V

AC,

60

Hz

9V

DC,

six

size

D

(R20)

batteries

Power

consumption

22W

in

AC

operation

Battery

life

Sony

New

Super

SUM-1

(NS)

Approx.

5.5

hours

Sony

AM1

(N)

Dimensions

Approx.

681

x

215

x

225

mm

(w/h/d)

(26%

x

8'4

x

874

inches)

not

incl.

projecting

parts

and

controls

Weight

Approx.

6.5

kg

(14

Ib

5

02)

incl.

batteries

Accessory

supplied

AC

power

cord

(1)

Design

and

specifications

subject

to

change

without

notice.

RADIO

CASSETTE-CORDER

SONY.

CFS-720

TABLE

OF

CONTENTS

Section

Title

Page

Section

Title

Page

1.

GENERAL

5-2.

Printed

Wiring

Boards

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

cess

eee

a

1-1.

Location

and

Function

of

Controls

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

3

5-3.

Schematic

Diagram

—Tuner

Section—..........

15

5-4.

Schematic

Diagrams

—Audio

Section—

........

19

2.

DISASSEMBLY

.

2-1.

Removal

of

Cassette

Lid

Assy

......0...eeeee

eee

4

6.

EXPLODED

VIEWS

|

6-1.

Cabinet

(Rear),

Speaker

Section

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

22

3.

MECHANICAL

ADJUSTMENTS....................

5

6-2.

Cabinet

(Front)

Section

...........0.e

cece

eens

23

6-3.

Deck

A

mechanism

Section

(1)

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

24

4.

ELECTRICAL

ADJUSTMENTS

6-4.

Deck

A

mechanism

Section

(2)

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

25

4-1.

Tape

Recorder

Section

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

0...

cece

eee

6

6-5.

Deck

A

mechanism

Section

(3)

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

26

B20:

«

~

RACIO

SECLION

paket

Praia

d

wendlen

de

sewed

8

6-6.

Deck

B

mechanism

Section

(1)

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

27

6-7.

Deck

B

mechanism

Section

(2)

..............7.

28

5.

DIAGRAMS

5-1.

Semiconductor

Lead

Layouts

...............0

10

7.

ELECTRICAL

PARTS

LIST

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

29

SAFETY

CHECK-OUT

After

correcting

the

original

service

problem,

3.

Measuring

the

voltage

drop

across

a

resistor

by

means

of

a

VOM

or

battery-operated

AC

volt-

meter.

The

“‘limit”

indication

is

0.75

V,

so

analog

meters

must

have

an

‘accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

of

a

passive

VOM

that

is

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

a

2V

AC

range

are

suitable.

(See

Fig.

A)

perform

the

following

safety

check

before

releasing

the

set

to

the

customer:

Check

the

antenna

terminals,

metal

trim,

“metallized”

knobs,

screws,

and

all

other

exposed

metal

parts

for

AC

leakage.

Check

leakage

as

described

below.

LEAKAGE

TEST

The

AC

leakage

from

any

exposed

meta!

part

to

earth

ground

and

from

all

exposed

metal

parts

to

any

exposed

metal

part

having

a

return

to

chassis,

must

not

exceed

0.5mA

(500

microampers).

Leakage

current

can

be

measured

by

any

one

of

three

methods.

To

Exposed

Metal

Parts

on

Set

1.

A

commercial

leakage

tester,

such

as

the

Simpson

229

or

RCA

WT-540A._

Follow

the

manufacturers’

instructions

to

use

these

instru-

ments.

AC

voltmeter

ee

(0.75

V)

2.

A

battery-operated

AC

milliammeter.

The

Data

Precision

245

digital

multimeter

is

suitable

for

this

job.

Earth

Ground

Fig.

A.

Using

an

AC

voltmeter

to

check

AC

leakage.

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

MARK

A

OR

DOTTED

ATTENTION

AU

COMPOSANT

AYANT

RAPPORT

A

LA

SECURITE!

LINE

WITH

MARK

A

ON

THE

SCHEMATIC

DIAGRAMS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

TO

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUB-

LISHED

BY

SONY.

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

MARQUE

/\

SUR

LES

DIAGRAMMES

SCHEMATIQUES

ET

LA

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

LA

SECURITE

DE

FONCTIONNEMENT.

NE

REMPLACER

CES

COM-

POSANTS

QUE

PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

CE

MANUEL

OU

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

|

CFS-720

SECTION

1

GENERAL

1-1.

LOCATION

AND

FUNCTION

OF

CONTROLS

[1]

Speaker

Display

window

BAND—FM/AM

select

MEMORY

button

FM

STEREO

indicator

[6]MEGA

BASS,

4

band

GRAPHIC

EQUALIZER

(400Hz,

1kHz,

4kHz,

10kHz),

BALANCE

controls

[7]

HIGH

SPEED

DUBBING

button

[8]

VOLUME

control

[9]

Tape

operation

buttons

(deck

A)

mA

STOP/EJECT

>

PLAY

44°

(rightward

fast

winding)

>P

(leftward

fast

winding)

il

PAUSE

<I>

DIR

(direction)

PHONES

(headphones)

jack

(stereo

minijack)

FM/AM

preset

tuning

buttons

12]

TUNING

(+/—)

buttons

f.3]

SENS

(sensitivity)

(DX/LOCAL)

button

(rear)

+10

(a

number

of

ten

figures)

preset

tuning

button

FUNCTION

selector

TAPE/RADIO

OFF:

for

playing

back

a

tape

or

for

recording

from

a

MIX

MIC

(mixing

microphone)

DUBBING:

for

dubbing

RADIO:

for

listening

to

or

recording

a

radio

program

CD/LINE

IN:

for

listening

to

or

recording

an

external

source

connected

to

the

CD/LINE

IN

jacks

16

SPACE

SOUND

button

1.

7/|CD/LINE

IN

jacks

(rear)

MIX

MIC

(mixing

microphone)

jack

(minijack)

(rear)

FM

telescopic

antenna

20|

SPEAKER

terminal

~AC

IN

(AC

power

input)

socket

(rear)

22|OPR/BATT

(operation/battery)

and

REV

(reverse),

FWD

(forward)

indicators

23

DIR

(direction)

MODE

button

24]

Tape

operation

buttous

(deck

B)

mA

STOP/EJECT

e@

REC

(recording)

>

PLAY

4<q

REW

(rewind)

pp

FF

(fast

forward)

T

|

PAUSE

CFS-720

Note:

Follow

the

disassembly

procedure

in

the

numerical

order

given.

2-1.

REMOVAL

OF

CASSETTE

LID

ASSY

SECTION

2

DISASSEMBLY

[)

Push

the

claws.

B

cassette

lid

assy

CFS-720

SECTION

3

MECHANICAL

ADJUSTMENTS

PRECAUTION

1.

Clean

the

following

parts

with

a

denatured-alcohol-

moistened

swab:

record/playback

head

pinch

roller

erase

head

rubber

belts

capstan

idlers

2.

Demagnetize

the

record/playback

head

with

a

head

demagnetizer.

(Do

not

bring

the

head

demagnetizer

close

to

the

erase

head.)

3.

Do

not

use

a

magnetized

screwdriver

for

the

adjustments.

4.

After

the

adjustments,

apply

suitable

locking

compound

to

the

parts

adjusted.

5.

The

adjustments

should

be

perfomed

with

the

rated

power

supply

voltage

unless

otherwise

noted.

6.

Power

supply

voltage:

9V

dc.

Torque

Measurement

(DECK

A)

Forward

Reverse

Fast

(DECK

B)

Forward

Fast

Forward

and

CQ-201B

Rewind

Meter

reading

28—

65g*cm

(0.39

—0.90

oz*inch)

2.5—5.5g¢cm

(0.035

—

0.076

oz*inch)

28—65g-cm

(0.39—0.90

oz*inch)

2.5—5,5g*cm

(0.035

—0.076

oz*inch)

more

than

100g*cm

(more

than

1.39

oz*inch)

95—145g-cm

(1.32—2.01

oz+inch)

Meter

reading

25—50g°cm

(0.35—-0.69

oz*inch)

2—5g*cm

(0.03

—0.07

oz*inch)

65—110g*cm

(0.90

—1.53

ozeinch)

Tape

Tension

Measurement

(DECK

A)

Meter

Reading

more

than

120g

(more

than

4.23

oz)

(DECK

B)

Meter

Reading

more

than

170g

CQ-4

aes

(more

than

6.00

oz)

Head

Height

Adjustment

1.

Use

CQ-009C

(Part

No.

8-909-708-01)

or

prepare

an

adjust-

ment

cassette

as

shown

below.

C-90

Cut

out

hatched

tape

cassette

portions.

2.

In

playback

mode

and

viewing

from

the

front,

adjust

the

head

heights

to

eliminate

tape

curl

and

tape

twist

at

portions

shown

by

arrows.

DECK

A

playback

head

e

head

height

adjustment

shim

3-578-138-01

0.1

3-578-138-11

0.2

-

DECK

B

record/

playback

head

r

SS

7

[

[Pan

Ne

[4]

7

3-578-138-01

|

0.1

a

®

|

3-578-138-11

|

0.2

3-578-138-21

A

3-331-108-01

|

0

head

height

adjustment

shim

CFS-720

SECTION

4

ELECTRICAL

ADJUSTMENTS

4-1.

TAPE

RECORDER

SECTION

e

Standard

Input

Level

Input

terminal

LINE

IN

input

signal

level

0.44V

(—5dB)

e

Standard

Output

Level

Output

terminal

SP

OUT

HP

OUT

are

a6)

|

0250

(1088)

e

Test

Tape

[tweet

dCs

«|

P-4-A063

6.3kHz,

—10dB

head

azimuth

adjustment

WS-48A

3kHz,

0dB

tape

speed

adjustment

@

Switch

and

Controls

Position

GRAPHIC

EQUALIZER

controls

(RV

G31=2335).

vate

ecndvereoetenaeg

we

mechanical

mid

VOLUME

control

(RV301)

........

2...

cee

eee

max.

SPACE

SOUND

switch

(S305)......

0...

cece

eee eee

OFF

Head

Azimuth

Adjustment

Parform

adjustments

in

both

forward

and

reverse

playback

modes

for

DECK

A.

Output

level

of

both

forward

and

reverse

playback

modes

should

match

together.

Procedure

:

1.

Mode:

playback

test

tape

P-4-A063

VTVM

(6.3kHz,

—

10dB)

OTe:

Phones

jack

2.

Turn

the

adjustment

screw

for

the

maximum

output

levels.

If

these

levels

do

not

match.

turn

the

adjustment

screw

until

both

of

output

levels

match

together

within

2dB.

L-CH

peak

R-CH

peak

sere

SS

aie

position

L-CH

R-CH

alg

peak

3.

Phase

Check

Mode:

playback

test

tape

P-4-A063

L-CH

320

oscilloscope

Phones

jack

R-CH

Screen

Pattern

in

phase

45°

90°

135°

180°

see

—

Yeti,

seers”

good

wrong

Note:

Finish

the

screw

adjustment

with

a

turn

in

the

clock-

wise

direction.

After

the

adjustment,

apply

suitable

locking

com-

pound

to

the

adjustment

screw.

Adjustment

Location

:

forward

reverse

adjustment

screws

adjustment

screw

Tape

Speed

Adjustment

Procedure

:

©

Perform

high

speed

adjustment

before

normal

speed

adjust-

ment.

Mode:

playback

test

tape

WS-48A

(3kHz,

OdB)

frequencny

counter

Phones

jack

Test

Adjustment

Frequcency

Speed

(TP101)

aed

counter

|

oRven

|

High

short

5,685

—

5,715Hz

"

RVI

Taf

Rven

Normal

open

es

Frequency

difference

between

the

begining

and

the

end

of

the

tape

should

be

within

+1.5%.

2,970

—

3,000Hz

Adjustment

Location

:

test

(TP101)

high

speed

:

short

normal

speed

:

open

ih

aly

MODE

DECK

B

7

ouenntmndmmmmntnenn

:

F

:

NORMAL

HIGH

—

right

side

view

—

SPEED

RV374,

RV373

DECK

A

rrr

AN,

NORMAL

HIGH

SPEED

RV372,

RV371

A

C)

4-2.

RADIO

SECTION

e

FM

Section

Setting

:

BAND—FM/AM

selecting

button:

FM

rf

signal

generator

telescopic

antenna

input

terminal

22.5kHz

frequency

deviation

by

400Hz

signal

output

level:

as

low

as

possible

-@

AM

Section

Setting

:

BAND-—FM/AM

selecting

button:

AM

rf

signal

generator

Put

the

lead-wire

antenna

close

to

the

set.

30%

amplitude

modulation

by

400Hz

signal

output

level

:

as

low

as

possible

VTVM

(range:

0.5—5V

ac)

Phones

jack

e@

Repeat

the

procedures

in

each

adjustment

several

times,

and

the

frequency

coverage

and

tracking

adjustments

should

be

finally

done

by

the

trimmer

capacitors.

@

Remove

telescopic

antenna

in

FM

section

adjustments.

FM

FREQUENCY

COVERAGE

ADJUSTMENT

reading

on

digital

voltmeter

adjustment

frequeny

part

indicator

L3

8+0.1V

108MHz

87.5MHz

confirm

4.7540.2V

FM

TRACKING

ADJUSTMENT

Adjust

for

a

maximum

reading

on

VT

VM.

AM

IF

ADJUSTMENT

Adjust

for

a

maximum

reading

on

VTVM.

AM

FREQUENCY

COVERAGE

ADJUSTMENT

:

reading

on

adjustment

SS we

frequeny

digital

ae

part

:

indicator

voltmeter

1.8+0.1V

530kHz

1710kHz

9.5+0.1V

Adjustment

Location

:

main

board

telescopic

antenna

input

terminal

FM

rf

signal

generator

.

°

VCO

Adjustment

Procedure

RV1

vco

ADJ

us

>»

—

li

S

=o

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4i2w2

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L2

FM

TRACKING

ADJ

:

no

modulation

0.1V

(100dB)

Modulation

Output

level

:

Carrier

frequency

:

98MHz

Adjust

RV1

for

76kHz+500Hz

reading

on

the

frequency

Connect

frequency

counter

as

shown

below.

counter.

Tune

the

set

to

983MHz.

1

2.

3

ANTI

TELESCOPIC

ANTENNA

telescopic

antenna

input

terminal

ADJ

O

+

(AM)

digital

voltmeter

s

2

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1-636

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basses

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frequency

counter

(VCO)

SECTION

5

DIAGRAMS

5-1.

SEMICONDUCTOR

LEAD

LAYOUTS

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DTC114ES

DTC114YS

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DTC114TS

2SA1175-HFE

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2S8C2786-L

28C2787

letter

side

RB441QT-77

RD11ES-B1

RD6.8ES-B2

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cathode

2SA952

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28C1815-GR

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cathode

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2SD773-34

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cathode

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®

The

mechanical

parts

with

no

reference

number

in

the

exploded

views

are

not

supplied.

@

The

construction

parts

of

an

assembled

part

are

indicated

with

a

collation

num-

ber

in

the

remark

column.

e

{tems

marked

''*

”

are

not

stocked

since

they

are

seldom

required

for

routine

service.

Some

delay

should

be

antici-

pated

when

ordering

these

items.

6-1.

not

supplied

Ref.No

Part

No.

Description

SECTION

6

EXPLODED

VIEWS

Due

to

standardization,

parts

with

part

number

suffix

-XX

and

-X

may

be

dif-

.ferent

from

the

parts

specified

in

the

components

used

on

the

set.

CABINET

(REAR),

SPEAKER

SECTION

1

3-359-261-01

EMBLEM,

SONY

2

3-359-295-01

CASE

(L),

REAR

SP

3

3-359~-294-01

CASE

(R),

REAR

SP

4

7-685-649-79

SCREW

+BVTP

3X14

TYPE2

N-S

5

7-685-648-79

SCREW

+BTP

3X12

TYPE2

N-S

6

7-685-646-79

SCREW

+BVTP

3X8

TYPE2

N-S

7

3-359-276-01

SPRING

(-),

BATTERY

COIL

8

3-359-275-01

SPRING

(PLUS

TERMINAL)

9

*

3-363-248-01

SPRNG

(ANT

TERMINAL)

10

3-362-337-01

CABINET

(REAR)

11

7~685~155-19

SCREW

+P

3X40

TYPE2

NON-SLIT

12

7-682-548-09

SCREW

+B

3x8

13

3-359-277-01

SPRING

(+,-),

BATTERY

COIL

14

3-359-285-01

LID,

BATTERY

CASE

15

A-3244-339-A

HANDLE

ASSY

16

X-3362-174-1

CASE

SUB

ASSY,

FRONT

SP

Remark

Ref.No

Part

No.

17

*

3-701-946-26

18

3-362-335-01

19

3-362-334-01

901

1-533-217-31

902.

:*

A-3261-273-A

902

*

A-3271-539-A

903.

*

1-636-204-11

904

1-556-650-00

ANT1

1-501-383-21

F361

A\.1-532-746-11

10304

SP901

SP902

8-759-822-51

1-544-309-11

1-544~-309-11

T361

A\.1-450-033-11

T361

A\.1-450-243-11

The

mark

components

identified

‘by

or

dotted

line

with

mark

are

critical

for

safety.

Replace

only

with

part

number

specified.

Les

composants

identifiés

par

une

marque

sont

critiques

pour

la

sécurité.

Ne

les

remplacer

que

par

une

piéce

portant

le

numéro

spécifé.

not

supplied

Description

Remark

(Canadian)...

LABEL

(4A

125V),

FUSE

SPRING,

TORSION

(SMALL)

SPRING

(PLUS

TERMINAL

SMALL)

(Canadian)....

HOLDER,

FUSE

(Canadian)....

MOUNTED

PCB,

POWER

(US,E)....MOUNTED

PCB,

POWER

PC

BOARD,

BATT

CORD,

SPEAKER

ANTENNA,

TELESCOPIC

(Canadian)....FUSE,

GLASS

TUBE

(44/125V)

IC

LA4620

SPEAKER

(US,

E}....

TRANSFORMER,

POWER

(Canadian)....

TRANSFORMER,

POWER

CFS-720

6-2.

CABINET

(FRONT)

SECTION

93

67

906

69

not

supplied

91

[Pes

supplied

26

Za

89

VY

912

Ref.No

Part

No.

51

52

53

54

55

36

57

58

59

60

61

62

63

64

65

66

67

68

69

70

7

72

73

74

75

76

77

78

A-3247-460-A

A-3247-461-A

3-359-243-01

3-359-270-01

3-359-272-01

7-685-646-79

3-362-336-02

3-359-245-01

3-359-230-01

3-359-231-01

3-359-229-01

3-359-232-01

*

3-359-211-01

7-621-773-86

7-682-546-04

7-685-649-79

7-685-104-19

3-359-223-01

7-687-233-11

3-359-299-01

3-356-157-01

3-359-224-01

*

3-359-212-01

3-359-204-61

3-359-233-01

3-359-228-01

*

3-359-281-01

7-621-770-67

Description

LID

(L)

ASSY,

CASSETTE

LID

(R)

ASSY,

CASSETTE

HOLDER,

CASSETTE

(A)

HOLDER

(B),

CASSETTE

FOOT

(CABINET

FRONT)

SCREW

+BVTP

3X8

TYPE2

N-S

CABINET

(FRONT)

BUTTON

(STOP)

BUTTON

(PLAY)

BUTTON

(FF)

BUTTON

(REW)

BUTTON

(PAUSE)

SHAFT,

MD

BUTTON

SCREW

+PTT

2.6X4

(S)

SCREW

+PTT

3X5

(S)

SCREW

+BVTP

=

3X14

TYPE2

N-S

SCREW

(2X6),

+

PTPWH

BUTTON

(DIR

MODE)

SCREW

(+

PTPWH)

(2.6X6)

SPRING

(CASSETTE

R),

TORSION

DAMPER

BUTTON

(DIRECTION)

RETAINER,

D

KNOB

(VOLUME)

BUTTON

(STOP)

BUTTON

(REC)

LEVER

(REC)

SCREW

+PTT

2.6X6

(S)

LCD701

Ref.No

Part_No.

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

97

905

906

907

908

909

910

911

912

$405

LCD701

3-359-209-01

3-361-707-01

3-361-708-01

3-361-710-01

3-361-709-01

3-359-

207-01

3-359-249-01

3-362-332-01

3-322-317-01

3-322-316-01

3-359-222-01

*

3-359-286-01

3~359-

205-01

9-911-844-XX

3-362-333-01

7-685-

647-79

*

1-636-202-11

*

1-636-200-11

*

1-636~-203-11

*

A-3261-246-A

#

A-3261-272-A

*

1-636-199-11

1-616-098-21

*

1-636-201-11

*

A-3287-083-A

1-570-943-11

1-809-119-11

not

supplied

Description

SPRING

(CASSETTE),

TORSION

BUTTON

(PLAY)

BUTTON

(REW)

BUTTON

(FF)

BUTTON

(PAUSE)

KNOB

(FUNCTION)

BUTTON

(TU)

WINDOW,

LCD

LEVER,

REC

BRACKET,

REC

LEVER

KNOB

(GEQ)

CHASSIS

(G)

BUTTON

(T)

SPACER,

LEAF

SHAFT,

RELAY

SCREW

+BVTP

=

3X10

TYPE2

N-S

PC

BOARD,

PHOTO

PC

BOARD,

SW

(A)

PC

BOARD,

LED

(US,E)....

MOUNTED

PCB,

MAIN

(Canadian)....

MOUNTED

PCB,

MAIN

PC

BOARD,

GEQ

PC

BOARD,

HEAD

CHANGE

SWITCH

PC

BOARD,

SW

(B)

MOUNTED

PCB,

DISPLAY

SWITCH,

SLIDE

(HEAD

SELECT)

DISPLAY

PANEL,

LIQUID

CRYSTAL

Remark

CFS-720

(MF-730PB-78D)

101

Ref.No

Part

No.

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

*

3-322-702-01

7-685-105-19

3-831~-441-11

3-322-526-01

3-322-527-01

3-322-691-01

7-687-233-11

3-330-605-01

3-328-103-01

3-322-522-01

3-545-715-00

3-530-260-00

*

3-330-606-01

3-307-363-00

*

3-322-665-11

3-307-948-01

3-330-827-01

X~3330-601-1

3-701-437-01

X-3322-540-1

3-701-437-11

3-322-566-01

108

Description

RETAINER

(B),

LEVER

TPG

+P

2X8,

TYPE

2,

NON-SLIT

CUSHION

(T)

SPRING,

TENSION(POWER

TENSION)

SPRING,

TENSION

SPRING,

TENSION

SCREW

(+

PTPWH)

(2.6X6)

SPRING,

TENSION

SPRING,

TENSION

SPRING,

TENSION

WASHER

SPRING,

TENSION

LEVER,

SELECTION,

S.OFF

CLAW

(N),

REEL

BRACKET,

ATS

WASHER,

NYLON

LEVER

(B),

GEAR

LOCK

FLYWHEEL

(NR)

ASSY

WASHER

DETECTION

BLOCK

ASSY

WASHER

BEARING,

PULLEY

Ref.No

Part

No.

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

3-322-533-01

3-657-035-XX

3-322-524-01

*

3-322-519-01

7~685- 134-19

3-330-833-01

3-578-223-21

3-322-534-01

3-330-826-01

3-322-508-01

3-307-447-00

3-321-541-01

3-322-659-01

3-322-556-01

3-322-553-01

X-3322-507-1

3-322-676-01

3-321-531-01

3-307-362-00

X~3321-501-1

3-322-660-01

Remark

BELT,

CAPSTAN

BELT,

DETECTION

SPRING

RETAINER,

THRUST

SCREW

(+

PTPWH)

(2.6X8)

LEVER

(C),

OA

WASHER,

NYLON

SPRING

LEVER

(D),

OA

GEAR,

REEL

CLAW

(R),

REEL

SPRING,

COMPRESSION

WASHER

(A)

GEAR,

FR

GEAR,

CAM

FLYWHEEL

(R)

ASSY

SPRING

(S),

COMPRESSION

SPRING,

COMPRESSION

CAP,

REEL

BUSHING

ASSY,

REEL

TABLE

WASHER

(8B)

6-4.

DECK

A

MECHANISM

SECTION

(2)

(MF-730PB-78D)

Ref.No

Part

No.

151

152

153

154

155

156

157

158

159

160

161

162

163

164

*

3-322-587-01

*

3-330-604-01

3-322-689-01

X-3330-610-1

3-322-555-01

3-322-577-01

*

3-322-517-01

X~-3322-505-1

3-322-578-01

*

3~330-829-21

*

3-322-515-21

*

3-322-585-21

3-322-693-01

3-322-520-01

a

WD

at

Description

Remark

PLATE

(B),

LOCK

PLATE

(C),

LOCK

RING

LEVER

(R)

ASSY,

SHUT

OFF

LEVER

(£),

SHUT

OFF

SPRING

LEVER,

AMS

LEVER

ASSY,

FR

SPRING

LEVER

(C),

PAUSE

BUTTON

LEVER,

REW

BUTTON

LEVER,

FF

BUTTON

SPRING,

TENSION

SPRING,

TENSION

165

166

167

168

169

170

171

172

173

174

175

176

177

*

3-322-584-21

#

3-322-591-51

%*

3-322-583-21

3~322-528-01

*

3~322-589-01

3-322-579-01

*

3-322-586-01

3-322-513-01

3-570-615-00

3-339-312-01

3-343-

146-01

3-322-576-01

*

X-3339-320-1

|

CFS-720

Remark

Description

LEVER,

PLAY

BUTTON

LEVER,

REC

BUTTON

LEVER,

STOP

BUTTON

SPRING,

TENSION

LEVER,

SWITCH

SPRING

LEVER,

DIRECTION

COLLAR

POLY-WASHER

(DIA.1.2)

LEVER,

POWER

SW

GEAR

(A),

FWD

SPRING

ARM

ASSY

(M),

FWD

GEAR

CFS-720

|

6-5.

DECK

A

MECHANISM

SECTION

(3)

(MF-730PB-78D)

206-—

on

Be.

ADT

|

oa

205

(2)

)

3

Pr

|

232

TL

8—218

>

214

234—

=)

7

ZA

236

¢

930-~

L

Ref.No

Part

No.

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

Description

Remark

Ref.No

Part

No.

3-330-633-01

SPRING,

TENSION

221

3-701-443-11

A~-3102-113-A

CHASSIS

ASSY,

MECHANICAL

222

*

3-322-590-02

3-322-701-01

LEVER

(B),

EJECT

223

3-322-514-01

*

X-3326-605-1

CHASSIS

(B)

ASSY,

HEAD

224

3-340-277-01

3-703-597-41

PINCH

ROLLER,

STANDARD

225

7-685-

105-19

3-307-948-01

WASHER,

NYLON

226

=.

3-701-437-01

3-326-623-01

BRACKET,

HEAD

227

3-322-528-01

7-621-772-20

SCREW

+B

2X5

228

3-359-263-01

3-326-625-01

RETAINER,

PC

BOARD

229

7-621-770-87

7-688-001-01

W

2,

SMALL

230

*

3-337-892-11

7-623-505-01

LUG,

2

231

*

3-322-704-01

3-326-627-01

SPRING,

COMPRESSION

232

3-578-138-01

7-627-552-37

SCREW,PRECISION

+P

1.7X3

232

3-578-138-11

3-326-621-01

SHAFT,

HEAD

FIXED

233

X-333-061-61

3-326-620-01

SPRING

234

3-330-642-01

7-621-255-65

SCREW

+P

2X10

235

3-326-372-01

7-627-851-27

SCREW,PRECISION

+P

1.4X5

913.

*

1-602-735~-12

3-322-531-01

SPRING,

COMPRESSION

HP901

1-543-389-41

3-326-628-01

ARM,

AZIMUTH

M401

—-1-541-631-11

3-326-622-01

RETAINER,

AZIMUTH

PM401

1-454-355-00

Remark

Description

WASHER

LEVER,

DIRECTION

RELEASE

LINK

(A)

SPRING

(M)

TPG

+P

2X8,

TYPE

2,

NON-SLIT

WASHER

SPRING,

TENSION

LEVER,

MANUAL

BUTTON

SCREW

+P

2.6X5

SPRING

GUIDE,

WIRING

SHIM

(T

=0.1)

SHIM

(T

=

0.2)

PULLEY

(W),

MOTOR

WASHER,

CLAMP

SPRING

(C)

PC

BOARD,

PLUNGER

HEAD,

MAGNETIC

(REC/PB)

(DECK

A)

MOTOR,

DC

(DECK

A)

SOLENOID,

PLUNGER

6-6.

DECK

B

MECHANISM

SECTION

(1)

(MF-710RP-75D)

251

Ref.No

Part

No.

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

3-313-357-00

7-671-112-11

3-558-620-11

3-307-948-01

3-322-659-01

3-313-305-00

3~-313-344-00

3-313-333-00

3-558-708-01

X-3313-311-1

3-313-316-00

7-621-255-35

3-334-717-01

3-313-339-00

*

3-324-221-01

#*

3-332-309-01

7-685-134-19

3-307-948-41

3-701-438-11

3-318-203-71

X-3319-945-1

3-703-597-41

3-313~-340-00

7-621-255-55

Description

Remark

CLAW,

REC

PREVENTION

BALL,

STEEL

GEAR,

REWIND

WASHER,

NYLON

WASHER

(A)

TABLE,

REEL,

SUPPLY

SPRING,

COMPRESSION

CLAW,

REEL

WASHER,

STOPPER

CHASSIS

ASSY

PU

SCREW

(2MMX5),

+

PWH

BRACKET

(M),

HEAD

SPRING

ARM

(DC),

ERASE

HEAD

SPRING

(B)

SCREW

(B2.6),

TAPPING

WASHER,

NYLON

WASHER,

2.5

SCREW

(B1.7X5),

TAPPING

BEARING

ASSY,

CAPSTAN

PINCH

ROLLER,

STANDARD

SPRING,

COMPRESSION

SCREW,

LOCK

595

Ref.No

Part

No.

275

276

277

278

279

280

281

282

283

284

285

286

287

288

HE901

HRP901

M402

7-621-772-40

3-578-

138-01

3-578-

138-11

3-578-

138-21

3-331-

108-01

3-331-108-11

3-331-108-21

3-331-108-31

3-331-108-41

3-313-345-00

A~-3130-031-A

3-701-437-21

3-313-902-11

X-3313-301-0

3-573-464-00

X-3313-307-0

7-621-770-87

3-679-

171-00

A-3133-415-A

X-3330-617-1

1-543-525-11

1-543-319-11

1-541-630-11

ee

er,

eo

—

289

252

§

278

a

e278

-

|

CFS-720

275

_276

‘S

282.

77

eh

i

281

283

258

N

es

Description

Remark

SCREW

+B

2X8

SHIM

(T=0.1)

SHIM

(T

=

0.2)

SHIM

(T

=0.3)

LUG

(T),

SHIM

(7

=0.1)

LUG

(T),

SHIM

(T

=0.2)

LUG

(T),

SHIM

(T=0.3)

LUG

(T),

SHIM

(T=0.4)

LUG

(7},

SHIM

(T=0.5)

SPRING,

COMPRESSION

TABLE

ASSY,

REEL,

TAKE-UP

WASHER

SPRING

BRACKET

ASSY,

T

PULLEY

SPRING,

COMPRESSION

PULLEY

ASSY,

FWD

SCREW

+P

2.6X5

BELT

MOTOR

ASSY

PULLEY

(S),

MOTOR

HEAD,

MAGNETIC

(ERASE)(DECK

B)

HEAD,

MAGNETIC

(REC/PB)(DECK

B)

MOTOR,

DC

(DECK

B)

288,

M402

CFS-720

6-7.

DECK

B

MECHANISM

SECTION

(2)

(MF-710RP-75D)

Ref.No

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

Part

No.

3-313-322-02

3-313-323-00

*

3-313-351-16

*

3-313-352-11

A-3102-112-A

3-313-369-00

3-313-343-00

3-322-691-01

*

3-313-321-00

*

3-313-320-00

3-701-438-01

X-3327-909-2

3-679-171-00

3-356-111-01

7-687-233-11

3-313-349-00

3-313-348-00

*

3~313-381-21

Description

Remark

LEVER

(A),

SHUT

OFF

SPRING

PLATE

(A),

LOCK

PLATE

(B),

LOCK

CHASSIS

ASSY,

MECHANICAL

SPRING,

TENSION

SPRING,

TENSION

SPRING,

TENSION

LEVER,

PREVENTION,

RFR

LEVER,

RCP

WASHER

FLYWHEEL

(G)

ASSY

BELT

HOOK,

SPRING

SCREW

(+

PTPWH)

(2.6X6)

SPRING,

TENSION

SPRING,

TENSION

LEVER

(B),

PAUSE

BUTTON

Ref.No

Part

No.

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

—238—

*

3-313-353-21

*

3-313-354-21

*

3-313-326-26

3-324-222-01

3-313-338-00

3~313-378-01

3-313~-327-00

A-3136-041-B

*

3-313-325-21

3-313-383-01

3-701-438-11

*

3-313-382-01

3-313-331-00

3-558~-708-01

3-313-365-00

3-313-356-00

*

3-313-350-21

Description

Remark

LEVER,

FF

BUTTON

LEVER,

REW

BUTTON

LEVER,

FWD

BUTTON

SPRING

(HIGH

TENSION),

TENSION

SPRING

(A)

SPRING

IDLER

COMPLETE

ASSY,

FR

LEVER,

STOP

BUTTON

CLAW

(B),

EJECT

WASHER,

2.5

RETAINER,

LEVER

SPRING

WASHER,

STOPPER

SPRING,

TENSION

BRAKE

LEVER,

REC

BUTTON

332

Sony MEGA BASS CFS-720 User manual

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