Sony TC-377 Manuel utilisateur

Power

Requirements:

Power

Consumption:

Bias

Frequency:

Track

System:

.

Reel

Size:

Tape

Speed:

Frequency

Response:

19

cm/s

(71/2

ips):

s

ips):

9.5

cm/s

(33/4

ips):

19em/s

(74

19cm/s

(74/,

ips):

19

cm/s

(if,

ips):

9.5

cm/s

(3%

ips):

4.8

cm/s

(1%

ips):

Signal-to-Noise

Ratio:

Distortion:

Wow

and

Flutter:

SONY-00124

AEP

Model

—

_..

AUS

Model

USA

Model

STEREL

SPECIFICATIONS

AC

120V,

60Hz

(Canada,

USA)

AC

100V,

110V, 117V,

125V,

220V,

240V,

50/60

Hz

{E)

AC

110V,

127V,

220V,

240V,

50/60

Hz

(AEP,

AUS)

38W

(Canada,

USA)

48w

(AEP,

E,

AUS)

Approx.

160

kHz

Four

track

two

channel

stereo

and

mono

7"

maximum

19

cm/s

(71/2

ips)

9.5

cm/s

(35/4

ips)

48

cm/s

(17

ips)

SPECIAL

(SONY

SLH

tape)

NAB

.

DIN

20~30,000

Hz

30~24,000

Hz

30~25,000

Hz

+3dB

30~20,000Hz.—=—-—.—«c

40~16,000

Hz

NORMAL

(Standard

tape)

NAB

DIN

20~25,000

Hz

30~20,000

Hz

30~20,000

Hz

+3dB

.

30~17,000

Hz

40~

13,000

Hz

30~9,000

Hz

NORMAL

SPECIAL

52

dB

or

better

55

dB

or

better

1.2%

.

19

cm/s

(71/2

ips):

0.09%

(RMS)

weighted

9.5

em/s

(334

ips):

0.12%

(RMS)

weighted

4.8

cm/s

(17

ips):

0.17%

(RMS)

weighted

Inputs:

Two

MICROPHONE

inputs

Impedance:

fow

impedance

Maximum

sensitivity:

-72dB

(0.2

mV)

Two

LINE

!Nputs

Impedance:

100kQ

:

Maximum

sensitivity:

-22dB

(0.06V)

REC/PB

connector

(AEP,

E,

AUS)

Input

impedance:

3.8k2

—

Outputs:

Two

LINE

OUTputs

;

Load

impedance:

more

than

10kQ

Output

level:

OdB

(0.78

V)

with

100kQ

load

REC/PB

connector

(AEP,

E,

AUS)

Output

impedance:

3.3kQ

HEADPHONE

output

Load

impedance:

8%

Semiconductors:

23

transistors,

5

diodes

Record

Head:

RF140-2902

(7029/1

kHz)

Playback

Head:

PF

140-4202

(1k2/1

kHz)

Erase

Head:

£F18-2902A1

(1.6k0/160

kHz)

Motor:

1C-624H1

(induction

motor)

Dimensions:

418

(w)

x

210

(h)

x

392

(d)

mm

16Y>

(w)

x

85/16

(h)

x

15716

(d)

inches

Weight:

10.6kg,

23Ib

60z

(Canada,

USA)

11.5kg,

25

lb

6oz

(AEP,

E,

AUS)

"SERVICE

MANUAL

TABLE

OF

CONTENTS

Section

Title

,

Page

SPeCiICALION

-

S.csesegccscessciseassousececcadececectetasveabiacsesses

.

oeenecs

osTue

Genta

tusbeaconteensaets

1

OUTLINE

Pets

BlOCK:

“Diagrai

<c.pscse

cise

cc

descsedicesetccvassscconscudesaesocce

ov

cdsicecccvssessbeseotoaded

.

3

1=2:,

External

“Views

..scccccccsssesissiceccscsecseseossecdseseoseecacacdbicssscceocececsvesecsedeces

4

1-35.

“Int€rnial

ViCWS»

“asicesisioss

sesacsetaceadsccssecesscsctesdesascsvcocssdsscecudsosveveucuuuccest

5

2

DISASSEMBLY

oo...

ds

diag

taibaieaca

es

eiheecleiuana

tne

etaeae:

6

3

ADJUSTMENTS

3-1.

Mechanical

Adjustments

shdbbds

Waddedeeesdeesewe

site

iebebeedhds

ces

enbwce

eave

eats

9

3-2.

Electrical

Adjustments/Measurements

...........scssecececcsecceecceecscaconeees

16

3-3.

Power

Frequency

Adaptation

oc.

icceesesssssecesssessssececssensececsesones

28

4

DIAGRAMS

|

4-1,

Level

Diagrams

waccecccccsccecsccceccccceceselecsescscscssceseseeccecusessersucerseacesasaves

29

4-2.

Schematic

Diagram

31

4-3.

Mounting

Diagrams

.

33

4-3-1.

Tape

Select

Switch

Circuit

Board

33

4-3-2.

Power

Supply

Circuit

Board

oo...

eee

cesecesegeceseseteseceeeneeees

33

4-3-3.

Bias

Osc

Circuit

Board

.oo...eeececececccecececececenecececerocseeneenceeees

34

4-3-4.

Record

Amp

Circuit

Board

........cecesssescerererecerersseeseeseees

35

4-3-5.

Playback

Amp

Circuit

Board

......ssssscsscsceeesseensensceteeescsens

36

5

EXPLODED

VIEWS

5-1,

Cabinet

—

top

VicW

~

wieciccsccscsecsesssessesensececesseesecesestsssseecseeneeseeees

37

5-2.

Head

Deck

—

top

view

—

38

5-3.

Amplifier

Chassis

—

top

view

—

39

5-4.

Chassis

—

top

View

—

oiiecccccceccseceesensseserececececeecsneetes

ane

41

Dede:

-

PACKING

cccs2

sbveccweseasseSeannd

svadsscouade

susesdatwued

doinds

tances

teteets

cotooiauacesteseaane

43

6

ELECTRICAL

PARTS

LIST

oui

ceccccssceessesssccecssneecesseeteseseeneesans

44

7

HARDWARE.

cain

sccsiccsssecusteevecccusss

laccaventicesstsccddcscvetesentesdsitvevscsutesacevaceouense

47

Hardware

Nomenclature

ooo...

ccceescssscecssscceeseessscectenensecesnceecsccesceeseneaee

47

When

ordering

replacement

parts,

use

PART

NUMBERS

listed

in

Parts.

List.or

shown

in

EXPLODED

VIEW.

.

Parts

List

reference

numbers

should

not

be

used.

MAJOR

PARTS

LOCATION

‘o

S

a.

-_

=

fe)

J

rs

1-2.

SECTION

1

OUTLINE

BLOCK

DIAGRAM

1-1.

)

(Canada)

SONY

TAPECORDER

TC:

3

OV

GONE

ac

wo.

a)

3

am

a

x

Zz

fe)

1H)

6

I

a

o

F

Ra

ua

ray

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fe)

oO

a

%

isa

OV

GOH:

AC

ww

B

2

:

P

a

wi

2

<

>

uw

os

a

Ps

2

3

2

<q

cy

s

z

o

he

%

z

pr

a3

|

PS

=

4

ae:

o

te

=

ua

re]

Side

Panel

YOLVINDAY

FOVLTIOA

€09~1090

“AYUO

JoUULYO-T

SMOYS

WeIseIp

yooiq

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Llsnray

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3NOHd

--GV3H

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MNIVEAV

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2050

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JIW

YOLVTTIISO

SVIa

NI

£010

ZOLO

1010

av3H

quooay

~~

FP

ed

Z

dW

Lan

INOHdOYIIN

ayoo34

ayoo3¥

ayoosH auooa4

NI

IWNIOA

GHOOFY

INIT

NIT

LINE

OUT”

SONY-00124/DRUCK1

SECTION

2

DISASSEMBLY

1-3.

INTERNAL

VIEWS

2-1.

BIN

Chassis

Front

CA

ET

REMOVAL

function

selector

head

cover

nob

“B3x14

W3

mm

dia—.

,

W3

mm

dia

:

function

selector

head

cover

knob

X-34720-27-0

PAUSE

button

A}

ass‘y,

tention

1-514-231-11

:

F

RECORD

VOLUME

am

ise

¥

switch,

micro;

bias

ose

($108)

.

(Turn

clockwise.)

wae

]

knob

RK

aa

©

ae

ornament,

screw

RK

3x14

1-5

tay

o

-00

ide

MONITOR

washer,

nylon;

3.2mm

dia

‘

139-12

switch,

lever

slide;

:

B3x14

ornament,

screw

1-514-0

(L-CHANNEL)

(S103)

washer,

nylon;

3.2

mm

dia

switch,

micro;

auto

shut-off

(S1

70)

W3

mm

dia

1-514-640-00

jack

insulating

washer

switch,

lever

slide;

MONITOR

(R-CHANNEL)

($104)

1-514-655-31

(E)

1-514-472-21

(AEP,

AUS)

1-516-655-71

(Canada,

USA)

1-514-641-00

aa?

"+

switch,

seesaw,

POWER

(S109)

switch,

lever

slide;

en

ioe

a

lide;

-

:

MIC

ATT

(S117)

TAPE

SELECT

{S102}

Bes

RK

4x50

RK

4x50

Chassis

Rear

;

.

1-117-034-

Be

ae

Qe

a

:

ob

capacitor,

i

a

eae

ee

(C707)

retaining

washer

"2

Oe

washer

1-117-036-22

.

cabinet

rubber washer

capacitor,

1.5

pF

+0.5

uF

250V

metalized

poner

(C707)

(AEP,

AUS,

E.

1-44

1-997-11

(USA)

1-441-944-11

(AEP,

AUS)

1-442-068-00

(Canada)

1-441-959-00

(E)

transformer,

power

(T7017)

X-35180-53-1

complete

circuit

board,

power

supply

Gum-(6

RK

4x45

RK

4x4

8-832-624-22

(AEP,

AUS,

E,

USA)

|

8-832-624-27

{Canada}

retaining

washer

motor,

1C-624H1

‘

retaining

washer

LEVEL

ADJUST

.

cabinet

1-514-643-00

1-514-644-00

switch,

rotary;

muting

switch,

rotary;

equalizer

(S101)

(S107)

ha

back

cover

X-35180-52-1

(Canada,

USA)

X-35181-52-1

(AEP,

AUS,

E)

complete

circuit

board,

playback

amp

A

X-35180-54-1

(Canada,

USA)

X-35181-53-1

(AEP,

AUS,

E)

complete

circuit

board,

bias

ose

X-35

180.

51-1

(Canada,

USA}

rubber

foot

stopper

X-35181-51-1

(AEP,

AUS,

E)

:

?

complete

circuit

board,

‘

:

a

oe

record

amp

:

i :

rubber

foot

(P

4x25

,

ao

SOs

ee

ey

SONY-00124/DRUCK2

SONY-00124/DRUCK3

2-2.

HEAD

DECK

REMOVAL

P

3x6—_,¢

SW

3mm

dia___,._,

W3mm

dia——>"

head

holding

plate

ass’y

P

3x6

SW

3mm

dia

W3mm

dia

PAUSE

stroke

adjusting

plate

CAUTION

(1)

Never

put

the

machine

upside

down

on

the

hard

‘plate

with

the

head

cover

removed,

or

the

of

the

tape

shifter,

the

shut-off

arm

pin,

the

tension

arm

and

others

will

be

bent

by

the

weight

of

the

machine.

If

it

is

necessary

to

put

the

machine

upside

down,

put

it

on

a

soft

cloth

with

the

head

cover

attached.

(2)

Do

not

short-circuit

B*

circuit

to

ground,

or

transistor

Q601

will

be

broken.

(3)

When

removing

PAUSE

button,

turn

it

clock-

wise.

(4)

Turn

on

the

power

switch

after

being

certain

that

the

motor

fan

does

not

touch

anything.

7

|

head

deck

ass’y

-SECTION

3

ADJUSTMENTS

3-1.

MECHANICAL

ADJUSTMENTS

Precaution:

Do

not

use

magnetized

screwdriver

for

adjust-

‘ments,

-

oh

Oe

mS

After

adjustments,

apply

locking

paint

to

the

adjusted

parts.

—

Tension

Regulator

Adjustment

STOP

mode

1.

Loosen

the

adjusting

screw

and

adjust

so

that

the

clearance

shown

is

8

mm

(5f6”)

after

having

been

turned

reel

table

counterclockwise

by

hand.

,

supply

reel

table

tension

regulator

adjusting

screw.

arm

tape

guide

tension

regulator

pe

g}

‘arm

eh

locus

drawn

by

movement

7.5~8mm

erase

head

2.

Tape

should

be

in

contact

with

tension

regu-

lator

uniformly

at

beginning

and

end

portion

of

it.

tension

regulator

tape

tension

regulator

arm

SONY-00124/DRUCK4

Tension

Regulator

Back-tension

Adjustment

FWD

and

FF

modes

:

This

adjustment

should

be

done

after

Tension

Regulator

Adjustment.

o

Use

7”

reel

tape.

in

FWD

mode

45~

559g

;

:

(1.59

~

1.94

oz)

in

FF

mode

15~

20g

(0.53

~

0.71

oz)

stud

‘

“spring

@

é

'

tension

regulator

f

tension

gauge

arm

:

Adjust

by

changing

the

spring

hook

position.

If

necessary,

adjust

by

bending

the

stud

or

perform

the

tension

regulator

adjustment

again.

Pinch

Roller

Pressure

Check

Pinch

Roller

Stroke

Adjustment

STOP

mode

1.

.

1.

Remove

head

deck:

ass’y.

(See

“HEAD

DECK

2:

REMOVAL?”

on

page

7)

.

2.

Put

dummy

capstan

into

capstan

bearing

and

be

sure

that

the

‘clearance

between

pinch

levers

3,

@®

and

is

approx.

0.5mm

(1/64").

pinch

lever

Remove

head deck

(See

page

7).

Loosen

adjusting

screw

@

so

that

pinch

roller

shaft

comes

in

contact

with

retractive

lever

at

position

@)

in

STOP

mode.

Fix

adjusting

screw

@

while

pushing

the

joint

lever

in

the

direction

shown

by

arrow.

4..

Put

the

dummy

capstan

into

the

capstan

bearing

and

be

sure

that

pinch

roller

shaft

moves

by

approx,

3~4

mm

(1/g~4/32")

on

the

surface

of

retractive

lever

when

function

selector

knob

is

changed

from

STOP

to

FWD.

5.

Be

sure

that

the

washer

on

pinch

roller

shaft

does

not

come

in

contact

with

©

position

when

function

selector

knob

is

changed

slow-

ly

from

FWD

to

FF.

capstan

pinch

lever

(A)

retractive

lever

head

deck

—back

view—

3.

.

Be

sure

that

the

tension

gauge

indicates

800~

1,000

g

(1

lb

12

0z~21b

30z)

when

the

pinch

roller

is

detached

from

capstan

in

FWD

mode.

adjusting

screw

@)

joint

lever

800

~

1,000g

(1/b

1202

~21b

302)

retractive

lever

head

deck

—back

view—

pinch

roller

shaft

©

Bias

Switch

Position

Adjustment

:

Peay

:

(]

'

Loosen

two

screws

and

adjust

by

positioning

the

.

Oe

ieee

switch.

;

yf

i

é

2

~w)

beer

Switch

should

be

turned

ON

in

FWD

mode,

i

il

sd

pl

seid

and

with

function

selector

knob:

changed

slowly

aid

3~4mm

(e~%fs2")

from

FWD

to

STOP,

record

levers

are

released

after

the

switch

turns

OFF.

lin

FWD

mode)

fin

STOP

mode)

(bias

ose

switch

$108)

Head

deck

bottom

view.

7H

+

PAUSE

Adjustment

:

.

Capstan

Idler

Position

Adjustment

STOP

mode

Me oc

This

adjustment

should

be

done

after

tension

regulator

adjustment.

FWD

mode

.

motor.

pulley

48cem/s

(17

ips)

to

be

flush

:

g

9.5cem/s

(34

ips)

To

contact

= ee

=

“

aa

1.

Adjust

screw

@®

so

that

the

distance

between

?

at

center

SJ

oe

ee

the

end

of

PAUSE

pull

rod

and

PAUSE

stroke

adjusting

plate

is

4~5mm

(%2"~3/6")

in

STOP

mode.

ef

.

flywheel

ese

19cm/s_

to

be

some

(71/2

ips)

Clearance

ty

Be

sure

that

the

clearance

between

pinch

roller

i}

i

|

i

and

capstan

is

more

than

{

mm

(1/32)

when

aay

pulling

the

PAUSE

lever

in

FWD

mode,

and

-|

i

|

1mm

(Yea)

PAUSE

button

is

not

locked

when

pulling

it

|

in

STOP

mode.

1

|

3.

Adjust

screw

(B)

so

that

the

clearance

between

|

tension

regulator

arm

and

PAUSE

leaf

spring

aa

0

is

2~3

mm

(1/,")

in

STOP

mode.

Brake

should

|

fic

tie

z

sy

work,

when

pulling

the

PAUSE

lever

in

FWD

|

c

Pie

leler

Be

a

mode.

:

i

|

loosening

the

screw.

©

|

ae

screw

4~5mm

i

ij

After

adjustment,

capstan

idler

should

not

come

(h2~he”)

PAUSE

pull

rod

in

contact

with

flywheel

and

60

Hz

motor

pulley

in

;

STOP

mode

and

the

clearance

between

capstan

idler

and

50

Hz

motor

pulley

is

more

than

3mm

(}/g")

in

i

STOP

mode.

capstan

idler

|

i

f

i

t

“Idler

Arm

(C)

Stroke

Check

—

FWD

mode

At

4.8

cm/s

(17/g

ips)

tape

speed:

PAUSE

stroke

Head

deck

bottom

view.

adjusting

plate

tension

regulator

PAUSE

lever

arm

Shut-off

Mechanism

Adjustment

STOP

mode

leo

pet

Sl

Hi

1

is

more

than

0.6

mm

(1/4"

iS

aes

ee

|

50Hz

|

clearance

is

more

than

0.6mm

(

Yea")

_|

earance

i

r

(%4")

1

|

L

sot

|

Speed

Selector

Cam

Position

Adjustment

1.

Loosen

two

screws

(A)

and

adjust

by

position-

2.

Adjust

screw

(@)

so

that

the

clearance

between

|

some

clearance

FWD

mode

ing

the

shut-off

lever

holding

plate

ass’y

so

that

shut-off

levers

(B)

and

(H)

is

0.3~0.6mm

}

;

Loosen

the

screw

and

adjust

to

locate

the

idler

the

shut-off

mechanism

is

locked

when

the

(444")

in

STOP

mode.

clearance

between

the

shut-off

arm

end

and

head deck

is

6mm

(15/64”),

and

shut-off

mechanism

is

released

completely

when

it

is

(64).

arm

in

the

stopper

slot

(2)

shown,

at

19

cm/s

tape

speed,

.

clearance

.

capstan

idler

cabinet

a

head

deck

7mm

(3/64)

(bottom

view)

shut-off

lever

(H)

adjusting

screw

@

|

i

|

.

~

scrape

flutter

filter

roller

adjusting

screw

@:

lock

y

i

equalizer

|

6mm

SSS

}

:

i

ne

adjusting

screw

{

.

;

dler

arm

pa

|

Scrape

Flutter

Filter

Roller

Check

/

of

idler

arm

(C}

ass’y

shut-off

lever

holding

FWD

mode

|

plate

ass’y

_

At

4.8cm/s

(17/g

ips)

tape

speed

|

shut-off

mechanism

:

.

To

contact

the

tape

sufficiently.

|

release

|

—11—

:

2

ve

—

12—

SONY

-00124/DRUCKS.

FF

and

REW

Torque

Adjustment

FF

and

REW

modes

Adjust

by

changing

the

position

of

leaf

spring

to

obtain

the

specified

values

on

torque

meter.

(Read

the

values

when

driving

idler

is

forced

to

stop

the

motion.)

3

FF

idler

leaf

spring

driving

idler

in

REW

mode

in

FF

mode

1,000~1,400g-cm

(14~18

oz-cm)

{Reel

Table

Height

Adjustment

FWD,

REW

&

FF

modes

1.

Adjust

the

height

of

reel

table

by

adding

or

'

removing

the

adjusting

washers

(@

‘

)

so

‘that

tape

does.not

come

in

contact

with

reel

flange

in

FWD,

REW

&

FF

modes.

2.

Perform

tension

regulator

back-tension

adjust-

ment

on

page

9

and

FWD

torque

adjustment.

©

approx,

35mm

(13/3”)

ial

=

en

—

rer

‘lower

adjusting

washer.

1,000~1,400

g-cm

(14~18

oz-inch)

FWD

Torque

Adjustment

Adjust

FWD

torque

by

turning

the

screw.

200~

240

g.cm

(2.8~3.3

oz.inch)

torque

meter

FF

and

Driving

Idler

Height

Adjustment

STOP

mode

supply

—

reel

table

<F

©

nylon

washer

take-up

reel

table

SONY-00124/DRUCK6

se

ane

(6.96~10.4

oe.inch)

torque

.

Brake

Adjustment

STOP

mode

take-up

brake

torque

ciation

© |

j

400~550

g.cm

direction

C

(5.56~7.65

oz.inch]

ef

wastes

1,600

~2,200

g.cm

(22.2

~30.6

oz.inch}

2)

take-up

brake

adjustment

in

the

direction

shown

hae

1,000~1,800

g.cm

(13.9~25

o2.inch)

take-up

reel

table

\

supply

by

arrow

C.

reel

table

}

strong

(C>4——

lever

{

weak

WHat

Adjust

the

supply

brake

torque

by

expanding

or

contracting

the

pitch

of

the

spring.

brake

lever

ip

1)

Adjust

by:

eng

the

|

:

i

Trew.

i

tension

regulator

arm

;

aa

own

Win

(

ve

enna

MR

~%h").

(S)

lever

al

3)

take-up

brake

torque

adjustment

in

the

direction

shown

by

arrow

D.

e@

When

the

meter

reading

is

more

than

the

specified

value,

bend

the

‘lever

in

the

direction

shown

by

arrow.

©

When

the

meter

reading

is

less

than

the

specified

value,

cut

off

one

turn

of

the

spring

end

and

hook

the

‘spring.

.

7.5~8mm

(5/6”)

in

STOP

mode

After

having

performed

the

tension

regulator

adjustment

on

page

9,

make

the

supply

brake

torque

adjustment.

Tape

Slack

Check

Place

the

machine

in

vertical

position

and

thread

tape

with

7”

reel.

Be

sure

not

to

slack

the

tape

in

the

following

REW

conditions.

|

peor

end

portion

of

REW

—

STOP

tape

(Fig.

A)

7”

reel

|

beginning

of

tape

FF

beginning

of

Pull

PAUSE

lever

in

|

tape

FWD

mode

at

19

cm/s

(7/2

ips),

STOP

FWD

—

STOP

at

4.8

cm/s

(17/g

ips)

(Fig.

C)

beginning

of

©

tape

7"

reel

FWD

(4.8cm/s)

STOP

Flywheel

Brake

Check

REW

mode

,

take-up

reel

table

Be

sure

that

flywheel

brake

comes

in

contact

with

fly-

wheel

in

REW

mode.

flywheel

.

Tape

Speed

Adjustment

1.

Playback

SONY

speed

check

tape

(SPC-47)

at

19

cm/s

(7%

ips)

tape

speed

in

horizontal

position.

"Read

digital

frequency

counter

connected

to

LINE

OUT

jack.

-

2.

If

the

counter

reading

is

out

of

3,960~

4,040

Hz,

replace

with

the

motor

pulley

with

identification

mark

shown

below.

(As

for

part

No.

of

motor

pulley,

refer

to

page

28.)

;

SONY

speed

check

tape

SPC-47

no

signal

4kHz

ee)

signal

4

min.

2.5

min.

26

nae

“deviation

-3%

-2%

-1%

0

+1%

+2%

43%

frequency

,

3980

4020

on

counter

3880

3920

“3960

_,

4000

4040

4080

4120

identification

mark

#2

+7

70.5

80

-0.5

-1

-2

on

motor

pulley

19cm/s

(7

1f

ips)

Deviation

(%)

Variation

Limit

(%)

3-2.

ELECTRICAL

ADJUSTMENTS/

MEASUREMENTS

Precaution:

I...Clean-

the.

following

parts

with

an

alcohol

:

moistened

swab:

record

head

.

playback

head

pinch

roller

rubber

belts

erase

head

idlers

capstan

tape

guides

2.

Demagnetize

record

head

and

playback

head

with

a

head

demagnetizer.

3.

Do

not

use

magnetized

screwdriver

for

adjust-

ments,

4.

After

adjustments,

apply

locking

paint

to

the

adjusted

parts.

5,

Adjustments

should

be

performed

in

the

order

given

in

this

service:

manual.

6.

Adjustments

and.

measurements

should

be

performed

for

both

L-CH

and

R-CH

with

rated

'

power

supply

voltage

unless

otherwise

specified.

Test

Equipment/Tools

Required:

audio

oscillator

(af

osc)

VTVM

400

Hz

bandpass

filter

attenuator

(6002)

non-magnetic

screwdriver

wow

meter

distortion

meter

oscilloscope

resistOrs

.........

6002

(4W),

3002

(AW)

10k2

(4W),

100k2

(4W)

SONY

test

tape

J-19-F]

"CEP

EER

z

ever

esi]

10]

0]

v0]

10]

“i0]

“io

0

blank

tape

(completely

erased

with

bulk

eraser)

|

SONY

super

150

,

SONY

SLH

Note:

When

connecting

the

measuring

equip-

ments

to

the

input

or

the

output

jack

of

the

machine,

take

the

impedance

matching

correctly.

|

mon

wl

Rated

Output

Level!

(Load

impedance)

Rated

Input

Level

{Input

Impedance)

MICRO-

{|

-60

dB,

0.78

mV

PHONE

(6002)

LINE

|

-10dB,0.25v

|

OUT

IN

(10k)

RECORD

VOLUME

control

should

be

set

as

follows

unless

otherwise

specified.

LINE

RECORD

VOLUME

Position

to

obtain

0dB

(0.78

V)

LINE

OUTput

for

1kHz,

-10dB

(0.25V)

LINE

INput

with

MIC

RECORD

VOLUME

set

to

the

minimum

position

and

MONITOR

switch

set

to

SOURCE

position.

MIC

RECORD

VOLUME

Position

to

obtain

0dB

(0.78

V)

LINE

OUTput

for

1kHz,

-60dB

(0.78mV)

MICROPHONE

input

with

LINE

RECORD

VOLUME

set

to

minimum

position

and

MONITOR

switch

set

to

SOURCE

OdB,

0.78V

(100k)

position.

af

osc

VTVM

70kQ.

(for

©

|

.attenuator

LINE

IN

only)

199

kQ.

ze)

“O—=o

O

=

stood?

=

Fe

[

|

60022

WicROPHONE

‘LINE

OUT

1

kHz,

-60

dB

(0.78

mV)

LINE

IN

1

kHz,

-10

dB

(0.25V)

Note

on

replacing

the

heads:

1.

Erase

Head

Removal

When

removing

the

erase

head

from

the

head

deck,

remove

the

two

screws

shown

with

4.

(Do

not

remove

the

three

screws

shown

below

x)

.

Record

or

P.B.

Head

Removal

When

removing

the

record

or

the

p.b.

head,

remove

the

respective

angle

adjusting

screws.

(Do

not

turn

the

screws

saree

the

angle

adjusting

screws.)

angle

adjusting

screws

playback

head

record

head

erase

head

angle

adjusting

screws

Sony TC-377 Manuel utilisateur

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