Sony TC-777-2 Bedienungsanleitung

Dieses Handbuch passt für folgende Modelle

3

Andere Sony Aufnahmegeräte Handbücher

Sony

Sony PFV-D10 Bedienungsanleitung

Sony

Sony SRP-L210 Bedienungsanleitung

Sony

Sony SVR-HDT1000 Bedienungsanleitung

Sony

Sony DMW-S01NL Bedienungsanleitung

Sony

Sony PCM-R300 Bedienungsanleitung

Sony

Sony RCD-W222ES - Cd/cdr Recorder Bedienungsanleitung

Sony

Sony SLV-ED8KR Bedienungsanleitung

Sony

Sony PFV-L10 Bedienungsanleitung

Sony

Sony RCD-W7V Bedienungsanleitung

Sony

Sony STR-DE725 - Fm Stereo/fm-am Receiver Bedienungsanleitung

Sony

Sony PCM-D50 - Portable Linear Pcm Recorder Bedienungsanleitung

Sony

Sony HKSR-5804 Bedienungsanleitung

Sony

Sony CFD-RS60CP Bedienungsanleitung

Sony

Sony RCD-W10 - Cd/cdr Recorder/player Bedienungsanleitung

Sony

Sony CXFD-S03CP Bedienungsanleitung

Sony

Sony STR-DA30ES - Fm Stereo/fm-am Receiver Bedienungsanleitung

Sony

Sony PFV-D300 Bedienungsanleitung

Sony

Sony XDCAM PDW-HD1500 Bedienungsanleitung

Sony

Sony SRW-1 Bedienungsanleitung

Sony

Sony XDSPD1000 Bedienungsanleitung

Sony

Sony CFD-RS60CP Bedienungsanleitung

Sony

Sony RCD- W222ES Bedienungsanleitung

Sony

Sony PCM-3348HR Bedienungsanleitung

Sony

Sony SB-V66S Bedienungsanleitung

Beliebte Aufnahmegeräte Handbücher anderer Marken

KV2 Audio

KV2 Audio 500 Series Bedienungsanleitung

Robotics Technologies

Robotics Technologies microBus-Cam II Bedienungsanleitung

Seca

Seca 460 Bedienungsanleitung

Cognex

Cognex MVS-8000 Series Bedienungsanleitung

Mect

Mect MPNC006 Series Bedienungsanleitung

Bad Caf

Bad Caf THE LEASH Bedienungsanleitung

Strymon

Strymon NIGHTSKY Bedienungsanleitung

Mitsubishi Electric

Mitsubishi Electric 16CH DIGITAL RECORDER DX-TL5000U Bedienungsanleitung

Tews Technologies

Tews Technologies TPMC465 Bedienungsanleitung

Honeywell

Honeywell Excel 50 Bedienungsanleitung

SeaLevel

SeaLevel COMM+8.LPCI Bedienungsanleitung

Arturia

Arturia AUDIOFUSE STUDIO Bedienungsanleitung

Rukra

Rukra RK-1240 Bedienungsanleitung

Samson

Samson SCOM Bedienungsanleitung

Dynacord

Dynacord DPS260 Bedienungsanleitung

Pyle Pro

Pyle Pro PSS8 Bedienungsanleitung

Nice

Nice Core Bedienungsanleitung

RF-System

RF-System TinyGate Gebrauchs- und Pflegehandbuch

Table

of

Contents

SPECIFICATIONS

BLOCK

DIAGRAM

3

TECHNICAL

FEATURE

4

CABINET

—

TOP

VIEW

CABINET

—

SIDE

VIEW

Model

777-2/-4

6

CABINET-SIDE

VIEW

Model

777-2J/-4J

7

CHASSIS-TOP

VIEW

8

CHASSIS-BOTTOM

VIEW

9

METHOD

OF

DISASSEMBLING

THE

SET

10-11

MECHANICAL

ADJUSTMENT

12-13

ELECTRICAL

ADJUSTMENT

13-17

17

MODIFICATION

TO

DIFFERENT

POWER

LINE

FREQUENCY

....

18

LEVEL

DIAGRAM

19-24

CIRCUIT

SCHEMATIC

MODEL

TC-777- /- J

2 -32

MOUNTING

DIAGRAM

33-38

CIRCUIT

SCHEMATIC

Model

777-2J/-4J

WIRING

OF

HEADS

39

40-48

EXPLODED

VIEW

Page

2

SONY

SERVICING

GUIDE

Specifications

4

track

monophonic

Head

Composition:

Inputs

:

2

Outputs

:

2

0

dbs

(0.77

V)

1

1

outputs

:

Motors

:

Dimensions

:

Weight:

2

-

1

1

1

Signal-to-Nolse

Ratio:

Flutter

and

Wow:

Blas

Frequency:

Recording

Time:

(with

1,800

ft

tape)

Power

Requirements:

Tape

Speeds:

Reel

Size:

Frequency

Response:

2

track

monophonic

&

4

track

stereo

1

hr

30

min

3

hrs

3

hrs

at

7'/i

ips

(19

cm/s)

6

hrs

at

3J4ips

(9.

cm/s)

1

1

1

1

1

1

2

IC- 24R,

;

UC-124R;

17*/,

(W)

x

177.

(0)

x

8'7..'

(H)

(44

mm

x

4 8

mm

x

216

mm)

42

lb

14

oz

(19.

Kg)

AC

100,

110,

117,

12 ,

220

or

240

Volts

0/60

Hz,

90

Watts

7%

ips

and

3?4

ips

Up

to

7*

(18

cm)

±2

db

40-16,000

Hz

at

7%

ips

(19

cm/s)

0-9,000

Hz

at

3?;

ips

(9.

cm/s)

Better

than

0

db

(at

peak

recording

level)

Less

than

0.1%

at

7>4ips

(19

cm/s)

Approx.

92

KHz

2

track

stereo

tc

-777:V:4

j

j

Line

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

Model

777-4

high

impedance

(100

KQ)

-12

dbs

(0.22

V)

Model

777-2

and

777-2J

-4J

high

impedance

(100

KQ)

-10

dbs

(0.2

V)

Line

Outputs

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

low

impedance

(600

Q)

high

impedance

(10

KQ)

Stereo

monitor

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

high

impedance

(10

KQ)

Model

777-2J

-4J

Record/Playback

Connector

inputs:

load

impedance

100

KQ

-33

dbs

(0.02

V)

load

impedance

100

KQ

-3

dbs

(0.68

V)

HC-634D,

;

Capstan

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

Reel

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

Reel

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

4

min

k

1

hr

30

min

Model

777-4

-4J

ERP24

2902;

4

track

erase/4

track

record

PP30-4202LNS

;

4

track

playback

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

PP30-2802LN

;

2

track

playback

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

Model

777-2

-2J

ERP24-2202

;

2

track

erase/2

track

record

PP30-2802LN

;

2

track

playback

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

PP30

4202LNS

;

4

track

playback

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

Microphone

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

Model

777-4

low

impedance

(2 0

—

600Q)

-72

dbs

(0.2

mV)

Model

777-4J

low

impedance

(2 0

—

600Q)

-60

dbs

(0.7

mV)

Model

777-2

low

impedance

(2 0

—

600Q)

-68

dbs

(0.3

mV)

Model

777-2J

low

impedance

(2 0

—

600Q)

-60

dbs

(0.7

mV)

CH

1

CH

1

Mic

Pre

-Amp

Record

Equalizer

Record

Amp

Mic

Bias

Oscillator

X-..;:

-.o;

Playback

6

Playback

CH-1

Line

Out

Amp

■©

Track

Selector

Equalizer

Line

Out

Selector

Channel

-2

VU

(Same

as

Channel

-

1

)

Power

Rectifier

Voltage

Selector

AC

D

t

Tape

Transport

Control

Circuit

If

TC-777

CH-l

Record

Equalizer

REC

H

Record

Amo

Bias

CH-l

E

H

Oscillator

Bias

ON/OFFSW

Line-Out

Amp

Track

Selector

VU

Channel

-2

AC

i

(Same

as

Channel

1)

Power

Rectifier

3

Block

Diagram

StiS

OsCil'atCr

Record

Amp

Line

Out

Amp

Playback

Amp

Mic

Pre-Amp

Playback

Equalizer

Selector

Tape

Transport

Control

Circuit

CH

1

REC

H

Bias

Oscillator

Record

Amp

Line

-Out

Amp

Pla/bac*

Amp

Mic

Pre-Amp

CH-1

4

track

P

B

H

CH-l

2

track

P.B

H

CH-l

2

track

P

B.H

CH

i

4

track

P

B.H,

CH

1

E

H

Playback

X

S

’

g

o

-----------------

•

Bias

ON/OFF

SW

Tape

Source

Moni

SW

L

TC-777z<j

Xioi

tc«

Pre

Amp

Xios

tot

tape

Source

Mon.

SW

X

ioi

io

?

CH-l

©-

Line

input

ch

Mic

input

(O

q

tc

-777:1/

i

;

input

CH-l

’

^9)

Loe-Out

Line

input

117V

IIOV

—

—

0

Tape

Transport

Mechanism

Head

Arrangement

The

Head

Assembly

consists

of

three

Heads

with

the

following

stack

arrangement:

f

TC777-2/-2J

2

Track

Playback

4

Track

Playback

PP30-2802LN

PP30-4202LNS

TC777-4/-4J

—

4

—

Technical

Feature

□rm

den

SONY

Model

777

Series

Stereo

Tapecorders

are

high

quality

precision

instruments

for

professional

three

Heads,

three

Motors,

all

transistor

Amplifiers

and

perfect

push

button

operating

system.

2

Track

Erase

/2

Track

Record

ERP24-2202

4

Track

Erase

/4

Track

Record

ERP24-2902

2

Track

Playback

PP30-2802LN

4

Track

Playback

PP30-4202LNS

TC-777in

The

head

located

at

left

is

Electro-Bi-Lateral

Head

which

Two

(Four)

Track

Erase

Head

and

Two

(Four)

Track

Record

Head

are

enclosed

in

one

shield

case.

Two

Track

Playback

Head

and

Four

Track

Playback

Head

are

perfectly

shielded

with

the

permalloy-copper-permalloy

shield

cases.

use

provided

with

The

tape

transport

mechanism

is

operated

electrically

with

three

Motors,

two

Solenoid

Plungers

and

three

Relays

switch



ing

the

Motors

and

the

Plungers.

For

driving

the

capstan,

Hysteresis

Synchronous

Motor,

whose

rotation

synchronizes

perfectly

to

power

frequency

and

is

not

influenced

by

power

voltage

change,

is

used

Speed

change

is

available

by

changing

numbers

of

the

pole,

viz.

4

poles

for

19cm/sec

(7-1/2

ips)

and

8

poles

for

9. cm/sec

(3-3/4

ips).

For

Feed

Reel

Motor,

Eddy

Current

Motor

with

outer

rotor

is

used

and

gives

proper

back

tension

to

the

tape

with

low

voltage

operation

in

Forward

Mode

and

rewinds

the

tape

with

high

voltage

operation.

For

Take

up

Reel

Motor,

4

Pole

Induction

Motor

is

used

and

operated

with

low

voltage

in

Forward

Mode

and

with

high

voltage

in

Fast

Forward

Mode.

Brakes

of

Take-up

and

Feed

sides

are

released

when

a

Solenoid

Plunger

is

pulled,

and

Pinch

Roller

is

pressed

by

ano



ther

Solenoid

Plunger.

—

5

—

->

—

»

o<

I

I

C<

’

t

I

(J

§

a5

_g

1

§

co

•o

o

cS

<

d

<

d

5

CD

E

a

-*

—

>

m

o

■*

—

cd

CD

CO

g

co

s

CO

8

O

■*-'

m

o

_

cd

CD

CO

o

4

—

'

m

o

c

s*

o

-g

q

S'

a:

.E

8

o

o

o

I?

CD

X

0)

Ofl

.E

x

CD

■s

■5

q

dJ

O

£

o

CD

X

■g

|

CD

£

I

1

22

O

QJ

CD

CO

_CD

a5

<D

(X

Q.

<D

_r

£

CD

=5

cr

s

=

a.

E

<

s

w

c

§2

£

<D

>

CL

O

F-

S

s

_o

H3

o

f

”

.

Jx

><

•

/

zj

co

o

□_

CD

00

»-

m

CD

CD

c

co

q

4

X

<

s*

o

g.

C

I..

i

00

©

s'

o

co

tc

-777.:/:L

j

UJ

t

“

<

iZ

co

o

O

co

d

’

-&

n

q

CO

§

1

a

£

2

o

<n

<3

d)

CD®

®@

®

©

@®

i)

®

®(D

©@@®©@®®

©(•)

®@@

fe

£

gs

°

£

?

2

°

2-S

S3

2

2-g

S-S

n

“

c

,

3

to

“

<3

<D

C

,

.

<D

X

O

q

~

g

o

1C-777

Aios)

Detachable

Hinge

Fuse,

2. A

------

(193

))Name

plate

(CNSJ

a

C

Outlet

Alt)

2)

Cabinet

Sash

A10- )

Lid

Catcher

Line

Input

Jack

IJ

u*t

c«>r

MIC

Jack

----

(S«2

(Fig.

)

6

—

Cabinet

Side

Views

Remote

Control

Connector

Screw,

@

RF3

X

6

4PCS

Screw.

©T3X2

Jack

Panel;

3

4

AC

Connector

(CNloi)

4

•(J

m

?)

Binaural

Jack

TC-777.;/:;;

Washer

Z"X

Screw

("10-22)

------

©RK4X20

'

each

4PCS

Lid

Catcher

uliM

I-

-----

<.

‘

03

\

.

-----

*-ine

J

acl<

Switch,

Impedance

Selector

©Rubber

Fool

8PCS

Screw

©RF3X8

6PCS

M,c

Se

£K<S>

—

I36

l)

jacl

'

Panel

A,

.X

Washer

------------

Screw

©

RK4

X

20

each

4PCS

Fuse,

2. A

(F301Y

Aus')

Detachable

Hinge

Name

Platen

93

I

AC

Connector

{CN306J

A1Q2J

Cabinet

Sash

A]

0.22'

AlO-s)

Lid

Catcher

Jack

Panel

(3

—

2

Jack

Panel

.36-2.

,A|03

o

)

—

7

—

'

UH!

I

Washer

Screw

©RK4X20

each

4PCS

Lid

Catcher

(A10-

Screw

©RF3X8

Washer

A10-22)

a

.

Screw

©RK4X20

v

—

each

4PCS

Rubber

Foot

8PCS

Screw

©T3X2

{CN^JAC

Outlet

TC-777:^

TC-777L

”

.(CNtOl)

Rec/P.B

Connector

—

(J40s)

Binaural

Jack

Line

Input

Jack

®

)

Screw.

©

RF3

X

6

4

pcs

MIC

Input

Jack(??

Remote

Control

(QHjjs).

Connector

V

z

/^xLine

Output

Jack^

F

'

g

'

6

’

\U04/

,Z

x

Switch

(S402)

Impedance

Selector

00

-

8

-

s?

1

■

N

N

N

i

W

s

U

o

§

>

&

<2

co

£

5

CD

O

2

g

€

5

co

o

cd

2

cp

1

co

jD

co

m

o

•g

2

o

o

■g

o

o

-Q

CL

ZD

JD

£

CD

JD

co

CD

£

CO

O

CD

<J~)

■O

o

<D

$

CO

L

l

o

2:

o

o

I

Q.

CD

TD

O

op

CO

CD

JD

JD

3

a}

cr

5

co

o

JD

<D

CO

CO

£

5

s

s

o

or

5

c

o

_o

CD

CO

o

O

2

CO

X

co

i

•o

o

o

CO

CD

ra

m

CD

CD

V)

Q.

X>

E

<

&

CD

<D

J

j

C

2

>2

cn

3

X

o

co

*5

.SC

CD

I

co

o

Vt

Q_

g

O>

\

p.

5

fe

+-

CD

O

<D

CL(X

_

CM

<D

o

X

a.

C

'

J

o

CD

OJ

a,

W

2

o

S

CM

&

Ixl

O

X

£

©

£

◄

TC-777.V:4i

CD

X

X

CM

o

“

-g.

o

J2

f<)

8:

'

cd

'

co

p=

E

<

o

£

I

Ix.

E

S

c

<

®

®

®

@

®

@@

®

®

®

®®

®

i

rr

i

i

i

i

i

i

<■2?.^

I

i

i

1

is

IS

I

f

2

So

H

si

*

<

(1)

Removal

of

Mounted

Circuit

Board

a?

I

I

*

-10-

-

9

—

Method

of

Disassembling

the

Set

X

ro

CD

o_

c

s

00

(2)

(

3

)

(

4

)

Power

Supply

and

Oscillator

Circuit

Board

Remove

two

Screws

(©B

2.6X12

marked

with

A

in

Fig.

13)

and

two

2.6$

Spring

Washers.

(

1

)

(2)

(

3

)

(4)

(

1

)

(

2

)

.52

5

k

N

N

i

U

f

'

5

3

5

E

o

co

1

co

CD

CO

s

o

c

o

o

§

CL

o

(J

o

2

o

CO

o

CL

£

aj

bp

<

a~

3

\

i

UJ

o

c

TO

£

a>

§

CL

c

i

o

<5

J

o

s

&

I

CO

£

1

CO

&

o

of

<1>

■C

|2

TC-777:;/.i;

tc

-777:;/::;

!

&

'3

E

£

Equalizer

Amplifier

Circuit

Board

Channel-1

Remove

three

Screws

(®B

2.6x6

marked

with

A

in

Fig.

16)

and

three

3(

Spring

Washers.

Circuit

Board

Channel-2

is

the

same

as

Channel

l.

Blas

Adjustment

Circuit

Board

Remove

four

Screws

(©B

2.6x12

marked

with

A

in

Fig.

13)

and

four

2.6(

Spring

Washers.

Removal

of

Control

Panel

Remove

two

MIC

Input

Control

Knobs.

Line

Input

Control

Knobs,

Playback

Control

Knobs,

one

Instant

Stop

Button

Guard

and

four

felts

by

loosening

respective

Set

Screws

as

shown

in

Fig.

11.

Pull

out

Record

Button

Guard.

Loosen

four

screws

(©RK3X20

marked

with

®

in

Fig.

11).

Lift

up

the

Panel

gently.

Removal

of

Cabinet

Turn

up-side

down

the

recorder

on

a

soft

pad.

Pull

out

the

Defeat

Plug

located

on

the

bottom

and

Fuse

Post

Cap

located

on

the

right

side.

Remove

eight

screws

(©RK4x20

marked

with

a

in

Fig.

9)

and

eight

Ornamental

Washers

as

shown

in

Fig.

9.

Lift

up

the

Cabinet

gently.

Removal

of

Reel

Panel

(

1

)

Remove

four

Screws

(©8

3x6

marked

with

▲

in

Fig.

10)

and

four

3$

Panel

Washers

as

shown

in

Fig.

10.

(

2

)

Remove

Reel

Panel

and

check

main

mechanism.

li

<3

g

O

f

—

E

3

-

■§

o

co

11

2

io

3

o

<3

g.~

Is

i

■C

g

.2

m

~

■g

co

I

o

.E

xo

B

CD

O

Z

CL

CL

ll

8

5

s

cr

o

°

Is

r\l

o

>

a.

in

3

°

2

O

§

f

I

%

g

S

3

2

S

3

2

|

g

f

«

S

“

3

“

3

Pro-Amplifier

Circuit

Board

Channel-1

(

1

)

Remove

five

Screws

(QB

2.6x6

marked

with

i

in

Fig.

8)

and

five

3<

Spring

Washers.

(

2

)

Circuit

Board

Channel-2

is

the

same

as

Channel-1.

c\i

CD

-S-

©

m

5

|

£

w

o

co

5:

bp

o.

co

.

“

<n

o

£

•3

I

r

Removal

of

Sub

Chassis

(

1

)

Remove

six

Screws

(©RF3X6

marked

with

•

in

Fig.

12)

and

six

3<

Spring

Washers

shown

in

Figl2.

(

2

)

Slide

the

Sub

Chassis

leftwards

as

shown

in

Fig.

12.

J

s

m

£

li

I

|

co

■5

S

■£

GJ

s

—

-

co

"3-

O

c

X<

”

CO

.2

CD

C

•>-'

Q

2®

I"

©S

°

“

5^0^

O

.E

Z3

i-

i-

—

rr

o

Q.

Z

I,t

_

n

3.

®

®

(D

©

©

®

®

®

®

®

5

S

o

co

5g

■u

CL

<

£

S

o

>

s

s

S

£

-

£

.2

o

CL

ZD

1

03

11

ll

I

co

ID

O

-Q

3?

S

CO

T

o

03

iH

<5

i

■S

I

£

©

it

AScre*

has

been

exactly

adjusted

is

replaced,

as

it

<?

Reel

Panel

(

3

)

ruse

Post

Cap

Mode,

or

after

replacing

a

Brake

Band,

if

the

brake

function

is

(Fig.

9)

is

pulled)

(Fig.

10)

(

4

)

(

1

14

oz

(2.2

kgs)

—

Torque:

67.

oz-inch

(4.840

gr-cm)

l

Fig.

12)

III

■»

—

I

l/capsi

an

shaft

(Fig.

13)

—

11

--

12

-

(Fig.

14)

[Mechanical

Adjustment

PP30

itZOZLNS

’

l

)

I

Tinted

Circuit

Board

Power

Supply

&

Oscillator

-

(1)

(

2

)

(

3

)

(

6

)

(

7

)

(

1

)

(

2

)

(3

)

(

1

)

(

2

)

TC7Z7

4/4

j

3

11

fCZ/7

2/2J

‘

,-|

Align

the

upper

edge

of

each

head

Core

and

the

upper

edge

of

the

Tape

—

’

•

iA.'imuin

Alignment

Screw

<

-

-

RF3X4

<?

t

t.

TC-77711;

lit

I

flr

Tc-777:;/::;

O.O7 mm

1.

3mm

0.07 mm

Tape

Guid

eul/)-

Elevation

Alignment

Adjustment

of

Heads

is

unnecessary

except

the

case

Head

or

Tape

Guide

at

the

factory.

If

replaced,

adjust

as

follows

(Refer

to

Fig.

14)

■

’

RF

6

Vct

R

W

Srt.

/

\

a

6

PCS

.

,.Z

24

•,

Prir

'ted

Circuit

Board

'.

i

Bias

Adjustment)

_(C?

r

7l'

1

Trimmer

Capacitor

'<^'30-

200PF

Z^xBias

Adjustment

Coil

AfW/

’

l

mH

Screw

.

‘

-,2.6x12

Spring

Washer

2.6

each

4PCS

•Sere*

‘

S

’

©RK3X20

B

4

PCS

AScrew

©RK4X20

8PCS

<39

‘

Pla

lc

,

Head

Apron

Screw

I..B2.6

x

1

2

Spring

Washer

2.6/

each

PCS

^^HERP24

2902^^^H

pP3

°

2802LN

^■(ERP24

2£O2jHBi-^)

.

A

J

Height

Alignment

Screw

W/Hexagonal

Hole.

3x

Ornamental

Washer

8PCS

Brake

Adjustment

When

the

machine

is

set

to

Stop

Mode

from

other

loose,

check

as

follows.

(Refer

to

Fig.

1 )

Set

the

Recorder

in

Playback

Mode.

(Brake

Solenoid

Plunger

Loosen

four

Screws

+RF3x6

marked

with

and

4-RF3X8

marked

with

O

Adjust

the

Spacing

between

the

Brake

Drum

and

Felt

Lining

to

approximately

1/2

inches

(1mm)

by

sliding

the

brackets.

Loosen

one

Screw

+RF4X10

marked

with

A

in

Fig.

1

of

the

Take-up

side

and

move

the

Spring

Holder

Lug

to

upper

side.

Place

a

Test

Hub

(or

empty

reel

with

44

mm^

hub)

connected

to

Tension

Gauge

on

Take-up

Reel

Table

and

pull

the

Tension

Gauge.

Reading

on

the

Tension

Gauge

should

be

approximately

4

lb

Adjust

Feed

Reel

side

in

the

same

way

as

Take-up

side.

Thread

a

tape.

Align

the

upper

edge

of

4

Track

(or

2

Track)

Record

Head

Cores,

2

Track

Playback

Head

Cores

and

4

Track

Play



back

Head

Cores

to

the

upper

edge

of

the

tape

by

turning

each

of

the

Height

Alignment

Screws

with

Hexagonal

Hole

(3x

marked

with

a

in

Fig.

14),

and

each

of

the

Three

Heads

must

be

parallel

to

Capstan

Shaft.

Turn

the

Height

Alignment

Screws

with

Hexagonal

Hole

of

only

4

Track

Erase/4

Track

Record

Head

and

4

Track

Playback

Head

counter

clockwise

by

approximately

4 °

from

the

position

obtained

in

the

preceding

process,

so

that

the

upper

edge

of

the

tape

is

approximately

0.07

mm

(0.02

mm)

higher

than

that

of

the

Record

Head

Cores.

Tape

Holdback

and

Take-up

Tension

Adjustment

Tape

holdback

and

take-up

tensions

are

adjusted

by

the

sliding

contact

on

the

Resistor

R,„

(upper

side

is

for

0

Hz

and

lower

side

is

for

60

Hz)

located

on

the

base

plate

above

the

Feed

Reel

Motor.

(Refer

to

Fig.

8)

Place

a

Test

Hub

(or

empty

reel

with

44

mmd

hub)

connected

to

Tension

Gauge

on

Feed

Reel

Table.

Set

the

recorder

in

Playback

Mode

and

read

the

Tension

Gauge

while

pulling

it.

Tension

Gauge

should

indicate

10.6

oz

(300

grs).

Torque:

9.2

oz-inch

(660

gr-cm)

If

the

specified

value

is

not

obtained,

adjust

R

303

.

Screw

2

6

12

1

Spring

Washer

2.6/

each

2PCS

Printed

Circuit

Board

'

3P

Connecter