Sony Tc-260 User manual

Serial

No.

29,001

and

after

Specifications

Power

Requirement:

Outputs

:

TC-260

Tape

Speeds:

Frequency

Response:

Signal-to-Noise

Ratio:

Flutter

and

ow:

Bias

Frequency:

Level

Indication:

Inputs

:

eight:

Dimensions

:

Trapslstors

:

SONY

SERVICING

GUIDE

100,

110,

117,

125,

220

or

240

volts

(Voltage

selector

provided

in

the

set)

C

50

Hz

or

60

Hz

(Convertible,

see

page

8)

55

watts

Instantaeous

selection

7%

ips

or

3?.j.

ips

(

19

or

9.5cm/s)

30-18,000

Hz

at

1%

ips

±3

dB

50-15,000

Hz

at

7X

ips

30-13,000

Hz

at

3M

ips

Better

than

50

dB

Less

than

0.19%

at

l'/z

ips

Less

than

0.25%

at

3^

ips

pprox.

55

Kc

Two

VU

Meters

(

calibrated

to

0

dB

at

12

dB

below

saturation

)

Microphone

inputs

(

low

impedance

)

uxiliary

inputs

(

high

impedance

)

Line

outputs

(

low

impedance

)

uxiliary

Record/Playback

Connector

2SC401

(X8),

2SC4O2

(x8),

2SC318

(X2),

2SD28

(x6)

pprox.

34

lbs.

(15.5

Kg)

21

*•/«/

Wx

15

’

73/

D

x

7

/

8

"

H

(541

WX392

DX200

H

mm)

Pre- mplifier

l

(Pre

m

plifier

Circuit

Board)

©

B

X1O3

2SC402

REC

Slot

6

Tioi

X

jr

D

l§l

1T22

PL Y

REC

Equalizer

Control

(PP30-4202)

CNJ-i

X)

EH101

(

EF

18-2902

Pre- mp

Circuit

Board

(Right)

EH201

Left)

©B

S7

C

100

—

240V

I

Main

mplifier

I

Tone

Control

Circui

Board

i

R51

1

20kQ

<

SP501

NF

Volume

B SS

X602

2SC402

*

.

R602

-1

OkQ

J601

1

Ron

20kU

NF

SP601

1

T701

Mam

mplifier

Circuit

Board

CNP]

<

Power

Supply

Filter

Circuit

Board

2

TC-26O

Block

Diagram

I

TREBLE

n

'

I

Fr

MEioi

(7\VU

Meter

J102

UX

IN

Rso?

I

10kQ:

XiOl

2SC402

X502

2SC402

X102

2SC401

X6O3

2SC402

X506.507

2SD28

X101

2SC401

S101-1

REC

ZS

‘

I-

1

[

—

OPL Y

(

I

.

R115

A

10kQ

Playback

Level

Control

X104

2SC318

X5O4.5O5

2SC401

X6O6

.6O7

!

2SD28

II

11

II

11

J701

3

Binaural

Monitor

O

5

3

0

Stereo/Monaural

Record

Switch

n

_

2SC401

R138

±

lOkfi

Rec

Level

'Control

R122

5kQ

T601

3

X701

2SD28

i

M

®

B

-

h

D3O1.3O2

5GD

:

□El

!

___

P7D2

5GD

(Same

as

X503

,

2SC402

l

'

X601

2SC402

1

S6-1-.

EFl

8-2902

R5I3

55kQ

OSC

Circu

i

t

Board

J

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

X301

'

d

'

2SD28

T

I

Jl°

3

©LINE

T

0UT

i

“

Hi

Ti

1

11

r

iiij

o

j

>

oi

nc

MICIN[[_

____

i

RPH

101

37)

Pinch

Roller

( 31jReel

Cap

( ^Cabinei

Foot( )

2)

Control

Knob

.MtZOl)

VU

Meter

(Fig.

1

)

Rewind

I

diet

Rewind

Idler

Take

up

Reel

Table

Deck

Fuse

noIder

Supply

Reel

Table

Motor

Pulley

Counter

Belt

Pulley

Tape

Index

Counter

A32

Take

up

Idler

u

Brake

Block

VU

Meter

Function

Selector

Cam

REC

Volume

Control

Head

Deck

MIC

Jack

Pilot

Lamp

Recording

Botton

Pincn

Lever

Capstan

Shatt

(Fig.

2)

3

—

TC-26O

[Cabinet

Top

View]

[Chassis-

Top

View]

Control

Panel

Volume

Control

Knob(

B)

Rec'P.b

Head

(PP304202N'

Volume

Control

Knob( )

Erase

Head

(EF18-2902H)

(M

ekh

)

VU

Meter

Power

Push

Button

( 36)

Cabinet

—

--------

(gspejd

Selector

( fUReel

Panel

------

»

'--.Function

"33/Selector

Knob

RF3

<

8

Screw

•

Power

ON/OFF

Switch

Motor

IC-624

Power

Transformer

UX

2P

Mini

Jack

Voltage

daptor

CNJi

LINE

2P

Mini

Jack

(Fig.

3)

8P

Connector

(CNP1

‘

c

PB1

X

i

I

"37

Power

Transformer

(

T

701

Volume

Control

c

o

(Fig.

4)

—

4

—

TC-26O

Chassis

Bottom

View

Main

Amplifier-Block

Bottom

View

REC,

Volume

Control

REC.

Volume

Contrl

MP.

Capacitor

1.5/tF

8P

Connector

(

Female

Printed

Circuit

Board

(

Pre

■

mplifier

Printed

Circuit

Board

(OSC

and

Power

Printed

C

rcuit

Board

Power

Supply

Rec

P

b

Connector

Printed

Circuit

Board

Tone

Control

)

Printed

Circuit

Board

Mam

mplifier

7

-

njiil

1

17

J

Rotary

Switch

Binaural

Monitor

Jack

pi

---

^PB?)

-

—

@

(*^(C)

2S

D28

ST

Rfill)

T°

ne

Control

(Bass

Rj'jj)

Tone

Control

Treble

_____

X

(

4

)

(

5

)

Note

:

.©RF4X30

Cabinet

Washer

( 30)

Speed

Selector

knob

6

I

(As)

Reel

Panel

n

2

Handle

Washer

Z7ffiB5X

50

(Fig.

5)

(Fig.

6)

5

TC-26O

Removal

of

Cabinet

Removal

of

Reel

Panel

(3)

(4

>

(1)

(2

1

(1)

(2)

(3)

Screw

A

(jTjjvolume

Control

knob

Turn

up

side

down

the

recorder

on

a

soft

pad.

Remove

the

five

Screws

(®RF4x30

marked

in

Fig.

5.).

five

Cabinet

Washers,

two

Screws

(®B5x50

marked

in

Fig.

5.)

and

two

Handle

Washers

as

shown

in

Fig.

5.

Lift

up

the

Cabinet

gently.

Disconnect

the

8P

Connector

(Male)

on

the

Main

mplifier

side

from

the

8P

Connector

(Female)

side.

e

--------

8P

Connector

|

(Female)

8P

Connector(

Male)

one

Screw

(@T

3x6

marked

▼

in

Fig.

on

the

Pre- mplifier

( ?9)

Head

Cover

< )

(£0)Hedd

Cover(B)

7)

Pinch

Rolleriol

( 33)

Function

Selectorknob

Remove

the

two

Head

Covers.

Remove

the

Function

Selector

Knob,

Speed

Selector

Knob

and

Pinch

Roller

by

loosening

the

respective

Set

Screws.

Remove

the

three

Screws

|©B3x6

marked

in

Fig.

6.),

three

Washers

30,

6.)

and

one

Washer

30

as

shown

in

Fig.

6.

Open

the

Cover

for

Recording

Box

and

pull

out

two

Volume

Control

Knobs.

Note:

If

the

Volume

Control

Knobs

are

too

tight

to

remove,

try

to

lift

Reel

Panel

up

slightly

and

the

Volume

Control

Knobs

will

come

up

for

easy

removal.

Now

Reel

Panel

can

be

removed

and

main

mechanism

can

be

checked.

When

re-assemblying

the

Reel

Panel,

the

Volume

Control

Shafts

must

be

located

just

at

the

center

of

the

respective

holes.

1

1)

11

&>

o'

fl

0

ir

e>

O

Screw

©RF3

X

€■

'Washer

3^

(Fig.

7)

(Fig.

8)

When

it

is

necessary

to

remove

the

Circuit

Boards,

proceed

shown

in

Fig.

3)

four

3(4

Spring

Washers

and

four

3(4

Washers.

(

1

I

—

6

—

TC-26O

Removal

of

Ornamental

Panel

for

mplifier

Removal

of

Circuit

Board

(

2

)

(

3

)

(4)

(

5

)

Printed

Circuit

Boards

can

be

checked

without

dis-assembled,

as

follows.

(

1

)

(

2

)

(

1

)

(

2

)

(

3

)

e

o

.-

©

\©

Spring

Washer

30

‘

A3)

Volume

.

COnTrol

Knob

Circuit

Board

for

Tone

Control

Section

Remove

the

three

Holding

Nuts

for

Potentiometer

of

Transistorized

Circuit

and

remove

the

Circuit

Board

for

Tone

Control,

taking

care

not

to

cut

the

connected

Leads.

Ornamental

Washer

(44)

Nylon

SB

K

A

%

<ft>

■

k

A

J

V

PF

4x2

5

4

?

Washer

—

-

—

®

etj

<

to

1

’

A

Circuit

Board

for

Pre-Amqlifier

Section

Remove

the

four

Screws

<5?RF3x8

(marked

with

Remove

the

two

Helical

Springs,

which

pull

slide

switch

(Rec./p.b.)

Knobs

from

the

Switching

Plate.

Raise

the

Circuit

Board

gently,

taking

care

not

to

cut

the

attached

leads.

Remove

the

Volume

Control

Knob

for

right

channel,

the

Volume

Control

Knob

for

left

channel

and

the

other

Control

Knobs

(Bass,

Treble,

Speaker

ON/OFF)

as

shown

in

Fig.

7.

Remove

four

Screws

(@RF4x25

marked

with

V

in

Fig.

7),

four

Ornamental

Washers

and

four

Nylon

Washers.

Lift

up

the

Main

mplifier

Block

gently.

Disconnect

the

8P

Connector

(Male)

on

the

Main

mplifier

side

from

8P

Connector

(Female)

on

the

Pre- mplifier

side.

Disconnect

the

P.V.C.

Wires

from

the

Main

mplifier

side

at

the

Speaker

Jack.

©

(§)contn>l

Knob

/

©

__

(1

©

k

1

r

’

Circuit

Board

for

Power

Supply

and

OSC

Section

Take

out

two

Holding

Screws

©RK3x6

marked

in

Fig.

8.

Slide

the

Printed

Circuit

Board

for

Power

Supply

and

OSC

section

rightwards

and

remove

it

from

the

left

Bracket

as

shown

in

Fig.

8.

(1)

set

Screws

for

Electrolytic

(

2

)

in

Fig.

12),

one

spring

’

Washer

3(5

and

one

Washer

3(5,

taking

care

'

3

)



(tj

RF

J

x

6

:r.

RF

3

x

3

ll



T;

B

3

x

6

(Fig.

9)

(Fig.

10)

Printed

Circuit

Printed

Circuit

Board

for

Pre-Amplifier

Part

No.

Serial

No.

Remarks

1-538-215-14

Sets

up

to

29,000

ll

transistors

are

changed

from

Germanium

to

Silicon.

1-538-433-11

29,001

and

after

37,501

and

after

Pattern

of

Circuit

board

is

changed.

1-538-433-12

1-538-433-14

No

check

Transistor

for

Bias

Oscillator

Serial

No.

Bias

OSC

Trans.

Part

No.

Transistor

Name

Q

’

ty

Sets

up

to

29,000

1-433-046-

2SB383

2

29,001

and

after

2SD128

2

I

1-433-081-

39,501

and

after

2

2SD72

59,401

and

after

1-433-106-

2SD28-3

1

—

7

—

TC-26O

Pnnted

Circini

Beard

for

Poner

Suopb

Filter

Printed

Circuit

Board

for

Mam

mp

of

Channel

-

1

Printed

Circuit

Board

lor

Ma

n

mp

of

Channel

2

Circuit

Board

for

Power

Supply

Filter

Section

Renmove

the

Printed

Circuit

Board

for

Power

Supply

Filter

by

loosening

the

respective

Capacitor

Mounting.

Remove

the

one

Screw

((+)RF3x8

marked

not

to

cut

the

connected

Leads.

Lift

up

Printed

Circuit

Board

for

Power

Supply

Filter

Section.

Soldering

positions

of

C

lJ0

(no)

are

changed.

Lead

(No.

29)

for

soldering

to

R

30

3

(68

Q)

is

soldered

to

SW

T

.

f

O

Spring

Washer

Wasner

3/

Circuit

Board

for

Main

Amplifier

Section

(

1

)

Remove

the

two

Holding

Screws

(ffiRF

3X6

marked



in

Fig.

9

),

two

Holding

Screws

(®B3x6

marked



in

Fig.

9

)

and

remove

the

Circuit

Boards

for

Main

mplifier

of

Channel

1

and

Channel

2,

taking

care

not

to

cut

the

connected

Leads.

50

c/

s

For

60

c/

s

Connected

Connection

between

terminals

of

Disconnected

I.

(2uF)

(

l.5uF)

the

Metalized

Paper

Capacitor(MP.)

2.

Pinch

Roller

3.

Capstan

Green

0

©

(Fig

11)

on

the

Board

with

three

Wood

Screws,

|®B3x6|

and

B

i$e

Plate

i-cr,

y

140mm

(Fig.

12)

—

8

—

TC-26O

Modifica11on

to

Different

Power

Line

Frequency

To

Install

the

Unit

to

Other

Equipment

e

(

1

)

(

2

)

(

3

)

0-027-470-01

(Red)

0-027

-

483-05

(

Red

)

0-027-483-06

(White)

0-027-477-01

(White)

60

c

/

s

Set

Screw

V

50

c

/

s

When

it

is

desired

to

install

unit

to

other

equipment,

proceed

as

follows

;

Remove

the

Reel

Panel

refering

to

Fig.

6.

Remove

the

Cabinet

refering

to

Fig.

5.

Install

the

unit

in

the

opening

(340x260mm,

13.4*

X

10.2*)

Rack

Mounting

Brackets

as

shown

in

Fig.

12.

Bracket

tor

Rack

Mount,

—

.

■

>

i

\

260rntn

The

alignment

is

to

be

performed

at

Connect

an

100

KQ

load

se

Head

Core

and

Rec./P.B.

Head

Core

and

upper

edge

of

the

tape

by

turning

the

io

I

3

)

i

djusting

Sere*

▲

|0

05mm

I

5

(Fig.

14)

(Fig.

13)

—

----

Bias

Current

RPH

I

IkQ

■

(Fig.

15)

9

—

TC-26O

djustment

Procedure

I

(

i

)

(

2

)

(

1

)

(

2

)

(

1

)

(

2

)

(

3

)

(

4

)

'

-Cold

Side

(in

REC

mode)

-RIGHT

LEFT

Tape

Guide

:

to

oe

adtusted)

djusting

Screw

la

v

■

...

@REG

PS

Head

....LI.

----

-

Azimuth

Alignment

Playback

a

10

Kc

signal

recorded

on

the

first

section

of

the

SONY

alignment

tape

"N-19-F1".

Turn

the

azimuth

alignment

screw

located

on

the

right

side

of

playback

Head

to

obtain

the

maximum

recording

on

the

VTVM.

Note

:

zimutn

lignment

Screw

t

RF

2

6x6

-1

~

■Q+

□KM

I

a

(TJJ

Head

djusting

Plat*

The

Rec./P.B.

Head

Mounting

Plate

must

always

be

kept

1.6

mm

high

from

the

Head

Deck

as

shown

in

Fig.

15

which

is

set

in

the

factory.

s

the

correct

positioning

is

very

difficult

without

jig,

take

care

not-to

turn

the

adjustment

screws,

marked

with

shown

in

Fig.

14

even

in

replacing

the

Rec./P.B.

Head.

Tape

Guide

(tH)E,

3se

Head

@REC

PB

Head

(To

de

aaiuste-d)

-^

\

(Not

il

0,05mm

f

Black-

j:

(v?v) pprox.

1.2V

a

tape

speed

of

7-1/2

ips

unless

otherwise

specified.

resistor

in

parallel

with

the

VTVM

terminals

and

connect

the

VTVM

to

LINE

OUT

Jack.

Recording

Bias

Adjustment

Unsolder

the

ground

lead

(s)

(Violet

for

Right

and

Black

for

Left)

on

the

terminal

of

Rec./P.B.

Head.

Insert

a

VTVM

and

a

1

KQ

resistor

in

parallel

between

the

Rec./P.B.

Head

and

the

unsoldered

lead

(See

Fig.

15).

Place

the

recorder

in

record

mode.

djust

Trimmer

Capacitor

(s)

(Right

...

C

J0

3,

Left

...

C

30

<)

shown

on

page

18

to

obtain

1.2V

reading

on

the

VTVM.

Elevation

Alignment

The

exact

vertical

positionings

of

the

Head

are

adjusted

at

the

factory

and

should

never

need

readjustment.

However,

when

replacing

Head

or

Tape

Guide,

height

of

the

replaced

part

in

relation

to

the

tape

be

checked

as

follows;

Head

Deck

Thread

a

tape.

lign

the

upper

edges

of

the

E

Tape

Guide

located

on

the

left

side

of

the

Erase

Head.

Turn

the

Tape

Guide

clockwise

by

approximately

30°

from

the

position

obtained

in

the

preceding

process,

so

that

the

upper

edge

of

the

tape

is

approximately

0.05

mm

lower

than

that

of

the

Erase

Head

Core.

'or

(Fig.

16

)

dBs(OdBs=O.

775V)

50

40

30

20

0

10

1

IdBs

0

-10

1

0)

-20

-25dBs

-30

X502 X503

X504.505

X5O6.5O7

Rs

:

2.2K

-10-

TC-26O

Main

mplifier

Level

Diagram

(1)

1

2

1

(3

>

-

14

5dBs

(5)

-

11

dBs

-21dBs

Equalizer

Adjustment

(

1

)

Playback

the

3rd

section

(700

c

s,

-22

dBs)

and

the

4th

section

(10

Kc

s.

22

dBs)

of

the

lignment

Tape

"

N-19

F1

’

and

the

potentiometer

R,

!:

(R„.)

shown

in

Fig.

16

to

obtain

the

same

readings

on

the

VTVM

for

both

the

3rd

and

the

4th

sections

of

the

alignment

Tape.

Meter

Calibration

Playback

second

section

of

the

alignment

Tape

"N-19-F1

”

(700

c/s,

-12

dBs).

djust

the

potentiometer

R,

S1

(R;u)

shown

in

Fig.

16

so

that

the

VTVM

indicates

0

dBs

(0.775

V).

djust

the

potentiometer

R,

Jt

(R

:31

)

shown

in

Fig.

16

so

that

the

Level

Meters

reads

0

VU

(100%).

NF

I

(21dB)-

‘

I

1

/

Bias

Trap

Adjustment

(

1

)

Place

the

recorder

in

record

mode

without

loading

a

Tape.

(

2

)

djust

the

Trap

Coil

L

103

(L

;03

)

shown

on

page

21

for

minimum

reading

on

the

VTVM.

I

NF

I

(35dB)

i

I

1

I

_________

I.

I

I.

_<D

—

IdB

\

<2)

----------

7

dBs

1

Sony TC-260 User manual

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