Teleton Cs-400 User manual

SERVICE

MANUAL

Hi-Fi

LW/MW/SW/

FM

Stereo

Receiver

with

Disk

Player

MODEL

CS—400

YY td

Alp

Hi

i

ae

7

Hotes

y

sayy

ay?

lees

(Edition

B)

Jan,

1975

TELETON

Electro

GmbH.

+

Co.

KG

4000

Dusseldorf-Rath

Oberhausener

Str.

17

Tel.

(0211)

65

30

81

TX

858

6768

TELETON

Electro

(UK)

Co.,

Ltd.

Teleton

House,

Waterhouse

Lane,

Cheimsford/Essex

Tel.

Chelmsford

62

442

TX

93

338

Technical

Service

Organization

Waterhouse

Lane,

Chelmsford,

Essex.

Tel.

0245-54621

TX

99338

TELETONN.

V.

2200

Borgerhout

Prins-Leopold-Straat

28

Tel.

03/361045

TX

32508

03/357670

Belgium

TELETON

NEDERLAND

Nieuwe

Herengracht

119

Tel.

24

83

81

Amsterdam

TELETON

Electro

(France)

S.a.r.|.

21

rue

Paul

Lafargue

94

Kremlin-Bicetre

Tel.

726

4091

TRANSACO

AG

Kanzleistrasse

126

8004

Zurich

Tel.

39

45

60/23

5040

TX

52

362

For

disassembly

please

see

exploded

view.

ADJUSTMENT

INSTRUCTIONS

1.

Adjustment

of

Main

Amp.

When

transistors

Q311,

312,

313,

314,

315,

316,

317,

318

are

exchanged,

the

following

adjustment

is

necessary:

1-1

Measuring

Equipment

(a)

DC

Current Meter

(100mA

Maximum)

(b)

Oscilloscope

(c)

Dummy

load

30W

1-2

Condition

of

the

Set

Middle

Position

(a)

Treble

..........

(6)

BaSS-

fo

oar

-a-

kh

2

ee

Middle

Position

(c)

Volume

........-.-.

Minimum

(d)Balance

..........

Middle

Position

(e)

Muting,

AFC,

Loudness,

High

Filter,

OFF

Position.

(f)

Mode

Switch.

.......

Stereo

(g)

Function

Switch.

.....

AUX

(h)

Speaker

Switch

......

A

or

B

(i)

Tape

Monitor

Switch

.

. .

ON

1-3

Adjustment

(a)

Set

VR301.VR302,

VR303,

VR304

to

meckanical

cen-

ter

Position

(AA-400

P.C.

board)

.

(b)

Connect

the

DC

Current

Meter

to

Fuse

Terminal

(AA400

P.C.

Board

L

or

R)

@:

Terminal

No.

21

©:

Transistor,

collector

side(

L:

Q315

R:

Q316)

(c)

Adjust

VR303(L)

or

VR304(R)

to

obtain

17MA

+

3mA.

(d)

Repeat

procedure

(a)

~

(c)

several

times.

(e)

Add

the

signal

of

1000Hz,

G(OOmV

~1V

tp

tape

input,

and

adjust

Volume

Control

for

Clipping

level

of

speaker

(or

dummy)

output.

(Tape

Monitor

Switch

:

ON

Mode

Switch

:

MONO)

(f)

Adjust

VR301(L)

&

VR302(R)

to

obtain

the

symmetrical

sin-wave.

(g)

Repeat

procedure

(e)

~

(f)

several

times.

2.

AM

|

F

Adjustment

2-1

Measuring

Equipments

(a)

AM

Standard

Signal

Generator

(b)

Output

Meter

(V.T.V.M)

(c)

Oscilloscope

(d)

Dummy

Load

82.

30W

2-2

Preparation

of

Adjustment

(a)

Volume:

Max.,

Mode:

MW,

Others:

same

as

procedure

1-2

(b)

Measuring

Connection

is

as

follows:

AMF

-400

AM

Frantend

P

C

Board

Terminal

®

Osedh

te

ope

{——-

-4

Dummy

{oad

10K

9.01

anna

“eemmes

¢

0

Be

Bee

oe

a

ee

med

Seep

Sete

eee

ce

oS

C.

;

dons

BQ

i

[SB.QU1

HOW

Le

Ssteaedaesd

‘eo

dial

Generator

Figure

1

VAIOA

1K&

|

:

I1C103

LASIOO

T104

O

mu

CFU-1002

8}

bd

GN10390

Pee

;

TP2

sre

(¥]

Ne

ei

5

navies

T10:

T1108

C)

Olas

OM

K112

©

T109

L102

K413

THO

WM

14033

1101

TPI

T105

C24

IQ

9

Tt06

T107

JVR103

aa

cay

50K82

HF-400

IF

P.C.

Board

Figure

2

2-3.

Adjustment

(a)

Set

S.G.

to

460

KHz

(Mod,

400

Hz

30%)

80

dB,

and

adjust

IF

cores

of

T1104

and

T105

for

maximum

output

reading.

(See

Figure

2)

Adjust

the

Attenuator

of

S.G.

according

to

increase

the

output,

and

put

the

output

reading

to

500

mW

(2V).

(b)

Repeat

procedure

(a)

several

times.

i

AM

Tracking

Adjustment

(Adjusting

procedure

for

LW,

MW,

and

SW)

(See

AMF-400

AM

Frontend

P.

C.

B.

)

3-1

Measuring

Equipments

(a)

AM

Standard

S.G.

(including

loop

antenna)

(b)

Output

Meter

(V.T.V.M.)

(c)

Oscilloscope

(d)

Dummy

Load

82

30W

3-2

Preparation

of

Adjustment

(a)

Volume:

Max.,

Mode:

LW,

Others:

same

as

protedure

1-2

(b)

Measuring

connection

is

as

follows:

MW.

LW

SP

4

ohn

Bar

Antenna

OSC

Uta

se

apie

Mod.

400

2.4%

Figure

3

Figure

4

(c)

TC201,

TC202,

TC203,

TC204,

TC205

and

TC206

Position

are

as

shown

in

Figure

4.

Note:

All

adjustments

for

rnax.

Output.

3-3.

LW

Tracking

Adjustment

(Function

Switch:

LW)

3-3-1

Adjustment

of

Local

Osc.

circuit

Adjustment

Step

|

Frequency

(S.G.)

1

145

kHz

Min.

Capacitance

V.C.

Position

Max.

Capacitance

Adjust

Point

Repeat

Step

1

and

2

several

times.

When

step

1

and

2

match,

adjustment

of

the

Local

Osc.

Circuit

is

finished.

3-3-2

Adjustment

of

Tuning

Circuit

Adjustment

Step

Frequency

(S.G.)

Adjust

Position

320

kHz

Tuning

Position

160

kHz

Tuning

Position

T601

LW

Tuning

Coil

(Bar

Ant.

)

re

ene

nee

terrane

Repeat

step

1

and

2

several

times.

When

step

1

and

2

match,

adjustment

of

tuning

circuit

is

finished.

Fix

the

LW

Tuning

Coil

with

wax,

and

adjust

finely

the

Local

Osc.

Circuit

(because

the

coverage

drag

by

the

Tracking

adjustment.)

3.4

MW

Tracking

Adjustment

(Function

Switch:

MW)

3.4-1

Adjustment

of

Local

Osc.

Circuit

Max.

Capacitance

Min.

Capacitance

3-4-2

Adjustment

of

Tuning

Circuit

Adjustment

Step

1

a

eee

600

KHz

Tuning

1400

KHz

Tuning

Position

‘

ay

MW

Tuni

Adjust

Position

roo

Bee

TC206

Coil

(Bar

Ant.

)

3.5

SW

Tracking

Adjustment

(Function

Switch:

SW)

S.S.G.

Signal

input:

AM

External

Antenna

(through

IEC

Dummy

Antenna)

3.5-1

Adjustment

of

Local

Osc.

Circuit

V.C.

Position

3-5-2

Adjustment

of

Tuning

Circuit

7

MHz

Tuning

11

MHz

Tuning»

Position

V.C.

Position

Adjust

Position

FM

IF

Adjustment

(See

Figure

2.)

4)

Measuring

Equipment

(s)

10.7

MHz

Interscope

(Sweep

Generator

and

Scope)

(b)

Detector

Probe

4-2

Preparation

of

Adjustment

(a)

Eunction

Switch:

FM

(manual)

(b)

FM

AFC

Switch,

FM

Muting

Switch:

OFF

-

ian

mn

$ntiarvare:

Cpu?

PSE

BEC

+

|,

ai

Input

QlO2

Base

jw

Overall

Response

Tout

in

C)

|

to

Q102

Base:

Figure

5

Note:

1.

Keep

output

lead

and

input

lead

at

a

distance.

2.

Ground

of

the

output

and

input

lead

should

be

done

near

point

of

hot

side.

4-3.

Adjustment

Overall

Response

(a)

Draw

the

secondary

core

of

T110

fully.

(b)

Adjust

1102,

103, 106,

107,

108,

109

and

T110

to

obtain

the

best

overall

response

(Fig.

6-a).

(c)

The

input

signal

should

be

appeared

small

unless

the

wave-

form

fade

away

by

the

noise.

(d)

The

waveform

should

not

change

by

input

level.

S

Curve

(a)

Adjust

the

secondary

core

of

T110

to

obtain

the

best

S

curve

(Fig.

6-b).

(b)

In

above

adjustment,

when

the

best

S

curve

does

not

obtain,

adjust

T102~T110

somewhat.

(c)

When

above

(a)

&

(b)

finished,

observe

the

overall

re-

sponse.

If

the

waveform

drag,

check

the

S

curve

again.

10.7

MHz

Maker

10.8

MHz

10.6

MHz

10.8

MHz

My

MMW

10,7

MHz

Maker

Wn

(a)

10.6

MHz

(b)

Overall

Response

S

Curve

Figure

6

5.

EM

Tracking

Adjustment

(See

Figure

2.)

5-1

Measuring

Equipment

(a)

FM

Standard

Signal

Generator

(include

the

pad)

(b)

Output

Meter

(V.T.V.M.)

(c)

Oscilloscope

(d)

Distortion

Meter

(a)

Dummy

Load

82

30W

5-2

Preparation

of

Adjustment

(a)

Volume

-----

Max.

Function

Switch

----

FM

(b)

Measuring

connection

is

as

follows.

SP

82

FM

Standard

:

,

ae

ee

et

Sigrast

‘oil

£

i

Gener

ator

2+

5082

:

yn

Ant.

a

CH

}

aac

eee

Gee

Se

i

ul

Dummy

Load

Mod.

400Hz

75KHz

Dev.

SPOUT

4

oo

Wits

cde

Figure

7

(c)

TC101,

TC102

and

TC103

position

are

as

follows.

Figure

8

(d)

Set

VR101,

VR102

and

VR103

to

mechanical

center

position.

le)

Set

Pre-Set

Switch

(Pre-Setter)

to

MANUAL.

5-3

Adjustment

5-3-1

Adjustment

of

Local

Osc.

Circuit

(a)

Connect

@

terminal

of

Voltmeter

to

HF-400

1F

P.C.Board

terminal

(7),

and@©

terminal

of

Voltmeter

to

chassis.

(b)

Set

tuning

to

max.

frequency

and

adjust

VR102

for

9.5V

Voltmeter

scale.

(c)

Set

tuning

to

min.

frequency

and

adjust

VR101

for

2V

Voltmeter

scale.

(d)

Repeat

step

(b)

and

(c)

several

times.

When

step

(b)

and

(c)

match,

voltage

adjustment

is

finished.

(e)

Adjustment

of

tuning

circuit

Max.

frequency

Adjust

for

max.

output.

Repeat

step

1

and

2

several

times.

When

step

1

and

2

match,

adjustment

of

the

Local

Osc.

Circuit

is

finished.

5-2-2

Adjustment

of

Tuning

Circuit

rrequency

(SG)

|

90MHz

|‘

102MHz__|

90

MHz

Tuning

|

102

MHz

Tuning

Position

Faint

Pome

|

Taoncioa

|

ror.

Te102

|

6.

Adjustment

of

Meter

(See

Figure

2.)

V.C.

Position

6-1

Adjustment

of

Meter

Input

96

MHz

(Mod.

400

Hz,

22.5

kHz

Dev.)

100dB

(Att.

scale),

and

adjust

VR103

for

4

Meter

scale.

7.

MPX

Adjustment

(See

Figure

2.)

7-1

Measuring

Equipment

(a)

FM

Standard

Signal

Generator

(S.S.G.)

(b)

FM

Stereo

Signal

Generator

(MPX

S.G.)

(c)

V.T.V.M.

(d)

Oscilloscope

7-2

Preparation

of

Adjustment

(a)

Volume

-----

Adjust

output

of

L

ch.

and

R

ch.

for

500mW

(2V).

|

(b)

Bass,

Treble

Control

.....

Center

(c)

Loudness,

Hi-Cut

Filter,

FM

AFC,

FM

Muting

Switch

2

OFF

(d)

Mode

Switch

-----

Stereo

(e)

Function

Switch

---

FM

(manual)

(f)

Set

VR104

1K%2

Semi-fixed

volume

to

center

position.

Zin

as

2

L-

R

Selector

Switch

°

FM

MPX

SG

tek

:

Rare

~

WT

VLM.

Oscilluscope

t

[

Figure

9

FM

SSG

Open

Output

Voltage

94

MHz

4mV

Modulation

Frequency

:

400

Hz

Modulation

Factor

-

tL+R

90%

(67.5

kHz

Deviation)

Pilot

Signal

10%

(7.5

kHz

Deviation)

Input

Voltage

:

ImV

Load

:

8a

(30W)

Output

-

5OOmW

(2V)

7-3.

Adjustment

(a)

Set

SSG

to

94

MHz

(L

+

R)

+

Pilot

to

ImvV.

(b)

Tune

set

to

94

MHz.

(c)

Connect

V.T.V.M.

to

terminal

(1)

of

{C103

through

47

kohm

resistor.

(d)

Adjust

L105

(19

kHz,

orange

coil)

for

maximum

voltage.

tr

Black

Figure

10

(e)

FM

MPX

SG:

(L.—-R)

+

Pilot

(¢)

Adjust

L106

(38

kHz

black

coil)

for

max.

output

and

min.

distortion.

Tuning

Point

appears

two

point,

there-

fore

adjust

with

first

tuning

Point.

(If

you

adjust

with

second

tuning

Point,

L

&

R

appears

opposite

side).

(g)

FM

MPX

SG:

R

+

Pilot,

Set

output

L.

(h)

Adjust

VR104

(1k)

for

minimum

output

waveform.

(i)

FM

MPX

SG:

L

+

Pilot.

Set

output

R.

(j)

Adjust

VR104

(1kQ),

for

minimum

output

waveform.

(k)

When

the

difference

of

L

and

R

Separation

is

more

than

6

dB,

turn

1106

finely

to

lessen

the

difference

of

Separation

between

L

and

R.

(1)

If

the

waveform

is

abnormal

in

L

side

with

L+19

kHz,

and

the

Separation

is

unbalance,

adjust

again

for

I.F.

and

check

the

MPX

circuit.

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Teleton CS-400 User manual

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