Luxman R-1070 User manual

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1

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SERVICE

MANUAL

-

AM/FM

STEREO

=]

1070

DC

TUNER-AMPLIFIER

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|

PROMEL

FOE

IAS

3K

R1070

ALIGNMENT

PROCEDURE

(RF

Section)

otep

Process

1.

Connection

Connect

the

"REC

out"

terminal

at

the

back

panel

with

the

milli-volt

meter,

distortion

meter,

and

synchroscope.

Also

connect

the

FM

SG

(FM

Signal

Generator)

and

stereo

signal

operator

to

the

FM

antenna

terminal.

Set

each

control

on

the

front

Senes

Function

switch

at

the

"FM"

position.

IF

selector

at

the

"wide"

position.

Muting

switch

at

the

"off"

position.

Dolby

FM

switch

(if

provided)

at

the

"off"

position.

Set

the

semi-fixed

volumes

on

the

RF

board

as

follows.

center

O)

VR106

endmost

é

VRIO5

©)

CO)

center

C)

VRI08

VRI01

VR102

center

center

C)

center

C)

C)

VR1I04

VR103

center

center

VRIIO1

3.

Frontend

and

IF

Alignment

cu

oa

GQ

.

:

Confirm

the

de-emphasis

:

S

type

50uS,

U

type

7/5uS

Confirm

that

the

dial

pointer

starts

at

the

correct

point

and

moves

smoothly

on

the

dial

plate.

Set

the

dial

pointer

at

the

point

having

no

broadcast

station

and

receive

an

inter-station

noise.

Adjust

the

T1902

to

read

"0"

on

the

center

pSREe.

Set

the

FM

SG

to

108MHz,

output

1lmV,

mono

400Hz

100%

modulation.

Set

the

dial

pointer

at

108MHz

to

obtain

400Hz

signal

at

the

REC

out

terminal.

Reduce

the

output

of

FM

SG,

and

confirm

that

noise

is

overlapped

symmetrically

on

the

output

wave-form

of

400Hz.

Reduce

the

output

down

to

about

iSuvy

Adjust

the

trimmer

of

oscillator

to

receive

the

above

signal

correctly.

Adjust

the

antenna,

3

inter-stage

trimmers

at

the

frontend

one

by

one

to

obtain

the

maximum

output

at

the

REC

out

terminal.

i.

Set

the

FM

SG

to

87.5MHz,

output

1.5uV,

mono

400Hz

100%

modulation.

j.

Set

the

dial

pointer

at

87.5MHz,

and

confirm

that

above

signal

is

received

within

the

width

of

the

dial

pointer.

k.

Repeat

the

steps

(d)-(j)

2

or

3

times

to

obtain

the

max.

sensitivity

and

the

min.

dial

calibration

error.

Then,

adjust

the

frontend

IFT

L1005

to

get

the

max.

output.

1.

Set

the

FM

SG

to

98MHz,

output

20uV,

1KHz

100%

modulation,

and

adjust

the

VR104

to

obtain

the

swing

of

the

signal

strength

meter

at

"0.7".

m.

Change

the

output

to

lmV,

and

adjust

the

VR105

to

obtain

"4.5"

reading

on

the

signal

meter.

Then

switch

off

the

FM

SG

and

confirm

that

the

signal

meter

shows

the

zero

position.

n.

Set

the

IF

selector

switch

at

the

"narrow"

position,

and

adjust

the

VR1O1

as

per

the

step

(m).

o.

Increase

the

output

of

FM

SG

gradually

in

the

order

of

20uV,

500uV

and

IlmV,

and

confirm

that

no

change

takes

place

in

the

signal

strength

meter

by

inter-switching

the

IF

selector

between

the

"narrow'

and

"wide"

positions.

p.

Set

the

IF

selector

at

the

"wide"

position

and

fix

the

output

of

FM

SG

at

10uV.

Then

turn

on

the

muting

switch,

and

adjust

the

VR1O8

at

the

point

where

the

output

signal

is

available

at

the

REC

out

terminal.

q.

Set

the

FM

SG

to

ImV

output,

400Hz

100%

modulation,

and

adjust

the

T101

to

obtain

the

minimum

distortion.

r.

Reduce

the

FM

SG

output

to

the

minimum,

and

adjust

the

T102

to

obtain

the

"0"

indication

of

the

pointer

at

the

center

meter.

s.

Repeat

the

steps

(q)

and

(r).

4.

FM

MPX

Alignment

a.

Set

the

FM

SG

to

ImV

output,

no

modulation.

b.

Connect

a

frequency

counter

at

the

pin

No.

112

and

adjust

the

VR103

to

obtain

76KHz

ae

Hz

on

the

frequency

counter.

c.

Set

the

FM

SG

to

lmV

output,

1KHz

100%

stereo

modulation.

d.

Adjust

the

VR10O7

to

obtain

the

balanced

max.

separation

between

the

right

and

left

channels.

e.

Adjust

the

VR102

to

get

the

minimal

distortion.

f.

Confirm

that

the

stereo

indicator

lights

up.

g.

As

the

last

step,

adjust

the

VR1101

to

obtain

1V+10%

at

the

REC

out

terminal.

5.

Anti-birdie

Alignment

(S

type

only)

a.

The

anti-birdie

filter

does

not

need

adjustment

in

principle,

and

confirm

only

the

frequency

response.

b.

The

output

of

the

anti-birdie

filter

:

I1KHz

OdB

60KHz

-O0O.5dB

7

OKHz

-11dB

6.

AM

Section

a

b.

‘)

Ou

Set

the

AM-FM

switch

to

AM

position.

Connect

the

output

of

455KHz

Sweep

Generator

(SPG)

to

the

No.

130

terminal.

Connect

the

SPG

input

to

the

No.

129

terminal.

Set

the

SPG

to

“output

40-50dB,

sweep

speed

5-10Hz"

:

Adjust

the

T104

and

T105

so

that

the

IF

wave-form

can

be

symmetrical

and

that

the

output

can

be

maximum.

It

is

suggested

that

the

dial

pointer

sets

to

the

1,600KHz.

.

Disconnect

the

SPG.

Tune

in

to

600KHz

and

1,400KHz

on

the

dial

scale

by

adjustment

of

the

local

OSC

trimmer

and

core.

;

Adjust

the

bar-antenna

and

the

antenna

trimmer

to

obtain

the

maximum

output

of

tuner

at

600KHz

and

1,400KHz.

Set

the

output

of

AM

SG

at

100dB/m

and

adjust

VR106

so

that

the

signal

strength

meter

swings

to

4

1/2.

(ANT-IN

100dB/m)

i

SS

Net

die

es

te

Se!

a

oe

Ee

get

asi

We

aA

Cone

Wier

EXPLODED

VIEW

R-1070

EXPLODED

VIEW

PARTS

LIST

1.

WB1063

Wooden

Case

|

23.

SROO83

Rotary

Sw

(SP

Select)

2.

UR1125

Fixing

Metal

—

24.

TDO149B

LED

LDOO2RB

x

4

ce

Screw

4x20

TDO150B

LED

LDOO3RB

x

4

4.

Bx0040

Dial

Drum

25.

UR1141

Fixing

Metal

5.

AM0040

Signal

Meter

26.

Screw

4x10

6.

AM0039

Tuning

Meter

27.

WJ1066

Mould

Knob

(Power)

7.

Screw

4x10

black

28.

UB1033

Sub

Panel

8.

SRO111

Rotary

Sw

(Input

Select.)

29.

SP0113

Push

Sw

(Power)

(U)

9.

RVO103

Bass

Control

100kB

SP0114

Push

Sw

(Power)

(E)

{(S)

10.

RVO096

Treble

Control

50kB

30.

WJ1069

Mould

Knob

x

9

11.

WJ1067

Mould

Knob

(mode,

dubbing)

31.

SROO87

Rotary

Sw

(Mode)

12.

UXx1003

Fly-Wheel

32.

SROO88

Rotary

Sw

(Dubb.)

13.

RVO094

Main

VR

50kBx2+100kBx2

33.

PT2332

Power

Transformer

(E)

14.

Wi1045

Dial

Scale

PT2334

Power

Transformer

(VU)

15.

WH1033

Knob

(Input

Select.)

PT2335

Power

Transformer

(S)

16.

WH1039

Knob

(Tone

Cont.)

34.

LA1908

Frontend

17.

WH1039

Knob

(Tone

Cont.)

--

UC1107

Rear

Panel

(E)

(U)

18.

WH1035

Knob

(Tuning)

UC1108

Rear

Panel

(S)

19.

WH1039

Knob

(Main

VR)

--

BU0069

Leg

20.

WH1033

Knob

(SP

Select.)

--

BE1063

Heat

Sink

21.

WA1L140

Front

Panel

--

SP0077

Push

Sw

(Muting,

Monitor

etc)

22.

AJO0015

Headphone

Jack

--

§P0076

Push

Sw

(Filters)

Replacement

Parts

List

ee

ee

ee

ee

ee

ee

ee

ee

Qe

re

ee

ee

Remarks

Capacitors:

C.....

Ceramic,

Bigcieeans

Electrolytic,

Mize

tes

Mylar,

Goh

5.8%

G

Capacitor

ae

Styrol,

Peete

Tantalum,

Mis

oeMiea,

MP....MP

Capacitor

Osi40e0Ll

capacitor,

TRIMS

32.6

Trimmer

capacitor,

AC....AC

Capacitor

BP....Electrolytic

Bi-Polar

type

Resistors:

+10%,

+5%,

1/4W,

unless

specified

otherwise

Type:

op

eer

Model

for

north

European

countries

Citing

Stee

Model

for

U.S.A.

and

CANADA

Cito

ae

Standard

model

ie

eae

Model

for

JAPAN

CEO079

|

220uUF

+50%

CKO158

|0.047uF

+807

CKO158

|0.047uF

+807

0.047uF

+80%

0.047uF

+80%

0.047uF

+80%

22uF

+50%

0.022uF

+80%

.O22uUF

+80%

.OOLUF

+20%

.O47uF

+80%

.022uUF

+807

.OO1LUF

+202

10uF

+507

3.3uF

+752

O0.01uF

+80%

0.018uF

+107

QO.022uF

+10%

0.0012uF

+107

220uF

+50%

0.047

+80%

10uF

+50%

0.022uF

+80%

O.47uF

+75%

CCO002

+10%

-102

CE0074

+50%

-102

CKOL58

:

+80%

-202%

CKO158

;

+80%

-204

C02

tf

Oo)

+80%

-20%

+80%

-20%

+80%

-202

+80%

-202

CKO155

CKO158

CKO158

CKO158

Oooo

a

ee

be

+80%

-20%

+80%

-207%

+80%

-202%

+80%

-202

+80%

-202%

+10%

-102

+80%

-202%

CKO155

+80%

-202

CKO158

+80%

-20%

CKO158

|.

+80%

-202

CKO158

:

+80%

-202%

CKO158

‘

+80%

-20%

CKO158

:

+80%

-202

CKO158

.

+80%

-20%

CC0007

+10%

-107

CQ0079

+

5%

-

52

CQ0009

;

+10%

-10%

CQ0079

+

5%

-

54

CEO168

:

+75%

-10%

CEO095

+75%

-10%

cso0o19

"

+20%

-20%

CEO099

‘

+75%

-10%

CE0099

;

+75%

-10%

CKO155

.

+80%

-20%

CK0158

:

+80%

-20%

CKO155

:

+80%

-20%

CKO155

:

+80%

-20%

CKO158

:

+80%

-20%

CKO1L58

:

+80%

-20%

CKO155

F

+80%

-20%

CE0099

:

+754

-192

CKO158

.

+80%

-20%

CKO158

.

+80%

-20%

CKO158

.

+80%

-20%

CE0099

;

+75%

-10%

CE0079

+50%

-10%

CKO155

CKO158

CKO158

CKO158

'1CKO158

CCO130

CKO155

oOoonooo0ce

HORRORS

SS

OMRM

OO

AeA

OH

OOD

OO

+20%

-20%

+75%

-10%

+20%

-202%

+50%

-102%

+75%

-102%

+

5%

-

54

+

54

-.52%

ONnNMAAAmH

NH

+75%

-10%

+

5%

-

5%

+

5%

-

5%

+50%

-10%

+80%

-20%

+50%

-10%

+50% -10%

+50%

-10%

+50% -10%

+50% -10%

+80%

-20%

+80% -20%

AMOAO

OMANI

AAAAAMMHAMANEANAAARAANDAAARAAAANAANAAANAN

CCcO013

+10%

-102%

CQ0172

+

54

-

52%

cco004

+10%

-102%

CKO158

:

+80%

~20%

QAaomnnwtrmAm

ON

WN

OnwMnnqa

SYMBOL

|

STOCK

LOCA-

CKO155

|0.0luF

+80%

-20%

50V

Cg0218

|

750pF

+

5%

-

5%

SOV

CQ0218

|

750pF

+

5%

-

5%

5OV

CKO155|0.01uF

+80%

-20%

50V

CEOO74

|

1LOUF

+50%

-10%

16V

CKO153

|

0.047uF

+80%

-20%

25V

AQmAoInng

CEO075

CEQ075

CKO109

CE0213

CKO158

22uF

+50%

-10%

16V

22uF

+50%

-10%

16V

470pF

+10%

-10%

50V

2.2uUF

+75%

-10%

50V

O.047uF

+80%

-20%

25V

Omo

fi

tf

1082

47K

1K

RBO134

RBO222

RBO182

LOK

x

2

4702

47K

RBO206

RBO174

RBO222

RBO174

RBO200

RBO158

RBO1/0

RBO182

RBO206

RBO158

RBO174

RBO1/0

RBO198

RBO222

RBO166

RBO176

RBO198

RBO182

RBO166

RBO182

RBO134

RBO172

RBO202

RDO026

RBO166

RBO158

RBO1L58

RBO206

4702

5.6K

1002

3302

1K

10K

1002

4702

330

4.7K

47K

2202

5602

4.7K

1K

2202

1K

1082

3902

6.8K

R

1/4

22K

2202

£002

1002

10K

J

LOOK

1K

4702

6802

3.3K

3.3K

1K

3.3K

3.3K

3.3K

3.3K

22K

22K

10K

RBO230

RBO182

RBO174

RBO178

RBO194

RBO194

RBO182

RBO194

RBO194

RBO194

RBO194

RBO214

RBO214

RBO206

RBO230

RBO222

RBO148

RBO230

RBO200

SYMBOL

|

STOCK

LOCA-

1K

Y1

RBO182

RBO210

RDOO29

RBO182

RBO206

RBO174

RBO170

RBO198

RBO198

RBOQ222

RBO166

RBO176

RBO158

RBO218

RBO218

RBO206

RDOO043

RDO222

RDOO39

RDO069

RBO222

RBO208

RBO134

RDOO41

RBO1/0

RBO206

RBO206

RBO192

RBO216

RBO234

RBO216

RBO172

RBO184

15K

12K

R1/4

1K

7

10K

470

330

4.7K

“eK

47K

220

560

100

33K

33K

10K

R

1/4

1K

47K

R

1/4

2.2K

R

1/3

10

47K

12K

10

R

1/4

1.5K

330

10K

10K

2.7K

27K

150K

27K

390

1.2K

RBO222

RBO222

RBO230

RBO230

RBO206

RBO218

RBO206

|

RBO218

RDO0039

RBO0218

RDO260

RDOOS51

RBO182

RBO188

RBO218

RBO200

RBO190

RBO210

RBO216

RBO158

47K

47K

100K

100K

10K

33K

LOK

33K

R

1/4

2.2K

33K

R-50

270

R

1/4

270

1K

1.8K

33K

5.6K

2.2K

15K

27K

100

RBO206

RBO206

RB0206

RBO198

RBO206

RBOL58

10K

LOK

10K

4.7K

10K

100

TRO2

33

TROO85

TROO85

TROO85

TROO85

TROO85

TRO198

TROO25

TRO121

TRO198

TRO198

TROO25

TRO198

TCO106

TCOO099

TCO100

TCOO21

TC5006

TDO116

TDO116

TVO0004

TDO116

TDO018

TDOO18

TDO116

TDO079

TDO116

TDO116

TDO137

as

ei

LOCA-

28C535

2801923

Z5C1923

2501923

Z9C1923

29G1923

2SC1815

2SC1345

2SC1626

2SC1815

2SC1815

2SC1345

2SC1815

uUPC1163H

LA1231

uPC1173

HA1197__—.

uPC4558C

152/05

182705

KB265

IS2705

1K188-FM1

1K188-FM1

152705

WZ140

182705

182705

SIVBIO

agichar

3W3N

NG

maisn

NN

uNe

OVINE

LOLs

(L)V4OES

AOSZ

AINO

35N4

a

adAL

3AvS

binaith

sov71d3u

fe

Se

oe

=

SOue

JOLLUA

PB1228

SYMBOL

STOCK

|

LOCA-

emi

DESCRIPTION

TION

SYMBOL

|

STOCK

LOCA-

TION

Y2

RS1586

RS1568

RSOO74

RDO062

RDO259

RSO067

RDOO40

RDO047

RDOO45

RDOO45

RS1556

RS1556

RDOO21

RDOO21

RDO037

RDOO037

RGOOO1]

RGOOOL]

RS1534

RS5004

RSO201

RS5005

RDOO14

RDO034

RDO043

RDO032

RDO043

RDOO037

F50

1.5K

F50

270

F50

100

39

R50

47K

F1/4

150

1.8K

560

820

820

F50

220

F50

220

56K

56K

Sa

3K

3.9K

0.33

S5WCS

0.33

SWCS

F50

10

10

2W

4.7

2W

680

2W

180K

5.6K

1K

8.2K

1K

DEOK

X3

X1

X20

%2

YZ

-%2

Y22%2

X3

X1

X3

Xl

X32

XL

X3

X1

po

PG

X3

X1

X3

X1

X3

X1

X3

XL

X3

Xl

X3

Xl

X3

X1

X3

K1

X3

Xl

X3

X1

X2

K2

X2

X2

AZ,

RZ

X2

X2

X2

X2

CE5019

|1uF

+75%

5OVECX

X2

RS1092

|

F1/4

2.2K

CCO007

|100pF

+10%

-10%

50V

S

X2

X2

RDOOO4

|

1M

CEO085

|33uF

+50%

-10%

25V

E

X2

X2

RDOOO4

|

1M

CEO102

|47uF

+50%

-10%

50V

E

X2

X2

RDO023

|

39K

CQO0611

|0.22uF

+10%

-10%

100V

P

X2 X2

68K

CC0038

|5pF

+10%

-10%

50V

S_

X2

X2

RDOO39

|

2.2K

CQ0180

|33pF

+

5%

-

5%

125V

S

X2

X2

CKO183

|0.001luF

+10%

-10%

50V

S_

X2

X2

RDOO25

|

27K

CKO126

|0.00luF

+20%

-20%

50V

S

Y2

Y2

RDOO25

|

27K

CEO107

|47uF

+50%

-10%

63V

E

X2

X2

TRO146

|

2SC1740

CQ0124

|0.022

+

5%

-

5%

50V

M

X3

Xl

TRO146

|

2SC1740

CE0077

|33uF

+50%

-10%

16V

E

X3

Xl

TR5003

|

2SA798G

CEO076

|33uUF

+50%

-10%

16V

E

X3

Xl

TRO218

|

2SA872

CKO109

|470pF

+10%

-10%

50V

S_

X3

Xl

TRO218

|

2SA872

CKO109

|470pF

+10%

-10%

50V

S_

X3

Xl

TROO9O

|

2SD756

CKO203

|0.01uF

+20%

-20%

500V

S

X3 Xl

TROO9O

|

2SD756

CQ0613

|0.1pF

+10%

-10%

100V

P

X2

X2

TRO197

|

2SB716

cg5008

|0.1uF

+10%

-10%

250V

P

X3

X1

TRO165

|

2SC1775

CEO096

|220u

+50%

-10%

25V

E

X2

TRO218

|

2SA872

CEO118

|47uF

+50%

-10%

25V

E

x?

TRO165

|

2SC1775

CE0079

|220uF

+50%

-10%

16V

E

yg

TRO241

|

2SA1006

CEO079

|220uF

+50%

-10%

16V

E

x2

TRO242

|

2SC2336

CEO086

|10uF

+50%

-10%

25V

E

x2

TRO269

|

2SB705

CEOO86

|10uUF

+50%

-10%

25V

E

X2

TRO270

|

2SD745

CKO073

+10%

-10%

500V

S

TROOOL

|

2SC734

RDOO22

TRO146

|

2SC1740

RDO038

TRO148

|

2SA826

RDO038

TRO146

|

2SC1740

RDOO25 TRO146

|

2SC1740

RDOO37

TRO165

|2SC1775

RDOO22

TRO165

|

2SC1775

RDO0039

TDO141

|

BZ-340

RDOO25

TVOOO4

|

KB265

RDO0026

TDO069

|

1N4448

RDO039

TDO069

|

1N4448

RDO029

TDO069

|

1N4448

RDO032

TDO069

|

1N4448

RDO023

TDOOO1

|

1N4002

RDO134

TDOOO2

|

1N4001

RDO032

TDO073

|

WG713

TDOO73

|WG713