Luxman CL 35 mk III Service Manual

ULTIMATE

HIGH

FIDELITY

STEREO

COMPONENT

[l[]]OOOO[)G[jO

CL35 /m

CONTROL CENTER

SERVICE

MANUAL

CIRCUIT

DESCRIPTION

'.

1/2

12AX7
ECC83

1/2

12AX7
ECC83

1/2

12AU7
ECC82

200V

2«JV

l.OK

t------;jw~~::l

Signal

out

put

2",H

non ieverted
in put

fig. -1

Equalizer Amplitier

inverted

input

The

circuit

is

showninthe

Fig.

1.

This

amp

has

not

standard

methodofFeedback,

about

which

special

explanation

is

made

hereunder.

Fig.

2 shows

its

concept,

wherein

A-3 means

cathode-follower

with

its

gain

at

OdB.

While

A-2

has

+39dB

and

therefore

the

gain

is

+39dB

thru

A-2 and A-3.

At

A-I

the

output

impedanceis110K ohms by meansofelectric

feedback

from

the

cathode

side.

Local

feedback

by 2.2M

ohms

canbestipulated

as

th~

formula

Beta=1/19.8

and amount

of

NFis14dB.

Therefore

the

gain

is

+25dB

thru

A-2

and

A-3, and

input

impedance

becoms

210K

ohms.

At

A-I

load

is

120K ohms and

gain

is

+32dB, and

therefore

the

total

gaLnis57dB.

Fig.

3 shows

R.I.A.A.

complex.

The.

total

NF

shall

notbelevied

below

the

cut-off

frequency

of

50Hz.

In

the

case

of

triode

it

is

possible

to

suppress

the

distortion

below

the

sensing

level

under

flg.-2

small

signals.

The

present

operation

point

lies

at

the

total

distortion

balance.

~

II

,.

..

..

330lPF

\~PF

II II

l;~F

rr

220PF

2201<

."

~

phono

position

MlC

position

This

amp.

plays

the

role

of

mic.

amp.

as

well.

fig.-3

1/2

12AX7

ECC83

1/2

12AX7

ECC83

82K

18K

10K

.--------_------Cl

+21OV

fig.-5

output

1/400V

non

inverted

input

0-----11-

inveried

in~ut·

o--~r-1IH

fig.-4

Fig.

4 shows

the

circuit,

where

the

2nd

stage

is

constituted

by

dual

ampsoflocal

feedback.

The

feedback

circuit

is

showninFig.

5.

~ow

Frequency

Trimmer

operation

is

donebythe

feedback

circuit.

At

the

G)

position

roll-off

takes

place

at

100Hz

and

cut-off

takes

place

at

250Hz,

while

at

the

()

position

cut-off

commencesat100Hz

and

roll-off

starts

at

220Hz.

25lJ<.

B

1/2

12AX7

ECC83

Tone

Control

'"

~

§

~

l.

05mA

245V

MadeofLUX's

exclusive

NF

type.

All

circuits

are

showninFig.

6.

This

is

standard

tone

control

with

LUX

amps.

Incidentally

operation

of

tubes

at

this

stage

depends

on

distortion

and

level

of

grid

current.

Signal

output

1/400V

140V

10001<

Signol

input

fig.-6

fig.-]

~271'

Signnl ovtp'ut

Low

Cut

Filter

As

per

Fig.

7.

this

is

-12dB/oct.

filter

composed by

2-stage

coupling

of

CR.

This

filter

frequency

depends

on

the

level

set

volume,

and

the

standard

point

lies

at

the

5th

decrement

from

the

max.

position

(-6dB)

.

"

2

?45V

~':!!2'!!_~~2.:.

Composed by

cathode-follower

as

per

Fig.

8.

The

bias

is

fixed

at

this

stage.

Noise

"

of

zener

is

reduced

down

to

the

aliowable

Signal

level

by

high

cut

filter.

'Jutp.Jl

fig.-S

4700P

4.7K

5.6K

92rnH

~~~~-g,!!_~~~!~::

Shown by

Fig.

9,

and

attenuates

-12dB/oct.

by

means

of

LC.

The

filter

frequency

is

decided

inviewofload

and

lOOK

ohms

+ 200pF

(main

input

impedance

and

shield

wire).

Signa~

o----c)-.M)-----f--------1I------<O

S~~~pa~t

input

270P

470K

fig.-9

6.52V

Fig.

10

shows whole

circuit,

whichismadebywhole

stage

direct

coupled

pure

complementary

SEPP

configuration.

Q2

retains

the

fixed

current

load

triggered

byQ3and

yields

the

output

of

about

100rnW

into

8 ohms.

Ql

Q3;2SC1222

Q2

;2SAMO
Q4 ; 25C375
Q5 ;2SA562

Signol

output

~~g~:l

0--II-.Mf'-~-+___I(

p

2.2/22K

t---t--N'I--+-:-::C::c-1--lII---r--G

1.2K

fig.-lD

3

r---~--O+6.

52V

fig.-ll

lN4002

" 1

input

6.52V

IN4002

rms

0

~

~

The

circuit

is

shown by

Fig.

11.

Power

supply

section

is

commontoheadphone

amp

and

pilot

lamp.

Q212isput

into

operation

the

instant

the

powerisswitched

on.

AstoQ213

bias

is

gradually

given

on

the

base

through

R231

and

C215.

To

activate

it

some 0.4Visneeded.

When

the

power

supply

is

100%

0.4V

equals

6%.

To

charge

6%,

T/CR

is

needed

by6%which

corresponds

to

24

sec.

(CR

=400uF.Kohms).

Q211

is

activated

when

Q213

is

turned

on,

and

relay

functions

to

break

allowing

the

Pre

Out

terminal

to

be

open

from

short-circuiting.

Q2l2isturned

off

the

instant

the

powerisswitched

off,

and

then

Q2l3

and

Q2l1

are

turned

off

to

let

the

relay.contact

make

and

short-circuited.

Thenafter

the

base

current

of

Q2l3issupplied

by

D204.

PB-667

"

4

en

,Ai

~g~§~--~~~~~~---~§~~~~~~~~!_~~~!~-~!~!

PB-667
Description

TYPE

QUANTITY

1.

Printed

Circuit

Board

PB-667

1

2. Diode

SD-lB 4

3.

"

lN4002

3

4.

"

M4E

2

5.

"

lK188

1

6.

Varister

VD-1221

2

7.

Transistor

2SA562Y

3

8.

"

2SA640

2

9.

"

2SC735Y

2

10.

I!

2SC1222E

6

11.

Electrolytic

25V

4.7uF

1

12.

I!

10V

47

uF

4

13.

I!

6.3V 470uF

2

14.

I!

10V

330uF M

(NON

POLAR)

1

IS.

Tantalum

lOY

2.2uF

2

16.

Polyester

Film

SOV

0.047uF

3

17.

Ceramic

SOV

47pF

2

18.

Resistor

10K

~S%

lW

2

19.

I!

2.2K

11

I!

1

20

I!

lK

"

I!

1

21

270K

"

1/2W

1

22

1M;2

"

1/4W

1

23

68K

I!

I!

2

24

47K

"

"

2

25

27K

" "

2

26

22K

"

"

2

27

15K

"

I!

2

28

12K

"

"

2

29

I

10K

"

'1

3

30

I!

3.3K

I!

"

1

31

I!

2.7K

"

I!

2

32

"

1.

2K

"

"

2

33

"

680

"

"

2

34

"

470

"

"

2

35

I!

100

" "

1

36

"

47

" "

4

37

"

8.2

"

"

2

38

"

1

"

"

5

39

Relay

6V2circuit

transfer(AE1322}

1

PB-668/'669

----------

1

Resistor

2.2M

2

"

1

M

3

"

560K

4

"

470K

5

I!

220K

6

"

lS0K

7

I!

lOOK

8

"

82K

9

"

68K

10

I!

56K

11

"

18K

12

"

10K

13

"

6.8K

14

"

5.6K

15

II

4.7K

16

"

3.3K

17

"

1.2K

18

"

IK

19

"

820

20

"

470

21

"

47K

22

"

33K

.

23

"

270K

24

Metalised

Film

400V

25

"

400V

26

"

400V

27

I!

250V

28

"

250V

29

I!

250V

30

Polyester

Film

SO

V O.lSuF

31

I!

SO

V 0.068uF

32

"

SO

V

33

I!

50

V 0.027uF

34

I!

SO

V

35

I!

SO

V

36

Styrol

l2SV 3300pF

37

I!

125V

38

I!

l25V

39

I!

l25V

40

"

50

V 4700pF

41

"

50

V

42

"

50

V 270pF

43

I!

SO

V l80pF

44

Ceramic

50

V

45

I!

500V

46

I!

500V

47

Zener Diode

100W

lW

48

Electrolytic

6.3V

49

Coil

92mH

(7-1174)

SO

I!

2uH

(L-Ol)

51

Printed

Circuit

Board

PB-668

52

"

PB-6U9

~

CATHODE
FOLLOWER

~~

OUTPUT

LEVEL

SET

BASS FREQUENCY

...,-----.....:;,

SELECTOR

....

A

B

L.CH.

~N'CONNECTOR

R.CH•

B

A

R.CH.

~~~

.Thisdiagramisfor

the

LEFT

CHANNEL.

• Power source section

omitted.

I

,

'I

I ,

INPUT SELECTOR

r------------------r-,

I I I

I

AUX·2

AUX·'

MIC.

11NPUT IMPEDANCE

SELECTOR

AUX·3

PHONO·2

PHONO·1

MIC.

J.ACK

rr:::::

-J

SPECIFICATIONS

Tubes:
Frequency

Response:
T.H.O.:
Output

Voltage:

Output

Impedance:

I

nput

Sensitivity:
(output;1V,
output

level max.)

Input Impedance:

SIN Ratio:

Equalizer:
Tone Control:

Bass:

Treble:

Filter:

Low Frequency

Trimmer:
Attenuator:
Accessories:

Dimensions:

Weight:

12AX7 (6),

12AU7

(1)

15Hz-40,OOOHz

(-ldB)

no more than 0.06% (rated

output:

2V)
Max. 15V (distortion 0.3%)
550-ohms
phono-1

l.4m

V

phono-2

l.4mV
aux-l 140mV (variable)
aux-2 140mV
aux-3 140mV (variable)
microphone

0.7mV

phono~

1 lOOK ohms, 50K ohms, 30K ohms
phone-2 50K ohms
aux-l lOOK ohms
aux-2 150K ohms
aux-3 lOOK ohms
microphone 50K ohms

better than 64dB (phono-l & 2)
better than 77dB (aux-l & 2 & 3)
better than 60dB (microphone)

R.I.A.A. (strandard deviation ± 0.3%)

LU

X type NF system

with

defeat position

150Hz, 300Hz, 600Hz

1.5KHz, 3KHz,

6KHz

Low cut 25Hz, 60Hz

High cut 7KHz, 12KHz

100Hz - 800Hz

(±

0.8dB, 250Hz)

-20dB
Tape

Monitor

Circuit, Phono Input

Impedance Selector, Socket

for

step-up

transformer, Headphone

Ci

rcu

it

476

(19-1/25")W

x

275(11")0

x 190

(7-3/5")Hmm

Net 12Kgs (26.40

Ibs)

Gross

14Kgs (30.8

Ibs)

Specifications and appearance design subjecttopossible

change

without

notice.

8

LUX CORPORATION, JAPAN

HEAD OFFICE81FACTORY

1-8-31 NAGAHASHI, NISHINARI-KU OSAKA
PHONE:[phone] CABlE:lUXELECT OSAKA
TElEX:J63694

LUX

AUDIO

OF AMERICA

LTD.

200

Aerial

Way.

Syosset.

New

York

11791.

U.S.A.

PHONE:

(516)

822-7070

PrintedinJapan

~.

---

-

----

------

PIE

OUT

i

CL35111

I

Ii

I

I

I

I
I

I

I

I

I

I

I

I

I

_.J

Ih

1,,,Ola

--t

I

,••12A11

....

:

11

-133.

1201

-1226

~,

1101

-1110

%W

AUImLevel

Set

AUIILevel

Sit

I

...

Mlil

'011.

lass

TreIIII
Lev.

Sit

Had,..

Level

IIlIIXn(II)

1m 11!l(II)

,.

'I

'Ila.

lb

'I

2a.

2b

VI

3a.

3'

'I

.a.•,

VI

Sa.

5b

,.

6a.

6'

VIla.

l'

VI

la.

Ib

b.JI~l(

II)

lul_n(II)I.1m 2.210(11)

r---+-IINV~~fV'\r--+~~V\r--.--------~1l>

.-

.........

VV'w---t~--~.t~

.J'IY

8J>

·2.

"-"''VV''--1II~11l>

•

24ft

-r-------------

-t-

(1.

100102.SOlo3.3310)

(.1.

8ft

2.

11-)

(1.

AUIm2.

PIIOIo

n 3.'.I

•.

AUIn5.

AUII5.

ME)

(1.

,.

22.SOIfse

3.2101)

(1.

MOIitar1.2.

SDIlrse3.MOIIIr

2)

(1.

leverse2.loi3.I

+l

4.

".·1

5.

".·L)

(1

.•

t

2.

II)

(1.1M2.

Fl.

3.

Up)

(1.

DefIat

2.

II)

(1.

158Hz2.300Hz

3.

600Hz)

(1.

1.5IHz,2.31Hz3.&IHz)

O.

60Hz2.Detut

3.

25Hz)

(1.

11Hz

2.

Iefut

3.

121Hz)

Imln

I

CHAIIln

...

....

MtIIII

A

....

lJ.

J_

T.

"fill

Tn

h.

Tn

0-

low

CIt

HiP

CIt

Pow.

S

11.

lb

SII.

lb.

Ie

...

S

91, 9b.

ge.

9'

S

lOa.

lab

S

11a.

11b

S

121.

12b.

12c.

12.

S

13a.

13b.

13e.

13d

S

14

StleHI$

S

11.

1'.

,..

I.

IIIP.

S

21.

2'.

2e.

2.

S.

Up

Tr.

S

31.

3'.

3e.

:N.

31.31SeIIcbI

S

41.

D.

4c.

~

S

51.

D

SI

2

J

•

I

I

I

I

I

I
I
I

I

I

I

L_

AlII

I

....

·1

AUI-l

AIII·n

...

·n

MIC.

lEe.

liT·I

MIC.

JACI

lB.

IIT-l

lie.

..

IT.·I

lie.

JACI

AUI·!

AlII·I

AIII·n

...

·n

...

-1

II~

H,lm5.11ll

.........II"UID

lUX-III

~

E,

2 t

I

C,

1.~lu~1

1 I

I~

.;~II.u1

'~

.-0-.

1111

IIID

clIl'isM

L _I'"

r-'~

S..

SI,

te'

21

II

It

W

2

--u..

s..

I

III11D

2

So,

I,

~

v.__",

2

I::

rS2C

II

'~_g

·1,1

Y

J"~lil

Al

PHONO-

II

'I,.

25"""A,

l.~..........

A,

lorAl\./

'v

?JI

r.:

VI••25OIll(1)

I C'" •

.D6laf

CHII.IM

...

__

Cll_,_11511f-JINV'

!lt-+_51J'.- I IIl1.ul l'llHOD" .

ICV'·',-,Z::"'--{W.V'---t--,---t

'.r.'....Jl-

1.J!..Jl-

SI.

1

A<

'111;""

• 3

1

SIt.

~'-II

s",

~'!.L

1111

miD

.

~14

"

"~'ll

ct

!ofr-

3'1:

PHONO-

I

~

I," lliD IHII2lD .

Cll

11

IIf

!!!.:;

?'.It.

I.

C/

1~1-

~

~

I

1Pr,;""--;t1.'·-

.!l

~

I

Cll

'

.il,,1

_ Cll,I

.•

21,,1

tI

~

!;',.J2Axl

I11IZ.211

".12Ax1 ,

..

1ZAIlI

,."2AxlI1l156DID".12Axl

.:;

•••

,..12Axl

oc

".fZAxl

lUX-II

~

VI,.Z5IIll(A)

+---t--------.

I

_~-

107VV

Ill'

~I"

I1V

k§- ;

~I

;~~

~

I

~;~

21'!-l

s

~

H'

~~I.Df

H.

lUX-I

~fC-

S"),2I".110

~~

~1

.rnrr

__

'~"""'-'-"T.J..~-

~I~I;,;._

~

+-+--..-...,

!

~lzn

~;tl'l

;,;._'lfI

~

~

CllU••"

,~J~~

~qD.l":'''UIDI\

~__

111"'.~~;;;;-

~I

~

S..11151.IID"\_/

'_

'_

:;

LI,'r.

_"

!!~'_~

C,lllpI

,,'SHIt

i I

1i:5)

I

!!

~5)

SlI.Ir-~..,H2'117,mlll

~

« I

l,mD

5Jr

..

-~

1.'.1:"~."

.t.

II

=

';'~--

::

JI"

'~~V-::"'1oJ:<>11f-++I--"'-II-'-'IN1-ID--+-IJ

_iff h

~!~

~'~

~:~·~ ~

~

'm

;

f1

~~~

~~:~-

H

!~

n iri

J:,

~~'1L..'H-:'-I1~jmjl'-DIf-~

~

PRE

OUT

~_~+++-

__

----Jl--

-+--""---J~-+

__

+--+""""-+_--I~-+-_-t-

........~........-+.......

_--+

........

...,+...;~

.......

-t-...o..--+-+--

.........

-+..

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

-+---

.......

------;-+-1---'

'Ill

l-------1-

AIlIIII

I".

St!

ItIIInct

AIlll

I".

StI

Mlia,...

ImlSt!

T~lIo

H'IlI

.Iatt,

LmI

- - - - - - - 1-""'1-"1-+--,

i

~

PnUT

I

I

I
I

I

I

1

I

1

I

~--_----_--

__

-_-

__

-----------------J

I

VI.db

h",.

YI

•

.I,411

VI

ta,

2t1

"1,111

'h

..

llI

i

Iq,

-

it--

" Yl71,7b

VI

'a.

Itl

r---------------,

~I~

II

1"111

....

+----------------'

Ib IdIeI,

1.01

(A)

!-...t=t==:::=========..J1

1

--

--------

---,

.....

---

--)-<--

-

----------------j

r----+--I--+-+--~-----------

........

T;>-I+7AAI

.j

~

II

::i

Hi

A II

~

:

..+

__

~-I--+-+_-_i_-------------oJ:--"-+_-...,

! -

II~_

~)-

! I

I AI

/~

!

I;,

1Z1~!~~i~

~

:

I

: (

-+c:::J-c

i!!

" I

---.../

r-----~--.:..i--.:..--.:..--.:..ti--.:..--.:..--.:..--.:..i-=--=-~t-=--=-1--.:..--.:..1-=--=--=-t..,+I-------~------------_-_-~_-_-_-_-_-_-_..,tt-;;.A1<?::-~

'"

~

~

~

Cl

..

~~r-:-::::

t IIll

Z11

! 5 I

-----;.;"

I I I II

II..IMI

~

",

00222

nJl=

'"

IllS

1.21

S!

r v .

,1

HElD

PHOIE

lJ

H-Nlfo--1-J1Mf

........

-.J'I'

.......

-t-+'V-+-+--::-o-I

........

--,

....

IPlII

!;

Ill'

to)

i I 1r+-+---::lr""":...J'y

I.

III--

If

II.DlWh'UllllW

h,llOlllW

~

-h:

~ ~

I'~

I'Z.IID

....

lP1DIIl

; I-.!! !!!ZSAIU\5

~

..a?"\-=;;fi

:

It+-t--~-t<'''''''

+ T + T + I +~_

~.:+_~_I~,;+

~.!!

~"

.!

-=

~-~

I

_I~.:'

~.:'

Ii

-~-

,:;

."

~

~

'"

S I

II

A I

I, I

II

iii

i I I :

~

~

!

li

~

.11~

ZSt5!2

!

~

~~

1-0

1

-H--++-t-+---I

1'_

S 5Ii5 . 5

Ii

5

';;!

r

).:l:;

....

IQ

:

S!

I

.....-J.-...L---JL,--1----J:+---!--

........

--t--r--1r+H-.:..:

..

o

1

_~--..-....:-:........J

5;

::l.0'"

\t,

a ! I

m .I..

,,'

1,;IIl'lD

IM.0I2

I:l!

~

C1l541O"

~!~~~ ~

l!c

1'"41"

Im1.Z1

~

I

-A

~

J:LJ;\-~

.

/~

a i!

='

~!~

ZSCI22Z

> -

....

211

~',

!

g"

Lr:'\s

.-

+ :

/~

.Ill

=~;;

I!

III

~r-

C'"

;I

%~p

I"

,nllll

~

~

" :

I,

;

~,:.;

:.2

:!

~

r:x~i-

~f-

~

_

::;5

:!!EK\!I~

~

G()~

I i

l..------------t----------t----t----'

:

.!

~~

~T~~!-'

~.,~]:l~

.....,

l I

I

~

L - +1,-

-<

-.,-

- - --~-

C;>-_-_-_-f

.....

lII"'+--t"IM"l;>_·-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_.J--I----t

.....

i

~L....+-------~

~,

(1.IIDIll2.5.1

1.1ll )

(1.I,2.Dlf)

(l.Aull!.

2.P_II.

I.PItotoI.

UUIII,

5.AIllI.

I.MIC)

(1.IIDZ.

2.S1IlI1U,

I.2ta1)

(1.MlIti1or1,

Z.S

....

,

I.M~)

(1.1...,..,

Z.NonuI,

1.1

+l,

UlooaI,

5.MIIII1Il)

(1.o.t,2JI)

(1.1."

Z.FlaI,

l.Up)

(l.Itfftil.2.'I)

(1.I5.H"

Z.ID.H,.

I.II.H,)

(1.1.5IHz,

Z.IIH',

I.IIH')

(U.H"

2.1Itl1ttt.

1.25H')

(1.1IH,.

Z.1ItIltat.

I.1ZKH,)

- -

-1-

1

-

1 I I

Ae

LIME

BDH'-lINI

I'"

.

I'M

...

low

Cut

Hill

Cil

.ow.

Plito

,""

'"P

S\If

UpT~..

S'"

I.

MDtiIor

-

-1--

STa,

lb.

S2,.

2b,

2e,

2d,

S3,.

3b,

3e,

3d,

3e,

31,

S4"

4b.

4e.

4d,

S5a,5b,
S8
S7,.7b,
Sea.

8b.

8e,

8d,

Sea,

8b.

ge,

ed,

SIO',

lOb,

Sll'.llb.

S12',

12b.

12e,

12d,

S{3',

13b.

13e,

13d,

S14

L _

I

111

nlll

11.,lIlIlll I

I

5~(;?

I,

r-t;~~

If2

~l

I

t-----t------'

~

:

1

I

1

I

I

I

Sr.

Z

~~.,OOI~

Slb~

1,,11.lll

~A)

~

~

{/

o

t---....,.+H-----1------!~;;;",.-=--

-

~

~

PH

010-

I

lUX-

II

PHONO-

II

IIC

lUX-III

lUX-

I

IIC

JlCK

M

ONITOR-l

REC

OUT-II

REC

OUT-

I

MOIITOR-

II

MONITOR-

I

REC

OUT-

I

MONITOR-

II

REC

OUT-II