Aiwa CX JN20 Service Manual

CX-JN20/JN30

SERVICE MANUAL

Ver 1.0 2004.03

CX-JN20/JN30 are the tuner, amplifier, cassette
deck and CD player section in JAX-N20/N30. Photo: CX-JN30

Model Name Using Similar Mechanism CX-JN3

CD
Section

Tape deck
Section

CD Mechanism Type CDM74S-K6BD71A
Base Unit Name BU-K6BD71A
Optical Pick-up Block Name KSM-213DCP
Optical Pick-up Name KSS-213D
Model Name Using Similar Mechanism CX-JN3
T ape Transport Mechanism Type CWM43FF13

AEP Model

CX-JN20/JN30

UK Model

CX-JN30

TUNER

FM tuning range 87.5 MHz to 108 MHz
FM usable sensitivity (IHF) 16.8 dBf
FM antenna terminal 75 ohms (unbalanced)
AM tuning range 531 kHz to 1602 kHz
AM usable sensitivity 350 µV/m
AM antenna Loop antenna

AMPLIFIER

Power output CX-JN30

Rated: 32 W + 32 W (6 ohms, T .H.D.
1 %, 1 kHz/DIN 45500)
Reference: 40 W + 40 W (6 ohms,
T.H.D. 10 %, 1 kHz/DIN 45324)
MUSIC POWER: 100 W +100 W

CX-JN20

Rated: 20 W + 20 W (6 ohms, T .H.D.
1 %, 1 kHz/DIN 45500)
Reference: 25 W + 25 W (6 ohms,
T.H.D. 10 %, 1 kHz/DIN 45324)
MUSIC POWER: 50 W + 50 W

Total har monic distortion 0.08 % (16 W, 1 kHz, 6 ohms, DIN

AUDIO)
Input VIDEO/AUX: 400 mV
Outputs SPEAKER: 6 ohms or more

PHONES: 32 ohms or more

SPECIFICATIONS

CASSETTE DECK

Track format 4 tracks, 2 channels stereo
Frequency response 50 Hz – 8 kHz
Recording system AC bias
Heads Deck A: playback x 1

Deck B: recording/playback x 1,
erase x 1

CD PLAYER

Laser Semiconductor laser (λ = 780 nm)

Emission duration:

continuous
D/A converter 1 bit dual
Signal-to-noise ratio 85 dB (1 kHz, 0 dB)
Harmonic distortion 0.05 % (1 kHz, 0 dB)

GENERAL

Power requirements 230 V AC, 50/60 Hz
Power consumption CX-JN30

65 W

CX-JN20

60 W
Power consumption With ECO mode on: 0.25 W
in standby mode With ECO mode off: 15 W
Dimensions (W x H x D) 280 x 330 x 392.5 mm

Weight CX-JN30

6.6 kg

CX-JN20

6.5 kg

Specifications and external appearance are subject to change
without notice.

COPYRIGHT

Check copyright laws relevant to recordings from discs, tuner
or tape for the country where the unit is to be used.

Licensed by BBE Sound, Inc. under USP4638258, 5510752
and 5736897.

9-877-599-01 Sony Corporation

2004C05-1 Home Audio Company
© 2004.03 Published by Sony Engineering Corporation

COMPACT DISC DECK RECEIVER

CX-JN20/JN30

)

3-10. TABLE ASSY

two claws

5

A

2

Pull-out the table assy.

6

table assy

3-11. MOTOR (TB) BOARD

1

screw
(PTPWH M2.6)

2

table (loading)

1

Turn the loading gear
in the direction of arrow

3

belt (table)

4

hook

3

wire (flat type) (5 core
(CN702)

A

.

14

4

connector
(CN731)

6

5

two screws
(BTTP M2.6)

MOTOR (TB) board

3-12. MOTOR (LD) BOARD

4

MOTOR (LD) board

3

two screws
(BTTP M2.6)

CX-JN20/JN30

1

3-13. BASE UNIT (BU-K6BD71A)

belt (loading)

2

connector
(CN704)

8

base unit (BU-K6BD71A)

4

three insulators

3

three coil springs
(insulator)

2

three stoppers (BU)

1

threescrews
(BTTP M2.6)

7

insulator

6

coil spring
(insulator)

5

screw
(PTPWH M2.6)

15

CX-JN20/JN30

)

3-14. MOTOR GEAR ASSY (SLED) (M701), BD BOARD

7

gear (A)

6

claw

2

two screws

×

3)

(P2

qa

BD board

1

Remove two
solders.

8

gear (B)

5

wire (flat type) (16 core
(CN708)

0

motor gear assy (SLED)
(M701)

4

9

Remove two solders.

3

screw (P2.6 × 6)

16

SECTION 4

TEST MODE

CX-JN20/JN30

MC COLD RESET

• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.

Procedure:

1. In the standby status, while pressing the x button, press the

[POWER] button.

2. The set is reset, then becomes standby status.

GC TEST MODE

Procedure:

1. Press the [POWER] button to turn the power on.

2. While pressing the x button, press the [POWER] button for

5 seconds.

3. It change displays in order of model type, version and suffix at

2 seconds interval, then the display is back to normal status.

AMP TEST MODE

Procedure:

1. In the status where AC plug is disconnected, while pressing

the [VIDEO/AUX] button, connect the AC plug to turn the
power on. Then enter the AMP test mode and display “AMP
TEST”.

2. If turn the [VOLUME] knob clockwise, it displays “V OLUME

MAX”, and if turn the knob counterclockwise, it displays
“VOLUME 0”.

3. If the [TREBLE] and [BASS] knobs are turned clockwise or

counterclockwise, it change displays in order of “EQ MAX”,
“EQ MIN” and “EQ FLAT”.

4. To release from this mode, disconnect the AC plug and turn

the power off.

FUNCTION CHANGE MODE

• Select either TV, VIDEO or AUX (MD) of the external function
input.

Procedure:

1. Press the [POWER] button to turn the power on.

2. While pressing the [VIDEO/AUX] button, press the [POWER]

button.

3. Each time this operation is operated, it change displays in or-

der of “TV”, “VIDEO” and “AUX”.

DISC TRAY LOCK

Procedure:

1. Press the [POWER] button to turn the power on.

2. While pressing the x button, press the OPEN/CLOSE Z
button for 5 seconds.

3. The message “LOCKED” is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked)

4. To release this lock, while pressing the x button, press
the OPEN/CLOSE Z button for 5 again.

5. The message “UNLOCKED” is displayed and the tray is un­locked.

CD REPEAT 5 LIMIT CANCEL MODE

• Number of repeat for CD playback is 5 times when the repeat

mode is “REPEAT”. This mode enables CD to repeat playback
for limitless times.

Procedure:

1. Press the [POWER] button to turn the power on.

2. In the repeat on status, while pressing the x button, press the

[CD] button to enter the CD repeat 5 limit cancel mode and

repeat mark blinks on the fluorescent indicator tube.

3. To release this mode, press the [POWER] button to turn the
power off.

17

CX-JN20/JN30

CD TEST MODE

• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.

Procedure:

1. In the status where AC plug is disconnected, while pressing

the [CD] button, connect the AC plug to turn the power on.

2. When enter this mode, it displays “CD TEST” and few sec-

onds later, all segments turn on of the fluorescent indicator
tube.

3. To release fr om this mode, disconnect the AC plug and turn

the power off.

In this mode, it operates as following table.

Button Operation Purpose of use

M Move the pick-up to outside track Sled circuit check
m Move the pick-up to inside track Tracking circuit check

Mechanism operation check
Optical pick-up check

N Playback a CD Servo block check

If it cannot focus on, it continuous focus search

x When playback a CD: stop playback APC circuit check

When stop a CD: Laser current measure
display “READING” (blink) Focus search waveform check
continuous laser diode on Tracking balance check
continuous focus search (not made focus on)

X Pause, Tracking servo off

(ignore CLV error)

18

6-6. SCHEMATIC DIAGRAM – BD Section – • See page 40 for IC Block Diagram. • See page 40 for Waveforms.

CX-JN20/JN30

R732

0

R731

2.2k

C753

R707

10

C709

C746 C708 R729

100

0.1 0.1 12k

0.0047

6.3V

C704

47

6.3V

R727C703

1000.1

S701

R708C710

10k0.047

TP

(RF)

TP

(VC)

TP

(FE)

TP

(TE)

R738

6.8k

SLCO

SLCIST

EFMIN

RF

RFVDD

RFVSS

FIN1

FIN2

TIN1

TIN2

VREF

REF1

FE

TEC

TE

RFMON

JITTC

ADAVDD

ADAVSS

TDO

R730

1.2k

D
D
L

O

FD

0

R739

Q701

UP0411600S0

AUTOMATIC

POWER

C705

0.001

C723

100

6.3V

F

C

(LD)(PD)

E

C

C

D

V

C

N

V

G

C
N

D

B

A

CN708

16P

VC

VCC

E

D

A

B

C

F

GND

LD

VR

PD

F+

T-

T+

F-

R745

100

C714

0.1

C701

0.1

C702
100

6.3V

C706

0.1

CONTROL

(LIMIT IN)

C711

0.1

C712

47p

R702

15k

R703

R704

R705

R701

R706

C716

C715

C717

C718

C719

C720

15k

15k

15k

47k

47k

0.001

1 50V

0.0047

1

0.0047

100p

R709
27k

R711
330

C713

0.1

C721

C744

1

T

S

LD

O
D
P
S

6.8k

R740

S

R

D

F

S

D

IS

V

V

K

V

V

C
P

S
E

C

4

R

A

T

O

3

D

N

D

P

P

L

O

S

G

C

M

0

R741

47p

C754C742

47p0.1

C743

0.047

R725R726

680680

C741

0.1

R728

47k

2

1

E
T

O

O

U

D

D

P

P

M
_
D
C

LC78646E-E

6
T
N
O

T

/C

/FG

C

K

K

E

C

F
E

BC

B

S

S

D

R760

CD DSP

IC721

100

5

2

W

T

D

SS

N

S

V

D

O

V

IT

C

LIM

I1

I2

N

N

P

EQ

O

O

/*
V

M

FS

M

C756

47p

I

O

F

Q

S

D

D

R

R

E

D

R

W

_

_

D

D

C

C

100

100

100

100

R718

R719

R716

R717

F

Q

O

R

ES

R

D

D

R
*

*W

I3

I4

I5

N

N

N

S

O

O

O

S

M

M

M

V

C722

0.1

L

E

C

C
_
D
C

R721

C771
100p

100

R720

I
D

CL

FSX/16MIN

T
U

D

O

D
V

D

ASDACK

ASLRCK

16MOUT

TEST

CE

DATACK

LRSY

ASDFIN

XVSS

XOUT

XVDD

RVDD

RCHO

RVSS

LCHO

LVDD

R722

1k

100

C856

1

C823

47p

R823

100

R824

DATA

EFLG

C2F

XIN

LVSS

C781

0.1

C824

100

47p

FB801

R829

100

R713

0.1

C902

C732

0.01

C729

220
10V

R747

33

C739

0.1

R746

33

R825

100

R826

R827

R828

C830

C829

FB807

R765 C734

1M 15p

1k

16.9344MHz

R715

100

R714

100

FB701

C825

47p

100

100

100

22p

47p

C831

22p

X701

C735

18p

FB802

C811

C862

0.1

0.1

C812

C810

1

0.1
R818

150

R817

3.3k

R819R820

1k1k

C816

0.1
C814

100

6.3V

C815

220
10V

C813

0.1

C837

0.1

DATACK

LRSY

ADDATA

ADBCK

ADLRCK

C2FIN

TEST1

CKIN

VSS

CKOUT

TEST2

DVDD1

PW

SBSY

SFSY

SBCK

AVDD

VPRFR

VCOC

VPDO

AVSS

DVDD2

E
C
_
3
P

M

R834

100

C844

0.1

IN

SB

A

E

T

R

A
D

0
A
T
A

S

D

S
V

M

1

I/O

C807

C802

100

0.1

6.3V

22p

C804

22p

C859

22p

C858

22p

C857

R833 R832

100 2.2k

E

L

B
T

IN

A1
T
A
D

M

2

I/O

T

K

IN

C

A2
T
A
D

M

3

I/O

VF

C

U

O

D

O

O

M

NT

D

C

C

CM

MP3 DECODER

IC801

LC78684E-E

3

4

5

6
A
T
A
D

M

4

I/O

7

A

A

TA

AT

A

ATA

AT

D

D

D

D

M

M

M

M

8

7

6

5

I/O

I/O

I/O

I/O

C
N
Y

FS

R860

100

C860
100p

C861

6

K

SS

O

V

W

3
D
D

S
V
D

VS

T

C

CF

A

D

R

D

D

YN

C

V

ST

FS

D

0

1
1

9
A

A1

A8
T

TA

A

A

AT

AT

D

D

D

D

M

M

M

M

2

1

0

1

1

1

9

I/O

I/O

I/O

I/O

0.1

CK
T
S

2
1

TA
A
D

M

3
1

I/O

+1.8V REGULATOR

S

Q
E

S
V

R

ST

MADRS10

MADRS11

MADRS12

3

4

1

1

A

TA

AT

A

D

D

M

M

5

4

1

1

I/O

I/O

IC803

MM1571J

VIN

GND

CONT

C843

0.1

DVDD5

MADRS0

MADRS1

MADRS2

MADRS3

MADRS4

MADRS5

MADRS6

MADRS7

DVDD4

MADRS8

MADRS9

CASUB

CASLB

WEB

RASB

MDATA15

6
1

I/O

NOISE

VSS

OEB

VO

C806

0.1

C805

C803

100

0.01

6.3V

A0

A1

A2

A3

A4

A5

A6

0.1

A7

C817

A8

OE

UCAS

LCAS

WE

RAS

M701

(SLED)

M702

(SPINDLE)

C707
100

6.3V

SLED/SPINDLE

MOTOR DRIVE,

FOCUS/TRACKING

COIL DRIVE

IC722

BA5836FP

0.1

C740

5

7

E

C835

0.1

C834

220
10V

4

D
N
G

(-)
1
O
V

S

IN

(-)

L

IN

IA

4

4(+)

S

B

O

O

V

V

)

-B

ET

(+
1

IN

S

G

E

E

P

O

S

R

R

V

3

C

C

IN

C

T

V

VC

T
U

E

O

T

D

G

U

E

N

R

M

G

R744
100k

T

P

(-)

E

(-)

O

IN

3

3(+)

IN

ES

O

O

V

R

V

T

2
IN

N

P

O

G

FO

O

V

VO

FB707FB708

FB804

C748

C747

220

0.1
10V

U

(-)

(+)

D

O

2

2

IN

FB803

FB805

R807

100

R806

100

FB806

6

5

4

3

1

1

1

1

1

I/O

I/O

I/O

I/O

5

14

1

16

SS
V

I/O

I/O

I/O

3

2

1

C
C

I/O

V

I/O

I/O

3

4

2

1

I/O

I/O

I/O

I/O

0

12

1

1

I/O

I/O

I/O

1

3

S

1

12

1

S
V

I/O

I/O

I/O

6

4

5

C
C
V

I/O

I/O

I/O

7

6

5

I/O

I/O

I/O

9

I/O

10

I/O

I/O7

8

I/O

S
A
C
L

100

R805

9

C
N

I/O

8

C
N

I/O

R801 R802

100 100

S

C

A
C
U

100

100

R804

R803

E

S

S

O

A

A
C

LC

U

S

E

A
R

W

NC

S

E

A

W

R

A4

A

A6

A

A8

CN710

8

7

6

5

4

A

A

C

0

N

A

0
A

S

A

A

A

S
V

MEMORY

IC802

C

1

2

A

A

2

1

A

A

LC32V4265CT

3

C

A

V

A3

CD_CE

DRF

CD_WRQ

-25
FSYNC

MP3_CE

CL

DO

DI

CD_RES

CD_CE

FSYNC

MP3_CE

CD_RES

A-GND

D-OUT

AMUTE

D-GND

P-GND

19P

DRF

WRQ

CL

DO

DI

3.3V

CD-R

CD-L

(Page 31)

3.3V

6.4V

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

2525

6-8. SCHEMATIC DIAGRAM – CHANGER Section – • See page 40 for IC Block Diagrams.

LOADING MOTOR

DRIVE

IC701

BA6956AN

VREF

OUT2

OUT1

CX-JN20/JN30

FIN

VM

VCC

GND

RIN

IC731

RPI-576

TABLE ADDRESS SENSOR

M741

(TABLE)

SENS-IN

SENS-OUT

CN731

3P

GND

M751

(LOADING)

CN741

3P

SENS-IN

SENS-OUT

GND

DISC TRAY

ADDRESS DETECT

S751

OPEN/CLOSE

DETECT

OPEN

CLOSE

S711

CN721

2P

LM-2

LM-1 LM-1

E3

E2

E1

CN742 CN702

5P 5P

TM-2

TM-1

SENS-IN

SENS-OUT

GND

CN751 CN705

2P 2P

OPEN SW OPEN SW

GND GND

CN704

2P

LM-2

CN703

4P

E-3

E-2

E-1

GND

TM-2

TM-1

SENS-IN

SENS-OUT

GND

0.1

C735

0.1

C736

0.1

C737

R735

100

4.7k

R723

4.7k

R722

4.7k

R721

R702 R701

100 470

DRIVE

IC712

BA6956AN

D701

MTZJ-T-77

5.1A

R712 R711

4.7k 1k

R713

22k

C751

0.01

TABLE MOTOR

D711

MTZJ-T-77

3.6B

R734 R732

12k 10k

R733

1k

VREF

DTC114ESA

OUT2

R731

C741

0.01

100

Q731

LEVEL

SHIFT

RNF RNF

OUT1

FIN

VM

VCC

RIN

GND

C731

10

50V

C752 R751

0.1 4.7k

C715

100
16V

TBL ADDRESS SENS

CD-VM

LM-R

TM-R

OPEN SW

GND

LM-L

TM-L

3.3V

CN701

12P

E-1

E-2

E-3

(Page 31)

2727

CX-JN20/JN30

6-9. SCHEMATIC DIAGRAM – MAIN Section (1/4) –

(JN30)

(JN20)

(Page 39)

(Page 39)

VM(AC)

VM(AC)

VH(AC)

VH(AC)

VL(AC)

VL(AC)

GND(M)

FIL-1

FIL-2

P-ON

VSTBY

WH013

WH012

VH(AC)

VH(AC)

VL(AC)

VL(AC)

GND(M)

FIL-1

FIL-2

P-ON

VSTBY

(1/4)

R017

0.33

(JN20)

0.47

(JN30)

D021 D022

EGP20D EGP20D

(JN20)

JW001

JW002

0.33

11P

9P

)

006

003

20
N

JW

JW

(J

(JN30)

JW004

JW005

C011 C012 C033

0.1 0.1 0.1

(JN30)

C015 C016

0.1 0.1

D009

D5SBA20

C013 C014 C034

0.1 0.1 0.1

D015 D016

1N5402 1N5402

D019

EGP20D

C007

D020

3300

EGP20D

25V

∗

R026,027,029,030

∗

470

(JN20)

390

(JN30)

50V

15k

R012

15k

R016

D018D017

1N54021N5402

8.2k

R052

(JN20)

C017 C018

0.1 0.1

3300

15k

15k

15k

C003

R011

R010

R009

C026

47

25V

VM

VDD

D023 C035

11EQS04 0.1

R025
270

R024
270

IC003

TA7804LS

OI

G

C029

47
10V

50V

3300

15k

15k

15k

C004

R015

R014

R013

8.2k

8.2k

8.2k

R053

R054

R055

C005
4700

35V

C006
4700

35V

(JN20)

R056

8.2k

JR002

0

+9V REGULATOR +9V REGULATOR +4V REGULATOR

IC001 IC002

TA7809 TA7809

OI

G

C023 C022

100
35V

JW023

CD-VM

OI

G

100
16V

R028

470

(JN20)

(JN30)

330

R028

R030R029R027R026

∗

∗∗∗∗

VSS

4V

-VFL

ER

STBY

V-

O-POW

Q023,024

B+ SWITCH

2SC3052

Q023

2SA1015

R036

18k

Q024

1SS355

R035

8.2k

D031

1SS355

R031

10k

C030

0.0047

Q022

2SC3052

RELAY

DRIVE

R032

47k

1SS355

D032

68k

R033

C031

47
25V

VCC

HOLD

D033

C032

33

25V

A1

A2

A3

A4

A5

A6

(Page 29)

R001,004,005,008

∗

R001

∗

(JN30)

R002

1.8

F1

R004

∗

(JN20)

1.5

(JN30)1.8

R005

∗

(JN30)

F2

R007

1.8

R008

∗

∗

C041,043

(JN20)

100 35V

33 35V

(JN30)

∗

C042,044

(JN20)

100 35V

(JN30)

22 35V

VH2

VH1

VH1

C043 C044

∗∗

R043 R044
100k 100k

VH2

D042D041

10EDB4010EDB40

R042R041
100k100k

C042C041

∗∗

D043

10EDB40

D044

10EDB40

C008
1000

25V

Q045

(JN30)

D063

MC2836

1SS355

R072

5.6k

R067

39k

R071

27k

R070

27k

R073

27k

D065

2SA1235 2SC3052

R074
27k

D066

1SS355

R076

1k

D069

1SS355

Q063,064

Q063 Q064

DC DETECT

R068

39k

C045
100
50V

C046
100
50V

R046

4.7k

R045

(JN20)

56

82

(JN30)

4.7k

3.3k

R047

Q041

2SA1015

(JN20)

(JN30)

-33V REGULATOR

Q041,043

R038

0

D045

UDZSTE-1733B

R048

R049

4.7k

0

Q043

2SA1015

R051
100k

C047

100
10V

R050

10

R069

5.6k

2SC3052

Q045,046

HOLD

R075

5.6k

R078

0

R079

R077

0

1k

C062

R093R092

15k100

R095

15k

C061

25V

R080
100k

R094

1

10k

50V

D067D064

MC2838MC2838

47

33k

10k

R082

R086

C063

1

50V

R096

33k

Q047Q046

2SC30522SC3052

PROTECT

56k

R084

VH2

MC2836

33k

R083

R097

33k

(JN30)

D068

56k

10k

R085

R087

VH1

A8

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

2828

6-10. SCHEMATIC DIAGRAM – MAIN Section (2/4) –

CX-JN20/JN30

(Page 30)

O-POWER

CD-A-GND

TU/AUX-A-GND

FR-D-GND

FUNC-A-GND

SP-A-GND

CD-P-GND

CD-D-GND

FR-A-GND

(Page 28)

OUT-R

CD-VM

O-MUTE

V-STBY

OUT-L

HOLD

4.7k

Q118,120

Q112

2SC2909

CASCADE

BIAS

Q118

2SC3052

2SB792A

OVER CURRENT

DETECT

2SC3052

Q281

R259

47k

D107

MC2838

2SC3052

Q119

2SC3052

Q117

Q120

R262

4.7k

R261R258R257R252

4.7k47k47k10k

R264R263R260

4.7k4.7k47k

C133 C127

0 100p

C121

0.1

R147

0

C135

C129
100p
100V

D108

MC2838

C134

0

0.1

R148

0

C136

0

C130
100p
100V

10k (EXCEPT E51,MX)

(E51,MX)12k

R290

47k

100V

Q121

2SB1677

FINAL DRIVE

C128

R282

12k

R283

DTA114EKA

THERMAL DETECT

Q291

Q291,292

R151

0.22
3W

R149

0.22
3W

FINAL DRIVE

R152

0.22
3W

D281

MC2838

Q124

2SD2619

FINAL DRIVE

R153

3.9k

Q122

2SB1677

FINAL DRIVE

R291

2.2k

Q292

2SB792A

Q123

2SD2619

R155

1.2k

C125

0.01

R154

3.9k

R156

1.2k

R293 R294

82k 82k

R292

10k

OVER LOAD

R150

0.22
3W

Q129

2SB792A

DETECT

C126R158

0.01100

Q130

2SB792A

OVER LOAD

DETECT

C282

0.0022

R296

47k

291
D

R157

100

R161

5.6k

D111

MC2838

R162

5.6k

C241

0.47

C097

0.1

WH201

R-OUT

L OUT

(CHASSIS)

EP099

(CHASSIS)

5P

GND

R-IN

L-IN

(Page 33)

R159

1k

R160

1k

JW201JW202

R201

10

C205

0.01

C209

0

C206

0.01

C210

0

C207 C208

0.01 0.01

L201

1.7µH

EP001

J203

4P

+

L

-

+

-

SPEAKER

R

(CHASSIS)

(CHASSIS)

R202

10

L202

1.7µH

C201

0.1

C203

0.1

R203

10

R204

Q282

2SD814A

HOLD

R284

4.7k

101

TH102

TH

R297
47k

2836
C

M

292

C2838

D

M

10

C204

0.1

C202

0.1

(JN30)

∗

2SA1235F

(JN20)

(JN30)

Q235

R131

4.7k

R133

1.8k

C119

R137

0

2.2k

C119
100p
100V

(JN30)

R144R142

R253

10k

Q117,119

BIAS

Q111

2SC2909

CASCADE

33

R132

R134

1.8k

R138

2.2k

33

C281

0.0047

R281

2.2k

D243

MC2838

R248R246

4.7k4.7k

D244

MC2836

2.2k

50V

C111
100p

33

C113

2SC3052

R115

R124

6.8k

R122

1k

Q102

2SA1235

C112
100p

R116

∗

D231 R236

1SS355 2.2M

D232

UDZS-1710B

D235

R123

6.8k

R121

1k

Q105

∗

R237

1k

R238

2.2k

Q232

2SK2937

SWITCHING

Q106

2SC3052

D236
RK46

Q101

2SA1235

Q102,104

PRE DRIVE

Q106,108

CURRENT

MIRROR

UDZS-175.6B

(2/4)

R119

110
R

Q231

2SK2937

100

C231

10

63V

R117

2.2k

R109

100

D101

MC2836

R120 R118

2.2k 2.2k

C114

33

50V

S

D236

JW232

C105

R183 C181

∗∗

R183,184

∗

(JN20)

6.8k

(JN30)

3.9k

∗

CD-VM

O-POWER

O-MUTE

V-STBY

HOLD

4V

VSS

VDD

F1

F2

VM

-VFL

C131
100p

C132
100p

O-MUTE

HOLD

VCC

4V

VSS

VDD

F1

F2

VM

-VFL

A1

A2

A3

A4

A5

A6

C181,182

1 50V

(JN20/JN30:CIS)

2.2 50V

(JN30:AEP,UK)

C103,104

∗

1500p

(JN20)

1000p

(JN30)

∗

R115,116

(JN20)

22k

(JN30)

27k

∗

R105,106

15k

R186

47k

JR104

0

R189

0

R188

22k

(JN20)

(JN30)12k

2SA1235

MUTING

CONTROL

Q183

R181

12k

R182

12k

R185

R184 C182

∗∗

R280

10k

68k

Q181

2SD1306

MUTING

Q182

2SD1306

MUTING

NE

NE

2.2
50V

R113

27k

∗

1.2k 0

C109

R107

C103

R105

C230

10

63V

10

∗

50V

∗

27k

104
C

R108

R106

∗

C106

2.2
50V

R114

1.2k

C110

10
50V

SWITCHING

JW231

(JN20)

(JN30)

C115 R125
820p 1.5k

Q105,107

CURRENT

MIRROR

R130R128

100100

C232

0.1

D239

S

Q107

2SC3052

Q101,103

PRE DRIVE

R129R127

100100

C116 R126
820p 1.5k

Q108

2SC3052

R239

2.2k

1SS355RK46

UDZS-175.6B

D241D235

D240

2SA1235

Q233

2SA1235

D105

MC2836

Q103

2SA1235

C117
100p
100V

AU-01Z

D109

D103

1SS355

*

139

Q109

R

2SD814A

CASCADE

∗

R139,140

(JN20)

0

R141 R143

(JN30)47k

∗

D106

MC2836 100p 100V

Q104

1SS355

D104

R141,142

∗

47k1k(JN20)

(JN30)

D242

0

Q233-235

OUTPUT LEVEL

DETECT

R243

Q110

2SD814A

CASCADE

D110

AU-01Z

(JN30)

C120 C122

C118

100p

100p

100V

100V

C120

R140

0

∗

(JN20)

R242R241

10k3.3k

Q234

2SC3052

R250R249

4.7k4.7k

R244

2.2k

1k

A8

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

2929

CX-JN20/JN30

6-11. SCHEMATIC DIAGRAM – MAIN Section (3/4) – • See page 40 for IC Block Diagram. • See page 40 for Waveforms.

(3/4)

(Page 29)

(Page 35)

L CH

R CH

R CH

L CH

HP1

(PB)

(DECK-A)

HRPE1

(REC/PB/ERASE)

(DECK-B)

SP-A-GND

TU/AUX-A-GND

CD-A-GND

FR-A-GND

FUNC-A-GND

CD-D-GND

CD-P-GND

FR-D-GND

O-POWER

CD-VM

O-MUTE

V-STBY

HOLD

-VFL

OUT-L

OUT-R

VSS

VDD

4V

F1

F2

VM

CN601

30P

-VFL

VF2

TU-SIG

VF1

TU-MUTE

STEREO

TUNER TUNE

PLL-CE

DATA

IFC

CLK

RDS-DATA

RDS-CLK

V-STBY(EVER)

HOLD

+4V

CD-NUMBER SENS

D-GND

STB-I/O

CD-VM

O-MUTE

O-POWER

BU-UP/DOWN SW

SPEANA

VF-ON

S-0UT

PB2

O-BIAS

MIC-OUT

A-GND

CN301

3P

CN302

8P

C304

0.0012

R304 R303
82k 82k

O-POWER

O-MUTE

V-STBY

OUT-L

OUT-R

RDS-SIG

TU-MUTE

STEREO

PLL-CE

RDS-DATA

RDS-CLK

V-STBY

TBL-SENS

O-MUTE

O-POWER

0.0012

39k

C301

R301

0.0012

39k

C302

R302

C303

0.0012

C321

0.1

CD-VM

TUNED

CD-VM

0.01

C687

4V

VSS

VDD

F1

F2

HOLD

VM

-VFL

-VFL

F2

F1

DATA

IFC

CLK

HOLD

4V

STB

BU-UP

S-OUT

PB2

O-BIAS

S

Q301

2SJ460

Q302

2SJ460

S

Q309

2SK2541

Q307

2SK2541

Q301-304

PB SWITCH

S

S

JR601

JR611

0

0

FB601

0

S

Q303

2SK2541

Q304

2SK2541

S

Q305

2SJ460

2SK2541

Q305,306

MUTING

S

Q308

SS

C305
470p

R305
220k

Q307-309

MUTING

C311R311

1000p10k

L311

BIAS OSC

Q306

2SJ460

C306

0.001

D301

MC2836

R653

22k

R654

22k

R655

22k

R656

22k

C608R610R609C607

C603

R607
100k

R652

100

R651

100

R631

470

C322

0.1

R603 R605

100

390k 1.2k

10V

R601

100

C605

0.0068

C621
180p

R627

2.2k

R629

10k

1.2k

330

R635

R637

3.3k

3.3k

8200p

5600p

R633

R634

C625

C623

FB602 R621

0 5.6k

Q601

DTA114EKA

INVERTER

2

R659

B

2.2k

P

470p18k18k470p

R604R606
390k1.2k

C606

0.0068

C622

180p

R628

R632

2.2k

470

R630

10k

1.2k

330

R636

R638

5600p

8200p

C624

C626

C312
1000p

R312C313

R645 C734 C733

4.7k 0.1 0.1

R612

4.7k

C604

R608

100

100k

10V

R602

100

C601

47p

(L)

B1N

PB1P(L)

P

(R)

(L)

1O(L)

1N

EC

EC

EC1N

R

R

R

C314

10k470p

470p

47p

C602

)

2P(R
B
P

(R)

B2N
P

)

)

1O(R

EC

-IN(R

R

C

3.3k

(JN30:CIS)

3.9k

(JN20/JN30:AEP,UK)

C316

0.015

TP601

)

T(R

-OU
B
P

(L)

C-IN

*

R626

*

R625,626

B3

B4

B5

B6

B7

LGR

B8

6.8k

R665

6.8k

R664

D661

UDZS-174.7B

50V

50V

C610

C609

1

1

UT(L)

L-IN(L)

VO

PB-O

)

-IN(L)

B-IN(R

B

3.9k

*

R625

R624

C317R313

0.01527k

C611

C612

OL-IN(R)
V

3.9k

R623

C663

0.1

560p

560p

D
N
G

(R)

-IN
A

5.6k

R622

C661 C662

220
10V

0.0033

0.0033

C614

C613

E1(L)

TR

)

UT(L

A-IN(L)

O

R620

R619

R618

R617

R616

R615

C318

0.0047

D662

UDZS-174.7B

47

C664

25V

0.1

R663

10k

VEE

AUX-R

AUX-L

INPUT SELECT,

ELECTRICAL

VOLUME

BD3881FV

TU-R

TU-L

CD-R

CD-L

R315

39

C319

10

50V

D663

1SS355

R662

47k

IC601

0.22
50V

0.22

0.22
50V

50V

R643 R644

3.3k 3.3k

Q311

2SA1015

R317

Q311,312

1k

REC BIAS

SWITCH

Q312

2SC3052

C642C644C641C643

0.22
50V

R661

15k

)

T

D
D

ON

V

E1(R

C

TR

)

)

(L)

SS(R

UT(R

ASS

O

B

BA

27k

27k

15k

15k

15k

15k

Q310

2SC2001

BIAS OSC

R314

10

R667R666

2.7k2.7k

-R
T
U
O

R316

10k

C320

0.1

R318

4.7k

VDD

B9

B10

B11

VSS

(Page 31)

A
T
A
D

R658

22k

-L
T
U
O

CD-VM

O-BIAS

B12

B13

B14

B15

ERASE

C315

0.022

3030