Sony Aiwa CX-JN20 User manual

SERVICE MANUAL
Model Name Using Similar Mechanism CX-JN3
CD Mechanism Type CDM74S-K6BD71A
CD Base Unit Name BU-K6BD71A
Section Optical Pick-up Block Name KSM-213DCP
Optical Pick-up Name KSS-213D
Tape deck Model Name Using Similar Mechanism CX-JN3
Section Tape Transport Mechanism Type CWM43FF13
COMPACT DISC DECK RECEIVER
AEP Model
CX-JN20/JN30
UK Model
CX-JN30
CX-JN20/JN30
Ver 1.0 2004.03
9-877-599-01 Sony Corporation
2004C05-1 Home Audio Company
© 2004.03 Published by Sony Engineering Corporation
SPECIFICATIONS
CX-JN20/JN30 are the tuner, amplifier, cassette
deck and CD player section in JAX-N20/N30. Photo: 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:32W+32W (6ohms,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:20W+20W (6ohms,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 harmonic 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
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
Specificationsandexternalappearancearesubjecttochange
without notice.
COPYRIGHT
Checkcopyrightlawsrelevanttorecordingsfromdiscs,tuner
or tape for the country where the unit is to be used.
Licensed by BBE Sound, Inc. under USP4638258, 5510752
and 5736897.

CX-JN20/JN30
14
3-10. TABLE ASSY
3 wire (flat type) (5 core
)
(CN702)
4 hook
1 Turn the loading gear
in the direction of arrow
A .
A
5
two claws
2 Pull-out the table assy.
6 table assy
3-11. MOTOR (TB) BOARD
2 table (loading)
4 connector
(CN731)
1 screw
(PTPWH M2.6)
5 two screws
(BTTP M2.6)
6 MOTOR (TB) board
3 belt (table)

CX-JN20/JN30
15
3-12. MOTOR (LD) BOARD
3-13. BASE UNIT (BU-K6BD71A)
2 connector
(CN704)
3 two screws
(BTTP M2.6)
4 MOTOR (LD) board
1 belt (loading)
3 three coil springs
(insulator)
4 three insulators
8 base unit
(BU-K6BD71A)
1 threescrews
(BTTP M2.6)
2 three stoppers (BU)
6 coil spring
(insulator)
7 insulator
5 screw
(PTPWH M2.6)

CX-JN20/JN30
16
1 Remove two
solders.
qa BD board
2 two screws
(P2
× 3)
6 claw
7 gear (A)
8 gear (B)
5 wire (flat type) (16 core
)
(CN708)
0 motor gear assy (SLED)
(M701)
3 screw (P2.6 × 6)
9 Remove two solders.
4
3-14. MOTOR GEAR ASSY (SLED) (M701), BD BOARD

17
CX-JN20/JN30
SECTION 4
TEST MODE
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 xbutton, 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 xbutton, 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 “VOLUME
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.
DISC TRAY LOCK
Procedure:
1. Press the [POWER] button to turn the power on.
2. While pressing the xbutton, 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 xbutton, press
the OPEN/CLOSE Zbutton for 5 again.
5. The message “UNLOCKED” is displayed and the tray is un-
locked.
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 xbutton, 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.
FUNCTION CHANGE MODE
•Select either TV,VIDEO orAUX (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”.

18
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 theAC 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 from this mode, disconnect the AC plug and turn
the power off.
In this mode, it operates as following table.
Button Operation Purpose of use
MMove the pick-up to outside track Sled circuit check
mMove the pick-up to inside track Tracking circuit check
Mechanism operation check
Optical pick-up check
NPlayback a CD Servo block check
If it cannot focus on, it continuous focus search
xWhen 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)
XPause, Tracking servo off
(ignore CLV error)

CX-JN20/JN30
2525
CN708
C711
C712
C721
C719
C720
C718
C717
C715
C716
C714
C706
C707
R739
R740
R741
M702
M701
R738
C747 C748
R707
C705
C709
R730
C746 C708 R729
C743
C744
R725R726
R731
C754C742
C753
R760
C756
C722
FB707FB708
R720
R719
R718
R721
C830
R826
R827
R828
R825
C825
R823
R824
C829
FB701
R765 C734
C735
X701
C732
C729
C811
R817
R818
C812
R819R820
FB807
FB802
C844
C856
C810
R801 R802
C837
R803
R804
R805
C813
C814
C843
C803 C805
C815
C816
R834
R833 R832
IC803
FB803
FB805
FB806
IC802
CN710
C802
C807
R732
C806
C817
R717
R716
C741
R728
R745
R701
R706
R708C710
R727C703
C723
R711
R703
R704
R705
C702
C701
R702
FB804
C831
C704
R709
S701
R714
R715
TP
(RF)
TP (VC)
TP (FE)
TP (TE)
C713
R829
R747
R746
R713
C823
C824
R744
IC801
C804
C859
C858
C857 C860
R860
C835
C834
R722
IC722
R806
R807
C902
Q701
C861
C771
IC721
C740
C781
C739
FB801
C862
16P
0.1
47p
0.1
0.0047
100p
1
0.0047
150V
0.001
0.1
0.1
100
6.3V
0
6.8k
0
6.8k
0.1 220
10V
10
0.001
100
6.3V
1.2k
0.1 0.1 12k
0.047
1
680680
2.2k
47p0.1
47p
100
47p
0.1
100
100
100
100
22p
100
100
100
100
47p
100
100
47p
1M 15p
18p
16.9344MHz
0.01
220
10V
0.1
3.3k
150
1
1k1k
0.1
1
0.1
100 100
0.1
100
100
100
0.1
100
6.3V
0.1
0.01 100
6.3V
220
10V
0.1
100
100 2.2k
MM1571J
LC32V4265CT
-25
19P
0.1
100
6.3V
0
0.1
0.1
100
100
0.1
47k
100
47k
47k
10k0.047
1000.1
100
6.3V
330
15k
15k
15k
100
6.3V
0.1
15k
22p
47
6.3V
27k
100
100
0.0047
100
33
33
1k
47p
47p
100k
LC78684E-E
22p
22p
22p
22p
100p
100
0.1
220
10V
1k
BA5836FP
100
100
0.1
UP0411600S0
0.1
100p
LC78646E-E
0.1
0.1
0.1
0.1
DRF
DRF
CD_RES
CD_RES
CD_WRQ
CD_WRQ
DO
DO
DI
DI
CL
CL
CD_CE
CD_CE
WE
RAS
A0
A1
A2
A3 A4
A5
A6
A7
A8
CE
UCAS
LCAS
I/O9
I/O10
I/O11
I/O12
I/O13
I/O14
I/O15
I/O16
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
I/O9
I/O10
I/O11
I/O12
I/O13
I/O14
I/O15
I/O16
MP3_CE
MP3_CE
FSYNC
FSYNC
A0
A1
A2
A3
A4
A5
A6
A7
A8
OE
UCAS
LCAS
WE
RAS
F
GND
VC
VCC
E
C
B
NC
A
D
VC
VCC
E
D
A
B
C
F
GND
LD
VR
PD
F+
T-
T+
F-
(SLED)
(SPINDLE)
GND
SLIN
IN4
BIAS
VCC
VCC
TIN
IN3
RESET
VO3(+)
VO3(-)
VO4(-)
VO4(+)
SPIN
RESET
REG-B
REGOUT
MUTE
GND
IN2
FOIN
GND
OPOUT
VO2(-)
VO2(+)
VO1(+)
VO1(-)
IN(-)
OP
SLCIST
EFMIN
RF
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
REF1
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
FDO
SPDO
SLDO
GPDAC
CONT4
MP3RES
DEFECT
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
VSS
VDD
DOUT
TEST
V/*P
SBCK/FG
LDS
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT2
VSS
VDD5
DRF
DO
DI
CL
CE
LIMIT SW
CD_MUTE
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LCHO
LVDD
FSX/16MIN
DRF
FSYNC
CL
DO
DI
3.3V
3.3V
AMUTE
CD_CE
CD_RES
MP3_CE
VIN
GND
CONT
VO
NOISE
VSS
I/O16
I/O15
I/O14
I/O13
VSS
I/O9
I/O10
I/O11
I/O12
NC
LCAS
UCAS
OE
A8
A7
A6
A5
A4
VSS
VCC
I/O1
I/O2
I/O3
I/O4
VCC
I/O5
I/O6
I/O7
I/O8
NC
NC
WE
RAS
NC
A0
A1
A2
A3
VCC
MADRS0
MADRS1
MADRS2
MADRS3
MADRS4
MADRS5
MADRS6
MADRS7
MADRS9
MADRS8
DVDD4
VSS
MADRS10
MADRS11
MADRS12
OEB
CASUB
CASLB
WEB
RASB
DATACK
DATAIN
RESB
INTB
CE
CL
CMDIN
CMDOUT
OVF
CNTOK
WOK
VSS
DVDD6
CRCF
FSYNC
STDAT
STCK
STREQ
VSS
DVDD5
DVDD2
VSS
MDATA0
MDATA1
MDATA2
MDATA3
MDATA4
MDATA5
MDATA6
MDATA7
DVDD3
VSS
MDATA8
MDATA9
MDATA10
MDATA11
MDATA12
MDATA13
MDATA14
MDATA15
LRSY
ADDATA
ADLRCK
C2FIN
TEST1
CKIN
VSS
CKOUT
TEST2
DVDD1
PW
SBSY
SFSY
SBCK
AVDD
VPRFR
VCOC
VPDO
AVSS
+1.8V REGULATOR
ADBCK
LVSS
*WRQ
*RES
LDD
SLCO
SBCK/CONT6
SLED/SPINDLE
MOTOR DRIVE,
FOCUS/TRACKING
COIL DRIVE
AUTOMATIC
POWER
CONTROL
(LIMIT IN)
(LD)(PD)
MP3 DECODER
MEMORY
WRQ
CD-R
CD-L
A-GND
D-OUT
6.4V
P-GND
CD DSP
D-GND
6-6. SCHEMATIC DIAGRAM – BD Section – •See page 40 for IC Block Diagram. •See page 40 forWaveforms.
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replaceonly with partnumber specified.
(Page 31)

CX-JN20/JN30
2727
6-8. SCHEMATIC DIAGRAM – CHANGER Section – •See page 40 for IC Block Diagrams.
C741
R702 R701
D701
C751
C715
R713
R712 R711
D711
CN721
R722
R721
R723
C736
C735
C737
R731
C731
R733
R735
CN704
E3
E2
E1
CN703
CN742 CN702
CN741
IC731
CN751 CN705
C752 R751
CN701
CN731
Q731
M751
M741
S751
IC701
IC712
R734 R732
0.01
100 470
MTZJ-T-77
5.1A
0.01
100
16V
22k
4.7k 1k
MTZJ-T-77
3.6B
2P
4.7k
4.7k
4.7k
0.1
0.1
0.1
100
10
50V
1k
100
2P
4P
5P 5P
3P
RPI-576
2P 2P
0.1 4.7k
12P
3P
DTC114ESA
BA6956AN
BA6956AN
12k 10k
RNF RNF
TM-2
GND
TM-1
SENS-IN
SENS-OUT
GND
TM-1
TM-2
SENS-IN
SENS-OUT
GND
SENS-IN
SENS-OUT
GND
SENS-IN
SENS-OUT
GND GND
OPEN SW OPEN SW
LM-2
LM-1 LM-1
LM-2
GND
E-1
E-2
E-3
GND
VCC
OUT2
GND
VREF
OUT1
VM
FIN
RIN
VCC
OUT2
GND
VREF
OUT1
VM
FIN
RIN
LM-R
TM-R
E-1
E-2
E-3
TBL ADDRESS SENS
OPEN SW
(LOADING)
S711
DISC TRAY
ADDRESS DETECT
(TABLE)
TABLE ADDRESS SENSOR
OPEN
CLOSE
OPEN/CLOSE
DETECT
DRIVE
LOADING MOTOR
DRIVE
TABLE MOTOR
LEVEL
SHIFT
CD-VM
LM-L
TM-L
3.3V
(Page 31)

CX-JN20/JN30
2828
D020
D019
C017 C018
C015 C016
R025
R024
C023 C022
IC001 IC002
C026 R035
D033
R036
C030
R031
C029
R046
R050
C047
R049
R051
D031
D066
R072
R073
R076
D032
R093R092 C063
R096
R095
R080
C061
JW004
JW005
C007
C011 C012 C033
D021 D022
R005
JW023
R042R041
R043 R044
D042D041
D043
D044
R038 Q043
R048
R068
R069
Q022
R032
Q024
Q023
Q047Q046
Q045
Q063 Q064
R077
R071
R070
D069
C032
R094
C062
D009
C006
C005
C045
C046
D045
R086
R087
C013 C014 C034
C003
C004
C008
R028
C043 C044
C042C041
R097
R033
C031
R047
R045 Q041
R013
R014
R015
R016 R012
R011
R010
R009
R078
R079
D068
R085
R083
R084
R082
D063
R067
D065
R074
R075
R030R029R027R026
IC003
D023 C035
JR002
R007
R008
R001
R004
JW001
JW003
JW006
D015 D016
D018D017
R056
D067D064
R017
JW002
WH013
WH012
R055
R054
R053
R052
R002
EGP20D
EGP20D
0.1 0.1
0.1 0.1
270
270
100
35V
100
16V
TA7809 TA7809
47
25V 8.2k
1SS355
18k
0.0047
10k
47
10V
4.7k
10
100
10V
4.7k
100k
1SS355
1SS355
5.6k
27k
1k
1SS355
15k100 1
50V
33k
15k
100k
47
25V
3300
25V
0.1 0.1 0.1
EGP20D EGP20D
100k100k
100k 100k
10EDB4010EDB40
10EDB40
10EDB40
02SA1015
0
39k
5.6k
2SC3052
47k
2SC3052
2SA1015
2SC30522SC3052
2SC3052
2SA1235 2SC3052
1k
27k
27k
1SS355
33
25V
10k
1
50V
D5SBA20
4700
35V
4700
35V
100
50V
100
50V
UDZSTE-1733B
10k
10k
0.1 0.1 0.1
3300 50V
3300 50V
1000
25V
33k
68k
47
25V
2SA1015
15k
15k
15k
15k 15k
15k
15k
15k
0
0
MC2836
56k
33k
56k
33k
MC2836
39k
1SS355
27k
5.6k
TA7804LS
11EQS04 0.1
0
1.8
1N5402 1N5402
1N54021N5402
8.2k
MC2838MC2838
0.33
11P
9P
8.2k
8.2k
8.2k
8.2k
1.8
A1
A2
A3
A4
A5
A6
A8
VCC
-VFL
F1
F2
VH1
VH2
VH2
VH1
V-STBY
O-POWER
4V
VM
VH2
VH1
VDD
VSS
CD-VM
HOLD
∗
∗
∗∗
∗∗
∗∗∗∗
∗
∗
∗
FIL-1
FIL-2
VH(AC)
VH(AC)
VSTBY
GND(M)
VL(AC)
VL(AC)
P-ON
VM(AC)
VM(AC)
(1/4)
∗
∗
G
OI
G
OI
G
OI
+9V REGULATOR +9V REGULATOR +4V REGULATOR
RELAY
DRIVE
Q023,024
B+ SWITCH
Q045,046
HOLD PROTECT
Q063,064
DC DETECT
1.5
∗
Q041,043
33 35V
3.3k
4.7k
82
(JN30)
(JN30)
∗
470
R028
330
R026,027,029,030
470
390
(JN20)
(JN30)
(JN20)
(JN30)
-33V REGULATOR
(JN20)
(JN30)
(JN20)
(JN30)
56
C041,043
(JN20)
(JN30)
100 35V
∗
(JN20)
(JN30)
100 35V
C042,044
22 35V
(JN30)
(JN30)
R001,004,005,008
(JN20)
(JN30)1.8
0.33
0.47
(JN20)
(JN30)
(JN20)
FIL-1
FIL-2
VH(AC)
VH(AC)
VSTBY
GND(M)
VL(AC)
VL(AC)
P-ON
(JN20)
(JN30)
(JN20)
(JN30)
(JN30)
(JN20)
(JN20)
6-9. SCHEMATIC DIAGRAM – MAIN Section (1/4) –
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replaceonly with partnumber specified.
(Page 39)
(Page 39)
(Page 29)

CX-JN20/JN30
2929
6-10. SCHEMATIC DIAGRAM – MAIN Section (2/4) –
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replaceonly with partnumber specified.
R157
C121
R131
R129R127
C115 R125
R123
R121
R109
R160
C126R158
R119
R132
C116 R126
R122
R124
R284
C281
R282
TH101
TH102
R297
R296
R292
R290
C282
R107
R108
Q182
R182
R181
Q181
R186
R280
R120 R118
R201
C109
C110
C112
R130R128
C114
Q183
Q105
Q107
C111
R117
C113
C119
Q117
Q119
C120 C122
Q118
R185
C230
R237
D231 R236
D232
R238
C232
R242R241
Q233
D242
D241D235
R239
R248R246
Q234
R262
R261R258R257R252
Q291
R291
R264R263R260
R259
R244
R243
Q235
R250R249
D240
C231
C201
C203
R203
C207 C208
WH201
R202
R204
C204
C202
Q120
R138
R281
Q231
R253
D103
C106
Q106
D104
R110
EP001
EP099
C105
R105
R106
C117
R147
R159
C241
C097
C125
R148
R134
J203
R283
C118
D236
Q108
D109
D239
Q232
D110
Q111
Q112
JW201JW202
C206
C205
D291
R293 R294
Q292
Q282
D281
D243
D244
Q281
Q122
R150
C130
R154
R156
R152
Q130
Q124
R144R142
R140
C120
D106
C128
C134
C136
R162
R161
R116
R114
Q102
Q104
D111
R155
R153
R151
R149
Q123
Q121
D107
C133 C127
D105
Q103
Q101
R139
Q109
R137
R133
C119
R141 R143
R115
D101
R113
C103
C104
C135
C129
R183 C181
R184 C182
R188
JR104
R189
C131
C132
JW231
JW232
C209
C210
D292
Q129
Q110
D235
D236
D108
100
0.1
4.7k
100100
820p 1.5k
6.8k
1k
100
1k
0.01100
2.2k
4.7k
820p 1.5k
1k
6.8k
4.7k
0.0047
12k
47k
47k
10k
47k
0.0022
27k
27k
2SD1306
NE
12k
12k
2SD1306
NE
47k
10k
2.2k 2.2k
10
L201
1.7µH
L202
1.7µH
10
50V
10
50V
100p
100100
33
50V
2SA1235
2SC3052
2SC3052
100p
2.2k
33 50V
100p
100V
2SC3052
2SC3052
100p
100V
0.1
2SC3052
68k
10
63V
1k
1SS355 2.2M
UDZS-1710B
2.2k
0.1
10k3.3k
2SA1235
0
1SS355RK46
2.2k
4.7k4.7k
2SC3052
4.7k
4.7k47k47k10k
DTA114EKA
2.2k
4.7k4.7k47k
47k
2.2k
1k
2SA1235F
4.7k4.7k
UDZS-175.6B
10
63V
0.1
0.1
10
0.01 0.01
5P
10
10
0.1
0.1
2SC3052
2.2k
2.2k
2SK2937
10k
1SS355
2.2
50V
2SC3052
1SS355
100
2.2
50V
100p
100V
0
1k
0.47
0.1
0.01
0
1.8k
4P
100p
100V
RK46
2SC3052
AU-01Z
UDZS-175.6B
2SK2937
AU-01Z
2SC2909
2SC2909
0.01
0.01
MC2836
82k 82k
2SB792A
2SD814A
MC2838
MC2838
MC2836
2SB792A
2SB1677
0.22
3W
100p
100V
3.9k
1.2k
0.22
3W
2SB792A
2SD2619
33
0
MC2836 100p 100V
0
0
5.6k
5.6k
1.2k
2SA1235
2SA1235
MC2838
1.2k
3.9k
0.22
3W
0.22
3W
2SD2619
2SB1677
MC2838
0 100p
100V
MC2836
2SA1235
2SA1235
2SD814A
2.2k
1.8k
0
33
MC2836
1.2k 0
100p
100V
22k
0
0
100p
100p
0
0
MC2838
2SB792A
2SD814A
MC2838
A1
A2
A3
A4
A5
A6
A8
FR-A-GND
CD-D-GND
CD-P-GND
FUNC-A-GND
CD-A-GND
TU/AUX-A-GND
V-STBY
O-MUTE
O-POWER
-VFL
VM
HOLD
VDD
VSS
4V
FR-D-GND
OUT-R
OUT-L
SP-A-GND
F1
F2
CD-VM
O-MUTE
HOLD
VCC
CD-VM
4V
VSS
VDD
F1
F2
HOLD
VM
-VFL
O-POWER
O-MUTE
V-STBY
∗
∗
∗
∗
∗
*
∗
∗
∗
∗
∗∗
∗∗
GND
R-OUT
R-IN
L-IN
L OUT
+
+
-
-
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(2/4)
∗
L
R
Q101,103
PRE DRIVE
Q105,107
CURRENT
MIRROR
CASCADE
PRE DRIVE
Q102,104
CURRENT
MIRROR
Q106,108
Q118,120
BIAS
BIAS
Q117,119
OVER LOAD
DETECT
OVER LOAD
DETECT
DETECT
OVER CURRENT
CASCADE
SWITCHING
MUTING
MUTING
MUTING
CONTROL
HOLD
DETECT
Q233-235
OUTPUT LEVEL
SWITCHING
Q291,292
THERMAL DETECT
S
S
CASCADE
CASCADE
R105,106
15k
FINAL DRIVE
∗
FINAL DRIVE
FINAL DRIVE
10k (EXCEPT E51,MX)
(E51,MX)12k
SPEAKER
(JN30)
(JN20)
(JN30)
R141,142
47k
1k
(JN20)
(JN30)
FINAL DRIVE
(JN30)
(JN30)
(JN20)
∗
(JN20)
(JN30)47k
0
R139,140
∗
(JN20)
(JN30)
R183,184
6.8k
3.9k
∗
(JN20)
(JN30)
∗ C181,182
1 50V
2.2 50V
(JN20/JN30:CIS)
(JN30:AEP,UK)
C103,104
1500p
1000p
∗
(JN20)
(JN30)
R115,116
22k
27k
(JN20)
(JN30)12k
(JN20)
(JN30)
(Page 30)
(Page 28)
(Page 33)

CX-JN20/JN30
3030
CN601
Q309
Q307
R656
C306
R630
R628
R637
R629
R627
C621
C622
C642C644C641C643
R643 R644
R651
R652
R607 C603 R603 R605
C605
R602
R608
C604
R604R606
C606
R601
C608R610R609C607
C610
C609
C613
C614
R662
D663
R663
C663
R661
C664
D661
C661 C662
D662
R618
R617
R616
R615
C303
C304
R304 R303
C301
R301
Q304
Q306
R612
C320
Q601
R316
R314
R654
JR601
R655
R653
R664
R665
C611
C612
C602
C601
C305
R305
CN302
CN301
FB601
HRPE1
C687
R318
C315
TP601
Q301
Q305
Q308
C302
R302
Q302
Q303
L311
Q310
Q311
R317
HP1
IC601
C321
R658
C322
R638
FB602 R621
R624
R623
R622
R625
R626
R659
C312
C318 Q312
C319
R631
R632
R635
R636
C626
C624
R634
R633
C623
C625
R312C313
C317R313
R315
C316
C311R311
C314
R667R666
R645 C734 C733
D301
R619
R620
JR611
30P
2SK2541
2SK2541
22k
0.001
10k
2.2k
330
10k
2.2k
180p 180p
0.22
50V
0.22
50V
0.22
50V
0.22
50V
3.3k 3.3k
100
100
100k 100
10V 390k 1.2k
0.0068
100
100k
100
10V
390k1.2k
0.0068
100
470p18k18k470p
150V
150V
0.0033
0.0033
47k
1SS355
10k
0.1
15k
0.1
UDZS-174.7B
220
10V
47
25V
UDZS-174.7B
15k
15k
15k
15k
0.0012
0.0012
82k 82k
0.0012
39k
2SK2541
2SJ460
4.7k
0.1
DTA114EKA
10k
10
22k
0
22k
22k
6.8k
6.8k
560p
560p
47p
47p
470p
220k
8P
3P
0
0.01
4.7k
0.022
2SJ460
2SJ460
2SK2541
0.0012
39k
2SJ460
2SK2541
2SC2001
2SA1015
1k
BD3881FV
0.1
22k
0.1
330
0 5.6k
3.9k
3.9k
5.6k
2.2k
1000p
0.0047 2SC3052
10
50V
470
470
1.2k
1.2k
8200p
5600p
3.3k
3.3k
5600p
8200p
10k470p
0.01527k
39
0.015
1000p10k
470p
2.7k2.7k
4.7k 0.1 0.1
MC2836
27k
27k
0
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
FR-D-GND
CD-P-GND
CD-D-GND
FUNC-A-GND
FR-A-GND
CD-A-GND
TU/AUX-A-GND
SP-A-GND
4V
VSS
VDD
HOLD
F1
VM
-VFL
O-POWER
O-MUTE
V-STBY
OUT-L
OUT-R
F2
CD-VM
AUX-R
AUX-L
PB2
O-BIAS
CD-L
CD-R
TU-L
TU-R
DATA
RDS-CLK
RDS-DATA
CLK
IFC
PLL-CE
F1
F2
HOLD
-VFL
O-MUTE
4V
V-STBY
RDS-SIG
STEREO
TUNED
TBL-SENS
O-POWER
OUT-L
OUT-R
S-OUT
BU-UP
STB
TU-MUTE
CD-VM
O-BIAS
DATA
VSS
VDD
PB2
CD-VM
VDD
VSS
OUT-R
OUT-L
CD-VM
4V
F1
F2
HOLD
VM
-VFL
O-POWER
O-MUTE
V-STBY
*
*
-VFL
VF1
VF2
TU-SIG
RDS-CLK
STB-I/O
CLK
DATA
IFC
STEREO
PLL-CE
O-BIAS
MIC-OUT
A-GND
SPEANA
O-MUTE
PB2
CD-NUMBER SENS
BU-UP/DOWN SW
HOLD
D-GND
V-STBY(EVER)
TUNER TUNE
RDS-DATA
S-0UT
O-POWER
TU-MUTE
VF-ON
CD-VM
PB2P(R)
PB1P(L)
PB1N(L)
PB2N(R)
PB-OUT(R)
PB-OUT(L)
VOL-IN(L)
VOL-IN(R)
TRE1(L)
TRE1(R)
GND
VDD
CONT
VEE
REC1O(L)
REC1N(L)
REC1N(R)
REC1O(R)
C-IN(R)
C-IN(L)
B-IN(R)
B-IN(L)
A-IN(R)
A-IN(L)
OUT(L)
OUT(R)
BASS(R)
BASS(L)
(3/4)
* R625,626
3.3k
3.9k
BIAS OSC
R CH
L CH
(PB)
(DECK-A)
R CH
L CH
ERASE
(DECK-B)
(REC/PB/ERASE)
INPUT SELECT,
ELECTRICAL
VOLUME
LGR
SWITCH
Q311,312
REC BIAS
BIAS OSC
INVERTER
Q305,306
MUTING
MUTING
Q307-309
Q301-304
PB SWITCH
S
S
S
SS
S
S
S
S
(JN30:CIS)
(JN20/JN30:AEP,UK)
+4V
6-11. SCHEMATIC DIAGRAM – MAIN Section (3/4) – •See page 40 for IC Block Diagram. •See page 40 forWaveforms.
(Page 29)
(Page 35)
(Page 31)

CX-JN20/JN30
3131
C652
C651
C654
C695
C694
C693
C684
C731
R691
R694
R697
R700
D695
D697
R701
R692
R693
R695
R696
R698
R699
R686
R685
R736
R737
R738
R739
R735
R734
R733
R763
R762
R761
R767
R766
R765
R764
C767
C766
C765
C764
R671
C680
C676
C681
R673
C682
C671
C679
R687 R676 R677 R678
R670
R683R682R681R680
Q672Q671 Q673
R688
R679
C730C732
D671
R705R704R703R702
CN692
CN694
J602
D694
R732
R731
R730
C672
R672
C688
R801
JR801
C685
C686
C801
C802
D801
R810
R807
D691 D692 D693
JW692
FB691
CN801
CN802
IC671
Q674 Q675 Q676 Q677
C675
IC672
R674
R675
C677
C678
R684
C683
C653
C655
C950
D024
C698
C699
CN691
C910
C913
C911C912
C670C668
C674
C673
C669
C689
R812
R809
JW690
1000p
1000p
100p
470
FB693
0.45µH
150V
150V
0.1
100p
22k
22k
22k
22k
1SS355
10EDB40
22k
10k
1k
10k
1k
10k
1k
3.9k
3.9k
47k
47k
47k
47k
47k
47k
47k
100k
100k
100k
220k
220k
220k
220k
4700p
4700p
4700p
4700p
56k
0.22
0.033
0.22
1k
0.1
0.47
50V
220
10V
1k 4.7k 2.2k 470
10k
3.3k4.7k6.8k10k
2SK21582SK2158 2SK2158
390
12k
100p100p
1SS355
10k10k10k10k
12P
11P
2P
10EDB40
10k
10k
10k
0.47
50V
10k
10
50V
220
0
1000p
1000p
10 50V
0.1
UDZS-175.1B
1k
1k
10EDB40 10EDB40 10EDB40
11P
15P
NJM2156
2SK2158 2SK2158 2SK2158 2SK2158
0.033
BU2092F
3.3k
3.3k
0.33
50V
0.33
50V
470
470
25V
330p
330p
330p
0.01
0.01
19P
0.01
1000p
100p100p
100p100p
100p
0.1
0
0
10EDB40
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
AUX-R
AUX-L
TU-L
TU-R
CLK
IFC
DATA
PLL-CE
STEREO
RDS-SIG
S-OUT
CLK
FREQ1
FREQ2
FREQ3
BOOST1
BOOST2
BOOST3
BOOST4
BBE
4V
TUNED
TBL-SENS
CD-VM
BU-UP
TU-MUTE
STB
4V
VM
Z1
Z2
Z3
Z4
Z5
Z6
Z7
Z8
Z9
Z10
Z1
Z2
Z3
Z4
Z5
Z6
Z7
Z8
Z9
Z10
CD-L
CD-R
FREQ1
FREQ2
FREQ3
BOOST4
BOOST3
BOOST2
BOOST1
RDS-CLK
RDS-DATA
VM
CD-VM
4V
BBE
VM
∗
∗
CL
DO
DI
CE
+9V
TUNED
STEREO
L-CH
GND
R-CH
MUTE
FM-SOUT
GND
LM-R
TM-R
TBL ADDRESS SENS
3.3V
RDS INT
RDS DATA
5V
E-1
E-2
E-3
OPEN SW
CD-L
A-GND
CD-R
D-GND
P-GND
6.4V
D-OUT
DRF
WRQ
FSYNC
CD_CE
MP3_CE
CL
DI
DO
CD_RES
CD_ON
3.3V
DRF
WRQ
FSYNC
CD_CE
MP3_CE
CL
DI
DO
CD_RES
CD_ON
VDD
OE
LM-R
LM-L
TM-R
TM-L
BBE
BOOST4
BOOST3
VSS
DATA
CLK
LCK
FREQ1
FREQ2
FREQ3
BOOST1
BOOST2
INB
HINB
HOUTB
LINB
LOUTB
OUTB
VREF
GIN
GOUT
GND
INA
HINA
HOUTA
HINA
HOUTA
OUTA
BBE
LPOUT
LPIN
V+
(4/4)
CL
DO
DI
CE
+9V
TUNED
STEREO
L-CH
GND
R-CH
MUTE
D-GND
AMUTE
THE ASSEMBLED
BLOCK
SUPPLIED WITH
TUNER PACK
L
R
BASS BOOST
ENHANCER
Q674-677
BOOST CONTROL
Q671-673
FREQUENCY
CONTROL
BBE CONTROL,
LOADING/TABLE
MOTOR DRIVE
SSS
SSSS
VIDEO/AUX
AM LOOP
(COAXIAL)
FM 75Ω
CD-VM
LM-L
TM-L
(JN30:CIS)
(CHASSIS)
(JN20/JN30:AEP,UK)
(JN30:CIS)
(JN20/JN30:AEP,UK)
(JN20/JN30:AEP
,UK)
(JN20/JN30:AEP,UK)
∗
C673,674
390p
560p
(JN20/JN30:CIS)
(JN30:AEP,UK)
6-12. SCHEMATIC DIAGRAM – MAIN Section (4/4) – •See page 40 for IC Block Diagrams.
(Page 30)
(Page 25)
(Page 35)
(Page 27)

CX-JN20/JN30
3535
R707
R701
R703
R709
R706
R702
R912
R911
R910
R909
R908
R907
R906
R905
R904
R903
R902
R964
R965
R966
R967
R601
C214
C215
C216
R226
R227
R228
R264
R261
R262
R263
R114
R121
R113
C918
R950
R949
R948
R947
R946
Q602
Q603
Q601
R248 R501
C502
C501D507 C503
D505
D504 R506
D501
C507 R503 D503
R502
C508 C510
R504 R507
R817
C809
R975
R976
C923
R958
C920C919
C930
C931
C932
R336
R335
R334
R249
R962
R961
R963
R254
C933
R627
R626
R628
R637
R630
R629
R631
CN701
CN101
R116
R117
R120
JW901
R913
R914
R915
R916
R917
R918
R919
R920
R921
R922
R923
R924
R925
R926
R927
R928
R929
R930
R931
R932
R933
R934
R935
R936
R937
R938
R939
R940
R941
R968
C912
C909
C908
C907
C906
C905
C904
C903
C902
IC502
R505
D506
CN403
CN601
R609
R607
R608
R612
R611
R610
IC501
D602
D601
C213
R957
X901
C924
C926C927 C935
Q901C921
C504
C917
JW902
C916
R644 R643 R642 R641 R640 R639 R638
R122
R119
R112
R111
D101 R225
R625
R959
R954
R953
R971
R645
C201
R208
R203
Q206
R205
R204
R214 R215
D201
R212
Q204
R221
R220
C202
R219
JR903
FL901
R944
R218
R217
R206
C204
R945
Q604
Q605
Q606
R216
C207
R213R211
R202
C203
Q201R201
C210
R210
Q205
C211
R222
R223
Q202
R969R970
R943 R942
R104
R108
R109
R110
R106
R107
R118
R247
R960
X902
C922
C205
Q607
D508
R105
C208
D609D614
IC901
R974
C910
C911
D611
R704
R708
R705
R102
R103
R101
JR703
C601
IC201
C509
D509
D610
R973
R972
Q903 Q902
IC801
R818
D626
D627
D625
D624
D623
D622
D621
D620
C914 C915
JW995
JW987
100
100
100
100
100
100
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
100k
100k
100k
100k
100
100p
100p
100p
10k
10k
10k
2.2k
10k
10k
10k
1k
1k
1k
0.1
100k
100k
100k
100k
100k
2SB1116
2SB1116
2SB1068
100k
180
0.01
1
50V
MTZJ T-72
11B
1
50V
1SS133
1SS133 330
1SS133
0.022 47k 1SS133
47k
0.1 0.1
10k 10k
47
47
16V
100k
2.2k
22p
10M
22p18p
0.1
0.1
0.1
10k
10k
10k
27k
1k
1k
1k
220k
3900p
47k
47k
47k
47k
47k
47k
47k
11P
30P
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100p
100p
100p
100p
100p
100p
100p
100p
100p
M62703ML
4.7k
1SS133
23P
13P
1k
1k
1k
1k
1k
1k
MM1614A
1SS133
1SS133
0.1
100k
32.768KHz
0
0.10.1 330
6.3V
2SC30520.1
1000
6.3V
4.7
50V
4.7
50V
2.2k 1k 1k 1k 1k 1k 1k
1k
1k
1k
1k
1SS133 100
47k
470k
3.9k
100k
100k
2.2k
1
50V
2.2k
220k
2SC3052
4.7k
39k
220k 100
1SS133
330k
2SC3052
47k
220k
3900p
10k
0
6.8k
100
220k
0
0.068
6.8k
RN1202TPE
RN1202TPE
RN1202TPE
330k
0.015
4.7k12k
100
22
50V
2SC30521.5k
3300p
100
2SC3052
0.01
220k
100
2SC3052
100k100k
1.8k 1.8k
1k
1k
1k
1k
1k
1k
10
12k
100
8.64MHz
22p
0.1
DTA114EKA
-T146
1SS133
1k
3300p
1SS1331SS133
LC876796B-52D8
100k
220p
220p
1SS133
39k
39k
22k
0
47
16V
BU2099FV
220
10V
1SS133
1SS133
DTC144EKA DTA124EKA
GP1UM271XK
56k
MC2836
MC2836
MC2836
MC2836
MC2836
MC2836
MC2836
MC2836
47
35V 0.1
100
100
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
C1
C2
C3
C4
C5
C6
C7
C8
C9
C4
C6
C7
C8
C9
A1
A2
A3
A4
A5
A6
A7
A8
A10
A11
A12
A14
A15
A16
A2
A16
C1
C3
A8
A14
A12
L1
L2
L1
L2
A10
A8
A7
A17
A17
A6
A3
A4
A11
L3
L4
L5
L3
L4
L5
A18
A18
C5
K4
K3
K6
K5
K2
K7
K8
K1
B8
B9
B10
K1
K2
K3
K4
K5
K6
K7
K8
A5
A15
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
E1
E1
E3
T5 T6 T7 T8 T9 T10 T11 T12
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
G11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
G11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S6
S7
S8
S9
S10
S10
S11
S11
S12
S12
S13
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S23
S23 S6
S7 S8 S9 S10 S11 S12 S13
A18
B8
B9
B10
A1
E3
A10
A7
A20
A20
A18
C2
T7
T8
T6
T10
T5
T12
T11
T9
K9
K10
K11
K9
K10
K11
S18
S18
S20
S20
S19
S19
E2
E2
∗
∗
VSS2
VDD1
VDD2
VDD3
VDD4
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
S1
S2
S3
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
VSS1
CF1
CF2
S28
D-GND
REC(REW)
B-SOL
B-MODE
B-HALF
B-PHOTO
REC(FWD)
CAPM+
A-HALF
GND
A-PHOTO
A-SOL
A-MODE
RESET
CD DRF
CD WRQ
S4
S5
POWER
S29
S30
A MODE/S13
A HALF/S12
REC FWD
/S11
CONT
GND
NOISE
VO
VIN
D-GND
G11
A-GND
MIC-OUT
O-BIAS
PB2
S-OUT
SPEANA
BU-UP/DOWN SW
O-MUTE
STB-I/O
D-GND
CD-NUMBER SENS
HOLD
V-STBY(EVER)
RDS-CLK
CLK
IFC
DATA
PLL-CE
TUNER TUNE
STEREO
VF1
TU-SIG
VF2
-VFL K1
K2
K3
K4
K5
K6
K7
K8
VDD
B8
B9
B10
D-GND
V-BASS
VM
MIC-OUT
A-GND
I-MIC
DATA(ECHO)
CLK(ECHO)
LATCH(ECHO)
VDD(STBY)
O-POWER LED
VDD
OE
SO
V-BASS
LED R1
LED R2
LED R3
LED L1
LED L2
LED L3
VSS DATA CLK LCK
NC
O-BIAS O-MOTOR SOL A SOL B
PB2
FLUORESCENT INDICATOR TUBE
CD_CE
DRF
WRQ
FSYNC
MP3_CE
CL
DI
DO
CD_RES
O-POWER
CD-VM
RDS-DATA
TU-MUTE
GND
RMC
VDD
THE ASSEMBLED
BLOCK
SUPPLIED WITH
TAPE MECHANISM
DECK BLOCK
DRIVE,
MOTOR/PLUNGER
LED DRIVE
Q601,604
CAPSTAN/REEL
MOTOR DRIVE
Q602,605
PLUNGER DRIVE
(DECK-A)
Q603,606
PLUNGER DRIVE
(DECK-B)
+4V REGULATOR
V
G
R
RESET SIGNAL
GENERATOR
REMOTE CONTROL
RECEIVER
SYSTEM CONTROLLER
SYS-
MUTE
RDS DO
TU/EVOL DO
CD RESET
CD CE
MP3 CE
CLK-SHIFT
LCK
TU CE
MP3 SYNC
XT1
XT2
POWER DOWN
TU-SIG/MIC
CD BUSY
SPEANA-L
SPEANA-M
SPEANA-H
KEY3
KEY2
KEY1
HOLD
RDS CLK
RMC
A PHOTO/S6
FIX0
B HALF/S10
B MODE/S9
REC REV/S8
B PHOTO/S7
S14
CD NUMBER SENS
TUNED
STEREO
VOL A
VOL B
JOG A
JOG B
TRE A
TRE B
BASS A
BASS B
TUNER MUTE
LED L
LED R
CLK
VF ON
KEYSCAN
POWER LED
TU DI
CD DI
CD DO
CD CLK
SWITCH
RESET
B+ SWITCH
CD_ON
VF-ON
+4V
(JN20/JN30:AEP,UK)
SPEANA AMP
(JN20/JN30:AEP,UK)
(JN30:CIS)
Q201,202
Q204-206
∗ R972,973
68k
100k
(JN20/JN30:AEP,UK)
(JN30:CIS)
Q902,903
STANDBY SWITCH
BAND-PASS FILTER
6-17. SCHEMATIC DIAGRAM – PANEL Section – •See page 40 for IC Block Diagrams. •See page 40 for Waveforms. •See page 43 for IC Pin Function Description.
(Page 31)
(Page 30)
(Page 37)

CX-JN20/JN30
3737
S319 S320 S321 S322 S323
S301 S302 S303 S304 S305
R306R305R304R303R302
R312 R313 R314 R315 R316 R317 R318
R322 R323 R324 R325 CN302CN301
C801 C802
R805
R806 C803 C804 R808
R807
R804
R803
R813
R814 C807 C808 R816
R815
C806C805R810
R809 R811
R812
R326 R327 R328 R329
CN303
R801
R802
R321
S306
S307 S309S308 S310
S311
S314
R301
R311
LED201
R231
S801 S803
S802 S804
S315
LED901
S313
S318S316 S317
S312
1.2k1.2k1k8201k
1k 820 1k 1.2k 1.2k 1.8k 1.8k
1k 820 1k 1.2k 5P5P
1000p 1000p
10k
10k 1000p 1000p 10
10
10
10
10k
10k 1000p 1000p 10
10
1000p1000p10k
10k 10
10
1.2k 1.8k 1.8k 2.7k
23P
10k
10k
0
0
0
SLR325-VC
1k
SLR325-URC
K1
K2
K3
K4
K5
K6
K7
K8
B8
B9
B10
B8
B9
B10
K1
K2
K3
K4
K5
K6
K7
K8
D-GND D-GND
KEY3 KEY3
K1
K2
K3
K4
K5
K6
K7
K8
VDD
B8
B9
B10
D-GND
V-BASS
VM
MIC-OUT
A-GND
I-MIC
DATA(ECHO)
CLK(ECHO)
LATCH(ECHO)
VDD(STBY)
O-POWER LED
VOLUME
BASS MULTI JOG
TREBLE
NC
NC
NC
NC
NC
NC
MODE ENTER CD TAPE A/B
TUNER
BAND AUX
REC
SYNC DUB
SETCLEARPRESET
TUNING DOWN TUNING UP
A
B
C
A
B
C
A
B
C
A
B
C
1
2
3
1
2
3
1
2
3
1
2
3
OPEN/CLOSE 3 12
DISC DIRECT PLAY
DISC
CHANGE
POWER
STANDBY/ON
i-BASS
REC MUTING
i-BASS
DISPLAY ALBUM ALBUM
PTY
PLAY/ STOP/ PAUSE/
VIDEO/
6-19. SCHEMATIC DIAGRAM – KEY Section –
(Page 35)

CX-JN20/JN30
3939
JW218
PR093
CN091
RY001
C091
PT011
PT002
D091
D092
WH092
WH093
2P
0.1
MC2836
MC2838
9P
11P
VM(AC)
VM(AC)
VH(AC)
VH(AC)
VL(AC)
VL(AC)
GND(M)
FIL-1
FIL-2
P-ON
VSTBY
POWER TRANSFORMER
VL(AC)
VL(AC)
GND(M)
FIL-1
FIL-2
P-ON
VSTBY
(AC IN)
(MAIN)
POWER TRANSFORMER
(SUB)
∗
∗
NOT REPLACEABLE:
BUILT IN TRANSFORMER
(JN20)
(JN30)
VH(AC)
VH(AC)
6-21. SCHEMATIC DIAGRAM – PT Section –
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replaceonly with partnumberspecified.
(Page 28)
(Page 28)

51
CX-JN20/JN30
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
501 4-243-815-01 TABLE (LOADING)
502 4-218-252-61 SCREW (+PTPWH M2.6), FLOATING
503 4-218-253-21 SCREW (M2.6), +BTTP
504 1-687-132-12 SENSOR BOARD
505 4-243-819-01 GEAR (GENEVA)
506 4-243-820-01 GEAR (TABLE)
507 4-243-823-01 BELT (TABLE)
508 4-243-821-01 PULLEY (TABLE)
509 1-776-182-11 WIRE (FLAT TYPE) (5 CORE)
510 1-687-134-12 MOTOR (TB) BOARD
511 4-243-816-01 TRAY
512 3-231-598-01 SHEET (BA)
513 4-245-570-01 GEAR (JOINT)
514 4-245-571-02 GEAR (STOPPER)
515 4-985-672-01 SCREW (+PTPWH M2.6), FLOATING
516 4-245-572-01 BUSHING (GEAR)
M741 A-4723-963-A MOTOR ASSY, TABLE
CD mechanism deck section -2
501
502 502
505
504
503
502
506 507
509
508
510 512
503
M741
511
513
514
514
515
515
516
513
516
7-7. CD MECHANISM DECK SECTION-1
(CDM74S-K6BD71A)

52
CX-JN20/JN30
7-8. CD MECHANISM DECK SECTION-2
(CDM74S-K6BD71A)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
551 4-218-252-61 SCREW (+PTPWH M2.6), FLOATING
552 4-244-034-01 BELT (LOADING)
553 4-224-613-01 GEAR (SHAFT)
554 4-218-253-31 SCREW (M2.6), +BTTP
555 1-687-669-12 SW BOARD
556 1-687-135-12 DRIVER BOARD
557 4-225-844-01 GEAR (LOADING A)
558 4-224-611-01 GEAR (LOADING B)
559 4-224-609-01 GEAR (LOADING C)
560 3-016-533-11 WASHER (FR), STOPPER
561 4-244-108-01 GEAR, SWING
562 4-224-608-01 COLLAR, SWING
563 1-687-133-12 MOTOR (LD) BOARD
564 4-224-606-01 GEAR (RV)
565 4-243-818-01 GEAR (U/D)
M751 A-4736-655-A MOTOR ASSY, LOADING
S711 1-477-680-12 ENCODER, ROTARY
(DISC TRAY ADDRESS DETECT)
M751
S711
551
552
553
554
551 551
554
554
555
556
557
558
559
560
561
562
563
564
565
CD mechanism deck section -
3

53
CX-JN20/JN30
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
601 X-4955-707-2 PULLEY (A5) ASSY, CHUCKING
602 1-471-035-11 MAGNET ASSY
603 4-231-189-01 PULLEY (B), CHUCKING
604 4-218-252-61 SCREW (+PTPWH M2.6), FLOATING
605 4-243-822-02 LEVER (LIFTER)
606 X-4955-536-1 HOLDER (213) ASSY
607 4-227-549-11 INSULATOR
608 4-227-045-31 SPRING (INSULATOR), COIL
609 4-231-151-01 STOPPER (BU)
610 4-218-253-31 SCREW (M2.6), +BTTP
611 4-985-672-01 SCREW (+PTPWH M2.6), FLOATING
612 4-243-817-01 CHASSIS
7-9. CD MECHANISM DECK SECTION-3
(CDM74S-K6BD71A)
602
603
601
604
604
612
605
606
607
608 607
608
609
610 611
BU-K6BD71A

54
CX-JN20/JN30
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
651 A-4732-699-A BD BOARD, COMPLETE
0652 A-4735-357-A BASE ASSY, OP (KSM-213DCP)
(including M701 (SLED), M702 (SPINDLE))
653 1-792-024-11 WIRE (FLAT TYPE) (16 CORE)
#3 7-685-534-19 SCREW +BTP 2.6X8 TYPE2 N-S
653
651
652
not supplied
(M702) not supplied
(M701)
#3
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replace only with part number specified.
7-10. BASE UNIT SECTION
(BU-K6BD71A)

55
CX-JN20/JN30
BD
SECTION 8
ELECTRICAL PARTS LIST
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
A-4732-699-A BD BOARD, COMPLETE
*******************
< CAPACITOR >
C701 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C702 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C703 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C704 1-126-391-11 ELECT CHIP 47uF 20% 6.3V
C705 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C706 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C707 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C708 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C709 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C710 1-163-035-00 CERAMIC CHIP 0.047uF 50V
C711 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C712 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C713 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C714 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C715 1-126-401-21 ELECT CHIP 1uF 20% 50V
C716 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C717 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C718 1-164-346-11 CERAMIC CHIP 1uF 16V
C719 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C720 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C721 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C722 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C723 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C729 1-128-360-11 ELECT CHIP 220uF 20% 10V
C732 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C734 1-162-917-11 CERAMIC CHIP 15PF 5% 50V
C735 1-162-918-11 CERAMIC CHIP 18PF 5% 50V
C739 1-127-888-11 CERAMIC 0.1uF 10% 50V
C740 1-127-888-11 CERAMIC 0.1uF 10% 50V
C741 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C742 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C743 1-163-035-00 CERAMIC CHIP 0.047uF 50V
C744 1-109-982-11 CERAMIC CHIP 1uF 10% 10V
C746 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C747 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C748 1-128-360-11 ELECT CHIP 220uF 20% 10V
C753 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C754 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C756 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C771 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
NOTE:
•Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
•-XX and -X mean standardized parts, so they
may have some difference from the original
one.
•RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
•Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
•SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .
•CAPACITORS
uF: µF
•COILS
uH: µH
C781 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C802 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C803 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C804 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C805 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C806 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C807 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C810 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C811 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C812 1-164-346-11 CERAMIC CHIP 1uF 16V
C813 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C814 1-126-392-11 ELECT CHIP 100uF 20% 6.3V
C815 1-128-360-11 ELECT CHIP 220uF 20% 10V
C816 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C817 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C823 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C824 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C825 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C829 1-162-949-11 CERAMIC CHIP 47PF 5% 50V
C830 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C831 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C834 1-128-360-11 ELECT CHIP 220uF 20% 10V
C835 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C837 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C843 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C844 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C856 1-164-346-11 CERAMIC CHIP 1uF 16V
C857 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C858 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C859 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C860 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C861 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C862 1-164-156-11 CERAMIC CHIP 0.1uF 25V
< CONNECTOR >
CN708 1-817-244-11 CONNECTOR, FFC 16P
CN710 1-778-874-11 CONNECTOR, FFC (LIF (NON-ZIF)) 19P
< FERRITE BEAD >
FB701 1-550-907-21 BEAD, FERRITE (CHIP) (2012)
FB707 1-550-907-21 BEAD, FERRITE (CHIP) (2012)
FB708 1-550-907-21 BEAD, FERRITE (CHIP) (2012)
FB801 1-550-907-21 BEAD, FERRITE (CHIP) (2012)
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.