Sony Aiwa CX-JN20 Service Manual
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Sony Aiwa CX-JN20 Service Manual

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SERVICE MANUAL
Ver 1.0 2004.03
CX-JN20/JN30 are the tuner, amplifier, cassette
deck and CD player section in JAX-N20/N30.
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
350 µV/m
AM usable sensitivity
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 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
Sony Corporation
9-877-599-01
2004C05-1
Home Audio Company
© 2004.03
Published by Sony Engineering Corporation
CX-JN20/JN30
Photo: CX-JN30
Model Name Using Similar Mechanism
CD Mechanism Type
CD
Base Unit Name
Section
Optical Pick-up Block Name
Optical Pick-up Name
Model Name Using Similar Mechanism
Tape deck
Section
Tape Transport Mechanism Type
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
COMPACT DISC DECK RECEIVER
AEP Model
CX-JN20/JN30
UK Model
CX-JN3
CDM74S-K6BD71A
BU-K6BD71A
KSM-213DCP
KSS-213D
CX-JN3
CWM43FF13
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.
CX-JN30

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  • Page 1 Dimensions (W x H x D) 280 x 330 x 392.5 mm Outputs SPEAKER: 6 ohms or more PHONES: 32 ohms or more COMPACT DISC DECK RECEIVER Sony Corporation 9-877-599-01 2004C05-1 Home Audio Company © 2004.03 Published by Sony Engineering Corporation...
  • Page 2 CX-JN20/JN30 3-10. TABLE ASSY 5 two claws 4 hook 3 wire (flat type) (5 core) (CN702) 1 Turn the loading gear 2 Pull-out the table assy. in the direction of arrow A . 6 table assy 3-11. MOTOR (TB) BOARD 1 screw (PTPWH M2.6) 2 table (loading)

  • Page 3: Base Unit (Bu-K6Bd71A)

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

  • Page 4: Motor Gear Assy (Sled) (M701), Bd Board

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

  • Page 5: Section 4 Test Mode

    CX-JN20/JN30 SECTION 4 TEST MODE MC COLD RESET FUNCTION CHANGE MODE • The cold reset clears all data including preset data stored in the • Select either TV, VIDEO or AUX (MD) of the external function RAM to initial conditions. Execute this mode when returning input.

  • Page 6: Cd Test Mode

    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 [CD] button, connect the AC plug to turn the power on. 2.
  • Page 7 CX-JN20/JN30 SCHEMATIC DIAGRAM – BD Section – • • 6-6. See page 40 for IC Block Diagram. See page 40 for Waveforms. R732 IC803 MM1571J R731 2.2k C771 R721 R722 100p C753 R834 R707 C709 C746 C742 C708 R729 C744 C754 6.3V C807...
  • Page 8 CX-JN20/JN30 SCHEMATIC DIAGRAM – CHANGER Section – • 6-8. See page 40 for IC Block Diagrams. LOADING MOTOR DRIVE IC701 BA6956AN R702 R701 CN721 CN704 LM-2 LM-2 D701 M751 C751 LM-1 LM-1 MTZJ-T-77 0.01 (LOADING) 5.1A S711 DISC TRAY ADDRESS DETECT CN703 TABLE MOTOR DRIVE...
  • Page 9 CX-JN20/JN30 6-9. SCHEMATIC DIAGRAM – MAIN Section (1/4) – (1/4) (JN30) R017 0.33 (JN20) D019 0.47 (JN30) EGP20D VM(AC) VM(AC) C007 D020 VH(AC) 3300 D021 D022 EGP20D EGP20D EGP20D VH(AC) C011 C012 C033 (JN20) VL(AC) JW001 ∗ ∗ R026,027,029,030 R028 VL(AC) (JN20) (JN20)
  • Page 10 CX-JN20/JN30 6-10. SCHEMATIC DIAGRAM – MAIN Section (2/4) – D107 (2/4) R123 Q101,103 R131 MC2838 6.8k 4.7k PRE DRIVE C133 C127 R119 2.2k 100p 100V Q123 2SD2619 R117 R121 C105 FINAL DRIVE 2.2k R133 D105 (JN20) R183 C181 1.8k ∗ ∗...
  • Page 11 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) SP-A-GND C687 0.01 TU/AUX-A-GND CD-A-GND FR-A-GND FUNC-A-GND CD-D-GND CD-P-GND FR-D-GND CD-VM CD-VM TP601 JR601 JR611 R653 (Page 29) HOLD HOLD...
  • Page 12 CX-JN20/JN30 6-12. SCHEMATIC DIAGRAM – MAIN Section (4/4) – • See page 40 for IC Block Diagrams. (JN30:CIS) (4/4) CN801 (JN20/JN30:AEP,UK) RDS-DATA C912 C911 DATA FM 75Ω 100p 100p (COAXIAL) PLL-CE TUNER PACK R687 R676 R677 R678 SUPPLIED WITH ∗ 4.7k 2.2k C673,674...
  • Page 13 CX-JN20/JN30 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. FL901 FLUORESCENT INDICATOR TUBE JW902 R943 R942 C914 C915 1.8k 1.8k JW901...
  • Page 14 CX-JN20/JN30 6-19. SCHEMATIC DIAGRAM – KEY Section – R801 R803 R809 R811 S801 S803 VOLUME TREBLE R802 C801 C802 R804 R810 C805 C806 R812 1000p 1000p 1000p 1000p R301 R302 R303 R304 R305 R306 1.2k 1.2k S306 S301 S302 S303 S304 S305 R805...
  • Page 15 CX-JN20/JN30 6-21. SCHEMATIC DIAGRAM – PT Section – (JN20) VH(AC) VH(AC) VL(AC) VL(AC) GND(M) FIL-1 FIL-2 (Page 28) P-ON VSTBY WH092 PT002 POWER TRANSFORMER WH093 (MAIN) VM(AC) VM(AC) ∗ VH(AC) NOT REPLACEABLE: BUILT IN TRANSFORMER VH(AC) VL(AC) ∗ VL(AC) GND(M) FIL-1 (Page 28) FIL-2...

  • Page 16: Cd Mechanism Deck Section

    CX-JN20/JN30 7-7. CD MECHANISM DECK SECTION-1 (CDM74S-K6BD71A) M741 CD mechanism deck section -2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-243-815-01 TABLE (LOADING) 1-687-134-12 MOTOR (TB) BOARD 4-218-252-61 SCREW (+PTPWH M2.6), FLOATING 4-243-816-01 TRAY 4-218-253-21 SCREW (M2.6), +BTTP 3-231-598-01 SHEET (BA) 1-687-132-12 SENSOR BOARD 4-245-570-01 GEAR (JOINT)
  • Page 17 CX-JN20/JN30 7-8. CD MECHANISM DECK SECTION-2 (CDM74S-K6BD71A) S711 M751 CD mechanism deck section -3 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-218-252-61 SCREW (+PTPWH M2.6), FLOATING 3-016-533-11 WASHER (FR), STOPPER 4-244-034-01 BELT (LOADING) 4-244-108-01 GEAR, SWING 4-224-608-01 COLLAR, SWING 4-224-613-01 GEAR (SHAFT) 4-218-253-31 SCREW (M2.6), +BTTP...
  • Page 18 CX-JN20/JN30 7-9. CD MECHANISM DECK SECTION-3 (CDM74S-K6BD71A) BU-K6BD71A Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4955-707-2 PULLEY (A5) ASSY, CHUCKING 4-227-549-11 INSULATOR 1-471-035-11 MAGNET ASSY 4-227-045-31 SPRING (INSULATOR), COIL 4-231-189-01 PULLEY (B), CHUCKING 4-231-151-01 STOPPER (BU) 4-218-252-61 SCREW (+PTPWH M2.6), FLOATING 4-218-253-31 SCREW (M2.6), +BTTP 4-985-672-01 SCREW (+PTPWH M2.6), FLOATING...

  • Page 19: Base Unit Section

    CX-JN20/JN30 7-10. BASE UNIT SECTION (BU-K6BD71A) not supplied (M702) not supplied (M701) The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref.

  • Page 20: Electrical Parts List

    CX-JN20/JN30 SECTION 8 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.

  • Page 21: Cd Key Board

    CX-JN20/JN30 CD KEY DRIVER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark FB802 1-550-907-21 BEAD, FERRITE (CHIP) (2012) R803 1-216-809-11 METAL CHIP 1/10W FB803 1-550-907-21 BEAD, FERRITE (CHIP) (2012) R804 1-216-809-11 METAL CHIP 1/10W FB804 1-550-907-21 BEAD, FERRITE (CHIP) (2012) R805 1-216-809-11 METAL CHIP 1/10W...
  • Page 22 CX-JN20/JN30 DRIVER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C751 1-162-306-11 CERAMIC 0.01uF C752 1-164-159-21 CERAMIC 0.1uF A-4732-924-A KEY BOARD, COMPLETE ******************** < CONNECTOR > < CAPACITOR > CN701 1-785-338-11 PIN, CONNECTOR (LIGHT ANGLE) 12P CN702 1-784-766-11 CONNECTOR, FFC 5P C801...
  • Page 23 CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R816 1-216-797-11 METAL CHIP 1/10W C032 1-104-663-11 ELECT 33uF C033 1-165-621-11 CERAMIC CHIP 0.1uF < SWITCH/ROTARY ENCODER > (JN30) C034 1-165-621-11 CERAMIC CHIP 0.1uF S301 1-762-875-21 SWITCH, KEYBOARD (PLAY/PRESET N) (JN30) S302 1-762-875-21 SWITCH, KEYBOARD (STOP/CLEAR x)

  • Page 24: Ceramic Chip

    CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C128 1-100-152-11 CERAMIC CHIP 100PF 100V C605 1-130-481-00 MYLAR 0.0068uF 5% C606 1-130-481-00 MYLAR 0.0068uF 5% C129 1-100-152-11 CERAMIC CHIP 100PF 100V C607 1-162-962-11 CERAMIC CHIP 470PF C130 1-100-152-11 CERAMIC CHIP...
  • Page 25 CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C695 1-126-925-11 ELECT 470uF D107 6-500-335-01 DIODE MC2838 C698 1-162-974-11 CERAMIC CHIP 0.01uF D108 6-500-335-01 DIODE MC2838 C699 1-162-974-11 CERAMIC CHIP 0.01uF D109 8-719-046-74 DIODE AU-01Z-V1 C730 1-162-927-11 CERAMIC CHIP 100PF...
  • Page 26 CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR202 1-216-864-11 SHORT CHIP Q112 8-729-823-99 TRANSISTOR 2SC2909-AA Q117 8-729-120-28 TRANSISTOR 2SC1623-L5L6 JR203 1-216-864-11 SHORT CHIP Q118 8-729-120-28 TRANSISTOR 2SC1623-L5L6 JR204 1-216-864-11 SHORT CHIP Q119 8-729-120-28 TRANSISTOR 2SC1623-L5L6 JR601 1-216-864-11 SHORT CHIP...
  • Page 27 CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R007 1-219-397-11 RES-CHIP 1/8W R046 1-216-065-00 RES-CHIP 4.7K 1/10W (JN30) R008 1-219-107-91 RES-CHIP 1/8W R047 1-216-061-00 RES-CHIP 3.3K 1/10W (JN20) (JN30) R008 1-219-397-11 RES-CHIP 1/8W R047 1-216-065-00 RES-CHIP 4.7K 1/10W...
  • Page 28 CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark (JN30) 0 R150 1-245-545-11 METAL OXIDE 0.22 R105 1-216-835-11 METAL CHIP 1/10W (JN20) 0 R151 1-245-545-11 METAL OXIDE 0.22 R106 1-216-834-11 METAL CHIP 1/10W 0 R152 1-245-545-11 METAL OXIDE 0.22 (JN30)
  • Page 29 CX-JN20/JN30 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark (JN30) R620 1-216-838-11 METAL CHIP 1/10W R258 1-216-841-11 METAL CHIP 1/10W R621 1-216-830-11 METAL CHIP 5.6K 1/10W (JN30) R622 1-216-830-11 METAL CHIP 5.6K 1/10W R259 1-216-841-11 METAL CHIP 1/10W R623 1-216-828-11 METAL CHIP...
  • Page 30 CX-JN20/JN30 MAIN MOTOR (LD) MOTOR (TB) PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-687-134-12 MOTOR (TB) BOARD R686 1-216-828-11 METAL CHIP 3.9K 1/10W ***************** R687 1-216-821-11 METAL CHIP 1/10W R688 1-216-816-11 METAL CHIP 1/10W <...
  • Page 31 CX-JN20/JN30 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C926 1-164-156-11 CERAMIC CHIP 0.1uF JR218 1-216-864-11 SHORT CHIP C927 1-164-156-11 CERAMIC CHIP 0.1uF JR219 1-216-864-11 SHORT CHIP C930 1-164-156-11 CERAMIC CHIP 0.1uF JR220 1-216-864-11 SHORT CHIP C931 1-164-156-11 CERAMIC CHIP 0.1uF...

  • Page 32: Metal Chip

    CX-JN20/JN30 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R114 1-247-831-11 CARBON 1/4W R627 1-216-841-11 METAL CHIP 1/10W R118 1-249-393-11 CARBON 1/4W R628 1-216-841-11 METAL CHIP 1/10W R629 1-216-841-11 METAL CHIP 1/10W R119 1-247-831-11 CARBON 1/4W R630 1-216-841-11 METAL CHIP...
  • Page 33 CX-JN20/JN30 PANEL SENSOR Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R935 1-216-845-11 METAL CHIP 100K 1/10W R936 1-216-845-11 METAL CHIP 100K 1/10W < DIODE > R937 1-216-845-11 METAL CHIP 100K 1/10W D091 6-500-334-01 DIODE MC2836 R938 1-216-845-11 METAL CHIP 100K...
  • Page 34 CX-JN20/JN30 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C912 1-162-282-31 CERAMIC 100PF (JN20/JN30: AEP, UK) C913 1-128-821-11 CERAMIC 1000PF (JN20/JN30: AEP, UK) C950 1-128-815-11 CERAMIC 330PF M741 A-4723-963-A MOTOR ASSY, TABLE M751 A-4736-655-A MOTOR ASSY, LOADING 0 PT002 1-439-925-11 TRANSFORMER, POWER (JN30) 0 PT002...

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