Sony CX-BK2 Service Manual
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Sony CX-BK2 Service Manual

Sony CX-BK2 Service Manual

Compact disc deck receiver
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SERVICE MANUAL

Ver 1.1 2004.02
CX-BK2 is the amplifier, CD player
and tuner section in BMZ-K2.
Licensed by BBE Sound, Inc. under USP4638258, 5510752 and
5736897.
TUNER
FM tuning range
87.5 MHz to 108 MHz
FM usable sensitivity (IHF) 13.2 dBf
75 Ω (unbalanced)
FM antenna terminal
AM tuning range
530 kHz to 1710 kHz (10 kHz step)
531 kHz to 1710 kHz (9 kHz step)
350 µ V/m
AM usable sensitivity
AM antenna
Loop antenna
AMPLIFIER
Power output
160 W + 160 W (40 Hz - 20 kHz,
THD less than 1%, 6 Ω)
200 W + 200 W (40 Hz - 20 kHz,
THD 10%, 6 Ω)
0.08 % (120 W, 1 kHz, 6 Ω)
Total harmonic distortion
LINE IN VIDEO: 1.0 Vp-p (75 Ω)
Input
LINE IN AUDIO: 1.1 V
AUX (MD) IN: 1.1 V
SPEAKERS: 6 Ω or more
Outputs
PHONES: 32 Ω or more
AUX (MD) OUT: 500 mV
VIDEO OUT: 1.0 Vp-p (75 Ω)
Sony Corporation
9-877-424-02
2004B05-1
Home Audio Company
C 2004.02
Published by Sony Engineering Corporation
Model Name Using Similar Mechanism
CD Mechanism Type
CD
Section
Base Unit Name
Optical Pick-up Name

SPECIFICATIONS

CD PLAYER
Laser
D/A converter
Signal-to-noise ratio
Wow and flutter
GENERAL
Power requirements
Power consumption
Power consumption in standby mode
Dimensions (w/h/d)
Mass
Specifications and external appearance are subject to change
without notice.
COMPACT DISC DECK RECEIVER
CX-BK2
US Model
CX-BK1
CDM69BV-30CBD64NS
BU-30CBD64NS
A-MAX.3
Semiconductor laser (λ = 800 nm)
Emission duration: continuous
1 bit dual
85 dB (1 kHz, 0 dB)
Unmeasurable
120 V AC, 60 Hz
145 W
with ECO mode on: 0.25 W
with ECO mode off: 24 W
Approx. 211 × 379 × 419 mm
(8 3/8 × 15 ×16 5/8 in.)
Approx. 9.6 kg (21 lbs 3 oz)

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  • Page 1: Service Manual

    CX-BK2 SERVICE MANUAL US Model Ver 1.1 2004.02 CX-BK2 is the amplifier, CD player and tuner section in BMZ-K2. Licensed by BBE Sound, Inc. under USP4638258, 5510752 and Model Name Using Similar Mechanism CX-BK1 5736897. CD Mechanism Type CDM69BV-30CBD64NS Section...
  • Page 2 LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY.

  • Page 3: Table Of Contents

    CX-BK2 TABLE OF CONTENTS SERVICING NOTES 7-17. Schematic Diagram – AMP Board (1/2) – ....44 ..........4 7-18. Schematic Diagram – AMP Board (2/2) – ....45 7-19. Printed Wiring Board – AMP Board – ......46 GENERAL 7-20. Printed Wiring Board – HEADPHONE Board – ..47 Location of Controls ............

  • Page 4: Servicing Notes

    CX-BK2 SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.
  • Page 5 CX-BK2 – main board, ACDC board – • For connecting the CD mechanism deck, prepare three extension jigs. (Refer to “– CD mechanism deck –”) AMP board speaker board front panel section PT board ACDC board main board tuner unit...

  • Page 6: General

    CX-BK2 SECTION 2 This section is extracted from instruction manual. GENERAL • LOCATION OF CONTROLS # TITLE Main unit: front 6 PLA Y MODE When the unit is turned off: activates or deactivated Selects various CD play mode. DEMO. 7 TUNING DOWNf/r, UPg/t Changes the display in MP3-CD or USB source.

  • Page 7: Play Mode

    CX-BK2 3 c/d 0 ENTER Remote commander Starts CD play. ! SLEEP Selects sleep-timer mode. @ VOLUME +, - r/ tPRESET Tuner: selects a preset station. M/ N ALBUM Selects a previous or a succeeding album. 4 PLAY MODE REPEAT Selects repeat CD playback mode.

  • Page 8: Disassembly

    CX-BK2 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed.

  • Page 9: Panel

    CX-BK2 Note: Follow the disassembly procedure in the numerical order given. 1 three screws 3-2. PANEL (BVTP3 × 10) 6 three screws (BVTP3 × 10) 3 four claws 2 four screws (BVTP3 × 10) 0 right panel 5 panel (left)

  • Page 10: Front Panel Assy

    CX-BK2 3-4. FRONT PANEL ASSY 2 wire (flat type) (17core) (CN004) 1 wire (flat type) (19core) (CN905) 8 front panel assy 5 two screws 7 two claws (BVTP3 × 10) 3 connector (CN530) 4 five screws (BVTP3 × 10) 6 four screws (BVTP3 ×...

  • Page 11: Rear Cover

    CX-BK2 3-6. REAR COVER 1 seven screws (BVTP3 × 10) 3 connector (CN303) 4 rear cover 3-7. TUNER (FM/AM) 1 two screws (BVTP3 × 8) 2 tuner (FM/AM)

  • Page 12: Speaker Board

    CX-BK2 3-8. SPEAKER BOARD 2 two screws (BVTP3 × 10) 3 speaker board 1 connector (CN503) 3-9. ACDC BOARD, POWER TRANSFORMER 4 two screws 1 connector (CN003) (BVTP3 × 10) 2 connector (CN006) 6 ACDC board 5 seven screws (BVTP3 × 10)

  • Page 13: Amp Board

    CX-BK2 3-10. AMP BOARD 4 two screws (BVTP3 × 10) 3 two screws (BVTP3 × 10) 5 AMP board 2 CD support board 1 two screws (BVTP3 × 10) 3-11. CD MECHANISM DECK (CDM69BV-30CBD64NS) 1 four screws (BVTP3 × 10)

  • Page 14: Base Unit Section

    CX-BK2 3-12. BASE UNIT SECTION 2 screw (+PTPWH) (M2) (DIA. 7) 3 boss 1 floating screw (DIA. 12) 4 boss 6 boss 7 base unit section 5 boss 3-13. BASE UNIT (BU-30CBD64NS) qa base unit (BU-30CBD64NS) 4 floating screw (+PTPWHM2.6 × 6)

  • Page 15: Bd Board

    CX-BK2 3-14. BD BOARD 4 wire (flat type) (16 core) 2 wire (flat type) (11 core) 3 Remove the solder (four portions). 5 BD board 1 wire (flat type) (23 core) 3-15. SW (1) BOARD, SW (2) BOARD, SW (3) BOARD, SW (4) BOARD, BRACKET (TOP) ASSY...

  • Page 16: Connector Board

    CX-BK2 3-16. CONNECTOR BOARD 4 connector (CN710) – bottom view – 5 connector (CN703) CONNECTOR board 2 four screws (BVTP2.6 × 8) 6 CONNECTOR board 1 Remove five solders. 3-17. MOTOR (STOCKER) ASSY (STOCKER) (M761) 3 two screws (BVTP2.6 × 8)

  • Page 17: Motor (Roller) Assy (Roller) (M781)

    CX-BK2 3-18. MOTOR (ROLLER) ASSY (ROLLER) (M781) 3 two screws 2 Remove two solders. 4 ROLLER MOTOR board 5 motor (roller) assy (roller)(M781) 1 belt (roller V) 3-19. MOTOR (MODE) ASSY (MODE) (M771) 3 two screws (BVTP2.6 × 8) 1 Remove five solders of rotary encoder.

  • Page 18: Rubber Roller (Slider) Assy

    CX-BK2 3-20. RUBBER ROLLER (SLIDER) ASSY 8 step screw 5 step screw 1 step screw 9 tension spring 0 rubber roller (slider 2) (slider 4) assy 6 tension spring (base slider 4) 2 rubber roller (slider S) assy qa rubber roller...

  • Page 19: Cam (Gear)

    CX-BK2 3-22. CAM (GEAR) qf cam (gear) : Note 6 gear (mode 5) qd screw 5 screw (PTPWH2.6 × 8) 4 gear (mode 5) qs gear(mode cam) 3 screw (PTPWH2.6 × 8) qa screw (PTPWH2.6 × 8) 2 pulley (mode deceleration)

  • Page 20: Assembly

    CX-BK2 SECTION 4 ASSEMBLY • This set can be assembled in the order shown below. 4-1. HOW TO INSTALL THE CAM (EJECT LOCK) 1 Rotate the cam (BU U/D) fully in the direction of arrow. 2 Engage the gear (eject lock) and the gear of the cam (eject lock) aligning the mark with the center of the gear (eject lock).

  • Page 21: How To Install The Gear (Mode C)

    CX-BK2 4-3. HOW TO INSTALL THE GEAR (MODE C) 1 Align the mark on the rotary encoder (S771) with the projection of the assy. 2 Check that the cam (BU U/D) can not be rotated in the direction of arrow.

  • Page 22: How To Install The Rotary Encoder (S702), Gear (Stocker Communication)

    CX-BK2 4-5. HOW TO INSTALL THE ROTARY ENCODER (S702), GEAR (STOCKER COMMUNICATION) 4 gear 5 screw (PTPWH2.6 × 8) (stocker communication) 3 screw 7 two screws (PWH2 × 6) (PTPWH2.6 × 8) 1 rotary encoder Engage the rotary encoder (S702)

  • Page 23: Test Mode

    CX-BK2 SECTION 5 TEST MODE [Cold Reset] sage “EQ MAX”, “EQ MIN” or “EQ FLAT” is displayed in The cold reset clears all data including preset data stored in this order. the RAM to initial conditions. Execute this mode when re- turning the set to the customer.

  • Page 24: Electrical Adjustments

    CX-BK2 SECTION 6 ELECTRICAL ADJUSTMENTS RFDC signal waveform CD SECTION VOLT/DIV: 200 mV TIME/DIV: 500 ns Note: 1. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 2. Use an oscilloscope with more than 10MΩ impedance. 3. Clean the object lens by an applicator with neutral detergent when the level: 0.6 ±...
  • Page 25 CX-BK2 E-F Balance Adjustment Checking Location: Connection: – BD BOARD (Side B) – oscilloscope BD board TP (TE) TP (VC) – Procedure: Connect an oscilloscpe to test point TP (TE) and TP (VC) on the BD board. AC is put in pushing button to enter the CD test mode.
  • Page 26 CX-BK2 MEMO...

  • Page 27: Diagrams

    CX-BK2 SECTION 7 DIAGRAMS 7-1. BLOCK DIAGRAM – CD Section – • R-ch is omitted due to same as L-ch. • SIGNAL PATH : CD OPTICAL PICK-UP DIGITAL SERVO, RF AMP DIGITAL SIGNAL PROCESSOR BLOCK IC101 IC103 RF AC RFAC VDD (3.3V)

  • Page 28: Block Diagram - Tuner/Usb Section

    CX-BK2 7-2. BLOCK DIAGRAM – TUNER/USB Section – • R-ch is omitted due to same as L-ch. • SIGNAL PATH : CD : TUNER : REC : USB CD-L : AUX IN (Page 27) : LINE IN (AUDIO) INPUT SELECT...

  • Page 29: Block Diagram - Amp Section

    CX-BK2 7-3. BLOCK DIAGRAM – AMP Section – M301 (FAN) SWITCHING Q618 OUTPUT LEVEL • R-ch is omitted due to same as L-ch. DETECT R-CH R-CH Q620, 621 FAN MOTOR • SIGNAL PATH DRIVE : TUNER Q301 – 303 SWITCHING –...

  • Page 30: Block Diagram - Power Supply Section

    CX-BK2 7-4. BLOCK DIAGRAM – POWER SUPPLY Section – – VH POWER, VOLTAGE DC UNBALANCE POWER MONITOR POWER MONITOR AC DETECT (Page 29) DETECT DETECT Q105, 106 Q107 – 109 D139, 140 DC UNBALANCE RECT DETECT D116, 117 D112, 113...

  • Page 31: Note For Printed Wiring Boards And Schematic Diagrams

    CX-BK2 7-5. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location Note on Printed Wiring Boards: Note on Schematic Diagram: tuner unit main board • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF •...

  • Page 32: Printed Wiring Board - Bd Board

    CX-BK2 7-6. PRINTED WIRING BOARD – BD Board – • See page 31 for Circuit Boards Location. :Uses unleaded solder. • Semiconductor Location Ref. No. Location IC101 IC102 IC103 IC104 IC121 Q101 C272 IC104 IC101 TP2(TE) CN507 (Page 37) TP6(RFDC)

  • Page 33: Schematic Diagram - Bd Board

    CX-BK2 7-7. SCHEMATIC DIAGRAM – BD Board – • • See page 36 for Waveforms. See page 58 for IC Block Diagrams. C203 1000p C269 R216 47 4V FB102 C256 C257 0.33 C263 C259 C270 220p 47 4V C255 C249...

  • Page 34: Printed Wiring Boards - Changer Section

    CX-BK2 7-8. PRINTED WIRING BOARDS – CHANGER Section – • :Uses unleaded solder. See page 31 for Circuit Boards Location. SW (1) BOARD (Page 37) SW (2) BOARD IC701 IC751 IC721 IC711 SW (3) BOARD S718 (STOCKING) SW (4) BOARD...

  • Page 35: Schematic Diagram - Changer Section

    CX-BK2 7-9. SCHEMATIC DIAGRAM – CHANGER Section – • See page 58 for IC Block Diagram. CN751 CN702 R731 DIODE DIODE IC751 D SENSE D SENSE R733 CN701 R734 DISC INSERT DETECT SENSOR D+3.3V 3 . 2 IC751 R732 M+12V...
  • Page 36 CX-BK2 • Waveforms – MAIN Board – – USB AUX Board – – BD Board – 1 IC103 qg (RFAC) (CD play mode) wa IC901 qg (X2) ea IC700 2 (XTO) (USB mode) 1.2 Vp-p 2.4 Vp-p 37 Vp-p 200 ns...

  • Page 37: Printed Wiring Board - Main Board

    CX-BK2 7-10. PRINTED WIRING BOARD – MAIN Board – • See page 31 for Circuit Boards Location. :Uses unleaded solder. • Semiconductor Location (Page 42) Ref. No. Location USB AUX FM 75Ω BOARD (COAXIAL) FM/AM/TUNER PACK CN701 D015 SUPPLIED WITH THE...

  • Page 38: Schematic Diagram - Main Board (1/4)

    CX-BK2 7-11. SCHEMATIC DIAGRAM – MAIN Board (1/4) – • • See page 36 for Waveforms. See page 58 for IC Block Diagram. (1/4) CN901 ELV_E3 R901 ELV_E2 R920 R902 ELV_E1 C949 R950 C948 R903 100p 100p ELV_E0 R904 SLD_E3...

  • Page 39: Schematic Diagram - Main Board (2/4)

    CX-BK2 7-12. SCHEMATIC DIAGRAM – MAIN Board (2/4) – (2/4) D-GND (Page 38) C664 R671 R676 R515 2.2k R699 5.6k R513 R516 D501 UDZSTE173.9B R518 R517 C519 R525 C639 R695 R697 C518 2.7k 100k C503 C517 R643 JR617 R606 1.2k...

  • Page 40: Schematic Diagram - Main Board (3/4)

    CX-BK2 7-13. SCHEMATIC DIAGRAM – MAIN Board (3/4) – • See page 58 for IC Block Diagrams. (Page 38) (Page 38) (Page 38) (3/4) C876 C872 C873 0.0033 0.0033 Q890 R884 R885 C477 KTA1266GR R887 3.9k R880 3.9k Q891,892 5.6k 5.6k...

  • Page 41: Schematic Diagram - Main Board (4/4)

    CX-BK2 7-14. SCHEMATIC DIAGRAM – MAIN Board (4/4) – • See page 58 for IC Block Diagram. (Page 39) (4/4) R681 220k R677 CN007 Q625 2SC3052F-T 1-LF VSTBY(+9V) FEED BACK R680 R679 C675 Q624 220k 100k 0.015 SWITCH M-GND 2SK2158...

  • Page 42: Printed Wiring Board - Usb Aux Board

    CX-BK2 7-15. PRINTED WIRING BOARD – USB AUX Board – • :Uses unleaded solder. See page 35 for Circuit Boards Location. USB AUX BOARD EP702 C725 (CHASSIS) EP702 C724 C760 R736 X700 C715 R712 JW703 C706 C756 C759 C755 R707...

  • Page 43: Schematic Diagram - Usb Aux Board

    CX-BK2 7-16. SCHEMATIC DIAGRAM – USB AUX Board – • See page 36 for Waveform. R700 C710 R701 C717 C719 Q702 C700 C701 DTA114EKA-T146 USB ON/OFF SWITCH +5V REGULATOR IC701 Q701 C708 NJM78M05S 2SB1132-T1 C712 0.47 01-R 0.47 R710 220k...

  • Page 44: Schematic Diagram - Amp Board (1/2)

    CX-BK2 7-17. SCHEMATIC DIAGRAM – AMP Board (1/2) – (1/2) EP502 R541 D503 2.2k R529 1SS184-TE85L 4.7k R037 R537 C524 (CHASSIS) 5.6k R543 2.2k 1/2W D510 R539 1SS181-TE85L Q507,509 Q531 R035 R036 D501 2SD2562 R505 R513 1SS181-TE85L BIAS 6.8k D509...

  • Page 45: Schematic Diagram - Amp Board (2/2)

    CX-BK2 7-18. SCHEMATIC DIAGRAM – AMP Board (2/2) – (Page 44) (2/2) R695 D629 R681 R686 C636 1SS355TE-17 Q618 3.3k 100p 1/2W 2SK3053 SWITCHING C637 D623 1SS355TE-17 R699 3.3k Q620,621 D626 OUTPUT LEVEL FMB-G16L R676 DETECT 2.7k D631 R661 C631 1SS355TE-17 3.3k...

  • Page 46: Printed Wiring Board - Amp Board

    CX-BK2 7-19. PRINTED WIRING BOARD – AMP Board – • :Uses unleaded solder. See page 31 for Circuit Boards Location. AMP BOARD C521 R559 C522 R560 Q527 R561 R591 R066 R090 R562 D020 Q012 C514 R037 C513 JW527 C517 R558...

  • Page 47: Printed Wiring Board - Headphone Board

    CX-BK2 7-20. PRINTED WIRING BOARD – HEADPHONE Board – • 7-21. SCHEMATIC DIAGRAM – HEADPHONE Board – See page 31 for Circuit Boards Location. :Uses unleaded solder. HEADPHONE BOARD JW524 R525 R523 J521 CN530 JW523 PHONES JR501 BOARD O-P0WER JW523...

  • Page 48: Printed Wiring Board - Speaker Board

    CX-BK2 7-22. PRINTED WIRING BOARD – SPEAKER Board – • See page 31 for Circuit Boards Location. :Uses unleaded solder. SPEAKER BOARD R571 C525 – C527 JK502 L501 SPEAKER C533 C535 R570 – BOARD CN601 (Page 46) L502 C534 C524...

  • Page 49: Schematic Diagram - Speaker Board

    CX-BK2 7-23. SCHEMATIC DIAGRAM – SPEAKER Board – CN503 FR SP OUT(R) FR SP GND(R) FR SP OUT(L) FR SP GND(L) (Page 45) L502 R570 1.7µH R571 L501 1/2W 1.7µH 1/2W JK502 C533 0.0022 SPEAKER C532 0.0022 R573 R572 C525...

  • Page 50: Printed Wiring Boards - Key Section

    CX-BK2 7-24. PRINTED WIRING BOARDS – KEY Section – • See page 31 for Circuit Boards Location. :Uses unleaded solder. • Semiconductor Location Ref. No. Location KEY LED RMC BOARD LEFT BUTTON BOARD IC601 S311 − 320, IC602 S331 − 339...

  • Page 51: Schematic Diagram - Key Section

    CX-BK2 7-25. SCHEMATIC DIAGRAM – KEY Section – • See page 36 for Waveform. Q601-605 LED DRIVE LED601 SLR-325VC (DISC SLOT ILLUMINATION) ~~ ~ CN613 CN612 Q601 Q602 Q603 Q604 Q605 FMA9AT148 FMA9AT148 FMA9TA148 FMA9TA148 FMA9TA148 R616 R617 R622 R618...

  • Page 52: Printed Wiring Boards - Lcd Section

    CX-BK2 7-26. PRINTED WIRING BOARDS – LCD Section – • See page 31 for Circuit Boards Location. :Uses unleaded solder. • Semiconductor Location Ref. No. Location RIGHT BUTTON (2) BOARD RIGHT BUTTON (1) BOARD LCD VOL BOARD IC001 R252 JR108...

  • Page 53: Schematic Diagram - Lcd Section

    CX-BK2 7-27. SCHEMATIC DIAGRAM – LCD Section – R252 R251 R253 R254 R255 R256 R257 R258 LED254 LED252 LED206 LED209 LED212 LED215 LED218 LED221 LED,SELU1910CXM LED,SELU1910CXM SLR-325DCT31 SLR-325DCT31 SLR-325DCT31 SLR-325DCT31 SLR-325DCT31 SLR-325DCT31 LF38 LF38 LED253 LED251 LED205 LED208 LED211 LED214...

  • Page 54: Printed Wiring Board - Acdc Board

    CX-BK2 7-28. PRINTED WIRING BOARD – ACDC Board – • See page 31 for Circuit Boards Location. :Uses unleaded solder. • Semiconductor Location Ref. No. Location D002 (Page 46) D004 AMP BOARD CN004 D005 ACDC BOARD (CHASSIS) D006 D007 JW042...

  • Page 55: Schematic Diagram - Acdc Board

    CX-BK2 7-29. SCHEMATIC DIAGRAM – ACDC Board – CN006 REG-GND(+7V) C008 REG-GND(+4V) JW091 100V REG-GND(+12V) JW090 (Page 45) CN003 D004 D10XB20 C016 3300 JW082 C015 3300 FAMP-A-GND SP-GND R104 D111 4.7k 1SS355TE-17 R113 SP-GND C007 2.2k VM+9V 100V R101 C120...

  • Page 56: Printed Wiring Board - Pt Board

    CX-BK2 7-30. PRINTED WIRING BOARD – PT Board – • See page 31 for Circuit Boards Location. :Uses unleaded solder. ACDC BOARD (Page 54) PT BOARD CN010 ∗ NOT REPLACEABLE: BUILT IN TRANSFORMER PT001 POWER TRANSFOEMER (MAIN) JW012 JW013 CN015...

  • Page 57: Schematic Diagram - Pt Board

    CX-BK2 7-31. SCHEMATIC DIAGRAM – PT Board – PT001 POWER TRANSFORMER (MAIN) ∗ NOT REPLACEABLE: BUILT IN TRANSFORMER ∗ JW014 CN015 VH(AC) VH(AC) VL(AC) VL(AC) CN010 REG (AC) C009 0.47 (Page 55) REG (AC) (Page 55) The components identified by mark 0 or dotted line with mark 0 are critical for safety.
  • Page 58 CX-BK2 • IC Block Diagrams – BD Board – IC101 CXD3068Q IC102 AN41020A 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 DVDD2 ASYE PVCC/2 DIGITAL ASYMMETRY CORRECTOR DIGITAL DOUT...
  • Page 59 CX-BK2 IC103 CXA2647N-T4 ROM/RW DC OFST RFDCI – – RFDC – ROM/RW VOFST APC AMP RF OFF AT VCC RFAC EQ IN ROM/RW RFAC AC SUM SUMMING VOFST – – ROM/RW TE BAL ROM/RW – VOFST – – DVC OR Hi-Z...
  • Page 60 CX-BK2 IC104 TC94A20F-CX4 Timing SubQ General Generator /RESET Input Port MIMD /MICS /MILP VSSM MIDIO /MICK /MIACK VDDM VDDT BCKO MP3REQ LRCKO SDIO BCKIA LRCKIA VDDT Switch SDI1 BCKIB...
  • Page 61 CX-BK2 – CONNECTOR Board – – MAIN Board – IC701, 711, 721 BA6956AN IC501 BU4052BCF-E2 2XCOM CONTROL LOGIC XCOM IC601 M61529FP-D60G 42 41 39 38 37 34 33 32 31 30 TONE CONTROL ELECTRICAL (BASS/MID/TREBLE) VOLUME INPUT BASS BOOST TONE ATT...
  • Page 62 CX-BK2 IC603 NJM2156M (TE2) 19 18 17 16 12 11 BIAS MACH3 IC905 MM1614A CURRENT BIAS LIMITTER REFERENCE – DRIVER THERMAL SHUTDOWN...

  • Page 63: Ic Pin Function Description

    CX-BK2 7-32. IC PIN FUNCTION DESCRIPTION • BD BOARD IC101 CXD3068Q (DIGITAL SERVO, DIGITAL SERVO PROCESSOR) Pin No. Pin Name Description DVDD0 — Power supply terminal (+3.3V) (digital system) XRST Reset signal input from the system controller “L”: reset MUTE Muting on/off control signal input terminal “H”: muting on Not used...
  • Page 64 CX-BK2 Pin No. Pin Name Description IGEN Stabilized current input for operational amplifiers AVDD0 — Power supply terminal (+3.3V) (analog system) ASYO EFM full-swing output terminal ASYI Asymmetry comparator voltage input terminal RFAC EFM signal input from the RF amplifier AVSS1 —...
  • Page 65 CX-BK2 • MAIN BOARD IC901 uPD703260YGF-S04-JBT-A (SYSTEM CONTROLLER) Pin No. Pin Name Description RDS_SIG Tuning signal level input terminal Not used RDS_DATA Serial data input terminal Not used AVREF0 — Reference voltage (+3.1V) input terminal AVSS — Ground terminal MICS...
  • Page 66 CX-BK2 Pin No. Pin Name Description PLLCE Latch signal output to the tuner unit PWM1 PWM signal output for focus offset adjustment MCLK Serial data transfer clock signal output to the tuner unit and input select IC PWM3 PWM signal output for RF offset adjustment...
  • Page 67 CX-BK2 Pin No. Pin Name Description RE_BAS Jog dial pulse input from the rotary encoder (BASS) RE_VOL Jog dial pulse input from the rotary encoder (VOLUME) RE_JOG Jog dial pulse input from the rotary encoder (MULTIJOG) KEY3 Key input terminal (A/D input)
  • Page 68 CX-BK2 • USB AUX BOARD IC700 uAC3553B (USB INTERFACE) Pin No. Pin Name Description System clock input terminal (12MHz) System clock output terminal (12MHz) AREG1 Connected to the external capacitor AVSS_12 — Ground terminal OUTL USB audio signal output terminal (L-ch)

  • Page 69: Exploded Views

    CX-BK2 SECTION 8 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark may have some difference from the original are seldom required for routine service.

  • Page 70: Front Panel Block-1

    CX-BK2 8-2. FRONT PANEL BLOCK-1 not supplied not supplied (LED board) front panel block-2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-688-414-11 HEADPHONE BOARD A-4733-399-A USB AUX BOARD, COMPLETE 1-688-407-11 LEFT BUTTON BOARD 3-229-336-01 SCREW, +BVWH TAPPING...

  • Page 71: Front Panel Block-2

    CX-BK2 8-3. FRONT PANEL BLOCK-2 not supplied front panel block-3 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4955-595-1 VOL ASSY, KNOB RTRY 4-245-101-01 KNOB (JOG), ROTARY X-4955-596-1 TRE ASSY, KNOB RTRY 1-688-408-11 RIGHT BUTTON (1) BOARD...

  • Page 72: Front Panel Block-3

    CX-BK2 8-4. FRONT PANEL BLOCK-3 not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4955-726-1 FRONT ASSY, CABINET 4-245-158-01 EMBLEM 4-245-075-01 PANEL, FRONT 4-245-077-01 PANEL (JOB) X-4955-408-1 PANEL,DISP ASSY 4-242-091-01 CUSHION 4-245-098-01 REFLECTOR (VOL)

  • Page 73: Chassis Block-1

    CX-BK2 8-5. CHASSIS BLOCK-1 not supplied PT001 chassis block-2 not supplied 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. No.

  • Page 74: Chassis Block-2

    CX-BK2 8-6. CHASSIS BLOCK-2 not supplied not supplied Q534 Q532 Q533 F001 Q531 not supplied CD mechanism deck section-1 not supplied not supplied (CD support board) not supplied not supplied not supplied The components identified by mark 0 or dotted line with mark 0 are critical for safety.

  • Page 75: (Cdm69Bv-30Cbd64Ns)

    CX-BK2 Ver 1.1 8-7. CD MECHANISM DECK SECTION-2 (CDM69BV-30CBD64NS) S702 M761 not supplied (ST encorder board) CD mechanism deck section-2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-686-725-12 STOCKER MOTOR BOARD 4-239-689-01 GEAR (STOCKER DECELERATION) 4-951-620-01 SCREW (2.6X8), +BVTP...

  • Page 76: Cd Mechanism Deck Section-2 (Cdm69Bv-30Cbd64Ns)

    CX-BK2 8-8. CD MECHANISM DECK SECTION-2 (CDM69BV-30CBD64NS) CD mechanism deck section-3 CD mechanism deck section-5 optical pick-up section Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-686-727-12 SW (1) BOARD 4-227-899-01 SCREW (DIA,12), FLOATING 1-686-728-12 SW (2) BOARD...

  • Page 77: Cd Mechanism Deck Section-3 (Cdm69Bv-30Cbd64Ns)

    CX-BK2 8-9. CD MECHANISM DECK SECTION-3 (CDM69BV-30CBD64NS) not supplied supplied not supplied supplied supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4955-447-1 PULLEY (A)(BU30) ASSY,CHUCKING 4-243-291-01 SPRING, TORSION 4-992-069-01 SCREW (+PTPWH) (M2) (DIA. 7)

  • Page 78: Cd Mechanism Deck Section-4 (Cdm69Bv-30Cbd64Ns)

    CX-BK2 8-10. CD MECHANISM DECK SECTION-4 (CDM69BV-30CBD64NS) supplied M781 CD mechanism deck section-5 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4954-626-1 LEVER (ROLLER) ASSY 4-240-041-01 SPRING (SLIDER 2), TENSION 4-239-666-01 GEAR 4-951-620-01 SCREW (2.6X8), +BVTP...

  • Page 79: Cd Mechanism Deck Section-5 (Cdm69Bv-30Cbd64Ns)

    CX-BK2 8-11. CD MECHANISM DECK SECTION-5 (CDM69BV-30CBD64NS) CD mechanism deck section-6 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-240-020-01 GEAR (TIMING) 4-239-699-01 PULLEY 4-239-708-02 BELT (FRONT), TIMING 4-247-349-02 BELT (ROLLER V) 4-239-697-01 GEAR (CENTER) 4-227-899-01 SCREW (DIA. 12), FLOATING...

  • Page 80: Cd Mechanism Deck Section-6 (Cdm69Bv-30Cbd64Ns)

    CX-BK2 8-12. CD MECHANISM DECK SECTION-6 (CDM69BV-30CBD64NS) not supplied M771 supplied S771 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-239-693-02 CAM (GEAR) 4-239-692-02 CAM (BU U/D) 1-686-723-12 SENSOR BOARD 4-239-694-01 GEAR (MODE CAM) 4-239-696-01 GEAR (EJECT LOCK)

  • Page 81: Optical Pick-Up Section (Bu-30Cbd64Ns)

    CX-BK2 8-13. OPTICAL PICK-UP SECTION (BU-30CBD64NS) 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. No. Part No. Description Remark...

  • Page 82: Electrical Parts List

    CX-BK2 SECTION 9 ACDC 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 83 CX-BK2 ACDC Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R115 1-216-834-11 METAL CHIP 1/10W R116 1-216-821-11 METAL CHIP 1/10W C517 1-126-959-11 ELECT 0.47uF R117 1-216-821-11 METAL CHIP 1/10W C518 1-126-959-11 ELECT 0.47uF R118 1-216-809-11 METAL CHIP...
  • Page 84 CX-BK2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D634 8-719-988-61 DIODE 1SS355TE-17 Q621 8-729-120-28 TRANSISTOR 2SC3052F-T1-LF D635 8-719-988-61 DIODE 1SS355TE-17 Q622 6-550-316-01 TRANSISTOR 2SB792A (RS) D636 8-719-988-61 DIODE 1SS355TE-17 D637 8-719-988-61 DIODE 1SS355TE-17 Q623 6-550-580-01 TRANSISTOR...
  • Page 85 CX-BK2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R535 1-216-809-11 METAL CHIP 1/10W R663 1-216-833-11 METAL CHIP 1/10W R536 1-216-809-11 METAL CHIP 1/10W R537 1-247-713-11 CARBON 1/2W R664 1-216-061-00 RES-CHIP 3.3K 1/10W R538 1-247-713-11 CARBON...
  • Page 86 CX-BK2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C131 1-110-563-11 CERAMIC CHIP 0.068uF < CONNECTOR > C132 1-164-227-11 CERAMIC CHIP 0.022uF CN101 1-794-424-11 CONNECTOR, FCC/FPC 16P C133 1-125-838-11 CERAMIC CHIP 2.2uF 6.3V CN102 1-784-834-21 CONNECTOR, FFC (LIF (NON-ZIF)) 23P...
  • Page 87 CX-BK2 CONNECTOR Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R155 1-216-864-11 SHORT CHIP R162 1-216-833-11 METAL CHIP 1/10W R319 1-216-864-11 SHORT CHIP R163 1-216-833-11 METAL CHIP 1/10W R321 1-216-864-11 SHORT CHIP R351 1-216-864-11 SHORT CHIP...
  • Page 88 CX-BK2 CONNECTOR HEADPHONE KEY LED RMC Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R711 1-249-415-11 CARBON 1/4W C602 1-162-927-11 CERAMIC CHIP 100PF R712 1-247-807-31 CARBON 1/4W C603 1-162-927-11 CERAMIC CHIP 100PF R721 1-249-415-11 CARBON 1/4W...
  • Page 89 CX-BK2 KEY LED RMC LCD VOL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R331 1-216-816-11 METAL CHIP 1/10W C364 1-162-964-11 CERAMIC CHIP 0.001uF R332 1-216-819-11 METAL CHIP 1/10W C365 1-162-927-11 CERAMIC CHIP 100PF R333 1-216-821-11 METAL CHIP...
  • Page 90 CX-BK2 LCD VOL LEFT BUTTON MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R337 1-216-827-11 METAL CHIP 3.3K 1/10W < RESISTOR > R338 1-216-829-11 METAL CHIP 4.7K 1/10W R339 1-218-867-11 METAL CHIP 6.8K 1/10W R101...
  • Page 91 CX-BK2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C625 1-136-161-00 FILM 0.047uF C908 1-162-964-11 CERAMIC CHIP 0.001uF C626 1-136-161-00 FILM 0.047uF C909 1-162-977-11 CERAMIC CHIP 0.0018uF 10% C627 1-137-457-11 MYLAR 0.0027uF 5% C628 1-137-457-11 MYLAR 0.0027uF 5%...
  • Page 92 CX-BK2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR701 1-216-296-00 SHORT CHIP CN509 1-568-830-11 CONNECTOR, FFC 11P JR702 1-216-864-11 SHORT CHIP CN901 1-779-295-11 CONNECTOR, FFC (LIF (NON-ZIF)) 27P CN902 1-779-291-11 CONNECTOR, FFC (LIF (NON-ZIF)) 23P...
  • Page 93 CX-BK2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R640 1-216-861-11 METAL CHIP 2.2M 1/10W R019 1-216-817-11 METAL CHIP 1/10W R641 1-216-861-11 METAL CHIP 2.2M 1/10W R020 1-216-864-11 SHORT CHIP R642 1-216-822-11 METAL CHIP 1.2K...
  • Page 94 CX-BK2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R773 1-216-864-11 SHORT CHIP R708 1-216-833-11 METAL CHIP 1/10W R774 1-216-864-11 SHORT CHIP R709 1-216-833-11 METAL CHIP 1/10W R778 1-216-864-11 SHORT CHIP R710 1-216-833-11 METAL CHIP...
  • Page 95 CX-BK2 MAIN MODE MOTOR RIGHT BUTTON (1) RIGHT BUTTON (2) ROLLER MOTOR SENSOR SPEAKER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > R931 1-216-809-11 METAL CHIP 1/10W R932 1-216-809-11 METAL CHIP 1/10W * CN010 1-564-321-21 PIN, CONNECTOR (3.96mm PITCH) 2P...
  • Page 96 CX-BK2 SPEAKER STOCKER SW (1) SW (2) SW (3) SW (4) USB AUX Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < COIL > C711 1-162-919-11 CERAMIC CHIP 22PF L501 1-420-872-52 COIL, AIR-CORE C712 1-125-891-11 CERAMIC CHIP 0.47uF...
  • Page 97 CX-BK2 USB AUX Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q701 8-729-106-60 TRANSISTOR 2SB1132-T101-R MISCELLANEOUS Q702 8-729-027-23 TRANSISTOR DTA114EKA-T146 ************** < RESISTOR > 1-773-115-11 WIRE (FLAT TYPE) (19 CORE) 1-773-156-11 WIRE (FLAT TYPE) (21 CORE)

  • Page 98: Revision History

    CX-BK2 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2003.06...

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