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Pioneer CDX-P2050VC/X1N/UC Service Manual
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Pioneer CDX-P2050VC/X1N/UC Service Manual

Pioneer CDX-P2050VC/X1N/UC Service Manual

Voice control multi-cd player
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Service
Manual
VOICE CONTROL MULTI-CD PLAYER
CDX-P2050VC
CDX-P2050VN
CDX-P2050VS
- See the separate manual CX-938(CRT2357) for the CD mechanism description, disassembly and circuit
description.
- The CD mechanism employed in this model is one of C8 series.
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
4. PCB CONNECTION DIAGRAM ................................26
5. ELECTRICAL PARTS LIST ........................................34
6. ADJUSTMENT..........................................................39
PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER ELECTRONIC [EUROPE] N.V.
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1999
CDX-P2050VC/X1N/UC
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
X1N/EW
X1N/EW
7. GENERAL INFORMATION .......................................45
7.1 DIAGNOSIS ........................................................45
7.1.1 TEST MODE ..............................................45
7.1.2 DISASSEMBLY .........................................54
7.2 IC .........................................................................56
8. OPERATIONS AND SPECIFICATIONS.....................65
K-ZZY. MAY 1999 Printed in Japan
ORDER NO.
CRT2388
X1N/UC

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  • Page 1: Table Of Contents

    PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER ELECTRONIC CORPORATION 1999 K-ZZY. MAY 1999 Printed in Japan...
  • Page 2 CDX-P2050VC,P2050VN,P2050VS - CD Player Service Precautions 3. Please checking the grating after changing the pickup 1. For pickup unit(CXX1285) handling, please refer unit(see page 39) since these screws protects the to"Disassembly"(See page 54). During replacement, mechanism during transport, be sure to affix it when handling precautions shall be taken to prevent an it is transported for repair, etc.

  • Page 3: Safety Information

    CDX-P2050VC,P2050VN,P2050VS 1. SAFETY INFORMATION 1.1 CDX-P2050VC/X1N/UC CAUTION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.

  • Page 4: Exploded Views And Parts List

    CDX-P2050VC,P2050VN,P2050VS 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING...
  • Page 5 - Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List. ∇ mark on the product are used for disassembly. - Screws adjacent to - PACKING SECTION PARTS LIST Part No. Mark No. Description CDX-P2050VC/X1N/UC CDX-P2050VN/X1N/EW CDX-P2050VS/X1N/EW 1 Screw Assy CEA1962 CEA1962...
  • Page 6 CDX-P2050VC,P2050VN,P2050VS 2.2 EXTERIOR...
  • Page 7 CNC8141 58 Cushion TED1366 29 Lever See Contrast table(2) 30 Connector(CN922) CKS3599 (2) CONTRAST TABLE CDX-P2050VC/X1N/UC, CDX-P2050VN/X1N/EW and CDX-P2050VS/X1N/EW are constructed the same except for the following: Part No. Mark No. Symbol and Description CDX-P2050VC/X1N/UC CDX-P2050VN/X1N/EW CDX-P2050VS/X1N/EW 8 Cord CDE5831...
  • Page 8 CDX-P2050VC,P2050VN,P2050VS 2.3 CD MECHANISM MODULE...
  • Page 9 CDX-P2050VC,P2050VN,P2050VS - CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Connector CDE6069 46 Plate CNC8375 2 CD Core Unit(C8) CWX2277 47 Cover CNC8434 3 Connector(CN701) CKS1953 48 Sheet CNM6009 4 Connector(CN101) CKS2272 49 Spacer CNM6146...
  • Page 10 CDX-P2050VC,P2050VN,P2050VS Mark No. Description Part No. 91 Screw JFZ20P025FMC 92 Lever Unit CXB3938 93 ••••• 94 Gear Unit CXB4338 95 Screw JGZ17P025FZK 96 Pickup Unit(Service) CXX1285 97 ••••• 98 ••••• 99 Screw IMS26P040FMC 100 Screw JFZ20P025FNI 101 Photo-transistor(Q851) PT4800 CSN1051 Spring Switch(S851,S853) 103 LED(D851) CN504-2...
  • Page 11 CDX-P2050VC,P2050VN,P2050VS 2.4 MAGAZINE ASSY - MAGAZINE ASSY SECTION PARTS LIST Mark No. Description Part No. 1 Magazine Assy CXB4028 2 Tray CNV5341 3 Label CRW1396...

  • Page 12: Block Diagram And Schematic Diagram

    CDX-P2050VC,P2050VN,P2050VS 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM MECHANISM CD CORE UNIT PICKUP UNIT (SERVICE) SWITCH PCB MOTOR PCB...
  • Page 13 CDX-P2050VC,P2050VN,P2050VS POWER UNIT CN303...
  • Page 14 CDX-P2050VC,P2050VN,P2050VS VOICE UNIT PCB ASSY...
  • Page 15 CDX-P2050VC,P2050VN,P2050VS CN922...
  • Page 16 CDX-P2050VC,P2050VN,P2050VS 3.2 OVERALL CONNECTION DIAGRAM Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. MECHANISM PICKUP UNIT(SERVICE) CXX1285 RF-AMP,SERVO,DSP M854 CXB3004 M851 CXB3003 SWITCH PCB M853 CXB4421 MOTOR PCB M852 CXB3006 4CH SERVO DRIVER MOTOR DRIVER...
  • Page 17 CDX-P2050VC,P2050VN,P2050VS CD CORE UNIT O,DSP,DAC RIVER A1/2...
  • Page 18 CDX-P2050VC,P2050VN,P2050VS PD5512B SYSTEM CONTROLLER A2/2...
  • Page 19 CDX-P2050VC,P2050VN,P2050VS SRAM R769(1/8W)R768(1/8W) IP-BUS DRIVER A2/2...
  • Page 20 CDX-P2050VC,P2050VN,P2050VS Note:1. The encircled numbers denote measuring pointes in the circuit diagram. 2. Reference voltage REFO:2.5V - Waveforms 1 RFI 1 CH1: RFI 1 CH1: RFI 0.5V/div. 0.5µs/div. 1V/div. 1V/div. 0.5ms/div. 0.5ms/div. 2 CH2: MIRR 2 CH2: MIRR Normal mode: play 5V/div.
  • Page 21 CDX-P2050VC,P2050VN,P2050VS 8 CH1: TE 8 CH1: TE 0 MD 0.2V/div. 0.5V/div. 0.5V/div. 0.1s/div. 20ms/div. 5ms/div. 9 CH2: TD ! CH2: SD 0.2V/div. 0.5V/div. Normal mode: play TEST mode:100Tracks jump(FWD) Normal mode: Play (12cm) → REFO → REFO → REFO → →...
  • Page 22 CDX-P2050VC,P2050VN,P2050VS ( CH1: R OUT 6 CH1: FE 8 CH1: TE 2V/div. 0.2V/div. 0.2V/div. 1ms/div. 500µs/div. 1ms/div. ) CH2: L OUT 3 CH2: FD 9 CH2: TD 2V/div. 0.5V/div. 0.5V/div. Normal mode: Play (1kHz 0dB) Normal mode: During AGC Normal mode: During AGC →...
  • Page 23 CDX-P2050VC,P2050VN,P2050VS 3.3 POWER UNIT HZS4LL(C)
  • Page 24 CDX-P2050VC,P2050VN,P2050VS 3.4 VOICE UNIT, PCB ASSY VOICE UNIT PD6304B(VC,VN) PD6305B(VS) SYSTEM BLOCK...
  • Page 25 CDX-P2050VC,P2050VN,P2050VS AUDIO BLOCK SP AMP CN901 PCB ASSY POWER SUPPLY BLOCK CN922...

  • Page 26: Pcb Connection Diagram

    CDX-P2050VC,P2050VN,P2050VS 4. PCB CONNECTION DIAGRAM SIDE A 4.1 CD CORE UNIT M852 NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic dia- gram.
  • Page 27 CDX-P2050VC,P2050VN,P2050VS SIDE B...
  • Page 28 CDX-P2050VC,P2050VN,P2050VS 4.2 POWER UNIT SIDE A POWER UNIT CN701 CN303 CORD IP-BUS...
  • Page 29 CDX-P2050VC,P2050VN,P2050VS SIDE B POWER UNIT...
  • Page 30 CDX-P2050VC,P2050VN,P2050VS 4.3 MECHANISM PCB MECHANISM PCB PICKUP UNIT M851 (SERVICE) SPDL HOME M854 CN101 4.4 SWITCH PCB SWITCH PCB D851...
  • Page 31 CDX-P2050VC,P2050VN,P2050VS 4.5 MOTOR PCB MOTOR PCB 4.6 PCB ASSY PCB ASSY CALL 2 3 4 CN901...
  • Page 32 CDX-P2050VC,P2050VN,P2050VS 4.7 VOICE UNIT SIDE A...
  • Page 33 CDX-P2050VC,P2050VN,P2050VS SIDE B...

  • Page 34: Electrical Parts List

    CDX-P2050VC,P2050VN,P2050VS 5. ELECTRICAL PARTS LIST NOTE: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..=====Circuit Symbol and No.===Part Name Part No.
  • Page 35 CDX-P2050VC,P2050VN,P2050VS =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S104J CKSRYB104K16 RS1/16S223J CCSRCH102J50 RS1/16S104J CCSRCH102J50 RS1/16S472J CKSRYB103K25 RS1/16S104J CKSQYB473K16 RA4C473J CKSQYB473K16 RA4C473J CKSRYB103K25 RN1/16SE3602D CKSQYB104K25 RN1/16SE6801D CKSRYB103K25 RS1/16S221J CKSRYB102K50 RS1/16S104J CKSRYB102K50...
  • Page 36 CDX-P2050VC,P2050VN,P2050VS =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S101J Diode HZS6L(C2) Diode 1SS356 CAPACITORS Diode 1SS356 Diode 1SS356 CKSQYB104K50 Ferri-Inductor LAU101K 470µF/16V CCH1183 CKSQYB223K25 Inductor LCTBR47K2125 470µF/16V CCH1183 Inductor LCTBR47K2125...
  • Page 37 CDX-P2050VC,P2050VN,P2050VS =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S681J CEJA100M16 RS1/10S0R0J CKSQYB105K16 RS1/10S102J CEJA100M16 RS1/10S302J CKSRYB103K50 RS1/10S102J CKSYB684K16 RS1/10S682J CCSRCH150J50 RS1/10S392J CCSRCH150J50 RS1/10S104J CKSRYB103K50 RS1/10S103J CKSQYB105K16 RS1/10S271J CEJA220M16 RS1/10S332J CEJA220M16...
  • Page 38 CDX-P2050VC,P2050VN,P2050VS =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- Unit Number : Unit Name : Mechanism PCB Photo-transistor PT4800 Spring Switch(HOME) CSN1051 Unit Number : Unit Name : Switch PCB CN504-2 Spring Switch(DSP) CSN1051 Spring Switch(TAP) CSN1052 Unit Number : Unit Name : Motor PCB Motor(TRAY)

  • Page 39: Adjustment

    CDX-P2050VC,P2050VN,P2050VS 6. ADJUSTMENT 6.1 CHECKING THE GRATING - Checking the Grating After Changing the Pickup Unit • Note : CD mechanism modules the grating angle of the pickup unit cannot be adjusted after the pickup unit is changed. The pickup unit in the CD mechanism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted pickup unit for the CD mechanism module.
  • Page 40 CDX-P2050VC,P2050VN,P2050VS Grating waveform Echt Xch 20mV/div, AC Fcht Ych 20mV/div, AC 0˚ 30˚ 45˚ 60˚ 75˚ 90˚...
  • Page 41 CDX-P2050VC,P2050VN,P2050VS 6.2 ADJUSTMENT OF ELEVATION WHEN THE CD CORE UNIT HAS BEEN REMOVED FOR MAINTENANCE - Adjustment When Error Code 60 is Displayed Because of Malfunctioning Elevation • Note : This mechanisms is detects the height of the stage using slide-variable resistance. To absorb dislocation of the stage height caused by differences in the mechanism and the CD core unit, adjustment must be made for each CD-mechanism module using a variable resistor.
  • Page 42 CDX-P2050VC,P2050VN,P2050VS Examples of display 4. Press key 9 to set ELV/TRAY mode to TRAY. TRACK FUNCTION 01' 02" 5. Press key FF to release the clamp and return the tray to the magazine. Release the clamp 6. Press key 9 to enter Elevation Move mode. TRACK FUNCTION 00' 02"...
  • Page 43 CDX-P2050VC,P2050VN,P2050VS 12. To see the amount of dislocation, place the mechanism upside-down. If the stopper bend has been dislocated in the direction of the first VR802 CD, turn VR802 to the left(Fig. 2). EREF To lower the stage toward the twelfth step by 0.1 mm, reduce the voltage of EREF (adjusted in step 8) by 10 mV.
  • Page 44 CDX-P2050VC,P2050VN,P2050VS Stopper bend of the clamp lever Frame stopper Dislocated toward the first CD. Fig. 2 Adjust the insertion gate of magazine to the sixth scale. Fig. 1 Engaged in the center and pressed downward. Fig. 3 Dislocated toward the twelfth CD. Fig.

  • Page 45: General Information

    CDX-P2050VC,P2050VN,P2050VS 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 TEST MODE - CD Test Mode 1) Precautions 2) Test Mode • This unit uses a single power supply (+5V) for the reg- This mode is used for adjusting the CD mechanism ulator. The signal reference potential, therefore, is module of the device.
  • Page 46 CDX-P2050VC,P2050VN,P2050VS - Flow Chart Test Mode In Reset SOURCE Sourse CD New test mode BAND Power ON (Adjustment for T.Offset) Power ON RF AMP Gain Select (Not adjustment for T.Offset) 00 00 00 Display 99 99 99 GG GG GG Display Power OFF TRK+...
  • Page 47 CDX-P2050VC,P2050VN,P2050VS - Error Messages If a CD is not operative or stopped during operation due to an error, the error mode is turned on and cause(s) of the error is indicated with a corresponding number. This arrangement is intended at reducing nonsense calls from the users and also for facilitating trouble analysis and repair work in servicing.
  • Page 48 CDX-P2050VC,P2050VN,P2050VS Code Class Displayed error code Description of the code and potential cause(s) Mecha- An error upon Elevation time has time out. nism elevation Mecha- An error with an em- No disc is available. nism pty magazine inserted Remarks: Unreadable TOC does not constitute an error. An intended operation continues in this case. A newly designed head unit must conform to the example given above.
  • Page 49 CDX-P2050VC,P2050VN,P2050VS Mechanism Test Mode (Example) BAND Back to the test mode Playing the mechanism DOWN Playing the mechanism Mechanism test mode in – TRAY/ELV select – – Operation step select Note: Eject and CD on/off is performed in the same procedure as that for the normal mode. (3) Cause of Error and Error Code Code Class Contents...
  • Page 50 CDX-P2050VC,P2050VN,P2050VS Status No. Contents Protective action Focus search preprocessing is in None progress while focus recovery is turned on. Wait time after focus close is set up. Off focus. Standing by after focus close is over. Off focus. Setup (1/2) before T balance adjustment is started. Off focus.
  • Page 51 CDX-P2050VC,P2050VN,P2050VS - VOICE UNIT Test Mode Step 1: Turning on the test mode 1 Connect Pin 1 on the microcomputer to the ground, supply power, then press the reset switch. 2 At this time, the automatic self-check is implemented by the voice recognition LSI (AK2316). When normal: The “Test mode”...
  • Page 52 4 The guidance “Test mode” will be output. Now, you can proceed to step 2. List of Guidance by Destination Guidance contents Order No. CDX-P2050VS/X1N/EW CDX-P2050VC/X1N/UC,P2050VN/X1N/EW Make a request Make a request Say name to be registered Say name to be registered Naming is complete...
  • Page 53 CDX-P2050VC,P2050VN,P2050VS Guidance contents Order No. CDX-2050VS/X1N/EW CDX-P2050VC/X1N/UC,P2050VN/X1N/EW Ricevuto Vielen Dank Ripetere il nome, prego Bitte erneut eingeben Ripetere la richiesta, prego Bitte erneut aufrufen Registrare il nome della sorgente Bitte Namen der Tonquelle eingeben Registrare il nome del mode dell´ equalizzatore...

  • Page 54: Disassembly

    CDX-P2050VC,P2050VN,P2050VS 7.1.2 DISASSEMBLY Voice Unit Removing the Voice Unit (Fig.5) 1. Remove the six screws. (not shown) 2. Remove the the case. (not shown) Disconnect the connector. Remove the four claws and remove the Voice Unit. Fig.5 CD Mechanism Module Removing the Upper Case (not shown) 1.
  • Page 55 CDX-P2050VC,P2050VN,P2050VS - Removing the Pickup Unit 1. Insert a short pin into the pickup flexible PCB. 2. Remove the pickup flexible PCB from the connector. 3. Remove the flexible card from the connector. 4. Remove the lead wires of the spindle motor assy and carriage motor assy by removing solder. 5.
  • Page 56 CDX-P2050VC,P2050VN,P2050VS 7.2 IC AK2316 VOICE MUTE AVSS2 AVDD2 DVDD VREF 8BSEL MODE TMODE trst DVSS VCOM Voltage Host I/F JTAG Reference AVDD1 AVSS1 14bit STATREQ VOICEIN 12kHz VOOUT reset AINL (ARM7TDMI) 14bit AINR 8kHz Control MIXOUT Thumb RAM (32kbit) AUDINR DVSS Mixer 14bit...
  • Page 57 CDX-P2050VC,P2050VN,P2050VS PD6304B,PD6305B 48 A16 47 BYTE 46 V 4,194,304 45 DQ15/A-1 CELL DECODER ADDRESS MATRIX LATCH 44 DQ7 YGATE LOW VCC DECODER 43 DQ14 DETECT CIRCUIT 42 DQ6 41 DQ13 DATA LATCH N.C. 40 DQ5 N.C. 39 DQ12 CONTROL 38 DQ4 CIRCUIT (COMMAND RESET...
  • Page 58 CDX-P2050VC,P2050VN,P2050VS - Pin Functions (PE5041A) Pin No. Pin Name Format Function and Operation svtest Service testmode input Not used VCPPW Power supply for AK2316,ROM AVSS A/D converter ground potential Not used IPPW Power supply control output for IP BUS interface IC AVREF1 (Connect to VDD) GLEV0...
  • Page 59 CDX-P2050VC,P2050VN,P2050VS *PE5041A Format Meaning C MOS IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. - Pin Functions (UPD63710GC) Pin No. Pin Name Function and Operation Logic circuit GND HOLD Defect detection output MIRR...
  • Page 60 CDX-P2050VC,P2050VN,P2050VS Pin No. Pin Name Function and Operation Positive power supply terminal to logic circuit LOCK EFM synchronous detection signal RFCK Frame synchronous signal of XTAL-system WFCK Frame synchronous signal of PLL-system PLCK Monitor pin of bit clock Logic circuit GND C1D1 Output pin for indicating the C1 error correction results C1D2...
  • Page 61 CDX-P2050VC,P2050VN,P2050VS *UPD63710GC BA05FP Reference voltage BA5986FM Mute Level shift Level shift Level shift Level shift Stand-by...
  • Page 62 CDX-P2050VC,P2050VN,P2050VS PD0236AM LRCKI VDD XRST BCKI DATAI Data Delay Data Input Timing Generator Data Distinction Block Operation Block Distinction Data Delay Block Cofficient Storage ROM Data Output LRSEL LRCKO NC BCKO DATAO GND BCSEL DASEL PE8001A1 VCC2L AGND2L EXTL ML/IIS MC/DM1 MD/DM0 mute MODE zero VOUTL...
  • Page 63 CDX-P2050VC,P2050VN,P2050VS - Pin Functions (PD5512B) Pin No. Pin Name Format Function and Operation DACRST DAC reset output Not used adena A/D reference voltage output TXTSTE TEXT parameter output TXTSO TEXT control parameter serial output TXTSI TEXT data serial input TXTSCK TEXT clock output BYTE VCC joint...
  • Page 64 CDX-P2050VC,P2050VN,P2050VS Pin No. Pin Name Format Function and Operation SRAM address bus output 65–68 A6-A3 SRAM address bus output SRAM address bus output A2 and (EPSK) O SRAM address bus output and (E2PROM clock output) A1 and (EPDI) SRAM address bus output and (E2PROM data input) A0 and (EPDO) O SRAM address bus output and (E2PROM data output) Not used...

  • Page 65: Operations And Specifications

    CDX-P2050VC,P2050VN,P2050VS 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATION Resetting the Microprocessor The microprocessor must be reset under the following conditions: When using this product for the first time after installation. When the machine fails to operate properly. • To reset the microprocessor, press the Reset button on this product with a pen tip or other pointed instrument.
  • Page 66 CDX-P2050VC,P2050VN,P2050VS Connecting the Units...
  • Page 67 CDX-P2050VC,P2050VN,P2050VS 8.2 SPECIFICATIONS General Audio System ........Compact disc audio system Frequency characteristics .... 5 — 20,000 Hz (±1 dB) Usable discs ..........Compact Disc Signal-to-noise ratio ..100 dB (1 kHz) (IEC-A Network) Signal format ....Sampling frequency: 44.1 kHz Distortion ..............

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