Pioneer CDX-P2050VC Service Manual
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Pioneer CDX-P2050VC Service Manual

Pioneer CDX-P2050VC Service Manual

Voice control multi-cd player
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3 7 63 1515 0
Service
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
TE
L 13942296513
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
www
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
http://www.xiaoyu163.com
x
ao
u163
y
i
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
http://www.xiaoyu163.com
2 9
8
CDX-P2050VC/X1N/UC
X1N/EW
X1N/EW
Q Q
3
6 7
1 3
1 5
7. GENERAL INFORMATION .......................................45
7.1 DIAGNOSIS ........................................................45
7.1.1 TEST MODE ..............................................45
7.1.2 DISASSEMBLY .........................................54
7.2 IC .........................................................................56
co
8. OPERATIONS AND SPECIFICATIONS.....................65
.
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
9 4
2 8
ORDER NO.
CRT2388
X1N/UC
0 5
8
2 9
9 4
2 8
m
K-ZZY. MAY 1999 Printed in Japan
9 9
9 9

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  • Page 1: Table Of Contents

    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 http://www.xiaoyu163.com...

  • Page 2: Manual

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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,...

  • Page 3: Safety Information

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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 3 7 63 1515 0 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 5 CDX-P2050VC,P2050VN,P2050VS NOTE: 3 7 63 1515 0 - 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.
  • Page 6 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 2.2 EXTERIOR L 13942296513 u163 http://www.xiaoyu163.com...
  • 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 3 7 63 1515 0 2.3 CD MECHANISM MODULE L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 9: Cdx-P2050Vc,P2050Vn,P2050Vs 2

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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)
  • Page 10 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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...
  • Page 11 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 2.4 MAGAZINE ASSY L 13942296513 - MAGAZINE ASSY SECTION PARTS LIST Mark No. Description Part No. u163 1 Magazine Assy CXB4028 2 Tray CNV5341 3 Label CRW1396 http://www.xiaoyu163.com...

  • Page 12: Block Diagram And Schematic Diagram

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM MECHANISM CD CORE UNIT PICKUP UNIT (SERVICE) SWITCH PCB L 13942296513 MOTOR PCB u163 http://www.xiaoyu163.com...
  • Page 13 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 POWER UNIT CN303 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 14 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 VOICE UNIT L 13942296513 PCB ASSY u163 http://www.xiaoyu163.com...
  • Page 15 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 L 13942296513 CN922 u163 http://www.xiaoyu163.com...
  • Page 16 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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 L 13942296513...
  • Page 17 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 CD CORE UNIT O,DSP,DAC L 13942296513 u163 RIVER A1/2 http://www.xiaoyu163.com...
  • Page 18 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 PD5512B SYSTEM CONTROLLER L 13942296513 u163 A2/2 http://www.xiaoyu163.com...
  • Page 19 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 SRAM L 13942296513 R769(1/8W)R768(1/8W) IP-BUS DRIVER u163 A2/2 http://www.xiaoyu163.com...
  • Page 20 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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...
  • Page 21 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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) →...
  • Page 22 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 ( CH1: R OUT 6 CH1: FE 8 CH1: TE 2V/div. 0.2V/div. 0.2V/div. 500µs/div. 1ms/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)
  • Page 23 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 3.3 POWER UNIT L 13942296513 HZS4LL(C) u163 http://www.xiaoyu163.com...
  • Page 24 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 3.4 VOICE UNIT, PCB ASSY VOICE UNIT L 13942296513 PD6304B(VC,VN) PD6305B(VS) u163 SYSTEM BLOCK http://www.xiaoyu163.com...
  • Page 25 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 AUDIO BLOCK SP AMP CN901 PCB ASSY L 13942296513 POWER SUPPLY BLOCK CN922 u163 http://www.xiaoyu163.com...

  • Page 26: Pcb Connection Diagram

    CDX-P2050VC,P2050VN,P2050VS 4. PCB CONNECTION DIAGRAM 3 7 63 1515 0 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...
  • Page 27 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 SIDE B L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 28 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 4.2 POWER UNIT SIDE A POWER UNIT CN701 L 13942296513 CN303 u163 CORD IP-BUS http://www.xiaoyu163.com...
  • Page 29 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 SIDE B POWER UNIT L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 30 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 4.3 MECHANISM PCB MECHANISM PCB PICKUP UNIT M851 (SERVICE) SPDL HOME M854 CN101 L 13942296513 4.4 SWITCH PCB SWITCH PCB D851 u163 http://www.xiaoyu163.com...
  • Page 31 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 4.5 MOTOR PCB MOTOR PCB 4.6 PCB ASSY L 13942296513 PCB ASSY CALL 2 3 4 u163 CN901 http://www.xiaoyu163.com...
  • Page 32 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 4.7 VOICE UNIT SIDE A L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 33 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 SIDE B L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 34: Electrical Parts List

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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..
  • Page 35 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 =====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...
  • Page 36 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 =====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...
  • Page 37 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 =====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...
  • Page 38 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 =====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)

  • Page 39: Adjustment

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 40 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 Grating waveform Echt Xch 20mV/div, AC Fcht Ych 20mV/div, AC 0˚ 30˚ 45˚ 60˚ L 13942296513 75˚ 90˚ u163 http://www.xiaoyu163.com...
  • Page 41 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 42 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 43 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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...
  • Page 44 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 Stopper bend of the clamp lever Frame stopper L 13942296513 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.

  • Page 45: General Information

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 46 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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...
  • Page 47 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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 3 7 63 1515 0 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.
  • Page 49 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 50 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 51 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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).
  • Page 52 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 Step 5: Check whether the registered words are recognizable. (Make sure that 4 words are already registered in step 4 above.) 1 Press the CALL key for 2 seconds maximum. 2 The guidance “Make a request ...Puu” will be output.
  • Page 53 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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´...

  • Page 54: Disassembly

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 55 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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.
  • Page 56 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 7.2 IC AK2316 VOICE MUTE VREF AVSS2 AVDD2 8BSEL MODE TMODE trst DVSS DVDD VCOM Voltage Host I/F JTAG Reference AVDD1 AVSS1 14bit STATREQ VOICEIN 12kHz VOOUT reset AINL (ARM7TDMI) 14bit AINR 8kHz...
  • Page 57 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 58 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - Pin Functions (PE5041A) Pin No. Pin Name Format Function and Operation Service testmode input svtest 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...
  • Page 59 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 *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.
  • Page 60 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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...
  • Page 61 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 BA05FP *UPD63710GC Reference voltage BA5986FM Mute L 13942296513 Level shift Level shift Level shift Level shift Stand-by u163 http://www.xiaoyu163.com...
  • Page 62 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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...
  • Page 63 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 - 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...
  • Page 64 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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)

  • Page 65: Operations And Specifications

    CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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.
  • Page 66 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 Connecting the Units L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 67 CDX-P2050VC,P2050VN,P2050VS 3 7 63 1515 0 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 ....

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