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Pioneer CDX-P1270 Service Repair Training

Multi-compact disc player
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Service
Manual
MULTI-COMPACT DISC PLAYER
CDX-P1270
CDX-P1270
CDX-P1270
- This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-938
CRT2357
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
4. PCB CONNECTION DIAGRAM ................................22
5. ELECTRICAL PARTS LIST ........................................28
6. ADJUSTMENT..........................................................31
PIONEER CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER EUROPE NV
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2000
CDX-P1270/X1N/UC
X1N/EW
X1N/ES
Mech. Module
Remarks
C8
CD Mech. Module:Circuit Description, Mech. Description, Disassembly
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
7. GENERAL INFORMATION .......................................40
7.1 DIAGNOSIS ........................................................40
7.1.1 TEST MODE ..............................................40
7.1.2 DISASSEMBLY .........................................44
7.2 IC .........................................................................47
7.3 OPERATIONAL FLOW CHART ...........................49
8. OPERATIONS AND SPECIFICATIONS.....................50
K-ZZY. DEC. 2000 Printed in Japan
ORDER NO.
CRT2591
X1N/UC

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  Summary of Contents for Pioneer CDX-P1270

  • Page 1: Table Of Contents

    PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER CORPORATION 2000 K-ZZY. DEC. 2000 Printed in Japan...
  • Page 2 CDX-P1270 - CD Player Service Precautions 2. During disassembly, be sure to turn the power off since an internal IC might be destroyed when a con- 1. For pickup unit(CXX1285) handling, please refer nector is plugged or unplugged. to"Disassembly"(see page 44).
  • Page 3: Safety Information

    CDX-P1270 1. SAFETY INFORMATION - CDX-P1270/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-P1270 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING...
  • Page 5 CDX-P1270 NOTE: - 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...
  • Page 6 CDX-P1270 2.2 EXTERIOR...
  • Page 7 26 Screw IMS20P030FZK 27 Screw IMS26P040FMC 28 Transistor(Q910) 2SD2396 29 Caution Card CRP1233 (2) CONTRAST TABLE CDX-P1270/X1N/UC, CDX-P1270/X1N/EW and CDX-P1270/X1N/ES are constructed the same except for the following: Part No. Mark No. Symbol and Description CDX-P1270/X1N/UC CDX-P1270/X1N/EW CDX-P1270/X1N/ES 22 Door CAT2203...
  • Page 8 CDX-P1270 2.3 CD MECHANISM MODULE...
  • Page 9 CDX-P1270 - 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 CWX2489 47 Cover CNC8434 3 Connector(CN701) CKS1963 48 Sheet CNM6009 4 Connector(CN101)
  • Page 10 CDX-P1270 Mark No. Description Part No. 91 Screw JFZ20P025FMC 92 Lever Unit CXB3938 93 ••••• 94 Gear Unit CXB5061 95 Screw JGZ17P025FZK 96 Pickup Unit(Service) CXX1285 97 ••••• 98 ••••• 99 Screw IMS26P040FMC 100 Screw JFZ20P025FNI 101 Photo-transistor(Q851) PT4800 CSN1051...
  • Page 11 CDX-P1270 2.4 MAGAZINE ASSY - MAGAZINE ASSY SECTION PARTS LIST Mark No. Description Part No. 1 Magazine Assy(UC,ES) CXB4028 Magazine Assy(EW) CXB6519 2 Tray CNV5341 3 Label(UC,ES) CRW1419 Label(EW) CRW1416...
  • Page 12: Block Diagram And Schematic Diagram

    CDX-P1270 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM MECHANISM CD CORE UNIT PICKUP UNIT (SERVICE) (P8) CN101 L_OUT MONITOR DIODE RF AMP, SERVO, DSP, DAC AC/F/E/BD HOLOGRAM IC 201 UNIT UPD63711GC LIMIT CDMUTE xtal Q101 X202 16.93MHz LD(–)
  • Page 13 CDX-P1270 POWER UNIT CN921 CN701 CN911 LOUT LOUT IP-BUS OUT Q941 Q942 CDMUTE CDMUTE CDMUTE IP-BUS DRIVER BUSP BUSP IC 703 IPIN BUSM BUSM HA12187FP IPOUT ASENB IPPW BATT BSENIN BSENIN bsens IC 704 ASENB ASNB asens PAJ002A reset Q770...
  • Page 14: Cd Mechanism Module

    CDX-P1270 3.2 CD MECHANISM MODULE 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, SE M854 CXB3004 M851 CXB3003 SWITCH PCB CSN1051 CN504-2 PT4800...
  • Page 15 CDX-P1270 NOTE : Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values discrete resistors. are expressed as : ← Symbol indicates a capacitor. ← No differentiation is made between chip capacitors and 0.022...
  • Page 16 CDX-P1270 SYSTEM CONTROLLER...
  • Page 17 CDX-P1270 SRAM IP-BUS DRIVER...
  • Page 18 CDX-P1270 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 19 CDX-P1270 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 20 CDX-P1270 ( 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) Normal mode: During AGC Normal mode: During AGC →...
  • Page 21 CDX-P1270 3.3 POWER UNIT...
  • Page 22: Pcb Connection Diagram

    CDX-P1270 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 23 CDX-P1270 SIDE B...
  • Page 24 CDX-P1270 4.2 POWER UNIT SIDE A POWER UNIT CN701 IP-BUS CORD...
  • Page 25 CDX-P1270 SIDE B POWER UNIT...
  • Page 26 CDX-P1270 4.3 MECHANISM PCB MECHANISM PCB PICKUP UNIT M851 (SERVICE) SPDL HOME M854 CN101 4.4 SWITCH PCB SWITCH PCB D851...
  • Page 27 CDX-P1270 4.5 MOTOR PCB MOTOR PCB...
  • Page 28: Electrical Parts List

    CDX-P1270 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 29 CDX-P1270 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S221J Unit Number : CWX2513 RS1/10S271J Unit Name : Power Unit RS1/16S512J RS1/16S432J MISCELLANEOUS RS1/16S102J Transistor 2SD2396 CAPACITORS Transistor...
  • Page 30 CDX-P1270 =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- Unit Number : Unit Name : Motor PCB Motor Unit(TRAY) CXB4421 Miscellaneous Parts List Pickup Unit(P8)(Service) CXX1285 Motor Unit(SPINDLE) CXB3003 Motor Unit(ELV) CXB3006 Motor Unit(CARRIAGE) CXB3004 Volume 10kΩ(B) CCW1024...
  • Page 31: Adjustment

    CDX-P1270 6. ADJUSTMENT 6.1 CD ADJUSTMENT - Precautions • Disc detection during tray extraction and return oper- • This unit uses a single power supply (+5V) for the reg- ations is performed by means of the photo transistor ulator. The signal reference potential, therefore, is in this unit.
  • Page 32 CDX-P1270 - CD Test mode • The following head units are exceptional so that their This mode is used for adjusting the CD mechanism entering ways to the test mode are different from oth- module of the device. ers. Test mode starting procedure •...
  • Page 33 CDX-P1270 - 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...
  • Page 34 CDX-P1270 6.2 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 35 CDX-P1270 Grating waveform Echt Xch 20mV/div, AC Fcht Ych 20mV/div, AC 0˚ 30˚ 45˚ 60˚ 75˚ 90˚...
  • Page 36 CDX-P1270 6.3 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 37 CDX-P1270 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.
  • Page 38 CDX-P1270 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 39 CDX-P1270 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.
  • Page 40: General Information

    CDX-P1270 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 TEST MODE - 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 41 CDX-P1270 Code Class Displayed error code Description of the code and potential cause(s) Mecha- An error upon MAG switch release time has time out. nism ejection Elevation time out when eject. Mecha- An error while putti- Tray in / out time has time out.
  • Page 42 CDX-P1270 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 43 CDX-P1270 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.
  • Page 44: Disassembly

    CDX-P1270 7.1.2 DISASSEMBLY Removing the Upper Case (not shown) 1. Remove the nine screws. 2. Remove the Upper Case. CD Mechanism Module Removing the CD Mechanism Module (Fig.5) Remove the four dampers. Remove the two springs. Disconnect the connector and then remove the CD Mechanism Module.
  • Page 45 CDX-P1270 Door(A) 2. The slide is done in the direction of arrow5 and remove the Door(B) while spread out the Door(A) in the Door(B) direction of arrow4. (Fig.8) *) The illustration of the text for 12-Disc type but disas- sembling method is the same for 6-Disc type.
  • Page 46: Connector Function Description46

    CDX-P1270 7.1.3 CONNECTOR FUNCTION DESCRIPTION IP-BUS POWER SUPPLY 8 9 10 11 1 2 3 4 1.GND 7.LCH 1.BUS+ 2.ACC 8.ASENB 2.GND 3.BATT 9.RCH 3.GND 4.NC 10.SGNDR 11.SGNDL 5.BUS- 6.GND...
  • Page 47 CDX-P1270 7.2. IC - Pin Functions (PD5638A) Pin No. Pin Name Format Function and Operation Not used adena A/D reference voltage output TXTSTB TEXT parameter output TXTSO TEXT control parameter serial output TXTSI TEXT data serial input TXTSCK TEXT clock output...
  • Page 48 CDX-P1270 Pin No. Pin Name Format Function and Operation 65–68 A6-A3 SRAM address bus output SRAM address bus output A2 & (EPSK) SRAM address bus output and (E2PROM clock output) A1 & (EPDI) SRAM address bus output and (E2PROM data input) A0 &...
  • Page 49: Operational Flow Chart

    CDX-P1270 7.3 OPERATIONAL FLOW CHART BATT ON VDD=5V Pin16 bsens Pin18 bsens=L POWER←H Pin10 adena←L Pin3 VD IN Error message "A0" Pin96 1.3V VD IN 2.1V POWER←L Pin75 Stand-by mag=L DISC Search POWER←L Pin10 asens Pin19 asens=L Source=Multi-CD POWER←H Pin10 adena←L Pin3...
  • Page 50: Operations And Specifications

    CDX-P1270 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS Connecting the Units IP-BUS cable To prevent incorrect connection, the input side of the IP-BUS connector is colored in blue, and the output side in black. Connect the connectors of the same colors correctly.