Pioneer YPM-2306ZF Service Manual
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Pioneer YPM-2306ZF Service Manual

Pioneer YPM-2306ZF Service Manual

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Service
Manual
CD PLAYER
YPM-2306
- The CD mechanism employed in this model is one of S8.1 series.
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................3
4. PCB CONNECTION DIAGRAM ................................11
5. ELECTRICAL PARTS LIST ........................................14
6. ADJUSTMENT..........................................................16
PIONEER CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER EUROPE N.V.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2000
FORD
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
ZF
7. GENERAL INFORMATION .......................................20
7.1 DIAGNOSIS ........................................................20
7.1.1 TEST MODE ..............................................20
7.1.2 DISASSEMBLY .........................................24
7.2 IC ........................................................................27
7.3 EXPLANATION ...................................................29
7.3.1 CIRCUIT DESCRIPTIONS .........................29
7.3.2 MECHANISM DESCRIPTIONS.................44
K-ZZB. MAR. 2000 Printed in Japan
ORDER NO.
CRT2465
WL

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Summary of Contents for Pioneer YPM-2306ZF

  • Page 1: Table Of Contents

    PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER EUROPE N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER CORPORATION 2000 K-ZZB. MAR. 2000 Printed in Japan...

  • Page 2: Safety Information

    YPM-2306ZF - CD Player Service Precautions 2. During disassembly, be sure to turn the power off 1. For pickup unit(CXX1285) handling, please refer since an internal IC might be destroyed when a con- to"Disassembly"(see page 24). nector is plugged or unplugged.

  • Page 3: Exploded Views And Parts List

    YPM-2306ZF 2. EXPLODED VIEWS AND PARTS LIST 2.1 CD MECHANISM MODULE...
  • Page 4 YPM-2306ZF - CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Control Unit(S8) CWX2435 46 ••••• 2 Connector(CN802) CKS2192 47 Ball CNR1189 3 Connector(CN801) CKS2193 48 Belt CNT1086 4 Connector(CN901) CKS2767 49 Roller...

  • Page 5: Block Diagram And Schematic Diagram

    YPM-2306ZF 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM...
  • Page 6 YPM-2306ZF 3.2 CD MECHANISM MODULE Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. PICKUP UNIT CONTROL UNIT(S8) (SERVICE)(P8) CN101 RF-AMP, SERVO, DS CD DRIVER R803 D803 PHOTO UNIT(S8F) Q3 CPT231SXTU...
  • Page 7 YPM-2306ZF SWITCHES: CONTROL UNIT S801 : HOME SWITCH..ON-OFF S802 : CLAMP SWITCH..ON-OFF The underlined indicates the switch position. VO, DSP, DAC, LPF 16.934MHz 8.38MHz CN901 PE5165A CRO COMPUTER...
  • Page 8 YPM-2306ZF 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 9 YPM-2306ZF 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: 100 Tracks jump(FWD) Normal mode: Play (12cm) → REFO → REFO →...
  • Page 10 YPM-2306ZF ( CH1: R OUT 6 CH1: FE 8 CH1: TE 1V/div. 0.2V/div. 0.2V/div. 0.2ms/div. 1ms/div. 1ms/div. ) CH2: L OUT 3 CH2: FD 9 CH2: TD 1V/div. 0.5V/div. 0.5V/div. Normal mode: Play (1kHz 0dB) Normal mode: During AGC Normal mode: During AGC →...

  • Page 11: Pcb Connection Diagram

    YPM-2306ZF...
  • Page 12 YPM-2306ZF 4. PCB CONNECTION DIAGRAM 4.1 CD MECHANISM MODULE SIDE A 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 13 YPM-2306ZF SIDE B...

  • Page 14: Electrical Parts List

    YPM-2306ZF 5. ELECTRICAL PARTS LIST NOTES: - 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 15 YPM-2306ZF =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- CEV101M6R3 22µF/6.3V CCH1300 CKSQYB334K16 CKSRYB103K25 CKSRYB103K25 CKSRYB104K16 CKSRYB472K50 Unit Number : Unit Name : Photo Unit(S8F) MISCELLANEOUS Photo-transistor CPT231SXTU Photo-transistor CPT231SXTU Photo-transistor CPT231SXTU Miscellaneous Parts List Pickup Unit(Service)(P8) CXX1285...

  • Page 16: Adjustment

    YPM-2306ZF 6. ADJUSTMENT 6.1 CD ADJUSTMENT 1)Precautions • This unit is adjusted in a combination with the CD con- • This unit uses a single power supply (+5V) for the reg- trol unit(GGF1298). Each regulator key should be ulator. The signal reference potential, therefore, is operated at the unit.
  • Page 17 YPM-2306ZF - Flow Chart Test Mode In Reset SOURCE Select CD New test mode 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...

  • Page 18: Checking The Grating After Changing The Pickup Unit

    YPM-2306ZF 6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT • Note : The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mecha- nism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module.
  • Page 19 YPM-2306ZF Ech → Xch 20mV/div, AC Grating waveform Fch → Ych 20mV/div, AC 0° 30° 45° 60° 75° 90°...

  • Page 20: General Information

    YPM-2306ZF 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 21 YPM-2306ZF - New Test Mode S-CD plays the same way as before. If an error such as off focus, spindle unlocking, unreadable sub-code, or sound skipping occurs after setup, its cause and time occurred (in absolute time) are displayed. During setup, operational status of the control software (internal RAM: CPOINT) is displayed.
  • Page 22 YPM-2306ZF (4) Display of Operational Status (CPOINT) during Setup Status No. Contents Protective action CD+5V ON process in progress. None Servo LSI initialization (1/3) in progress. None Servo LSI CRAM initialization in progress. None Servo LSI initialization (2/3) in progress.
  • Page 23 YPM-2306ZF (5) Display Examples 1) During Setup (When status no. = 11) TRK No. MIN. SEC. 11" 2) During Operation (TOC read, TRK search, Play, FF and REV) The same as in the normal mode. 3) When a Protection Error Occurred Switch to the following displays (A) and (B) using the [BAND] switch: (A) Error occurrence timing display in absolute time.

  • Page 24: Disassembly

    YPM-2306ZF 7.1.2 DISASSEMBLY - Removing the Upper Frame 1. Remove six Springs A, two Springs B and four Screws. Upper Frame 2. Remove two Tabs situated on rear side of the Upper Frame, remove two Arms on the front side, then remove two Tabs on the front side.
  • Page 25 YPM-2306ZF - Removing the Guide Arm Assy Section 1. Remove a connector, a spring A and B. 2. Drive the Guide Arm Assy up aslant into rear side Guide Arm Assy Section direction, then remove it from a Pin. Finally, drive the assembly approximately 45 degrees upward, then slide the assembly toward left side to remove it.
  • Page 26 YPM-2306ZF - Removing the Loading Motor and Carriage Motor Guide 1. Remove the Spring and two Screws A. 2. Dismount the Loading Motor. 3. Remove the Belt, a Screw B, two Screws C, a Guide Screw Unit Carriage Motor and a Screw Unit.
  • Page 27 YPM-2306ZF 7.2 IC Pin Functions(PE5165A) Pin No. Pin Name Format Function and Operation xrst CD LSI reset output cdsrq F-Bus SRQ/ACK output CD5VON CD +5V power supply control output CDMUTE CD mute control output CDLOAD Load/Eject motor loading control output...
  • Page 28 YPM-2306ZF IC's marked by* are MOS type. Output Format Meaning Be careful in handing them because they are very liable C MOS output to be damaged by electrostatic induction. Middle N channel open drain *PE5165A...

  • Page 29: Explanation

    YPM-2306ZF 7.3 EXPLANATION 7.3.1 CIRCUIT DESCRIPTIONS The LSI (UPD63711GC) used on this unit comprises six main blocks ; the pre-amp section, servo, signal processor, DAC, CD text decoder (not used on this model) and LPF. It also equips with nine automatic adjustment functions.
  • Page 30 YPM-2306ZF 2) RF Amplifier and RFAGC Amplifier 3) RFOK Circuit The photo-detector outputs (A + C) and (B + D) are This circuit generates the signal that is used for indicat- added, amplified and equalized on this LSI and then ing the timing of closing the focus or state of the focus output to the RFI terminal as the RF signal.
  • Page 31 YPM-2306ZF 4) Focus Error Amplifier The photo-detector outputs (A + C) and (B + D) are passed through a differential amplifier and an error amplifier, and then (A + C − B − D) is output from Pin 91 as the FE signal.
  • Page 32 YPM-2306ZF 7) DFCT (Defect) Circuit 8) 3TOUT Circuit The DFCT signal is used for detecting defects on the The 3TOUT signal is generated by entering disturbance mirrored disc surface. It allows monitoring from the to the focus servo loop, comparing phase of fluctua- HOLD pin (Pin 35).
  • Page 33 YPM-2306ZF 10) EFM Circuit This circuit is used for converting the RF signal to digi- tal signal consisting of “0” and “1”. The RFO signal from Pin 75 is externally AC coupled, entered to Pin 74, then applied to the EFM circuit.
  • Page 34 YPM-2306ZF 2. SERVO SECTION (UPD63711GC : IC201) The servo section controls the operations such as error signal equalizing, in focus, track jump and carriage move. The DSP is the signal processing section used for data decoding, error correction and interpolation processing, among others.
  • Page 35 YPM-2306ZF When the above conditions are all met and the focus is closed, the XSI pin goes to low from the current high, then 40 ms later, the microcomputer begins to monitor the RFOK signal after it that has been passed through REFO the low pass filter.
  • Page 36 YPM-2306ZF 2) Tracking Servo System The digital equalizer is employed for the main equalizer IC301 on the tracking servo. Fig.12 shows the tracking servo IC201 UPD63711GC BA5985FM block diagram. R303 DIG. R302 LENS CONTROL JUMP PARAMETERS Fig.12 : TRACKING SERVO BLOCK DIAGRAM...
  • Page 37 YPM-2306ZF b) Brake Circuit The servo retracting performance can be deteriorate during the setup or track jump operation. In this con- nection, the brake circuit is used to ensure steady retract of the tracking servo. The brake circuit detects in...
  • Page 38 YPM-2306ZF 3) Carriage Servo System The carriage servo supplies the tracking equalizer’s low-frequency component (lens position data) output to the carriage equalizer, then, after providing a fixed amount of gain to it, outputs the drive signal from the LSI. This signal is then applied to the carriage motor via the driver IC.
  • Page 39 YPM-2306ZF 4) Spindle Servo System IC301 The spindle servo has the following modes. IC201 UPD63711GC BA5985FM 1 Kick : This mode is used for accelerating the disc rotation SPEED ERROR SIGNAL during setup. DIG. SPINDLE 2 Offset : SIGNAL BLOCK...
  • Page 40 YPM-2306ZF 3. AUTOMATIC ADJUSTMENT FUNC- TIONS Every circuit adjustment on the CD-LSI of this system is automated. Every circuit adjustment is automatically implemented when the disc is inserted or the CD mode is selected from the source key. The following describes how the adjustments are executed.
  • Page 41 YPM-2306ZF 5) Focus and Tracking Automatic Gain Control This adjustment takes place at the following timing : • When the focus close alone is completed during the This function is used for implementing automatic con- setup process. trol of the focus and tracking loop gain.
  • Page 42 YPM-2306ZF 8) Initial Adjusting Values All the automatic adjustments are implemented using the previous adjustment values as the initial values unless the microcomputer power (the backup power) is not turned off (though there are some exceptions). When the backup is turned off, automatic adjustment is executed based on the initial values rather than the pre- vious adjustment values.
  • Page 43 YPM-2306ZF 7.3.2 MECHANISM DESCRIPTIONS Centering Arm Centering Arm - Loading Operation (when a 12 cm disc is used) Disc Detection Arm 1. Insert a 12 cm disc (the sensor turns on the motor Lock Lever revolution). 2. The disc pushes the Lock Lever in, thereby resetting the lock currently applied to the Centering Arms.

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