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Pioneer CDX-FM657 Service Manual
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Pioneer CDX-FM657 Service Manual

Universal multi-cd system
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Service
Manual
UNIVERSAL MULTI-CD SYSTEM
CDX-FM657
CDX-FM657
CDX-FM657
- See the separate manual CX-892(CRT2356) for the CD mechanism description, disassembly and circuit
description.
- The CD mechanism employed in this model is one of C7 series.
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
3. SCHEMATIC DIAGRAM ...........................................14
4. PCB CONNECTION DIAGRAM ................................26
5. ELECTRICAL PARTS LIST ........................................34
6. ADJUSTMENT..........................................................38
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-FM657/X1N/UC
X1N/EW
X1N/ES
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
7. GENERAL INFORMATION .......................................45
7.1 PARTS .................................................................45
7.1.1 IC................................................................45
7.1.2 DISPLAY ....................................................51
7.2 DIAGNOSIS ........................................................52
7.2.1 DISASSEMBLY .........................................52
7.2.2 TEST MODE ..............................................54
7.3 BLOCK DIAGRAM ..............................................60
8. OPERATIONS AND SPECIFICATIONS.....................62
K-ZZY. FEB. 1999 Printed in Japan
ORDER NO.
CRT2316
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. FEB. 1999 Printed in Japan...
  • Page 2 CDX-FM657 - CD Player Service Precautions 3. Please checking the grating after changing the pick- 1. For pickup unit(CXX1285) handling, please refer up unit (See page 39). to"Disassembly"(See page 52). During replacement, 4. Since these screws protects the mechanism during...

  • Page 3: Safety Information

    CDX-FM657 1. SAFETY INFORMATION 1.1 CDX-FM657/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-FM657 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING...
  • Page 5 CDX-FM657 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-FM657 Part No. Mark No. Description CDX-FM657/X1N/UC CDX-FM657/X1N/EW CDX-FM657/X1N/ES 37 Angle Assy CXB3591 CXB3591 CXB3591 38 ••••• 39 ••••• 40 Bracket Not used CNC5114 Not used 41 Bracket Not used CNC5115 Not used 42 Caution Card CRP1090 CRP1090 CRP1090 43 Caution Card...
  • Page 7 CDX-FM657 2.2 EXTERIOR...
  • Page 8 CDX-FM657 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BMZ26P040FMC 41 Cover CNS5223 2 Screw BMZ30P040FZK 42 LCD(LCD901) CAW1514 3 Button CAC4632 43 Holder CNC8062 4 Screw CBA1460 44 Lighting Conductor...
  • Page 9 CDX-FM657 (2) CONTRAST TABLE CDX-FM657/X1N/UC,CDX-FM657/X1N/EW and CDX-FM657/X1N/ES are constructed the same except for the following: Part No. Mark No. Symbol and Description CDX-FM657/X1N/UC CDX-FM657/X1N/EW CDX-FM657/X1N/ES 9 Cord CDE5812 CDE5813 CDE5812 27 Extension Unit CWX2305 CWX2311 CWX2305 36 Display Assy CXB3248...
  • Page 10 CDX-FM657 2.3 CD MECHANISM MODULE...
  • Page 11 CDX-FM657 - CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Connector CDE6069 46 Spacer CNM6146 2 CD Core Unit (C7) CWX2273 47 Sheet CNM6296 3 Connector(CN701) CKS1963 48 PCB CNP5227 49 PCB...
  • Page 12 CDX-FM657 Mark No. Description Part No. 91 Screw JGZ17P025FZK 92 Pickup Unit(Service) CXX1285 93 ••••• 94 ••••• 95 Screw IMS26P040FMC 96 Screw JFZ20P025FNI 97 Photo-transistor(Q851) PT4800 CSN1051 Spring Switch(S851,S853) 99 LED(D851) CN504-2 100 Spring Switch(S852) CSN1052...
  • Page 13 CDX-FM657 2.4 MAGAZINE ASSY - MAGAZINE ASSY SECTION PARTS LIST Mark No. Description Part No. 1 Magazine Assy CXB4027 2 Label CRW1396 3 Tray CNV5341...

  • Page 14: Schematic Diagram

    CDX-FM657 3. SCHEMATIC DIAGRAM 3.1 OVERALL CONNECTION DIAGRAM Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. PICKUP UNIT(SERVICE) MECHANISM CXX1285 RF-AMP,S DSP,DAC M854 CXB3004 M851 CXB3003 CSN1051 PT4800 SWITCH PCB...
  • Page 15 CDX-FM657 CD CORE UNIT MP,SERVO, 19 20 OR DRIVER A1/2...
  • Page 16 CDX-FM657 LOUT AAGND ROUT SYSTEM CONTROLLER...
  • Page 17 CDX-FM657 SRAM CN201 GGC1257 (SRM2B256SLTMX70) IP-BUS DRIVER A2/2...
  • Page 18 CDX-FM657 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-FM657 8 CH1: TE 0 MD 8 CH1: TE 0.2V/div. 0.5V/div. 0.5V/div. 0.1s/div. 5ms/div. 20ms/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-FM657 ( CH1: R OUT 8 CH1: TE 6 CH1: FE 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 21 CDX-FM657...
  • Page 22 CDX-FM657 3.2 EXTENSION PCB 19kHz C205,206 C207,208 ADD ON MODE UC,ES CN701 38KHz 7.2MHz LOOP FILTER 6V REG. 3V REG. 5V REG. VD REGULATOR...
  • Page 23 CDX-FM657 MPX AMP PILOT BUFFER AMP CN501 CN901 FUSE 2A UC,ES:CEK1018 EW:CEK1033 1K(1/2W) EXTENSION UNIT...
  • Page 24 CDX-FM657 3.3 ANTENNA SELECT UNIT...
  • Page 25 CDX-FM657 3.4 DISPLAY ASSY...

  • Page 26: Pcb Connection Diagram

    CDX-FM657 4. PCB CONNECTION DIAGRAM SIDE A M852 4.1 CD CORE UNIT 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-...
  • Page 27 CDX-FM657 2. Viewpoint of PCB diagrams SIDE B Capacitor Connector SIDE A SIDE B P.C.Board Chip Part...
  • Page 28 CDX-FM657 4.2 EXTENSION UNIT SIDE A CN701 EXTENSION UNIT CORD CN901 CN501 IP-BUS...
  • Page 29 CDX-FM657 SIDE B EXTENSION UNIT...
  • Page 30 CDX-FM657 4.3 MECHANISM PCB MECHANISM PCB PICKUP UNIT M851 (SERVICE) SPDL HOME M854 CN101 4.4 SWITCH PCB SWITCH PCB D851...
  • Page 31 CDX-FM657 4.5 MOTOR PCB MOTOR PCB 4.6 ANTENNA SELECT UNIT ANTENNA SELECT UNIT CN401 TUNER ANTENNA...
  • Page 32 CDX-FM657 4.7 DISPLAY ASSY SIDE A...
  • Page 33 CDX-FM657 SIDE B...

  • Page 34: Electrical Parts List

    CKS.., CCS.., CSZS..=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Unit Number : CWX2305(CDX-FM657/X1N/UC,ES) RS1/16S361J CWX2311(CDX-FM657/X1N/EW) RS1/16S225J Unit Name : Extension Unit RS1/16S225J RS1/16S223J MISCELLANEOUS RS1/16S223J BU4066BCF...
  • Page 35 CDX-FM657 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S470J CKSRYB102K50 RA3C471J CKSQYB473K16 RS1/16S183J CEALNP330M10 RS1/16S822J CEAL470M6R3 RS1/16S204J CKSRYB104K16 RS1/16S913J CCSRCH180J50 RS1/8S391J CCSRCH100D50 RS1/16S681J CCSRCH330J50 RS1/16S0R0J CCSRCH180J50 RS1/4S152J...
  • Page 36 CDX-FM657 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S0R0J RESISTORS RS1/16S222J RS1/16S222J RS1/8S120J RS1/16S681J RS1/8S100J RS1/16S222J RS1/16S222J RS1/16S104J RS1/16S104J RS1/16S0R0J RS1/16S513J RS1/16S473J RS1/16S103J RS1/16S473J RS1/16S393J RS1/16S222J RS1/16S182J...
  • Page 37 RESISTORS CKSRYB102K50 CKSRYB103K25 RD1/4PU683J RD1/4PU103J CKSRYB103K25 CKSRYB103K25 CAPACITORS CKSRYB103K25 CKSQYB104K25 CKCYB102K50 CKSRYB103K25 CEAL101M10 Unit Number : CXB3248(CDX-FM657/X1N/UC,ES) Unit Number : CXB3247(CDX-FM657/X1N/EW) Unit Name : Mechanism PCB Unit Name : Display Assy Photo-transistor PT4800 MISCELLANEOUS Spring Switch(HOME) CSN1051 PD6294A Unit Number :...

  • Page 38: Adjustment

    CDX-FM657 6. ADJUSTMENT 6.1 MODULATOR ADJUSTMENT - Connection Diagram Antenna Antenna Jack Plug Linear Detector (Spectrum Analyzer) ANTENNA SELECT ANTENNA OUT UNIT FM Tuner DC V Meter VR302 Oscilloscope VR301 CN401 L402 CN801 CN201 CN803 CN802 EXTENSION UNIT BACK UP...
  • Page 39 CDX-FM657 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 40 CDX-FM657 Grating waveform Echt Xch 20mV/div, AC Fcht Ych 20mV/div, AC 0˚ 30˚ 45˚ 60˚ 75˚ 90˚...
  • Page 41 CDX-FM657 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 42 CDX-FM657 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 43 CDX-FM657 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 CD, turn VR802 to the left(Fig. 2). VR802 EREF To lower the stage toward the sixth step by 0.1 mm, reduce the volt- age of EREF (adjusted in step 8) by 20 mV.
  • Page 44 CDX-FM657 Stopper bend of the clamp lever Frame stopper Dislocated toward the first CD. Fig. 2 Adjust the insertion gate of magazine to the third scale. Fig. 1 Engaged in the center and pressed downward. Fig. 3 Dislocated toward the sixth CD.

  • Page 45: General Information

    CDX-FM657 7. GENERAL INFORMATION 7.1 PARTS 7.1.1 IC - Pin Functions (UPD63710GC) Pin No. Pin Name Function and Operation Logic circuit GND HOLD Defect detection output MIRR MIRR output RFOK signal output Reset signal input Command/parameter identification signal input Data strobe signal input...
  • Page 46 CDX-FM657 Pin No. Pin Name Function and Operation PACK CD-TEXT PACK synchronous signal CD-TEXT data serial output CD-TEXT control parameter serial input tsck CD-TEXT serial clock input TSTB CD-TEXT parameter strobe signal input Logic circuit GND TEST Test pin ATEST...
  • Page 47 CDX-FM657 IC's marked by* are MOS type. *UPD63710GC Be careful in handling them because they are very liable to be damaged by electrostatic induction. BA05FP Reference voltage BA5986FM Mute Level shift Level shift Level shift Level shift Stand-by...
  • Page 48 CDX-FM657 - Pin Functions (PD5513A) Pin No. Pin Name Format Function and Operation PLDT PLL data output PLCK PLL clock output adena A/D reference voltage output TXTSTB TEXT parameter output TXTSO TEXT control parameter serial output TXTSI TEXT data serial input...
  • Page 49 CDX-FM657 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 & (EPSK) SRAM address bus output and (E2PROM clock output) A1 & (EPDI) SRAM address bus output and (E2PROM data input) A0 &...
  • Page 50 CDX-FM657 - Pin Functions (PD6294A) *PD6294A Pin No. Pin Name Function and Operation Crystal oscillator connection pin Crystal oscillator connection pin System reset MODE1,0 GRN/amb GREEN/AMBER select output UART output UART output remin Remote control signal input RVER Not used Not used 13–16...

  • Page 51: Display

    CDX-FM657 7.1.2 DISPLAY - CAW1514...

  • Page 52: Diagnosis

    CDX-FM657 7.2 DIAGNOSIS 7.2.1 DISASSEMBLY CD Mechanism Module Removing the Upper Case(not shown) 1. Remove the night screws. 2. Remove the Upper Case. Removing the CD Mechanism Module Remove the four dampers(Fig.5). Disconnect the connector(Fig.5). Remove the two springs(Fig.5). Fig.5 Disconnect the connector and then remove the CD Mechanism Module(Fig.6).
  • Page 53 CDX-FM657 - Removing the Pickup Unit 1. Insert the short pin from the pickup unit in the flexible substrate. 2. Remove the flexible substrate from the connector. 3. Remove the flexible card from the connector. 4. Remove the lead wires to which the spindle motor and carriage motor assy were soldered.

  • Page 54: Test Mode

    CDX-FM657 7.2.2 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 55 CDX-FM657 - 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 56 CDX-FM657 - 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 57 CDX-FM657 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.
  • Page 58 CDX-FM657 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 59 CDX-FM657 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 60: Block Diagram

    CDX-FM657 7.3 BLOCK DIAGRAM...
  • Page 61 CDX-FM657...

  • Page 62: Operations And Specifications

    CDX-FM657 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS Start the CD player 1. Switch the radio on and tune to Modulating Frequencies. • The initial value is 89.1 MHz. • If your radio does not have muting, there may be some noise before power switch of control unit is ON.
  • Page 63 CDX-FM657...

  • Page 64: Specifications

    CDX-FM657 8.2 SPECIFICATIONS CD Player unit Display unit System ... Compact disc audio system Weight ........78 g (0.1 lbs) Usable discs ......Compact Disc Dimensions .....100 (W) × 37 (H) × 18 (D) mm Signal format [3-15/16 (W) × 1-7/16 (H) × 5/8 (D) in] ....

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