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SERVICE MANUAL
SPECIFICATIONS
MICROFILM
CDX-2250/3500
Photo: CDX-2250
– 1 –
Canadian Model
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
FM/AM COMPACT DISC PLAYER
US Model
CDX-2250
E Model
CDX-3500
CDX-2180
MG-363X-121
KSS-521A

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   Summary of Contents for Sony CDX-2250

  • Page 1

    CDX-2250/3500 SERVICE MANUAL US Model Canadian Model CDX-2250 E Model CDX-3500 Photo: CDX-2250 SPECIFICATIONS Model Name Using Similar Mechanism CDX-2180 CD Drive Mechanism Type MG-363X-121 Optical Pick-up Name KSS-521A FM/AM COMPACT DISC PLAYER MICROFILM – 1 –...

  • Page 2: Service Note

    LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. GENERAL Location of Controls ..............4 Getting Started ................4 CD Player .................. 5 Radio ..................5 Other Functions ................. 6 Additional Information .............. 6 Connections ................8 2. DISASSEMBLY 2-1. Cover ASSY ................ 10 2-2. Front Panel ASSY ............... 10 2-3.

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  • Page 10: Disassembly

    SECTION 2 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 2-1. COVER ASSY 1 claw 4 cover assy 3 claws 2 claw 2-2. FRONT PANEL ASSY 1 claws 4 connector 5 front panel assy 2 claws 3 claw –...

  • Page 11: Display Board

    2-3. DISPLAY BOARD 1 P 2x8 4 DISPLAY board 2 P 2x8 3 claws 2-4. CD MECHANISM BLOCK 7 PTT 2.6x6 2 PTT 2.6x6 8 bracket (M/D) 3 PTT 2.6x6 5 CD mechanism block 6 PTT 2.6x6 4 CNP701 1 PTT 2.6x6 –...

  • Page 12: Main Board

    2-5. MAIN BOARD 5 MAIN board 4 screws (+BTT) 3 screw (+BTT) 2 PTT 2.6x8 1 PTT 2.6x8 2-6. HEAT SINK 4 heat sink 1 PTT 2.6x8 2 PTT 2.6x10 3 PTT 2.6x8 – 12 –...

  • Page 13: Chassis (t) Sub Assy

    2-7. CHASSIS (T) SUB ASSY 3 P 2x3 2 P 2x3 5 chassis (T) sub assy 1 Unsolder the lead wires. 4 P 2x3 white black 2-8. LEVER ASSY 5 guide (disc) 6 lever (R) assy 3 tension spring (LR) 7 lever (L) assy 1 PS 2x4 2 DISCIN board...

  • Page 14: Servo Board

    2-9. SERVO BOARD 6 PS 2x4 5 PS 2x4 2 CN2 1 CN3 3 P 2x3 7 SERVO board 4 loading motor assy 2-10. ROLLER ASSY • When installing, take note of the positions arm (roller) and washers. (Fig. 1) washer washers washer...

  • Page 15: Chassis (op) (o/s) Assy

    2-11. CHASSIS (OP) (O/S) ASSY 7 chassis (OP) (O/S) assy 8 compression spring (FL) 1 tension spring (angle) 9 compression spring (FL) 2 tension spring (KR1) 5 Fit lever (D) in the direction of the arrow. 6 Turn loading ring in the direction of the arrow.

  • Page 16: Electrical Adjustments

    SECTION 3 ELECTRICAL ADJUSTMENTS TUNER SECTION 0 dB = 1 µV FM SENS/IF Adjustment Setting: SOURCE button : FMI Cautions during repair D-BASS switch : OFF When the tuner unit is defective, replace it by a new one because Frequency Select switch (E model) : FM 200K its internal block is difficult to repair.

  • Page 17

    AM Auto Scan/Stop Level Adjustment Setting: digital voltmeter SOURCE n MODE button : AM D-BASS switch : OFF Frequency Select switch (E model) : AM 10K S-METER OUT – AM RF signal level dummy antenna generator meter antenna terminal 30 Ω 15 pF 4 Ω...

  • Page 18: Cd Section

    Focus Gain Adjustment (Coarse adjustment) CD SECTION This adjustment is not required unless the following parts are replaced: • Optical pick-up Note: • 1. CD Block basically constructed to operate without adjustment. Therefore, check each item in order given. Procedure: 2.

  • Page 19: Diagrams

    SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTION • IC801 µPD17705GC-537-3B9 (SYSTEM CONTROL) Pin No. Pin Name Pin Description SIRCS SIRCS input (A/D) IN-SW CD mechanism position detection D-SW CD mechanism position detection SELF-SW CD mechanism position detection L-SW LIMIT switch LM-EJ Loading motor control (Eject direction) LM-LOD...

  • Page 20: Connections

    Pin No. Pin Name Pin Description ILL-ON Illumination output C.ALARM Caution alarm select input (Used/Not used) Not used (Connect to ground) — Fixed at “H” in this set. LCD-CE LCD drive chip select output EZ-SEL SHIFT + input SENS Information input from servo IC. Focus OK input LD-ON Laser diode control...

  • Page 21: Circuit Boards Location

    4-2. CIRCUIT BOARDS LOCATION • Waveforms (MODE:PLAY) DISCIN board SUB board Approx. 620mVp-p TU01 (FEO) tuner assy LIMIT board 1.2Vp-p #¡ (RFO) Approx. 200mVp-p $™ (TEO) 2.6Vp-p DISPLAY board MAIN board 7.6µsec (MDP) LOAD board SERVO board 5.8Vp-p 22.7µsec @º (LRCK) 5.7Vp-p 474nsec...

  • Page 22: Printed Wiring Boards -cd Mechanism Section

    CDX-2250/3500 4-3. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Semiconductor Location Ref. No. Location Note: • X : parts extracted from the component side. • Y : parts extracted from the conductor side. • b : Pattern from the side which enables seeing.

  • Page 23: Schematic Diagram -cd Mechanism Section

    CDX-2250/3500 4-4. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 22 for Waveforms and Note and page 37 for IC Block Diagrams. (Page – 25 – – 26 –...

  • Page 24: Printed Wiring Board -display Section

    CDX-2250/3500 4-5. PRINTED WIRING BOARD — DISPLAY SECTION — Note: • Semiconductor Location • : Through hole. ® Ref. No. Location Ref. No. Location Ref. No. Location • b : Pattern from the side which enables seeing. (D551) B-10 D566 D574 (The other layer’s patterns are not indicated.)

  • Page 25: Schematic Diagram -display Section

    CDX-2250/3500 4-6. SCHEMATIC DIAGRAM — DISPLAY SECTION — (Page 36) Note: • C : panel designation. • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics • Voltage is dc with respect to ground under no-signal and tantalums.

  • Page 26: Printed Wiring Board -main Section

    CDX-2250/3500 4-7. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor Location Ref. No. Location Ref. No. Location D401 Q102 D402 Q201 D604 Q202 D701 Q401 D811 Q402 D812 Q601 D901 Q602 D902 Q605 D903 Q606 D904 Q801 D905 Q901...

  • Page 27: Schematic Diagram -main Section (1/2)

    CDX-2250/3500 4-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — (Page 26) Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and W or less unless otherwise specified.

  • Page 28: Schematic Diagram -main Section (2/2)

    CDX-2250/3500 4-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 37 for IC Block Diagrams. (Page 29) – 35 – – 36 –...

  • Page 29: Ic Block Diagrams

    • IC Block Diagrams IC401 LC75374E LFIN – LFOUT – – – – LSELO LROUT – – VREF CONTROL – SHIFT – DECODER LATCH REGISTER RROUT RSELO – – – – RFOUT – RFIN 6 7 8 9 10 IC402 TDA7385 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 IC3 BA6796FP-T1 LEVEL...

  • Page 30

    IC2 CXA1782BQ 27 26 25 LEVEL S MIRR SENS RF IV AMP1 DFCT C.OUT XRST RF IV AMP2 FE BIAS IIL DATA REGISTER INPUT SHIFT REGISTER DATA ADDRESS DECODER OUTPUT DECODER TOG1-3 FS1-4 TG1-2 TM1-7 PS1-4 F IV AMP BAL1-3 FZC COMP E IV AMP TE AMP...

  • Page 31: Exploded Views

    3-030-850-01 HEAT SINK (REG) 3-030-927-01 BRACKET (MD) 3-922-535-11 SCREW (+BTT) * 10 3-024-285-01 CUSHION (RUBBER) F901 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A A-3294-553-A MAIN BOARD, COMPLETE (CDX-2250) TU01 A-3301-697-A TUNER ASSY A-3294-635-A MAIN BOARD, COMPLETE (CDX-3500) – 39 –...

  • Page 32: Front Panel Section

    Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3376-779-1 PANEL (S) ASSY, FRONT (CDX-2250) 3-019-548-01 RING X-3377-101-1 PANEL (S) ASSY, FRONT (CDX-3500) 3-019-543-01 KNOB (D-BASS) 3-019-544-03 KNOB (SEEK/AMS)(CDX-2250) * 61 X-3376-745-1 HOLDER ASSY, LCD 3-019-544-23 KNOB (SEEK/AMS)(CDX-3500)

  • Page 33: Cd Mechanism Section (1)

    5-3. CD MECHANISM SECTION (1) (MG-363X-121) M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-659-836-11 DISCIN BOARD 3-931-902-04 ARM (ROLLER) * 102 A-3291-816-B CHASSIS (T) SUB ASSY 3-931-909-01 SPRING (LR), TENSION 3-936-756-01 ROLLER (D) X-3371-501-1 LEVER (L) ASSY 3-321-393-01 WASHER, STOPPER 3-338-737-01 SCREW (2X3), + PS...

  • Page 34: Cd Mechanism Section (2)

    5-4. CD MECHANISM SECTION (2) (MG-363X-121) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-931-893-01 ARM, CHUCKING * 159 A-3277-802-C CHASSIS (M) COMPLETE ASSY 3-931-897-01 DAMPER (T) 3-014-727-01 WHEEL (LW), WORM 3-931-879-02 LEVER (D) * 154 3-913-404-11 RETAINER (DISC) 3-931-881-01 LEVER (LOCK) 3-931-894-01 BRACKET (CP)

  • Page 35: Cd Mechanism Section (3)

    5-5. CD MECHANISM SECTION (3) (MG-363X-121) M901 M902 Les composants identifiés par une The components identified by mark ! or dotted line with mark marque ! sont critiques pour la ! are critical for safety. sécurité. Replace only with part number Ne les remplacer que par une specified.

  • Page 36: Electrical Parts List

    < SWITCH > < IC > 1-572-288-21 SWITCH, PUSH 1-572-288-21 SWITCH, PUSH IC551 8-759-369-90 IC LC75822ED < JUMPER RESISTOR > ************************************************************** A-3294-555-A DISPLAY BOARD, COMPLETE (CDX-2250) JR512 1-216-296-00 SHORT JR513 1-216-296-00 SHORT ************************ JR514 1-216-296-00 SHORT A-3294-636-A DISPLAY BOARD, COMPLETE (CDX-3500)

  • Page 37

    Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R568 1-216-073-00 METAL CHIP 1/10W A-3294-553-A MAIN BOARD, COMPLETE (CDX-2250) R569 1-216-077-00 METAL CHIP 1/10W ********************* R581 1-216-090-00 METAL CHIP 1/10W R582 1-216-045-00 METAL CHIP 1/10W A-3294-635-A MAIN BOARD, COMPLETE (CDX-3500)

  • Page 38

    D401 8-719-109-71 DIODE RD3.9ES-B1 C614 1-163-022-00 CERAMIC CHIP 0.012uF D402 8-719-991-33 DIODE 1SS133T-77 (CDX-3500) D604 8-719-991-33 DIODE 1SS133T-77 D701 8-719-991-33 DIODE 1SS133T-77 (CDX-2250) C614 1-163-037-11 CERAMIC CHIP 0.022uF D811 8-719-991-33 DIODE 1SS133T-77 (CDX-2250) C615 1-163-022-00 CERAMIC CHIP 0.012uF D812 8-719-109-93 DIODE RD6.2ESB2...

  • Page 39

    1-216-295-00 SHORT Q917 8-729-101-07 TRANSISTOR 2SB798-DL JR27 1-216-295-00 SHORT Q918 8-729-027-43 TRANSISTOR DTC114EKA-T146 JR28 1-216-864-11 METAL CHIP 1/16W JR29 1-216-295-00 SHORT 0 (CDX-2250) < RESISTOR > JR30 1-216-295-00 SHORT 0 (CDX-2250) R101 1-216-071-00 METAL CHIP 8.2K 1/10W JR31 1-216-296-00 SHORT R102...

  • Page 40

    MAIN SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R703 1-216-025-00 RES,CHIP 1/10W R916 1-216-077-00 METAL CHIP 1/10W R704 1-216-033-00 METAL CHIP 1/10W R917 1-216-049-11 RES,CHIP 1/10W R918 1-216-065-00 RES,CHIP 4.7K 1/10W R706 1-216-037-00 METAL CHIP 1/10W R919 1-216-105-00 RES,CHIP...

  • Page 41

    Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-164-004-11 CERAMIC CHIP 0.1uF JR41 1-216-296-00 SHORT 0 (CDX-2250) JR43 1-216-296-00 SHORT 1-164-004-11 CERAMIC CHIP 0.1uF JR44 1-216-296-00 SHORT 1-164-004-11 CERAMIC CHIP 0.1uF JR45 1-216-296-00 SHORT 1-126-204-11 ELECT CHIP...

  • Page 42

    ************************************************************** 3-931-977-01 BRACKET MISCELLANEOUS 3-934-325-01 SCREW (+K 5X8 TP) 3-019-569-01 COLLAR ************* 3-916-012-01 BRACKET (ND), FITTING ASSIST (CDX-2250) 1-769-786-81 CORD (WITH CONNECTOR) 1-783-268-11 CABLE, FLAT X-3368-725-1 SCREW ASSY, FITTING (CDX-2250) ! 210 8-820-010-06 PICK-UP, OPTICAL KSS-521A/Q-NP X-3366-405-1 SCREW ASSY (EXP), FITTING (CDX-3500)

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Cdx-3500

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