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Sony CDX-424RF Service Manual

Compact disc changer system
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See also: Operating Instructions
CDX-424RF
SERVICE MANUAL
US Model
Canadian Model
E Model
Model Name Using Similar Mechanism
CDX-505RF
CD Drive Mechanism Type
MG-250C-137
Optical Pick-up Name
KSS-521A/J2N
SPECIFICATIONS
COMPACT DISC CHANGER SYSTEM
MICROFILM

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Summary of Contents for Sony CDX-424RF

  • Page 1 CDX-424RF SERVICE MANUAL US Model Canadian Model E Model Model Name Using Similar Mechanism CDX-505RF CD Drive Mechanism Type MG-250C-137 Optical Pick-up Name KSS-521A/J2N SPECIFICATIONS COMPACT DISC CHANGER SYSTEM MICROFILM...

  • Page 2: Table Of Contents

    SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES Magazine ass’y NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

  • Page 3: General

    SECTION 2 This section is extracted from instruction manual. GENERAL – 3 –...
  • Page 4 – 4 –...
  • Page 5 – 5 –...
  • Page 6 – 6 –...

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. COVER (UPPER), FRONT PANEL ASS’Y 1 screw 1 screw (PTT2.6 × 6) (PTT2.6 × 6) 2 cover (upper) 3 lever (FL) 1 screw 1 screw (PTT2.6 × 6) (PTT2.6 ×...
  • Page 8 JACK BOARD Remove the jack board of the arrow. 1 ground point screw (PTT2.6 × 6) 2 jack board MAIN BOARD 1 main flexible board (CNJ12) 6 three screws (FP) 7 main board 2 connector (CNP301) 3 screw 5 two precision screws (BVTT2 ×...
  • Page 9 ELEVATOR MOTOR ASS’Y (M104) 1 screw (PTT2 × 3) 2 bracket (EVM) 3 elevator motor ass’y (M104) ESCUTCHEON 3 two claws 2 Remove the claw of the arrow A . 4 Remove the ditch of the arrow B . 5 Remove the escutcheon of the arrow C .
  • Page 10 CASE (UPPER) ASS’Y 3 Remove the edge of the arrow A . 1 three screws (PTT2 × 4) 1 two screws (PTT2 × 4) 4 Remove the case (upper) ass’y of the arrow B . 1 screw (PTT2 × 4) CHASSIS ASS’Y 3 chassis ass’y 1 two polyethylene washers...
  • Page 11 RF BOARD 1 OP flexible board 2 two screws (CNJ11) (PS2 × 4) 2 two screws (PS2 × 4) 5 RF board 4 connector (CNP52) 4 two connectors (CNP11, 53) SLED MOTOR ASS’Y (M102), OPTICAL PICK-UP (KSS-521A/J2N) 1 two screws 2 sled motor ass’y (ESCUTCHEON) (M102)
  • Page 12 SW BOARD, SPINDLE MOTOR ASS’Y (M101) 8 two screws (P1.7 × 2.2) 3 spring (chucking) 6 retainer (disc) 1 screw (P2 × 2.2) 4 screw (P2 × 2.2) 5 bracket (CP) 9 Remove the spindle motor ass’y (M101) 2 SW board of the arrow.

  • Page 13: Mechanism Deck Assembly

    SECTION 4 MECHANISM DECK ASSEMBLY Note: Follow the assembly procedure in the numerical order given. OPTICAL PICK-UP COMPLETE ASS’Y 1 Move the lever (LOCK 3) in direction A , and return it a little in direction B from the position where the chuck plate is moved chuck plate down to the lower limit.
  • Page 14 OPERATION CHECK 1 Confirm that the slider moves in direction C to move down the chuck plate if the gear (LOAD 1) is rotated in direction A or the chuck plate moves up and the slider moves in direction D if the gear is rotated in direction B .

  • Page 15: Mechanical Adjustments

    7. After adjustment at addresses 5 to 6 is finished, check all op- erations from addresses 1 to 10 with the set placed vertically and horizontally respectively to confirm that the elevator shaft CDX-424RF positions in a range between comb teeth A to B. comb tooth at address 6...

  • Page 16: Electrical Adjustments

    SECTION 6 ELECTRICAL ADJUSTMENTS Note: • TRACKING OFFSET CHECK 1. Perform adjustments as given. 2. Power supply voltage: DC14.4 V (more than 3A). [RF BOARD] – Conductor Side – oscilloscope • FOCUS BIAS CHECK CNJ12 [RF BOARD] – Conductor Side – –...

  • Page 17: Diagrams

    SECTION 7 DIAGRAMS • FOCUS GAIN ADJUSTMENT • When gain is lowered... 7-1. NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM (COARSE ADJUSTMENT) The set does not play because of no focus operation. This adjustment is to be performed when replacing the following •...

  • Page 18: Printed Wiring Boards - Rf Section

    CDX-424RF 7-2. PRINTED WIRING BOARDS – RF Section – • Semiconductor Location Ref. No. Location IC11 IC51 IC52 (Page 24) – 19 – – 20 –...

  • Page 19: Schematic Diagram - Rf Section

    CDX-424RF 7-3. SCHEMATIC DIAGRAM – RF Section – • See page 31 for Waveforms. • See page 32 for IC Block Diagrams. (Page 27) The components identified by mark ! or dotted Les composants identifiés par une marque ! sont line with mark ! are critical for safety.

  • Page 20: Printed Wiring Boards - Main (Component Side)/Jack Board

    CDX-424RF 7-4. PRINTED WIRING BOARDS – MAIN (Component Side)/JACK Board – • Semiconductor Location Ref. No. Location D201 D202 D203 D204 D205 D206 D207 D301 F-10 D311 D416 D417 D501 D502 D503 D504 D505 (Page 20) IC101 B-11 IC202 IC204...
  • Page 21 CDX-424RF 7-5. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – • Semiconductor Location Ref. No. Location IC201 IC203 Q201 – 25 – – 26 –...
  • Page 22 CDX-424RF 7-6. SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 31 for Waveforms. • See page 33 for IC Block Diagrams. (Page 22) – 27 – – 28 –...
  • Page 23 CDX-424RF 7-7. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 31 for Waveforms. • See page 33 for IC Block Diagrams. – 29 – – 30 –...
  • Page 24 • Waveforms • IC Block Diagrams – RF Board – – MAIN Board (1/2) – – MAIN Board (2/2) – – RF Board – IC11 CXA1992BR 1 IC11 #£ (RF O) 1 IC101 @¶ (MDP) 6 IC401 !£ (MCK) 500 mV/DIV, 500 ns/DIV 33 32 31 30 2.5 Vp-p...

  • Page 25: Main Board (Conductor Side)

    IC52 BA6287F OUT1 OUT2 DRIVER DRIVER VREF CONTROL LOGIC POWER SAVE – MAIN Board – IC101 CXD2530Q 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 LRCK WDCK ASYE...
  • Page 26 IC204 BA8272F-E2 IC301 BA6287F OUT1 RESET OUT2 SWITCH DRIVER DRIVER VREF CONTROL LOGIC POWER SAVE IC401 TC9464FN-EL 14 13 MICROCOMPUTER INTERFACE INTERFACE CIRCUIT CIRCUIT DIGITAL FILTER CIRCUIT TIMING ATTENUATOR OPERATIONAL CIRCUIT GENERATOR DEEMPHASIS FILTER CIRCUIT D-∆ MODULATION CIRCUIT TEST OUTPUT OUTPUT CIRCUIT CIRCUIT...

  • Page 27: Ic Pin Function Description

    Sled limit in detect switch (SW1) input terminal LIM.SW “L”: When the optical pick-up is inner position BUSON Bus on/off control signal input from the SONY bus interface (IC204) “H”: bus on EJECT Eject switch (SW303) input terminal “H” active Save end detect switch (SW12) input terminal LOAD1 “L”: When completion of the disc chucking operation...
  • Page 28 Pin No. Pin Name Function SCOR Subcode sync (S0+S1) detection signal input from the CXD2530Q (IC101) SENS2 Internal status signal (sense signal) input from the CXA1992BR (IC11) Motor drive signal (elevator up direction) output to the elevator motor drive (IC301) “L”...

  • Page 29: Exploded Views

    SECTION 8 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark may have some difference from the original are seldom required for routine service.
  • Page 30 (2) MECHANISM DECK SECTION-1 (MG-250C-137) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3375-497-1 CHASSIS (U) SUB ASSY 4-965-759-01 WASHER, POLYETHYLENE 3-024-161-01 SPRING (SUT) 3-011-997-01 SPRING (STOPPER. LOWER) – 38 –...
  • Page 31 (3) MECHANISM DECK SECTION-2 (MG-250C-137) M104 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-024-170-01 SPRING (SB), TENSION X-3375-498-4 CHASSIS (D) SUB ASSY * 102 3-024-172-01 BRACKET (EVM) M104 A-3301-123-A ELJ MOTOR ASSY (ELEVATOR) – 39 –...
  • Page 32 (4) MECHANISM DECK SECTION-3 (MG-250C-137) M103 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 151 3-024-150-01 RETAINER (CHM) 3-010-268-01 SPRING (DH), TENSION * 152 X-3375-445-1 BRACKET (CHM) ASSY * 161 A-3290-194-F CHASSIS (EVY) (MAIN) ASSY 3-010-270-01 COVER (CHM) 3-010-254-01 SHAFT (ROTARY PREVENTION C) 3-321-813-01 WASHER, COTTER POLYETHYLENE...
  • Page 33 (5) MECHANISM DECK SECTION-4 (MG-250C-137) not supplied M101 not supplied M102 The components identified by Les composants identifiés par une mark ! or dotted line with marque ! sont critiques pour la mark ! are critical for safety. sécurité. Replace only with part num- Ne les remplacer que par une pièce ber specified.
  • Page 34 (6) HIDEAWAY UNIT SECTION Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-473-881-21 RF UNIT (HIDEAWAY) 1-532-731-11 FUSE (BLADE TYPE) (AUTO FUSE) (3A/32V) 1-777-519-12 CORD (WITH CONNECTOR) (POWER) 1-532-798-11 FUSE (BLADE TYPE) (AUTO FUSE) (1A/32V) (US, Canadian) 1-777-519-31 CORD (WITH CONNECTOR) (POWER) (E) –...

  • Page 35: Electrical Parts List

    SECTION 9 JACK MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark are seldom required for routine service. parts list may be different from the parts speci- ! are critical for safety.
  • Page 36 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > R104 1-216-061-00 METAL CHIP 3.3K 1/10W R105 1-216-061-00 METAL CHIP 3.3K 1/10W D201 8-719-210-33 DIODE EC10DS2 D202 8-719-210-33 DIODE EC10DS2 R106 1-216-073-00 METAL CHIP 1/10W D203 8-719-988-61 DIODE 1SS355TE-17...
  • Page 37 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3313-586-A RF BOARD, COMPLETE IC51 8-759-071-79 IC BA6297AFP IC52 8-759-040-83 IC BA6287F ******************* < CAPACITOR > < TRANSISTOR > 1-163-009-11 CERAMIC CHIP 0.001uF 8-729-141-48 TRANSISTOR 2SB624-BV345 1-113-500-11 TANTAL. CHIP 100uF 1-163-038-00 CERAMIC CHIP 0.1uF...
  • Page 38 CDX-424RF Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < VARIABLE RESISTOR > A-3291-950-C MAGAZINE (250) ASSY ************************************************************ RV14 1-238-091-11 RES, ADJ, CERMET PARTS FOR INSTALLATION AND CONNECTIONS < SWITCH > ************************************** SW11 1-762-946-12 SWITCH, PUSH (1 KEY)

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