Sony CDX-602 Service Manual
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Sony CDX-602 Service Manual

Sony CDX-602 Service Manual

Compact disc changer
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Download this manual See also: Operating Instructions
SERVICE MANUAL
Ver 1.0 2001.07
Sony Corporation
9-873-234-01
2001G0500-1
e Vehicle Company
C 2001.7
Shinagawa Tec Service Manual Production Group
SPECIFICATIONS
System
Compact disc digital audio system
Laser diode properties Material: GaAlAs
Wavelength: 780 nm
Emission Duration: Continuous
Laser out-put Power: Less than
44.6 µW*
* This output is the value measured at a distance of 200 mm
from the objective lens surface on the Optical Pick-up Block.
Frequency response
10 – 20,000 Hz
Wow and flutter
Below the measurable limit
Signal-to-noise ratio
94 dB
Outputs
BUS control output (8 pins)
Analog audio output (RCA pin)
Current drain
800 mA (during CD playback)
800 mA (during loading or ejecting
a disc)
Operating temperature –10°C to +55°C (14°F to 131°F)
Approx. 262 × 90 × 185 mm
Dimensions
/8 × 3
/8 × 7
(10
3
5
(w/h/d) not incl. projecting parts
and controls
Mass
Approx. 2.1 kg (4 lb. 10 oz.)
Power requirement
12 V DC car battery
(negative ground)
Supplied accessories
Disc magazine (1)
Parts for installation and
connections (1 set)
Design and specifications are subject to change without
notice.
CDX-602
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
3
/8 in.)
COMPACT DISC CHANGER
US Model
CDX-646
MG-251B-137
KSS-720A

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  • Page 1 CDX-602 SERVICE MANUAL US Model Ver 1.0 2001.07 Model Name Using Similar Mechanism CDX-646 CD Drive Mechanism Type MG-251B-137 Optical Pick-up Name KSS-720A SPECIFICATIONS System Compact disc digital audio system Laser diode properties Material: GaAlAs Wavelength: 780 nm Emission Duration: Continuous Laser out-put Power: Less than 44.6 µW*...

  • Page 2: Table Of Contents

    LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY.

  • Page 3: Servicing Notes

    Push to unlock the door Avec la partie fléchée tournée vers Etiquette vers le haut • To listen to an 8 cm (3 in.) CD, use the separately sold Sony CD adapter CSA-8. Poussez pour déverrouiller la porte le haut...

  • Page 4: Installation

    • Para realizar una instalación segura, emplee solamente la ferretería de montaje montage fourni. in.) only after making sure there is nothing on the Sony BUS compatible car audio • Utilisez uniquement les vis fournies. suministrada. other side of the mounting surface.

  • Page 5: Disassembly

    CDX-602 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed.

  • Page 6: Case (Upper T), Front Panel Assy

    CDX-602 Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE (UPPER T), FRONT PANEL ASSY 3 screw (PTT2.6 × 6) 3 screw (PTT2.6 × 6) 4 lever (FLT. 838) 5 case (upper T) 1 screw (PTT2.6 × 6) 3 screw (PTT2.6 ×...

  • Page 7: Jack Board

    CDX-602 3-4. JACK BOARD Remove the jack board of the arrow. 1 ground point screw (PTT2.6 × 6) 2 jack board 3-5. MAIN BOARD, SLIDE VARIABLE RESISTOR (ELEVATOR HEIGHT SENSOR) (RV202) 1 main flexible board (CNJ101) 5 two screws (FP)

  • Page 8: Elj Motor Assy (Elevator) (M104)

    CDX-602 3-6. ELJ MOTOR ASSY (ELEVATOR) (M104) 1 screw (PTT2 × 4) 2 bracket (EVM.S) 4 ELJ motor assy (elevator) (M104) 3 spacer (MO) 3-7. ESCUTCHEON (T) 3 two claws 2 Remove the claw in the direction of arrow A .

  • Page 9: Chassis (U.s) Sub Assy

    CDX-602 3-8. CHASSIS (U.S) SUB ASSY 2 Remove the edge in the direction 1 three screws of arrow A . (PTT2 × 4) 1 two screws (PTT2 × 4) 5 chassis (U.S) sub assy 1 screw (PTT2 × 4) 4 spring (SUT) 3-9.

  • Page 10: Rf Board

    CDX-602 3-10. RF BOARD 3 two screws (PS2 × 4) 4 RF board 3 two screws (PS2 × 4) 2 Remove four solders of the LSW board leads and spindle motor leads (M102). 2 Remove two solders of the sled motor leads 1 OP flexible board (CN102) (M101).

  • Page 11: Lsw Board, Spindle Motor (S) Sub Assy (M102)

    CDX-602 3-12. LSW BOARD, SPINDLE MOTOR (S) SUB ASSY (M102) 8 two precision screws (P1.7 × 2.2) 3 spring (chucking) 6 retainer (disc) 1 precision screw (P2 × 2.5) 4 precision screw (P2 × 2.2) 5 bracket (CP) 2 LSW board 9 Remove the spindle motor (S) sub assy (M102) in the direction of the arrow.

  • Page 12: Assembly

    CDX-602 SECTION 4 ASSEMBLY • This set can be assembled in the order shown below. 4-1. ASSEMBLY FLOW 4-2. OPTICAL PICK-UP COMPLETE ASSY (Page 12) 4-3. GEAR (LOMINI)/(LOAD CAM) ASSY (Page 13) 4-4. OPERATION CHECK (Page 13) Note: Follow the assembly procedure in the numerical order given.

  • Page 13: Gear (Lomini)/(Load Cam) Assy

    CDX-602 4-3. GEAR (LOMINI)/(LOAD CAM) ASSY gear (LOAD 2) 2 Attach the gear (LOMINI) at the position shown in Fig. A. gear (LOMINI) shaft (rotary prevention C) chuck plate 1 Move the lever (LOCK 3A) fully in the direction of arrow B to move the chuck plate up.

  • Page 14: Mechanical Adjustment

    CDX-602 SECTION 5 MECHANICAL ADJUSTMENT • Elevator Height (Address) Adjustment Adjustment Method: Note: This adjustments is necessary when the system controller (IC201), variable resistor (RV201), slider (R), slider (L), or chassis (ELV) 1. Connect this set to the master unit (e.g. MDX-C7970/C7970R), was replaced for any repair.

  • Page 15: Electrical Check

    CDX-602 SECTION 6 ELECTRICAL CHECK Note: Focus Bias Check 1. This check is performed with the set placed horizontally. 2. Power supply voltage: DC14.4 V (more than 3 A). Connection: 3. Be sure to use the disc “YEDS-18” parts code: 3-702-101-01, but only –...
  • Page 16 CDX-602 Tracking Offset Check Connection: – RF Board (Component Side) – oscilloscope (DC range) TP (VC) – IC101 TP (TE) Procedure: 1. Connect the oscilloscope to TP (TE) and TP (VC) on the RF board. 2. Put the set into play mode by loading the disc (YEDS-18).

  • Page 17: Diagrams

    CDX-602 SECTION 7 DIAGRAMS 7-1. BLOCK DIAGRAM – SERVO Section – FILTER RF AMP, 53 56 55 FOCUS/TRACKING ERROR AMP IC101 CN901 (1/2) DETECTOR AOUT1 AIN1 LOUT1 SERIAL RFAC GROUND- RFAC RFAC RF EQ RFAC ASYMMENTRY DIGITAL DIGITAL FILTER, AUDIO SUMMING &...

  • Page 18: Block Diagram - Bus Control/Power Supply Section

    RESET SIGNAL CN901 (2/2) RESET GENERATOR IC303 CONTROL PS901 +3.3V B. UP +3.3V REGULATOR B. UP Q303, 305 BUS INTERFACE (FOR SONY BUS) IC302 DATA UNI SI DATA UNI SO UNI CK BUSON OUT BUSON BUSON BUSON OUT BUSON IN RESET...

  • Page 19: Note For Printed Wiring Boards And Schematic Diagrams

    CDX-602 7-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location Note on Printed Wiring Board: Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF • X : parts extracted from the component side.

  • Page 20: Printed Wiring Boards - Rf/Lsw Boards

    CDX-602 7-4. PRINTED WIRING BOARDS – RF/LSW Boards – • See page 19 for Circuit Boards Location. • Semiconductor Location Ref. No. Location IC101 IC201 Q101 Q102 M101 (SLED) M103 (CHUKING) OPTICAL PICK-UP BLOCK (KSS-720A) OP FLEXIBLE BOARD (RFAC) (VC)

  • Page 21: Schematic Diagram - Rf/Lsw Boards

    CDX-602 7-5. SCHEMATIC DIAGRAM – RF/LSW Boards – • • See page 27 for for Waveforms. See page 28 for IC Block Diagrams. (Page 24) The components identified by mark 0 or dotted line with mark 0 are critical for safety.

  • Page 22: Printed Wiring Boards - Main Board (Component Side)

    CDX-602 7-6. PRINTED WIRING BOARDS – MAIN Board (Component Side) – • See page 19 for Circuit Boards Location. • Semiconductor Location Ref. No. Location D301 MAIN BOARD (COMPONENT SIDE) D304 D305 D306 D307 C109 D310 C105 C104 D312 C108...

  • Page 23: Printed Wiring Boards - Main (Conductor Side)/Switch Boards

    CDX-602 7-7. PRINTED WIRING BOARDS – MAIN (Conductor Side)/SWITCH Boards – • See page 19 for Circuit Boards Location. • Semiconductor Location Ref. No. Location MAIN BOARD IC304 H-12 (CONDUCTOR SIDE) IC305 F-12 (CHASSIS) 1-681-576- (11) (CHASSIS) SWITCH BOARD SW801...

  • Page 24: Schematic Diagram - Main Board (1/2)

    CDX-602 7-8. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • • See page 27 for Waveforms. See page 28 for IC Block Diagram. C101 R114 SCOR SQSO COUT LMUT TP101 MIRR RMUT R501 C503 DFCT AVDD2 0.001 TP102 AOUT2 TP103...

  • Page 25: Schematic Diagram - Main (2/2)/Switch Boards

    (CHASSIS) TP322 TP324 IC302 BA8272AFV-E2 R301 ELEVATOR MOTOR DRIVE RESET DATA VREF IC301 LB1930M-TLM BUSON BUSON BUSON BUS INTERFACE TP305 (FOR SONY BUS) TP306 JACK TP307 DATA FLEXIBLE TP308 BUSON BOARD TP309 C301 C302 C303 C304 D304 D301 D305 C306...

  • Page 26: Printed Wiring Boards - Jack Board

    7-11. SCHEMATIC DIAGRAM – JACK Board – See page 19 for Circuit Boards Location. JACK BOARD (COMPONENT SIDE) C906 JACK FLEXIBLE BOARD MAIN BOARD CN301 (Page 22) (Page 25) 1-681-577- (11) AUDIO OUT JACK BOARD (CONDUCTOR SIDE) CONTROL (FOR SONY BUS) 1-681-577- (11)
  • Page 27 CDX-602 • Waveforms – RF Board – – MAIN Board – 1 IC101 wh (MDP) (CD play mode) 1 IC101 qh (FE) (CD play mode) 1.8 Vp-p Approx. 100 mVp-p 7.5 µs 2 IC101 qk (TE) (CD play mode) 2 IC101 yj (XTAO) (CD play mode) Approx.
  • Page 28 CDX-602 • IC Block Diagrams – RF Board – IC101 CXA2581N-T4 RW/ROM DC OFST RFDCI – – RFDCO – RW/ROM VOFST APC AMP EQ ON/OFF RFAC EQ IN RW/ROM RFAC AC SUM SUMMING VOFST – – RW/ROM TE BAL RW/ROM –...
  • Page 29 CDX-602 IC201 LA6576L-TE-L S-GND THERMAL SHUT DOWN CH2-4 INPUT MUTE2 MUTE VCC2 MUTE1 MUTE VLO– OUTPUT VIN4 CONTROL VLO+ VIN4– VO4+ VIN4+ LEVEL SHIFT VO4– VREF-IN VIN1/VREF VIN1 (VREF)-SW SWITCH VO3+ LEVEL VREF-OUT (CH1) SHIFT 5VREG VO3– – REG-OUT –...
  • Page 30 CDX-602 – MAIN Board – IC101 CXD3017Q ERROR DIGITAL CORRECTOR ASYMMETRY DIGITAL CORRECTOR OPERATIONAL LRCK AMPLIFIER ANALOG SWITCH PCMD INTERFACE DEMODULATOR CONVERTER EMPH XVDD XTAI TIMING LOGIC CLOCK XTAO XTSL GENERATOR XVSS TES1 AVDD1 TEST AOUT1 SERVO DSP PWM GENERATOR...

  • Page 31: Ic Pin Function Description

    Serial data reading clock signal output to the CXD3017Q (IC101) SENS Internal status signal (sense signal) input from the CXD3017Q (IC101) BUSON Bus on/off control signal input from the SONY bus interface (IC302) “H”: bus on Battery detection signal input “L”: battery on BUCHK 47, 48 MD0, MD1 Setting terminal for the CPU operational mode (fixed at “H”...
  • Page 32 70 to 74 Two-way data bus with the S-RAM Not used (open) RAMIO3 System reset signal input from the SONY bus interface (IC302) and reset signal generator (IC303) RESET “L”: reset For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”...
  • Page 33 CDX-602 Pin No. Pin Name Description Sled limit in detect switch (SW3) input terminal LIM SW “L”: When the optical pick-up is inner position RW SEL CD-ROM/RW selection signal output “L”: CD-RW, “H”: CD-ROM RAMA4 Address signal output to the S-RAM Not used (open)

  • Page 34: Exploded Views

    CDX-602 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 0 or dotted line with mark may have some difference from the original are seldom required for routine service.

  • Page 35: Mechanism Deck Section-1 (Mg-251B-137)

    CDX-602 8-2. MECHANISM DECK SECTION-1 (MG-251B-137) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3378-091-1 CHASSIS (U. S) SUB ASSY 3-011-997-01 SPRING (STOPPER. LOWER) 3-024-161-01 SPRING (SUT)

  • Page 36: Mechanism Deck Section-2 (Mg-251B-137)

    CDX-602 8-3. MECHANISM DECK SECTION-2 (MG-251B-137) M104 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-024-170-01 SPRING (SB), TENSION * 154 3-014-685-01 SPACER (MO) * 152 3-040-790-02 BRACKET (EVM. S) M104 A-3301-123-A ELJ MOTOR ASSY (ELEVATOR)

  • Page 37: Mechanism Deck Section-3 (Mg-251B-137)

    CDX-602 8-4. MECHANISM DECK SECTION-3 (MG-251B-137) M103 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 201 3-024-150-01 RETAINER (CHM) 3-010-252-11 ROLLER (CRE) * 202 X-3378-080-1 BRACKET (CHM. D) ASSY 3-010-268-01 SPRING (DH), TENSION 3-321-813-01 WASHER, COTTER POLYETHYLENE...

  • Page 38: Mechanism Deck Section-4 (Mg-251B-137)

    CDX-602 8-5. MECHANISM DECK SECTION-4 (MG-251B-137) not supplied M102 not supplied M101 not supplied The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No.

  • Page 39: Electrical Parts List

    CDX-602 SECTION 9 ELECTRICAL PARTS LIST JACK MAIN NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 40 CDX-602 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C505 1-124-589-11 ELECT 47uF C506 1-124-589-11 ELECT 47uF R306 1-216-841-11 METAL CHIP 1/16W R309 1-216-841-11 METAL CHIP 1/16W < DIODE > R310 1-216-845-11 METAL CHIP 100K...
  • Page 41 CDX-602 SWITCH Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C106 1-164-156-11 CERAMIC CHIP 0.1uF R210 1-216-839-11 METAL CHIP 1/16W C107 1-164-156-11 CERAMIC CHIP 0.1uF R211 1-216-833-11 METAL CHIP 1/16W C108 1-107-826-11 CERAMIC CHIP 0.1uF R212...
  • Page 42 CDX-602 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ACCESSORIES & PACKING MATERIALS ******************************* 3-225-284-11 MANUAL, INSRTUCTION (ENGLISH, FRENCH, SPANISH, TRADITIONAL CHINESE) A-3301-944-A MAGAZINE (250T) ASSY *********************************************************** PARTS FOR INSTALLATION AND CONNECTIONS ************************************** 3-040-583-21 BRACKET (T)
  • Page 43 CDX-602 MEMO...
  • Page 44 CDX-602 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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