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Sony CDX-747X Service Manual
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Sony CDX-747X Service Manual

Sony CDX-747X Service Manual

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QQ
3 7 63 1515 0
SERVICE MANUAL
Ver 1.1 2001.05
TE
L 13942296513
www
.
Sony Corporation
9-870-245-12
2001E0500-1
e Vehicle Company
C 2001.5
Shinagawa Tec Service Manual Production Group
http://www.xiaoyu163.com
System
Laser diode properties Material: GaAlAs
* 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
Wow and flutter
Signal-to-noise ratio
Outputs
Current drain
Operating temperature –10°C to +55°C (14°F to 131°F)
Dimensions
Mass
Power requirement
Supplied accessories
Design and specifications are subject to change without
notice.
x
ao
u163
y
i
http://www.xiaoyu163.com
CDX-747X
2 9
8
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
Compact disc digital audio system
Wavelength: 780 nm
Emission Duration: Continuous
Laser out-put Power: Less than
44.6 µW*
10 – 20,000 Hz
Below the measurable limit
102 dB
BUS control output (8 pins)
Analog audio output (RCA pin)
800 mA (during CD playback)
800 mA (during loading or ejecting
a disc)
Approx. 262 × 90 × 185 mm
/8 × 3
/8 × 7
(10
3
5
3
/8 in.)
(w/h/d) not incl. projecting parts
and controls
Approx. 2.1 kg (4 lb. 10 oz.)
12 V DC car battery
(negative ground)
Disc magazine (1)
Parts for installation and
connections (1 set)
COMPACT DISC CHANGER
co
.
9 4
2 8
US Model
E Model
NEW
MG-251B-137
KSS-720A
0 5
8
2 9
9 4
2 8
m
9 9
9 9

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  • Page 1 CDX-747X 3 7 63 1515 0 SERVICE MANUAL US Model E Model Ver 1.1 2001.05 Model Name Using Similar Mechanism CD Drive Mechanism Type MG-251B-137 Optical Pick-up Name KSS-720A SPECIFICATIONS L 13942296513 System Compact disc digital audio system Laser diode properties Material: GaAlAs...

  • Page 2: Table Of Contents

    LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS ELECTRICAL PARTS LIST ....... 40 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. http://www.xiaoyu163.com...

  • 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 way of manufacturing.

  • Page 4: Installation

    • Para realizar una instalación segura, emplee solamente la ferretería de montaje • Make holes of ø 3.5 mm ( in.) only after making sure there is nothing on the montage fourni. Sony BUS compatible car audio • Utilisez uniquement les vis fournies. suministrada. other side of the mounting surface.

  • Page 5: Disassembly

    CDX-747X SECTION 3 DISASSEMBLY 3 7 63 1515 0 • 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-747X 3 7 63 1515 0 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 ×...

  • Page 7: Jack Board

    CDX-747X 3 7 63 1515 0 3-4. JACK BOARD Remove the jack board of the arrow. 1 ground point screw (PTT2.6 × 6) 2 jack board L 13942296513 3-5. MAIN BOARD, SLIDE VARIABLE RESISTOR (ELEVATOR HEIGHT SENSOR) (RV202) 1 main flexible board...

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

    CDX-747X 3 7 63 1515 0 3-6. ELJ MOTOR ASSY (ELEVATOR) (M104) 1 screw (PTT2 × 4) 2 bracket (EVM.S) 4 ELJ motor assy (elevator) (M104) 3 spacer (MO) L 13942296513 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-747X 3 7 63 1515 0 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 ×...

  • Page 10: Rf Board

    CDX-747X 3 7 63 1515 0 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...

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

    CDX-747X 3 7 63 1515 0 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)

  • Page 12: Assembly

    CDX-747X SECTION 4 ASSEMBLY 3 7 63 1515 0 • 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: Gear (Lomini)/(Load Cam) Assy

    CDX-747X 3 7 63 1515 0 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-747X SECTION 5 3 7 63 1515 0 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-747X SECTION 6 ELECTRICAL CHECK 3 7 63 1515 0 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-747X 3 7 63 1515 0 Tracking Offset Check Connection: – RF Board (Component Side) – oscilloscope (DC range) TP (VC) – IC101 TP (TE) Procedure: L 13942296513 1. Connect the oscilloscope to TP (TE) and TP (VC) on the RF board.

  • Page 17: Diagrams

    CDX-747X SECTION 7 3 7 6 3 1 5 1 5 0 DIAGRAMS 7-1. BLOCK DIAGRAM – SERVO Section – DIGITAL SIGNAL PROCESSOR, FILTER DIGITAL SERVO PROCESSOR, D-RAM CONTROLLER IC101 DIGITAL DOUT 66 69 68 67 15 85 RF AMP,...

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

    IC303 PS901 +3.3V B. UP +3.3V REGULATOR B. UP 1 3 9 4 2 2 9 6 5 1 3 Q303, 304 BUS INTERFACE (FOR SONY BUS) IC302 DATA UNI SI DATA UNI SO UNI CK BUSON OUT BUSON BUSON...

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

    CDX-747X 3 7 6 3 1 5 1 5 0 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 •...

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

    CDX-747X 7-4. PRINTED WIRING BOARDS – RF/LSW Boards – • See page 19 for Circuit Boards Location. 3 7 6 3 1 5 1 5 0 • Semiconductor Location Ref. No. Location IC101 IC201 Q101 Q102 M101 (SLED) M103...

  • Page 21: Schematic Diagram - Rf/Lsw Boards

    CDX-747X 7-5. SCHEMATIC DIAGRAM – RF/LSW Boards – • • See page 28 for for Waveforms. See page 28 for IC Block Diagrams. 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3...

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

    CDX-747X 7-6. PRINTED WIRING BOARDS – MAIN Board (Component Side) – • See page 19 for Circuit Boards Location. Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 • Semiconductor Location Ref. No. Location D302 D303...

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

    7-7. PRINTED WIRING BOARDS – MAIN (Conductor Side)/SWITCH Boards – • See page 19 for Circuit Boards Location. CDX-747X Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 • Semiconductor Location Ref. No. Location IC304 H-11...

  • Page 24: Schematic Diagram - Main Board (1/3)

    CDX-747X 3 7 6 3 1 5 1 5 0 7-8. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • • See page 28 for Waveforms. See page 28 for IC Block Diagrams. (Page 21) 1 3 9 4 2 2 9 6 5 1 3...

  • Page 25: Schematic Diagram - Main Board (2/3)

    CDX-747X Ver 1.1 2001.05 7-9. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • 3 7 6 3 1 5 1 5 0 • See page 28 for Waveform. See page 28 for IC Block Diagram. (Page 24) BOARD (Page 26)

  • Page 26: Schematic Diagram - Main (3/3)/Switch Boards

    CDX-747X Ver 1.1 2001.05 3 7 6 3 1 5 1 5 0 7-10. SCHEMATIC DIAGRAM – MAIN (3/3)/SWITCH Boards – • • See page 28 for Waveforms. See page 28 for IC Block Diagrams. (Page 24) (Page 27)

  • Page 27: Printed Wiring Boards - Jack Board

    See page 19 for Circuit Boards Location. JACK FLEXIBLE BOARD (Page 26) MAIN BOARD CN301 (Page 22) 1 3 9 4 2 2 9 6 5 1 3 (11) 1-679-418- AUDIO OUT CONTROL (FOR SONY BUS) w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 28 CDX-747X 3 7 6 3 1 5 1 5 0 • Waveforms • IC Block Diagrams – RF Board – – MAIN Board – –RF Board – 1 IC101 qh (FE) (CD play mode) 1 IC101 rd (MDP) (CD play mode)
  • Page 29 CDX-747X 3 7 63 1515 0 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)
  • Page 30 CDX-747X 3 7 63 1515 0 IC101 CXD3027R 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 ERROR...
  • Page 31 CDX-747X 3 7 63 1515 0 IC203 BR24C16FJ-E2 IC301 LB1930M-TLM BUFFER START OUT1 MOTOR STOP CONTROL DRIVE LOGIC CIRCUIT SERIAL CIRCUIT OUT2 CONTROL H.V. PUMP/TIMING LOGIC BUFFER 8 VCC S-GND P-GND LOAD COMP DEVICE DATA RECOVERY ADDRESS COMPARATOR LOAD INC...

  • Page 32: Ic Pin Function Description

    Serial data reading clock signal output to the CXD3027R (IC101) u163 SENS Internal status signal (sense signal) input from the CXD3027R (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 http://www.xiaoyu163.com...
  • Page 33 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 34 CDX-747X 3 7 63 1515 0 Pin No. Pin Name Description Save end detect switch (SW2) input terminal SAVE SW “L”: When completion of the disc save operation Chucking end detect switch (SW1) input terminal LOAD SW “L”: When completion of the disc chucking operation...

  • Page 35: Exploded Views

    CDX-747X SECTION 8 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they The components identified by mark 0 or dotted line with mark 0 are may have some difference from the original are seldom required for routine service.

  • Page 36: Mechanism Deck Section-1 (Mg-251B-137)

    CDX-747X 3 7 63 1515 0 8-2. MECHANISM DECK SECTION-1 (MG-251B-137) L 13942296513 u163 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 37: Mechanism Deck Section-2 (Mg-251B-137)

    CDX-747X 3 7 63 1515 0 8-3. MECHANISM DECK SECTION-2 (MG-251B-137) M104 L 13942296513 Ref. No. Part No. Description u163 Remark Ref. No. Part No. Description Remark 3-024-170-01 SPRING (SB), TENSION * 154 3-014-685-01 SPACER (MO) * 152 3-040-790-01 BRACKET (EVM. S)

  • Page 38: Mechanism Deck Section-3 (Mg-251B-137)

    CDX-747X 3 7 63 1515 0 8-4. MECHANISM DECK SECTION-3 (MG-251B-137) L 13942296513 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...

  • Page 39: Mechanism Deck Section-4 (Mg-251B-137)

    CDX-747X 3 7 63 1515 0 8-5. MECHANISM DECK SECTION-4 (MG-251B-137) not supplied M102 L 13942296513 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.

  • Page 40: Electrical Parts List

    CDX-747X SECTION 9 JACK 3 7 63 1515 0 MAIN ELECTRICAL PARTS LIST 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 41 CDX-747X Ver 1.1 2001.05 3 7 63 1515 0 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C407 1-126-382-11 ELECT 100uF R109 1-216-857-11 METAL CHIP 1/16W R122 1-216-839-11 METAL CHIP 1/16W C408 1-164-156-11 CERAMIC CHIP 0.1uF...
  • Page 42 CDX-747X SWITCH 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3326-947-A RF BOARD, COMPLETE R201 1-216-826-11 METAL CHIP 2.7K 1/16W ****************** R202 1-216-833-11 METAL CHIP 1/16W R203 1-216-833-11 METAL CHIP 1/16W <...
  • Page 43 CDX-747X 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 7-627-553-37 PRECISION SCREW +P 2X3 TYPE 3 ************************************************************ ACCESSORIES & PACKING MATERIALS ******************************* 3-225-284-11 MANUAL, INSRTUCTION (ENGLISH, FRENCH, SPANISH, TRADITIONAL CHINESE)
  • Page 44 CDX-747X 3 7 63 1515 0 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.

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