Sony CDX-C5750 Service Manual
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Sony CDX-C5750 Service Manual

Sony CDX-C5750 Service Manual

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CDX-C5750/C5850
SERVICE MANUAL
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
17 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 1% total harmonic distortion.
Other Specifications
CD player section
System
Compact disc digital audio
system
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Laser Diode Properties
Material
GaAlAs
Wavelength
780 nm
Emission Duration
Continuous
Less than 44.6 µW*
Laser output power
* This output is the value measured at a distance
of 200 mm from the objective lens surface on the
Optical Pick-up Block.
Tuner section
FM
Tuning range
87.5 – 107.9 MHz
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity
12 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.5% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM
Tuning range
530 – 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
30 µV
Sensitivity
MICROFILM
Photo: CDX-C5750
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
Power amplifier section
Outputs
Speaker impedance
Maximum power output 40 W × 4 (at 4 ohms)
General
Outputs
Tone controls
Power requirements
Dimensions
Mounting dimensions
Mass
Supplied accessories
Design and specifications are subject to change without
notice.
FM/AM COMPACT DISC PLAYER
– 1 –
US Model
CDX-C5750/C5850
Canadian Model
CDX-C480/C580
MG-363T-121
KSS-521A
Speaker outputs
(sure seal connectors)
4 – 8 ohms
Line outputs (2)
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
12 V DC car battery
(negative ground)
Approx. 178 × 50 × 185 mm
× 2 × 7
(7
in.)
1/8
3/8
(w/h/d)
Approx. 182 × 53 × 162 mm
× 2
× 6
(7
in.)
1/4
1/8
1/2
(w/h/d)
Approx. 1.2 kg (2 lb. 10 oz.)
Parts for installation and
connections (1 set)
Front panel case (1)
CDX-C5750

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  • Page 1 CDX-C5750/C5850 SERVICE MANUAL US Model CDX-C5750/C5850 Canadian Model CDX-C5750 Photo: CDX-C5750 SPECIFICATIONS Model Name Using Similar Mechanism CDX-C480/C580 CD Drive Mechanism Type MG-363T-121 AUDIO POWER SPECIFICATIONS (US Model) Optical Pick-up Name KSS-521A POWER OUTPUT AND TOTAL HARMONIC DISTORTION 17 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 1% total harmonic distortion.

  • Page 2: Table Of Contents

    DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT 6. ELECTRICAL PARTS LIST ......... 53 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. – 2 –...
  • Page 3 SECTION 1 GENERAL This section is extracted from CDX-C5850’s instruction manual. – 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 2 front panel assy 1 button (release) – 10 –...

  • Page 11: Sub Panel (1) Assy

    2-3. SUB PANEL (1) ASSY 4 claw 5 sub panel (1) assy 1 PTT 2.6x6 3 claw 2 PTT 2.6x6 2-4. CD MECHANISM BLOCK 2 PTT 2.6x6 7 PTT 2.6x6 8 bracket (M/D) 3 PTT 2.6x6 5 CD mechanism block 6 PTT 2.6x6 4 CNP700 1 PTT 2.6x6...

  • Page 12: Main Board

    2-5. MAIN BOARD 3 ground point screws (PTT 2.6x6) 2 ground point screw (PTT 2.6x6) 4 MAIN board 1 PTT 2.6x8 2-6. HEAT SINK 4 heat sink 3 PTT 2.6x8 2 PTT 2.6x12 1 PTT 2.6x8 – 12 –...

  • Page 13: Chassis (T) Sub Assy

    2-7. CHASSIS (T) SUB ASSY 3 P 2x3 2 P 2x3 4 chassis (T) sub assy 1 Unsolder the lead wires. 2 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 DISC IN SW 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 washer washers washer Fig. 1 3 roller assy 4 PS 2x3 2 arm (roller) 5 LOAD SW board 1 tension spring (RA) –...

  • 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 (KF1) 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 0 dB = 1 µV TUNER SECTION FM SENS/IF Adjustment Setting: SOURCE button : FMI Cautions during repair D-BASS switch (C5750) : OFF When the tuner unit is defective, replace it by a new one because 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 (C5750) : OFF S-METER OUT AM RF signal – level dummy antenna generator meter antenna terminal 30 Ω 15 pF 4 Ω Procedure: 30 pF 1.

  • 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

    CDX-C5750/C5850 SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAM — CD SECTION — DIGITAL SIGNAL OPTICAL PICK-UP RF AMP, SERVO CONTROL PROCESSOR D/A CONVERTER KSS-521A IC702 MAIN 35 PD1 14 RF PCMD VOUTL SECTION 59 CLKO LRCK BCKIN VOUTR R-CH 36 PD2...

  • Page 20: Block Diagram -Main Section

    CDX-C5750/C5850 4-2. BLOCK DIAGRAM — MAIN SECTION — PJ400 C5750 PJ400 FRONT ELECTRONIC VOLUME R-CH R-CH IC401 PJ401 LINE AMP BUS AUDIO IN IC402 LINE OUT TUNER ASSY TU601 OUT FL SL2L INFL OUTFL SECTION TONE CNJ600 REAR (ANT) FM L-CH...

  • Page 21: Circuit Boards Location

    • Waveforms (MODE:PLAY) 4-3. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) DISC IN SW board SUB board for schematic diagram: • All capacitors are in µF unless otherwise noted. pF: µµF tuner assy Approx.

  • Page 22: Printed Wiring Boards -Cd Mechanism Section

    CDX-C5750/C5850 4-4. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Semiconductor Location Ref. No. Location (Page 31) M902 M901 (SLED) (SPINDLE) – 25 – – 26 –...

  • Page 23: Schematic Diagram -Cd Mechanism Section

    CDX-C5750/C5850 4-5. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 41 for IC Block Diagrams. • Refer to page 24 for Waveforms. note: • Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY ∗...

  • Page 24: Printed Wiring Board -Main Section

    CDX-C5750/C5850 4-6. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor Location Ref. No. Location Ref. No. Location (D402) IC703 D403 IC801 (D601) IC803 D-14 (D602) (IC901) F-13 D701 (IC902) (D702) F-12 (D801) B-14 Q110 (D807) B-13 Q111 (D809) B-13...
  • Page 25 CDX-C5750/C5850 (Page 25) (Page 38) – 31 – – 32 –...

  • Page 26: Schematic Diagram -Main Section (1/2)

    CDX-C5750/C5850 4-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 41 for IC Block Diagrams. (Page 35) note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ) : AM <...

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

    CDX-C5750/C5850 4-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 43 for IC Block Diagrams. (Page 34) (Page 39) MB90574PFV-G-193-BND note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ) : AM <...

  • Page 28: Printed Wiring Board -Display Section

    CDX-C5750/C5850 4-9. PRINTED WIRING BOARD — DISPLAY SECTION — (Page 31) • Semiconductor Location Ref. No. Location Ref. No. Location (D501) B-10 LED502 (D502) B-12 LED503 (D503) B-10 LED504 (D506) C-10 LED505 (D507) C-10 (Q502) B-13 (IC501) (Q503) (Q504) LED501...

  • Page 29: Schematic Diagram -Display Section

    CDX-C5750/C5850 4-10. SCHEMATIC DIAGRAM — DISPLAY SECTION — (Page 36) note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM – 39 – – 40 –...
  • Page 30 • IC Block Diagrams IC1 CXD2507AQ IC402, 403 TDA8574 (CDX-C5850 only) IC2 CXA1782BQ 27 26 25 VCCL BUFFER VCCL SERVO AUTO SEQUENCER DATA SVRL CL– XRST LIFT SENS BUFFER SUB CODE MUTE INTERFACE PROCESSOR SQCK DIGITAL LOCK SQSO REFERENCE VCCL TEST EXCK LGND...
  • Page 31 IC401 TDA7462D SE3L SE3R MUTE PAUSE PAUSE DETECT FRONT INPUT TREBLE/ OUT FL LOUDNESS VOICE BANDPASS VOLUME FADER GAIN & SOFT BASS CONTROL CONTROL SE1L AUTO MUTE CONTROL CIRCUIT CIRCUIT SE1R ZERO CIRCUIT FRONT MD– OUT FR FADER CDL+ CDL– COMPANDER CDR–...
  • Page 32 IC601 TDA7427AD1 LPOUT VDD1 VDD2 LP FM SWITCH CHARGE PHASE 11 BIT PROG LP1/LP2 GND AM PUMP COMP COUNTER LP HC LP AM SWITCH SWITCH SWM/DIR SWM/DIR V REF AM IN SWITCH AM/FM INLOCK 6 BIT PROG PRE COUNTER DETECTOR COUNTER :32/33 FM IN...

  • Page 33: Ic Pin Description

    4-11. IC PIN DESCRIPTION • IC801 MB90574PFV-G-193-BND (SYSTEM CONTROL) Pin No. Pin Name Pin Description LD ON Laser ON/OFF control output Focus OK signal detection input XLAT25 CD signal processing latch output DATA25 CD signal serial data output XRST Reset output to CD signal processor IC. GFS signal detection input —...
  • Page 34 Destination select input 1 (Fixed at “L” in this set.) AREA2 Destination select input 2 (Fixed at “L” in this set.) AREA3 Destination select input 3 (Fixed at “L” (CDX-C5750) or “H” (CDX-C5850) in this set.) BAND Not used in this set. ACC IN...
  • Page 35 Pin No. Pin Name Pin Description 112, 113 — Not used. (Open) CD LD Loading motor control output (Loading direction) CD EJ Loading motor control output (Eject direction) L SW Sled limit switch detection input IN SW/(PH1) Disc insertion detection input D SW DOWN switch detection input —...

  • Page 36: Exploded Views

    SECTION 5 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by number in the exploded views are not supplied. Example : mark ! or dotted line with mark. • Items marked “*” are not stocked since KNOB, BALANCE (WHITE) ...

  • Page 37: Front Panel Section

    5-2. FRONT PANEL SECTION not supplied (DISPLAY board) LCD501 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-019-549-51 BUTTON (RELEASE) * 62 3-030-879-01 BRACKET (LCD) 3-019-544-41 KNOB (SEEK/AMS) 3-021-407-01 SHEET (D) (LCD) 3-375-373-01 SPRING (RELEASE) * 64 3-032-289-01 SHEET (DIFFUSION 5) 3-019-550-01 BUTTON (MODE/SOUND) 3-030-863-01 PANEL, FRONT BACK...

  • Page 38: Cd Mechanism Section (1)

    5-3. CD MECHANISM SECTION (1) (MG-363T-121) M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-659-836-11 DISC IN SW BOARD 3-931-902-04 ARM (ROLLER) * 102 A-3291-816-B CHASSIS (T) SUB ASSY 3-936-756-01 ROLLER (D) 3-931-909-01 SPRING (LR), TENSION 3-321-393-01 WASHER, STOPPER X-3371-501-1 LEVER (L) ASSY * 113...

  • Page 39: Cd Mechanism Section (2)

    5-4. CD MECHANISM SECTION (2) (MG-363T-121) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-931-893-01 ARM, CHUCKING A-3277-802-C CHASSIS (M) ASSY 3-931-897-01 DAMPER (T) 3-931-883-01 SPRING (TR), TENSION 3-931-879-02 LEVER (D) 3-931-881-01 LEVER (LOCK) * 154 3-913-404-11 RETAINER (DISC) 3-931-882-02 GEAR (MDL) 3-931-894-01 BRACKET (CP)

  • Page 40: Cd Mechanism Section (3)

    5-5. CD MECHANISM SECTION (3) (MG-363T-121) M901 M902 The components identified by Les composants identifiés par une 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 piéce specified.

  • Page 41: Electrical Parts List

    SECTION 6 DISC IN SW DISPLAY ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by the parts list may be different from the they are seldom required for routine service. mark ! or dotted line with mark.
  • Page 42 DISPLAY LIMIT SW LOAD SW MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R517 1-216-057-00 METAL CHIP 2.2K 1/10W 1-659-835-12 LIMIT SW BOARD R518 1-216-061-00 METAL CHIP 3.3K 1/10W *************** R519 1-216-065-00 RES,CHIP 4.7K 1/10W R520 1-216-069-00 METAL CHIP 6.8K...
  • Page 43 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C217 1-124-589-11 ELECT 47uF C648 1-163-251-11 CERAMIC CHIP 100PF (C5850) C653 1-163-009-11 CERAMIC CHIP 0.001uF C218 1-124-589-11 ELECT 47uF C655 1-163-251-11 CERAMIC CHIP 100PF (C5850) (C5850) C219 1-124-589-11 ELECT 47uF C692...
  • Page 44 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > IC803 8-759-449-89 IC BA8270F-E2 IC901 8-759-572-12 IC BA4903 CNP501 1-774-701-11 PIN, CONNECTOR 16P IC902 8-759-363-81 IC XC61AN4002PR CNP700 1-764-617-12 PIN, CONNECTOR (PC BOARD) 30P CNP800 1-764-422-11 PLUG, CONNECTOR 12P <...
  • Page 45 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q902 8-729-027-52 TRANSISTOR DTC124EKA-T146 R207 1-216-082-00 RES,CHIP 1/10W Q903 8-729-019-00 TRANSISTOR 2SD2394-G (C5850) Q904 8-729-019-00 TRANSISTOR 2SD2394-G R208 1-216-689-11 METAL CHIP 0.5% 1/10W Q905 8-729-027-43 TRANSISTOR DTC114EKA-T146 (C5850) Q906 8-729-620-06 TRANSISTOR 2SC3052-EF...
  • Page 46 MAIN SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R697 1-216-064-00 METAL CHIP 4.3K 1/10W R902 1-216-049-11 RES,CHIP 1/10W R698 1-216-065-00 RES,CHIP 4.7K 1/10W R903 1-216-041-00 METAL CHIP 1/10W R699 1-216-079-00 METAL CHIP 1/10W R904 1-216-073-00 METAL CHIP 1/10W R701...
  • Page 47 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-163-989-11 CERAMIC CHIP 0.033uF JR16 1-216-296-00 SHORT 1-163-021-11 CERAMIC CHIP 0.01uF JR17 1-216-296-00 SHORT 1-163-989-11 CERAMIC CHIP 0.033uF JR18 1-216-296-00 SHORT 1-164-004-11 CERAMIC CHIP 0.1uF JR19 1-216-296-00 SHORT 1-164-004-11 CERAMIC CHIP 0.1uF JR20...
  • Page 48 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR70 1-216-296-00 SHORT 1-216-093-00 RES,CHIP 1/10W JR71 1-216-296-00 SHORT 1-216-107-00 METAL CHIP 270K 1/10W 1-216-097-00 RES,CHIP 100K 1/10W < COIL > 1-216-085-00 METAL CHIP 1/10W 1-216-081-00 METAL CHIP 1/10W 1-412-058-11 INDUCTOR CHIP 10uH 1-412-058-11 INDUCTOR CHIP 10uH...
  • Page 49 Ref. No. Part No. Description Remark ************** HARDWARE LIST ************** 7-685-792-09 SCREW +PTT 2.6X6 (S) 7-685-793-09 SCREW +PTT 2.6X8 (S) 7-621-772-10 SCREW +B 2X4 7-685-106-19 SCREW +P 2X10 TYPE2 NON-SLIT 7-627-850-28 SCREW, PRECISION +P 1.4X3 7-627-000-00 SCREW, PRECISION +P 1.7X2.2 TYPE3 7-628-253-00 SCREW +PS 2X4 7-627-553-37 SCREW, PRECISION +P 2X3 TYPE3 7-627-553-17 SCREW, PRECISION +P 2X2 TYPE3...
  • Page 50 CDX-C5750/C5850 Sony Corporation 99A0419-1 9-926-417-11 Personal & Mobile Communication Company Printed in Japan C1999. 1 – 62 – Published by Quality Assurance Dept.

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