Sony XR-4740RDS Service Manual
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Sony XR-4740RDS Service Manual

Fm/mw/lw cassette car stereo
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XR-4740RDS/C430RDS/C440RDS
SERVICE MANUAL
Ver 1.1 2001.06
For RM-X2S (Remote Commander),
please refer to RM-X2S/X3S Service
Manual (9-960-039-∏) previously issued.
(XR-C440RDS ONLY)
Cassette player section
Tape track
4-track 2-channel stereo
Wow and flutter
0.08% (WRMS)
Frequency response
30 – 18,000 Hz
Signal-to-noise ratio
Tuner section
FM
Tuning range
87.5 – 108.0 MHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
70 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo),
0.3% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
Capture ratio
4 dB
MW/LW
Tuning range
MW: 531 – 1,602 kHz
LW: 153 – 281 kHz
Antenna terminal
External antenna connector
Intermediate frequency
10.71 MHz/450 kHz
MW: 30 µV
Sensitivity
LM: 50 µV
Sony Corporation
9-925-541-12
2001F0500-1
e Vehicle Company
C 2001.6
Shinagawa Tec Service Manual Production Group
Photo: XR-C430RDS
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Power amplifier section
Outputs
Speaker impedance
Maximum power output 35 W × 4 (at 4 ohms)
General
Outputs
(XR-C430RDS/C440RDS):
Tone controls
Power requirements
Dimensions
Mounting dimensions
Mass
Supplied accessories
Design and specifications are subject to change without notice.
FM/MW/LW CASSETTE CAR STEREO
AEP Model
UK Model
MG-25B-136
Speaker outputs
(sure seal connectors)
4 – 8 ohms
Power amplifier control lead
Rear line out (1)
Bass ± 8 dB at 100 Hz
Treble ± 8 dB at 10 kHz
12 V DC car battery (negative ground)
Approx. 188 × 58 × 181 mm (w/h/d)
Approx. 182 × 53 × 164 mm (w/h/d)
Approx. 1.2 kg
Parts for installation and connections (1 set)
Front panel case (1)
XR-C440RDS: Rotary commander RM-X2S
– Continued on next page –
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  • Page 1 XR-4740RDS/C430RDS/C440RDS SERVICE MANUAL AEP Model UK Model Ver 1.1 2001.06 Photo: XR-C430RDS For RM-X2S (Remote Commander), Model Name Using Similar Mechanism please refer to RM-X2S/X3S Service Tape Transport Mechanism Type MG-25B-136 Manual (9-960-039-∏) previously issued. (XR-C440RDS ONLY) SPECIFICATIONS Cassette player section...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SERVICING NOTES Flexible Circuit Board Repairing GENERAL • Keep the temperature the soldering iron around 270° C during Location of Controls ............3 repairing. Setting the Clock ............... 3 • Do not touch the soldering iron on the same conductor of the Using the rotary remote .............
  • Page 3 SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
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  • Page 9: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. FRONT PANEL ASS’Y 1 Push the button (release). 2 Remove the front panel ass’y to the direction of the arrow A . COVER ASS’Y 3 cover ass’y –...
  • Page 10 SUB PANEL, MECHANISM DECK (MG-25B-136) 5 screw (PTT2.6 × 6) 3 connector (CN302) 6 mechanism deck (MG-25B-136) 4 flexible flat cable (CN301) 2 sub panel 1 three screws (PTT2.6 × 8) 1 three screws (PTT2.6 × 8) 4 seven screws MAIN BOARD, HEAT SINK (PTT2.6 ×...

  • Page 11: Assembly Of Mechanism Deck

    SECTION 3 ASSEMBLY OF MECHANISM DECK Note: Follow the assembly procedure in the numerical order given. HOUSING 7 Hold the hanger by bending the claw. 5 Fit projection on C part. 2 Install the hanger onto 1 Install the catch to the hanger. two claws of the housing.
  • Page 12 LEVER (LDG-A) / (LDG-B) shaft A shaft A shaft B shaft C shaft C 1 Fit the lever (LDG-A) on 4 type-E stop ring 2.0 shafts A – C and install it. 2 Pull the lever in the arrow direction. 3 Fit the lever (LDG-B) on shafts A and C and install it.
  • Page 13 GUIDE (C) 2 guide (C) 1 three claws – 13 –...

  • Page 14: Mechanical Adjustments

    SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 1. Clean the following parts with a denatured-alcohol-moistened TEST MODE swab: This set have the test mode function. In the test mode, FM Auto playback head pinch roller Scan/Stop Level and AM (MW) Auto Scan/Stop Level adjustments rubber belt capstan can be performed easier than it in ordinary procedure.

  • Page 15: Tuner Section

    FM Stereo Separation Adjustment TUNER SECTION 0dB=1µV Setting: SOURCE button: FM Cautions during repair When the tuner unit is defective, replace it by a new one because FM RF signal level meter antenna jack (J1) generator its internal block is difficult to repair. 0.01 µ...
  • Page 16 FM Signal Meter Adjustment MW Auto Scan/Stop Level Adjustment Setting: Make this adjustment after “FM Auto Scan/Stop Level Adjustment”. SOURCE button: FM Setting: SOURCE button: MW FM RF signal generator 30 Ω 15 pF antenna jack (J1) 0.01 µ F 65 pF Carrier frequency : 98.00 MHz MW RF signal...
  • Page 17 Adjustment Location: Tape Speed – SET UPPER VIEW – Adjustment RV1 MW Auto Scan/Stop level Adjustment RV2 FM Auto Scan/Stop level Adjustment RV3 FM Noise Focus Adjustment RV4 FM Stereo separation Adjustment FM Signal Meter Adjustment – 17 –...

  • Page 18: Diagrams

    SECTION 6 DIAGRAMS • IC Block Diagrams – MAIN Section – IC1 TB2114F (EL) 24 23 21 20 14 13 RIPPLE FILTER – – SEEK/RECP SEEK/RECP 4BIT SWALLOW MODULAS COUNTER PRESCALER 12BIT PHASE PROGRAMABLE COMPARATOR COUNTER REFERENCE 40BIT 18BIT 20BIT COUNTER SHIFT 22BIT...
  • Page 19 IC151 LC75373ED – LFIN – – – LFOUT – LSELO LROUT – – – VREF SHIFT DECODER LATCH CONTROL REGISTER – – – RROUT RSELO – RFOUT – – – – RFIN 6 7 8 9 10 IC351 CXA2509AQ-T4 24dB 120µ/70µ...
  • Page 20 IC360 MM1322XFBE 8 OUT2 OUT1 IC601 BA3918-V2 REGULATOR OVER VOLTAGE PROTECT – 2 3 4 IC701 BA8270F-E2 BUS ON BUS ON SWITCH RESET SWITCH BUS ON CLK IN BATTERY BATT BU IN SWITCH VREF DATA DATA IN DATA OUT – 20 –...
  • Page 21 • Waveforms 1 IC1 @¢ XI 3 IC501 8 X_IN 752 mVp-p 3.08 Vp-p 138 nsec 124 nsec 2 IC3 !º XI 4 IC501 !¡ XT_IN 2.68 Vp-p 2.2 Vp-p 30.4 µ sec 230 nsec – 21 –...
  • Page 25 6-5. IC PIN FUNCTION DESCRIPTION MAIN BOARD IC501 MN1884820S4G (4740RDS) (MASTER CONTROLLER) IC501 MN1886426S4H (C430RDS/C440RDS) (MASTER CONTROLLER) Pin No. Pin Name Function TUNMUT Tuner muting control pin At muting: “H” AMPON Power amp power supply control pin Illumination power supply control pin ILLON At PW SEL on: ACC on: “H”...
  • Page 26 A/D reference voltage input pin (connected to GND in this set) AVSS – – BUSON BUS ON control signai output pin (for SONY BUS) (C430RDS/C440RDS only) SYSRST System reset signal output pin (for SONY BUS) (C430RDS/C440RDS only) SEKOUT SEEK control signal output pin...

  • Page 27: Exploded Views

    SECTION 7 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they may have some difference from the original are seldom required for routine service. Some number in the exploded views are not sup- one.
  • Page 28 (2) FRONT PANEL SECTION not supplied (KEY board) LCD901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-010-396-01 KNOB (D-BASS) 3-010-387-01 BUTTON (PRESET) 3-010-398-01 BUTTON (RELEASE) (6 . 1. 2. 3. 4. 5. 6. DSPL) 3-010-395-01 SPRING (RELEASE) 3-010-388-01 BUTTON (P.
  • Page 29 (3) MECHANISM DECK SECTION (MG-25B-136) HP901 M901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3291-667-A CLUTCH (FR) ASSY 3-008-874-02 CATCHER 3-701-437-21 WASHER 3-933-344-01 GUIDE (C) * 203 3-008-883-01 LEVER (LDG-A) 3-927-100-01 SCREW (+PS 2X10), SPECIAL * 204 3-008-884-01 LEVER (LDG-B) 3-364-151-01 WASHER...

  • Page 30: Electrical Parts List

    SECTION 8 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • SEMICONDUCTORS When indicating parts by reference In each case, u: µ, for example: number, please include the board. parts list may be different from the parts speci- fied in the diagrams or the components used on uA.
  • Page 31 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark LSW908 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (+) LSW926 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (ATA 5) (4740RDS: GRN) (C440RDS) LSW908 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (+) (C440RDS) LSW927 1-762-617-11 SWITCH, KEY BOARD (WITH LED) (4) (4740RDS: AMB/C430RDS) LSW909 1-762-617-11 SWITCH, KEY BOARD (WITH LED) (MUTE)
  • Page 32 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > R965 1-216-037-00 METAL CHIP 1/10W (4740RDS: AMB/C430RDS/C440RDS) R901 1-216-045-00 METAL CHIP 1/10W R902 1-216-045-00 METAL CHIP 1/10W R966 1-216-033-00 METAL CHIP 1/10W R903 1-216-045-00 METAL CHIP 1/10W (C440RDS) R904...
  • Page 33 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CAPACITOR > C123 1-163-251-11 CERAMIC CHIP 100PF (C430RDS/C440RDS) 1-163-235-11 CERAMIC CHIP 22PF C124 1-126-096-11 ELECT 10uF 1-163-009-11 CERAMIC CHIP 0.001uF 10% (C430RDS/C440RDS) 1-126-157-11 ELECT 10uF C151 1-107-823-11 CERAMIC CHIP 0.47uF 1-126-157-11 ELECT...
  • Page 34 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C367 1-126-934-11 ELECT 220uF < JACK > C401 1-163-009-11 CERAMIC CHIP 0.001uF 10% CNJ150 1-774-699-12 JACK, PIN 4P (LINE OUT/BUS AUDIO IN) C402 1-163-263-11 CERAMIC CHIP 330PF (C430RDS/C440RDS) C403 1-163-263-11 CERAMIC CHIP...
  • Page 35 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC351 8-752-079-78 IC CXA2509AQ-T4 JC56 1-216-296-00 CONDUCTOR, CHIP (3216) IC360 8-759-395-97 IC MM1322XFBE JC57 1-216-296-00 CONDUCTOR, CHIP (3216) IC501 8-759-451-03 IC MN1884820S4G (4740RDS) (C430RDS/C440RDS) IC501 8-759-451-04 IC MN1886426S4H (C430RDS/C440RDS) JC58 1-216-296-00 CONDUCTOR, CHIP (3216)
  • Page 36 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q606 8-729-027-23 TRANSISTOR DTA114EKA-T146 R212 1-216-129-00 METAL CHIP 2.2M 1/10W Q608 8-729-027-23 TRANSISTOR DTA114EKA-T146 R213 1-216-129-00 METAL CHIP 2.2M 1/10W Q609 8-729-015-11 TRANSISTOR 2SD1802FAST-TL R218 1-216-061-00 METAL CHIP 3.3K 1/10W Q610...
  • Page 37 MAIN POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R534 1-216-246-00 METAL GLAZE 100K 1/8W R615 1-208-806-11 METAL GLAZE 0.5% 1/10W R535 1-208-518-41 METAL GLAZE 1/10W (C430RDS) R616 1-216-295-00 CONDUCTOR, CHIP (2012) R617 1-216-025-00 METAL GLAZE 1/10W R535 1-208-814-11 METAL GLAZE...
  • Page 38 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C804 1-124-589-11 ELECT 47uF MISCELLANEOUS C805 1-136-165-00 FILM 0.1uF ************** C806 1-164-506-11 CERAMIC CHIP 4.7uF 1-777-989-21 CORD (WITH CONNECTOR) (AMP REM) C811 1-163-009-11 CERAMIC CHIP 0.001uF 10% (C430RDS/C440RDS) C812 1-163-009-11 CERAMIC CHIP...
  • Page 39 Ref. No. Part No. Description Remark 7-685-106-19 SCREW +P 2X10 TYPE2 NON-SLIT 7-624-104-04 STOP RING 2.0, TYPE -E 7-627-553-17 PRECISION SCREW +P 2X2 TYPE 3 ************************************************************ PARTS FOR INSTALLATION AND CONNECTIONS ************************************** 3-916-161-31 FRAME ASSY X-3370-077-1 SCREW ASSY (AE.KEY), FITTING 3-386-828-01 SCREW, FITTING 3-349-410-01 BUSHING 3-388-078-01 KEY...
  • Page 40 MEMO – 50 –...
  • Page 41 XR-4740RDS/C430RDS/C440RDS AEP Model UK Model SERVICE MANUAL Ver 1.1 2001.06 SUPPLEMENT-1 File this supplement with the service manual. Subject: MAIN Board Modification (SPM-01012) In this set, following board has been changed in the midway of production. NEW/FORMER TYPE DISCRIMINATION – MAIN Board (Component Side) –...
  • Page 42 XR-4740RDS/C430RDS/C440RDS DIAGRAMS 2-1. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS 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 43 • Semiconductor (C430RDS/C440RDS) Location (C430RDS/C440RDS) CN701 CNJ150 BUS CONTROL IN Ref. No. Location BUS AUDIO LINE OUT (FOR SONY BUS) REAR (ORIGINAL SERVICE MANUAL Page 24) (ORIGINAL SERVICE MANUAL Page 24) POWER BOARD POWER BOARD G-14 CN803 CN802 FM/AM J501...
  • Page 44 XR-4740RDS/C430RDS/C440RDS 2-3. SCHEMATIC DIAGRAM – MAIN Board (1/3) – (C430RDS/C440RDS) FM/AM TUNER UNIT CNJ150 BUS AUDIO IN LINE OUT REAR C124 R118 R151 C151 C153 25V 3.3k 4.7k 0.47 0.022 R119 C123 C122 C222 C103 R101 C102 C152 100p 100p...
  • Page 45 XR-4740RDS/C430RDS/C440RDS 2-4. SCHEMATIC DIAGRAM – MAIN Board (2/3) – (Page 4) C408 C308 R408 JC58 R351 R305 C305 R307 C309 330k 0.22 2.2k 1000p C410 2200p R303 R308 C310 JC18 2200p JC17 HP901 R407 (PLAYBACK) 2.2k R306 C304 0.01 C301...
  • Page 46 C701 R702 D605 C610 R607 470k BATTERY MA8056-M D701 CHECK D702 MA8180-M DTZ7.5C R603 C612 (C430RDS/C440RDS) CN701 BUS CONTROL IN (FOR SONY BUS) R708 JC33 R704 UNISI 100k UNISO JC34 BUS.ON B.DATA UNICLK B.CLK BUSON JC35 JC79 D703 MA8062-H R705...
  • Page 47 XR-4740RDS/C430RDS/C440RDS MAIN 3. ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference number, please include the board. parts list may be different from the parts speci- are seldom required for routine service.
  • Page 48 XR-4740RDS/C430RDS/C440RDS MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C221 1-124-233-11 ELECT 10uF C222 1-163-251-11 CERAMIC CHIP 100PF C701 1-163-037-11 CERAMIC CHIP 0.022uF (C430RDS/C440RDS) (C430RDS/C440RDS) C223 1-163-251-11 CERAMIC CHIP 100PF C702 1-165-319-11 CERAMIC CHIP 0.1uF...
  • Page 49 XR-4740RDS/C430RDS/C440RDS MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D703 8-719-422-67 DIODE MA8062-H (C430RDS/C440RDS) D704 8-719-422-64 DIODE MA8062-M (C430RDS/C440RDS) JC56 1-216-296-00 CONDUCTOR, CHIP D705 8-719-422-64 DIODE MA8062-M (C430RDS/C440RDS) JC57 1-216-296-00 CONDUCTOR, CHIP (C430RDS/C440RDS) D706 8-719-422-64 DIODE MA8062-M (C430RDS/C440RDS)
  • Page 50 XR-4740RDS/C430RDS/C440RDS MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-065-00 METAL CHIP 4.7K 1/10W R363 1-249-389-11 CARBON 1/4W 1-216-073-00 METAL CHIP 1/10W R364 1-216-073-00 METAL CHIP 1/10W 1-216-097-00 METAL CHIP 100K 1/10W R365 1-216-065-00 METAL CHIP 4.7K...
  • Page 51 XR-4740RDS/C430RDS/C440RDS MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R574 1-216-097-00 METAL CHIP 100K 1/10W (4740RDS) R582 1-216-198-00 METAL CHIP 1/8W R583 1-216-166-00 METAL CHIP 1/8W R584 1-216-238-00 METAL CHIP 1/8W R585 1-216-097-00 METAL CHIP...
  • Page 52 XR-4740RDS/C430RDS/C440RDS 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 2001.06...

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