Sony XR-4750RDS Service Manual
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Sony XR-4750RDS Service Manual

Sony XR-4750RDS Service Manual

Fm/mw/lw cassette car stereo
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XR-4750RDS/C450RDS
QQ
3 7 63 1515 0
SERVICE MANUAL
Ver 1.1 2001.06
For RM-X2S (Remote Commander),
please refer to RM-X2S/X3S Service
Manual (9-960-039-S) previously issued.
TE
L 13942296513
www
.
Sony Corporation
9-925-542-12
2001F0500-1
e Vehicle Company
C 2001.6
Shinagawa Tec Service Manual Production Group
http://www.xiaoyu163.com
Photo: XR-C450RDS
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ao
u163
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i
http://www.xiaoyu163.com
2 9
8
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
FM/MW/LW CASSETTE CAR STEREO
co
.
9 4
2 8
AEP Model
UK Model
MG-25B-136
0 5
8
2 9
9 4
2 8
m
9 9
NEW
9 9

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  • Page 1 XR-4750RDS/C450RDS 3 7 63 1515 0 SERVICE MANUAL AEP Model UK Model Ver 1.1 2001.06 For RM-X2S (Remote Commander), Photo: XR-C450RDS please refer to RM-X2S/X3S Service Manual (9-960-039-S) previously issued. Model Name Using Similar Mechanism Tape Transport Mechanism Type...

  • Page 2: Table Of Contents

    http://www.xiaoyu163.com 3 7 63 1515 0 TABLE OF CONTENTS SERVICING NOTES GENERAL Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚ C during Location of Controls ............3 Setting the Clock ............... 4 repairing. •...
  • Page 3 http://www.xiaoyu163.com SECTION 1 This section is extracted 3 7 63 1515 0 from instruction manual. GENERAL L 13942296513 u163 – 3 – http://www.xiaoyu163.com...
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  • Page 10: Disassembly

    http://www.xiaoyu163.com SECTION 2 3 7 63 1515 0 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 . L 13942296513 COVER ASS’Y 3 cover ass’y...
  • Page 11 http://www.xiaoyu163.com 3 7 63 1515 0 5 screw (PTT2.6 × 6) SUB PANEL, MECHANISM DECK (MG-25B-136) 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 L 13942296513 (PTT2.6 ×...

  • Page 12: Assembly Of Mechanism Deck

    http://www.xiaoyu163.com SECTION 3 3 7 63 1515 0 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.
  • Page 13 http://www.xiaoyu163.com 3 7 63 1515 0 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.
  • Page 14 http://www.xiaoyu163.com 3 7 63 1515 0 GUIDE (C) 2 guide (C) 1 three claws L 13942296513 u163 – 14 – http://www.xiaoyu163.com...

  • Page 15: Mechanical Adjustments

    http://www.xiaoyu163.com SECTION 4 SECTION 5 3 7 63 1515 0 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS PRECAUTION TEST MODE This set have the test mode function. In the test mode, FM Auto 1. Clean the following parts with a denatured-alcohol-moistened Scan/Stop Level and AM (MW) Auto Scan/Stop Level adjustments swab: can be performed easier than it in ordinary procedure.

  • Page 16: Tuner Section

    http://www.xiaoyu163.com 3 7 63 1515 0 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.
  • Page 17 http://www.xiaoyu163.com 3 7 63 1515 0 FM Signal Meter Adjustment AM (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 antenna jack (J1) 30 Ω...
  • Page 18 http://www.xiaoyu163.com 3 7 63 1515 0 Adjustment Location: – SET UPPER VIEW – Tape Speed Adjustment RV1 AM (MW) Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV3 FM Noise Focus Adjustment RV4 FM Stereo Separation Adjustment L 13942296513 FM Signal Meter Adjustment u163...

  • Page 19: Diagrams

    http://www.xiaoyu163.com SECTION 6 3 7 63 1515 0 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...
  • Page 20 http://www.xiaoyu163.com 3 7 63 1515 0 IC151 LC75373ED – LFIN – – – LFOUT – LSELO LROUT – – – VREF SHIFT DECODER LATCH CONTROL REGISTER – – – RROUT RSELO – RFOUT – – – – RFIN 6 7 8 9 10 L 13942296513 IC351 CXA2509AQ-T4...
  • Page 21 http://www.xiaoyu163.com 3 7 63 1515 0 IC601 BA3918-V2 IC701 BA8270F-E2 (XR-C450RDS only) BUS ON BUS ON SWITCH REGULATOR RESET SWITCH BUS ON CLK IN BATTERY BATT BU IN SWITCH OVER VOLTAGE PROTECT VREF DATA IN DATA – DATA OUT 2 3 4 L 13942296513 •...
  • Page 22 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...
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  • Page 25: 6-5. Ic Pin Function Description

    3 7 63 1515 0 6-5. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 MN1884820S4G (XR-4750RDS), MN1886426S4H (XR-C450RDS) (SYSTEM CONTROLLER) Pin No. Pin Name Function TUNMUT Tuner muting control pin At muting: “H” AMPON Power amp power supply control pin...

  • Page 26: Tel 13942296513

    – A/D reference voltage input pin AVSS – – BUSON BUS ON control signai output pin (for SONY BUS) (C450RDS only) SYSRST System reset signal output pin (C450RDS only) SEKOUT SEEK control signal output pin TUNON Tuner power supply control pin...

  • Page 27: Exploded Views

    http://www.xiaoyu163.com SECTION 7 3 7 63 1515 0 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they • Abbreviation may have some difference from the original are seldom required for routine service. Some G: German one.
  • Page 28 3-009-304-01 BUTTON (RELEASE) 3-932-475-01 SPRING (RELEASE) 3-009-298-01 BUTTON (R) (PTY. AF/TA. – DISK +) (C450RDS) 3-009-314-01 BUTTON (R) (2) (PTY. AF/TS. –DISK+) (4750RDS) 3-904-194-01 EMBLEM (NO. 2.5), SONY (C450RDS) * 114 3-010-282-01 PLATE (LCD), GROUND X-3373-662-1 PANEL SUB ASSY (C450RDS)
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 (3) MECHANISM DECK SECTION (MG-25B-136) HP901 M901 L 13942296513 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...

  • Page 30: Electrical Parts List

    http://www.xiaoyu163.com SECTION 8 3 7 63 1515 0 ELECTRICAL PARTS LIST NOTE: • Items marked “*” are not stocked since they • Abbreviation • Due to standardization, replacements in the are seldom required for routine service. G: German parts list may be different from the parts speci- Some delay should be anticipated when order- fied in the diagrams or the components used on the set.
  • Page 31 http://www.xiaoyu163.com 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark LSW909 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (DSPL) LSW928 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (PTY) (C450RDS) (4750RDS: GREEN) LSW928 1-762-620-11 SWITCH, KEY BOARD (WITH LED) (PTY) LSW910 1-762-617-11 SWITCH, KEY BOARD (WITH LED) (MUTE) (C450RDS) (4750RDS: AMBER)
  • Page 32 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R928 1-216-061-00 METAL CHIP 3.3K 1/10W R970 1-216-021-00 METAL CHIP 1/10W R929 1-216-065-00 METAL CHIP 4.7K 1/10W (C450RDS) R930 1-216-069-00 METAL CHIP 6.8K 1/10W (4750RDS)
  • Page 33 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-163-809-11 CERAMIC CHIP 0.047uF 10% C215 1-164-492-11 CERAMIC CHIP 0.15uF 1-124-463-00 ELECT 0.1uF C216 1-164-492-11 CERAMIC CHIP 0.15uF 1-164-232-11 CERAMIC CHIP 0.01uF C218 1-126-157-11 ELECT...
  • Page 34 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C605 1-126-157-11 ELECT 10uF D607 8-719-801-78 DIODE 1SS184 C606 1-126-157-11 ELECT 10uF D609 8-719-422-64 DIODE MA8062-M C607 1-126-157-11 ELECT 10uF D610 8-719-422-64 DIODE MA8062-M C609 1-124-589-11 ELECT...
  • Page 35 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JC14 1-216-295-00 CONDUCTOR, CHIP (2012) JC81 1-216-296-00 CONDUCTOR, CHIP (3216) JC15 1-216-295-00 CONDUCTOR, CHIP (2012) JC16 1-216-295-00 CONDUCTOR, CHIP (2012) < COIL > JC17 1-216-295-00 CONDUCTOR, CHIP (2012)
  • Page 36 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R102 1-216-085-00 METAL CHIP 1/10W R505 1-216-049-00 METAL CHIP 1/10W R103 1-216-061-00 METAL CHIP 3.3K 1/10W R506 1-216-109-00 METAL CHIP 330K 1/10W R104 1-216-190-00 METAL CHIP...
  • Page 37 http://www.xiaoyu163.com MAIN POWER 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R583 1-216-166-00 METAL CHIP 1/8W < VIBRATOR > R584 1-216-238-00 METAL CHIP 1/8W R585 1-216-097-00 METAL CHIP 100K 1/10W 1-567-848-11 VIBRATOR, CRYSTAL (7.2MHz) R599 1-216-295-00 CONDUCTOR, CHIP (2012)
  • Page 38 http://www.xiaoyu163.com POWER 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-859-488-21 MANUAL, INSTRUCTION, INSTALL R803 1-216-049-00 METAL CHIP 1/10W (FRENCH, GERMAN, DUTCH, ITALIAN) R804 1-216-049-00 METAL CHIP 1/10W (4750RDS: AEP, G) R811 1-216-296-00 CONDUCTOR, CHIP (3216)
  • Page 39 XR-4750RDS/C450RDS 3 7 63 1515 0 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.
  • Page 40 XR-4750RDS/C450RDS 3 7 63 1515 0 DIAGRAMS 2-1. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF •...
  • Page 41 • Semiconductor Location (C450RDS) Ref. No. Location (C450RDS) CN701 CNJ150 BUS CONTROL IN BUS AUDIO LINE OUT (FOR SONY BUS) REAR G-14 (ORIGINAL SERVICE MANUAL Page 24) (ORIGINAL SERVICE MANUAL Page 24) D150 POWER BOARD POWER BOARD D151 CN803 CN802...
  • Page 42 XR-4750RDS/C450RDS 3 7 6 3 1 5 1 5 0 2-3. SCHEMATIC DIAGRAM – MAIN Board (1/3) – (C450RDS) 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...
  • Page 43 XR-4750RDS/C450RDS 3 7 6 3 1 5 1 5 0 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...
  • Page 44 R702 D605 C610 R607 470k BATTERY MA8056-M CHECK D701 D702 MA8180-M DTZ7.5C R603 C612 (C450RDS) CN701 BUS CONTROL IN (FOR SONY BUS) R708 JC33 R704 UNISI 100k UNISO JC34 BUS.ON B.DATA w w w UNICLK B.CLK BUSON JC35 JC79 D703...
  • Page 45 XR-4750RDS/C450RDS 3 7 63 1515 0 MAIN 3. ELECTRICAL PARTS LIST NOTE: • Items marked “*” are not stocked since they • Due to standardization, replacements in the 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 46 XR-4750RDS/C450RDS MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C302 1-163-263-11 CERAMIC CHIP 330PF C704 1-164-004-11 CERAMIC CHIP 0.1uF C303 1-163-263-11 CERAMIC CHIP 330PF (C450RDS) C304 1-163-021-11 CERAMIC CHIP 0.01uF...
  • Page 47 XR-4750RDS/C450RDS 3 7 63 1515 0 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D706 8-719-422-64 DIODE MA8062-M (C450RDS) JC59 1-216-296-00 CONDUCTOR, CHIP JC60 1-216-296-00 CONDUCTOR, CHIP < IC > JC62 1-216-296-00 CONDUCTOR, CHIP...
  • Page 48 XR-4750RDS/C450RDS MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-017-00 METAL CHIP 1/10W R365 1-216-065-00 METAL CHIP 4.7K 1/10W R403 1-216-077-00 METAL CHIP 1/10W 1-216-077-00 METAL CHIP 1/10W 1-216-075-00 METAL CHIP...
  • Page 49 XR-4750RDS/C450RDS 3 7 63 1515 0 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R574 1-216-097-00 METAL CHIP 100K 1/10W X501 1-579-125-11 VIBRATOR, CERAMIC (8MHz) (4750RDS) X502 1-567-098-41 VIBRATOR, CRYSTAL (32.768kHz) R582 1-216-198-00 METAL CHIP...
  • Page 50 XR-4750RDS/C450RDS 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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