Sony XR-4950X Service Manual
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Sony XR-4950X Service Manual

Sony XR-4950X Service Manual

Fm/mw/sw cassette car stereo
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3 7 63 1515 0
SERVICE MANUAL
Ver 1.1 2001.05
TE
L 13942296513
www
.
Sony Corporation
9-870-103-12
2001E0500-1
e Vehicle Company
C 2001.5
Shinagawa Tec Service Manual Production Group
http://www.xiaoyu163.com
XR-4950X/4954X
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
Photo: XR-4950X
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
FM/MW/SW CASSETTE CAR STEREO
co
.
9 4
2 8
E Model
MG-25F-136
0 5
8
2 9
9 4
2 8
m
9 9
XR-C5100
9 9

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  • Page 1 XR-4950X/4954X 3 7 63 1515 0 SERVICE MANUAL E Model Ver 1.1 2001.05 Photo: XR-4950X Model Name Using Similar Mechanism XR-C5100 Tape Transport Mechanism Type MG-25F-136 SPECIFICATIONS L 13942296513 FM/MW/SW CASSETTE CAR STEREO u163 Sony Corporation 9-870-103-12 2001E0500-1 e Vehicle Company C 2001.5...

  • Page 2: Table Of Contents

    http://www.xiaoyu163.com 3 7 63 1515 0 TABLE OF CONTENTS Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚C dur- ing repairing. 1. SERVICE NOTE ............. 2 • Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

  • Page 3: General

    http://www.xiaoyu163.com SECTION 2 This section is extracted from instruction manual. GENERAL 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
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  • Page 12 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 13: Disassembly

    http://www.xiaoyu163.com SECTION 3 DISASSEMBLY 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. SUB PANEL, MECHANISM DECK (MG-25F-136) 0 Mechanism deck 9 Screw (MG-25F-136) (PTT2.6 × 6) 8 Connector(CN351) 7 Flexible flat cable (CNP301) 5 Sub panel ass'y 3 Screw (PTT2.6 ×...

  • Page 14: Assembly Of Mechanism Deck

    http://www.xiaoyu163.com SECTION 4 ASSEMBLY OF MECHANISM DECK 3 7 63 1515 0 Note: Follow the assembly procedure in the numerical order given. HOUSING 7 Holder the hanger by bending the claw. 5 Fit projection on C part. 1 Install the catch to the hanger. 2 Install the hanger onto two claws of the housing.
  • Page 15 http://www.xiaoyu163.com 3 7 63 1515 0 LEVER (LDG-A)/(LDG-B) shaft A shaft A shaft B shaft B shaft C 1 Fit the lever (LDG-A) on shafts A – C and install it. 3 type-E stop ring 2.0 2 Fit the lever (LDG-B) on shafts A and B and install it.
  • Page 16 http://www.xiaoyu163.com 3 7 63 1515 0 GUIDE (C) 2 guide (C) 1 three claws L 13942296513 MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901) two precision screws (P2 × 2) capstan/reel motor (M901) u163 30˚ http://www.xiaoyu163.com...

  • Page 17: Mechanical Adjustments

    XR-4950X/4954X SECTION 5 SECTION 6 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 3 7 6 3 1 5 1 5 0 6-1. TEST MODE 1. Clean the following parts with a denatured-alcohol-moistened Adjustment Location: swab: <Set the Test Mode> playback head pinch roller 1.

  • Page 18: Diagrams

    XR-4950X/4954X SECTION 7 DIAGRAMS 3 7 6 3 1 5 1 5 0 7-1. BLOCK DIAGRAMS – TUNER/TAPE/MAIN SECTION – INPUT SELECT, ELECTRICAL VOLUME J331 STEREO DECODER IC331 TU8V BU+B TU5V AUDIO OUT (REAR) LOUDNESS VOLUME TONE SE1L SOFT...

  • Page 19: Display/Key Control/Bus Control/Power Supply Section

    XR-4950X/4954X – DISPLAY/KEY CONTROL/BUS CONTROL/POWER SUPPLY SECTION – 3 7 6 3 1 5 1 5 0 MASTER MICRO COMPUTER LIQUID CRYSTAL DISPLAY DRIVER IC501 (3/3) IC901 J561 FP+B REMOTE IN DATA-LCD RC-IN1 LCD SO LSW901 – 904, 906, 907, 909 CLK-LCD LSW912 –...
  • Page 20 XR-4950X/4954X 3 7 6 3 1 5 1 5 0 WAVEFORMS THIS NOTE IS COMMON FOR PRINTED WIRING – MAIN BOARD – BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) 1.1Vp-p For schematic diagrams.

  • Page 21: Printed Wiring Board - Main Board

    XR-4950X/4954X 3 7 6 3 1 5 1 5 0 7-2. PRINTED WIRING BOARD – MAIN BOARD – AUDIO (REAR) J561 • Semiconductor (FM/AM ANTENNA) F781 REMOTE IN Location Ref. No. Location D-12 D351 H-11 D352 G-12 D501 D551...

  • Page 22: Schematic Diagram - Main Board (1/2)

    XR-4950X/4954X 7-3. SCHEMATIC DIAGRAM – MAIN BOARD (1/2) – • See page 20 for Waveforms. 3 7 6 3 1 5 1 5 0 • See page 21 for Printed Wiring Board. • See page 26 for IC Block Diagrams.

  • Page 23: Schematic Diagram - Main Board (2/2)

    XR-4950X/4954X 7-4. SCHEMATIC DIAGRAM – MAIN BOARD (2/2) – • See page 21 for Printed Wiring Board. 3 7 6 3 1 5 1 5 0 • See page 26 for IC Block Diagrams. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 24: Printed Wiring Boards - Key/Sub Boards

    XR-4950X/4954X SUB BOARD CNP801 7-5. PRINTED WIRING BOARDS – KEY/SUB BOARDS – 3 7 6 3 1 5 1 5 0 A SIDE 1 2 3 4 5 6 7 14 13 12 11 10 9 8 • Semiconductor Location Ref.

  • Page 25: Schematic Diagrams - Key/Sub Boards

    XR-4950X/4954X 3 7 6 3 1 5 1 5 0 7-6. SCHEMATIC DIAGRAMS – KEY/SUB BOARDS – • See page 20 for Waveform. 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3...

  • Page 26: Ic Block Diagrams

    XR-4950X/4954X 3 7 6 3 1 5 1 5 0 7-7. IC BLOCK DIAGRAMS IC331 TDA7402TR IC301 CXA2509AQ-T4 IC351 LB1930M-TLM 33 32 31 24 23 BUFFER OUT1 MOTOR MIXER CONTROL DRIVE 24dB CIRCUIT CIRCUIT OUT2 120µ/70µ MONO- MONO- MONO-...

  • Page 27: Ic Pin Function

    http://www.xiaoyu163.com 3 7 63 1515 0 7-8. IC PIN FUNCTION • IC501 MASTER MICRO COMPUTER (MN101C49KTA) (MAIN Board) Pin No. Pin Name Function Reference voltage (– side) of AD conversion Connect to power ground if no problems VREF — such as noise FM/AM common signal meter A/D conversion input terminal AM (MW:SW:LW), FM S meter voltage detection terminal FM AGC A/D conversion input terminal...
  • Page 28 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Function Key input acknowledge Acknowledge signal input terminal to accept the function and eject key from the power off state The A/D conversion input power supply is off to save power in the power off state, and KEYACK key inputs cannot be accepted by A/D This terminal can therefore determine if function keys have been pressed even in the...
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 Pin Name Function Pin No. Serial clock input UNICLI UNI-LINK serial interface clock input terminal Serial data output UNISO UNI-LINK serial interface data output terminal Serial data input UNISI UNI-LINK serial interface data input terminal Serial clock output UNICKO UNI-LINK serial interface clock output terminal...
  • Page 30 http://www.xiaoyu163.com 3 7 63 1515 0 Pin Name Function Pin No. EEPROM communication terminal E2P_SIO EEPROM data input/output terminal EEPROM communication terminal E2P_CKO EEPROM clock output terminal Not used AM filter control terminal Outputs “L”during 2.94 to 5.585, 14.125 to 18.135 MHz during SW reception, and SWSHIFT outputs “H”...
  • Page 31 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Function DAVSS NS_MASK Not used DAVDD L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 32: Exploded Views

    http://www.xiaoyu163.com 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 may have some difference from the original are seldom required for routine service. Some one.
  • Page 33 http://www.xiaoyu163.com 3 7 63 1515 0 (2) FRONT PANEL SECTION not supplied (KEY board) LCD901 L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-040-980-01 BUTTON (SOURCE) * 61 3-041-371-02 SHEET (REFLECTOR) 3-040-981-11 KNOB (VOL) * 62 3-040-993-01 PLATE (LCD), LIGHT GUIDE 3-041-005-11 BUTTON (D)
  • Page 34 http://www.xiaoyu163.com 3 7 63 1515 0 (3) MECHANISM DECK SECTION (MG-25F-136) HP901 M901 L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3291-667-A CLUTCH (FR) ASSY 3-933-346-01 CATCHER * 152 3-019-130-01 LEVER (LDG-A) 3-933-344-01 GUIDE (C) * 153 3-019-131-01 LEVER (LDG-B) 3-014-798-01 SCREW (HEAD), SPECIAL...

  • Page 35: Electrical Parts List

    http://www.xiaoyu163.com SECTION 9 MAIN 3 7 63 1515 0 ELECTRICAL PARTS LIST Note: • Due to standardization, replacements in the parts • SEMICONDUCTORS When indicating parts by reference list may be different from the parts specified in In each case, u: µ , for example: number, please include the board uA...: µ...
  • Page 36 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C332 1-163-017-00 CERAMIC CHIP 0.0047uF 5% < CONNECTOR > C333 1-163-021-11 CERAMIC CHIP 0.01UF 10.00% 50V CN301 1-766-260-11 CONNECTOR, FFC/FPC (ZIF) 7P C335 1-124-233-11 ELECT 10UF...
  • Page 37 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < JACK > < RESISTOR > 1-764-808-21 JACK (FM/AM ANTENNA) 1-216-025-00 RES-CHIP 1/10W J331 1-774-698-11 JACK, PIN 2P 1-216-025-00 RES-CHIP 1/10W (BUS AUDIO IN, AUDIO OUT REAR) 1-216-295-00 SHORT J561...
  • Page 38 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R509 1-216-065-00 RES-CHIP 4.7K 1/10W R587 1-216-073-00 METAL CHIP 1/10W R510 1-216-025-00 RES-CHIP 1/10W R588 1-216-097-00 RES-CHIP 100K 1/10W R511 1-216-073-00 METAL CHIP 1/10W R589 1-216-085-00 METAL CHIP...
  • Page 39 http://www.xiaoyu163.com 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > R913 1-216-647-11 METAL CHIP 0.5% 1/10W R914 1-216-647-11 METAL CHIP 0.5% 1/10W CN901 1-794-065-21 PLUG, CONNECTOR 14P R915 1-216-651-11 METAL CHIP 0.5% 1/10W <...
  • Page 40 XR-4950X/4954X Ver 1.1 2001.05 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ************** HARDWARE LIST ************** 7-621-772-20 SCREW +B2X5 7-685-792-09 SCREW +PTT 2.6X6 (S) 7-685-793-01 SCREW +PTT 2.6X8 (S) 7-685-647-11 SCREW +BVTP 3X10 TYPE2 N-S 7-685-791-01 SCREW +PTT 2.6X5 (S)
  • Page 41 XR-4950X/4954X 3 7 63 1515 0 MEMO L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 42 XR-4950X/4954X 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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