Sony XR-1800R Service Manual
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Sony XR-1800R Service Manual

Sony XR-1800R Service Manual

Fm/mw/lw cassette car stereo
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XR-1800R
SERVICE MANUAL
AEP Model
UK Model
Model Name Using Similar Mechanism
XR-1800
Tape Transport Mechanism Type
MG-36SZ9-32
SPECIFICATIONS
FM/MW/LW CASSETTE CAR STEREO
MICROFILM

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Summary of Contents for Sony XR-1800R

  • Page 1 XR-1800R SERVICE MANUAL AEP Model UK Model Model Name Using Similar Mechanism XR-1800 Tape Transport Mechanism Type MG-36SZ9-32 SPECIFICATIONS FM/MW/LW CASSETTE CAR STEREO MICROFILM...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚C dur- ing repairing. GENERAL • Do not touch the soldering iron on the same conductor of the Button Locations ............. 3 circuit board (within 3 times). Setting the Clock .............
  • Page 3 SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
  • Page 4 – 4 –...
  • Page 5 – 5 –...
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  • Page 7 – 7 –...

  • Page 8: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. COVER ASS’Y 3 cover ass’y MECHANISM DECK BLOCK 1 two screws 1 two screws (PTT2.6 × 6) (PTT2.6 × 6) 2 connector 3 mechanism deck block (CN901) –...
  • Page 9 MAIN BOARD, HEAT SINK 4 five screws (PTT2.6 × 8) 2 two screws 1 two screws (ground point) (PTT2.6 × 6) 5 heat sink 3 main board MECHANISM DECK (MG-36SZ9-32) 3 mechanism deck (MG-36SZ9-32) 2 bracket (MD) 1 two screws 1 two screws (P2.6 ×...
  • Page 10 MOTOR ASS’Y (CAPSTAN/REEL) (M901) 2 belt 2 belt 1 two screws (P2 × 3) 3 motor ass’y (CAPSTAN/REEL) (M901) CASSETTE HANGER (X) 1 Remove the claw toward direction. 4 two claws 5 cassette hanger (x) 3 boss 3 boss 2 Remove the return link toward direction.
  • Page 11 CASSETTE HOLDER (X) 2 Removal the cassette holder (x) to direction of the arrow. 1 Push an arrow A part. – 11 –...

  • Page 12: Mechanical Adjustments

    SECTION 3 SECTION 4 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 1. Clean the following parts with a denatured-alcohol-moistened TAPE DECK SECTION 0 dB= 0.775 V swab: playback head pinch roller 1. The adjustments should be performed in the order given in rubber belt capstan this service manual.

  • Page 13: Tuner Section

    4. Repeat the above adjustment for the REV PB mode. TUNER SECTION 5. Check that output level difference between FWD PB mode and REV PB mode is within 4 dB. 0 dB=1 µV Adjustment Location: PB head Cautions during repair When the tuner unit is defective, replace it by a new one be- cause its internal block is difficult to repair.
  • Page 14 FM Noise Focus Adjustment FM Signal Meter Adjustment Setting: Setting: [TUNER] [TUNER] button: FM1 button: FM1 FM RF signal FM RF signal level meter antenna jack (CN900) generator generator antenna jack (CN900) 0.01 µ F 0.01 µ F 4 Ω –...
  • Page 15 MW Auto Scan/Stop Level Adjustment Setting: [TUNER] button: MW 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω ) antenna jack (CN900) Carrier frequency : 999 kHz 30% amplitude modulation by 1 kHz signal : 33 dB (44.7 µ...
  • Page 16 Adjustment Location: – SET UPPER VIEW – Tape Speed Adjustment TU100 RV1 MW Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV3 FM Noise Focus Adjustment RV4 FM Stereo Separation Adjustment CN901 RV100 FM Signal Meter Adjustment – SET BOTTOM VIEW – TP101 (SD) –...

  • Page 17: Diagrams

    SECTION 5 DIAGRAMS 5-1. NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM Note on Schematic Diagram: Note on Printed Wiring Board: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF •...
  • Page 18 • Waveforms – MAIN Board – – KEY Board – 1 IC1 8 (X IN) 1 IC900 ^º (OSC) 2.4 Vp-p 3.2 Vp-p 125 ns 26.6 µ s 2 IC1 !¡ (XT IN) 2 Vp-p 30.5 µ s 3 IC121 @º (XO) 3.7 Vp-p 139 ns 4 IC150 0 (XI)

  • Page 19: Printed Wiring Board - Main Section

    XR-1800R 5-2. PRINTED WIRING BOARD – MAIN Section – • Semiconductor Location Ref. No. Location D100 D350 D351 D501 D502 D550 D600 D601 D602 D603 D604 D605 D606 D607 D608 D609 D610 IC50 IC120 IC121 IC150 IC350 IC450 IC500 Q100...
  • Page 20 XR-1800R 5-3. SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 18 for Waveforms. • See page 29 for IC Block Diagrams. – 21 – – 22 –...
  • Page 21 XR-1800R 5-4. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 18 for Waveforms. • See page 29 for IC Block Diagrams. (Page 27) – 23 – – 24 –...

  • Page 22: Printed Wiring Board - Panel Section

    XR-1800R 5-5. PRINTED WIRING BOARD – PANEL Section – (Page 19) • Semiconductor Location Ref. No. Location D900 D901 D902 D903 D904 IC900 – 25 – – 26 –...
  • Page 23 XR-1800R 5-6. SCHEMATIC DIAGRAM – PANEL Section – • See page 18 for Waveform. (Page 24) – 27 – – 28 –...
  • Page 24 • IC Block Diagrams – MAIN Board – IC121 LC7216M 13 12 11 PHASE DETECTOR CHARGE PUMP UNIVERSAL COUNTER SWALLOW 12BIT REFERENCE COUNTER PROGRAMMABLE DIVIDER 1/16, 1/17 4BIT DIVIDER SHIFT REGISTER LATCH IC150 TDA7330BD-013TR 15 14 PHASE DIFF COSTAS 2nd ORDER 8th ORDER DECODER DECODER...
  • Page 25 IC450 LC75372E ROUT RVREF RVREF RVREF RVREF – – – RFIN TEST RVREF RVREF RFOUT – RROUT – SHIFT LATCH DECODER CONTROL REGISTER RVREF RVREF VREF RVREF LVREF – LVREF LVREF LROUT – LFOUT LVREF LVREF LFIN LVREF LVREF LVREF LVREF LOUT –...

  • Page 26: 5-7. Ic Pin Function Description

    5-7. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC1 MN1884820SF (SYSTEM CONTROLLER) Pin No. Pin Name Function TUNMUT FM audio signal muting control output terminal “H”: muting on AMPON Standby control signal output to the power amplifier (IC500) “L”: standby Power supply on/off control signal output terminal at the illumination and liquid crystal display ILLON driver (IC900) “H”: power on...
  • Page 27 Pin No. Pin Name Function LCD CE Chip enable output to the liquid crystal display driver (IC900) LCD CLK Serial data transfer clock signal output to the liquid crystal display driver (IC900) Not used (open) LCD SO Serial data output to the liquid crystal display driver (IC900) VDD2 —...

  • Page 28: Exploded Views

    SECTION 6 EXPLODED VIEWS NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they • Abbreviation may have some difference from the original are seldom required for routine service. Some : German one.
  • Page 29 (2) FRONT PANEL SECTION LCD900 not supplied (KEY board) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-375-372-01 SPRING (F/R) * 62 3-029-526-01 PLATE, LIGHT GUIDE 3-022-485-01 BUTTON (FF) ()) 3-022-474-01 PANEL, FRONT BACK 3-022-486-01 BUTTON (REW) (0) * 64 3-022-468-01 PLATE, GROUND 3-029-327-01 SPRING (EJECT)
  • Page 30 (3) MECHANISM DECK SECTION-1 (MG-36SZ9-32) not supplied not supplied S901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-938-660-01 LEVER, EJECT 3-392-994-01 ROLLER, PROGRAM 3-392-950-01 SPRING * 115 3-392-933-01 LEVER (B), CHANGE 3-392-951-01 SPRING 3-392-948-01 SPRING 3-375-384-01 HOLDER (X), CASSETTE 3-938-658-01 LEVER, FF * 105...
  • Page 31 (4) MECHANISM DECK SECTION-2 (MG-36SZ9-32) HP901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-570-615-02 POLY-WASHER (DIA.1.2) 3-375-379-01 SCREW, AZIMUTH 3-392-945-01 ROLLER (A), H.P * 164 3-379-142-01 ARM (B), ADJUSTOR 3-392-942-01 ROLLER (B), H.P 3-392-984-02 GUIDE, TAPE 3-375-378-01 ARM (R) ASSY, PINCH 3-377-909-02 LINK (X), ADJUSTOR 3-392-958-01 SPRING (R)
  • Page 32 (5) MECHANISM DECK SECTION-3 (MG-36SZ9-32) not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-392-959-01 SPRING 3-392-937-01 GEAR (B) 3-392-985-02 RATCHET 3-570-615-02 POLY-WASHER (DIA.1.2) * 203 4-908-792-11 SCREW (B2) 3-392-915-01 GEAR, IDLE 3-392-960-01 SPRING 3-392-986-01 ARM, SENSOR 3-392-987-01 GEAR, SELECTOR 3-392-936-01 GEAR (A)
  • Page 33 (6) MECHANISM DECK SECTION-4 (MG-36SZ9-32) M901 S903 S902 not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-392-967-01 BELT, MAIN 3-318-204-91 SCREW (M1.7X4), TAPPING 3-392-995-02 FLYWHEEL ASSY (BR) 3-375-376-01 MUTE (PWB) (MUTE SWITCH BOARD) 3-375-375-02 BELT (C), SUB * 268 3-392-925-01 ARM (A) ASSY, F.R 3-392-918-01 SCREW, EJECT HOOK...
  • Page 34 SECTION 7 ELECTRICAL PARTS LIST NOTE: • Abbreviation • Due to standardization, replacements in the • Items marked “*” are not stocked since they : German parts list may be different from the parts speci- are seldom required for routine service. : South European Some delay should be anticipated when order- fied in the diagrams or the components used...
  • Page 35 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark S950 1-771-484-11 SWITCH, TACTILE (OFF) S951 1-771-484-11 SWITCH, TACTILE (PTY, LOUD) C131 1-163-117-00 CERAMIC CHIP 100PF C132 1-163-117-00 CERAMIC CHIP 100PF S952 1-771-484-11 SWITCH, TACTILE (6) C133 1-163-021-11 CERAMIC CHIP 0.01uF S953...
  • Page 36 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C550 1-126-301-11 ELECT D607 8-719-933-43 DIODE HZS7AIL C551 1-126-301-11 ELECT C552 1-126-301-11 ELECT D608 8-719-988-62 DIODE 1SS355 D609 8-719-200-82 DIODE 11ES2 C553 1-126-301-11 ELECT D610 8-719-200-82 DIODE 11ES2 C554 1-124-589-11 ELECT 47uF...
  • Page 37 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q121 8-729-900-53 TRANSISTOR DTC114EK 1-216-097-00 RES,CHIP 100K 1/10W Q150 8-729-027-23 TRANSISTOR DTA114EKA-T146 1-249-421-11 CARBON 2.2K 1/4W Q151 8-729-900-53 TRANSISTOR DTC114EK 1-249-420-11 CARBON 1.8K 1/4W Q250 8-729-920-21 TRANSISTOR DTC314TKH04 1-249-417-11 CARBON 1/4W Q251...
  • Page 38 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R350 1-216-095-00 METAL CHIP 1/10W R622 1-216-206-00 RES,CHIP 2.2K 1/8W R351 1-216-095-00 METAL CHIP 1/10W R623 1-216-065-00 RES,CHIP 4.7K 1/10W R352 1-216-075-00 METAL CHIP 1/10W R353 1-216-073-00 METAL CHIP 1/10W R624 1-216-089-00 RES,CHIP...
  • Page 39 XR-1800R Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 7-627-553-88 SCREW, PRECISION +P 2X7 7-621-255-20 SCREW +P 2X4 7-685-781-09 SCREW +PTT 2X4 (S) 7-621-555-10 SCREW +K 2X3 7-621-591-00 SCREW +K 2X4 7-624-102-04 STOP RING 1.5, TYPE -E 7-624-104-04 STOP RING 2.0, TYPE -E...

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