hit counter script
Sony XR-1780 E Model Service Manual
  1. Manuals
  2. Brands
  3. Sony Manuals
  4. Car Receiver
  5. XR-1780 E Model
  6. Service manual

Sony XR-1780 E Model Service Manual

Fm/mw/sw cassette car stereo
Hide thumbs
Table of Contents

Advertisement

Quick Links

XR-1780
SERVICE MANUAL
E Model
Model Name Using Similar Mechanism
XR-1790
Tape Transport Mechanism Type
MG-36SZ9-32
SPECIFICATIONS
FM/MW/SW CASSETTE CAR STEREO
MICROFILM

Advertisement

Table of Contents
loading

Related Manuals for Sony XR-1780 E Model

Summary of Contents for Sony XR-1780 E Model

  • Page 1 XR-1780 SERVICE MANUAL E Model Model Name Using Similar Mechanism XR-1790 Tape Transport Mechanism Type MG-36SZ9-32 SPECIFICATIONS FM/MW/SW 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 Location of Controls ............3 circuit board (within 3 times).
  • Page 3 SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
  • Page 4 – 4 –...
  • Page 5 – 5 –...
  • Page 6 – 6 –...
  • Page 7 – 7 –...

  • Page 8: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. FRONT PANEL ASS’Y 3 top cover 4 three claws 4 two claws 5 front panel ass’y MECHANISM DECK SECTION (MG-36SZ9-32) 2 two screws 2 two screws (PTT2.6 × 6) (PTT2.6 ×...
  • Page 9 MAIN BOARD, HEAT SINK 4 five screws (PTT2.6 × 8) 2 two screws 1 two screws (ground point) (PTT2.6 × 6) 3 MAIN board 5 heat sink BRACKET (MD) 2 bracket (MD) 1 two screws 1 two screws (P2.6 × 4) (P2.6 ×...
  • Page 10 MOTOR ASS’Y (CAPSTAN/REEL) (M901) 2 sub belt 3 main belt 1 two screws (P2 × 3) 4 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 MW Auto Scan/Stop Level Adjustment Setting: Setting: [TUNER] [TUNER] button: FM1 button: MW FREQUENCY SELECT switch: FM 50 k FREQUENCY SELECT switch: MW 9 k FM RF signal level meter antenna jack (CN900) generator 30 Ω 15 pF 0.01 µ...
  • Page 15 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 – SET BOTTOM VIEW – FREQUENCY SELECT TP2 (SD) SWITCH...

  • Page 16: Diagrams

    SECTION 5 DIAGRAMS 5-1. NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM 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 17: Printed Wiring Board - Main Board

    XR-1780 5-2. PRINTED WIRING BOARD – MAIN Board – • Semiconductor Location Ref. No. Location D100 D350 D351 D503 D506 D551 D600 D601 D602 D603 D605 D606 D607 D608 D609 D610 D611 D620 D621 D640 IC350 IC450 IC500 Q100 Q101 Q102 Q103 Q104...
  • Page 18 XR-1780 5-3. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 16 for Waveform. – 19 – – 20 –...
  • Page 19 XR-1780 5-4. SCHEMATIC DIAGRAM – MAIN Board (2/2) – • See page 25 for IC Block Diagram. (Page 24) – 21 – – 22 –...

  • Page 20: Printed Wiring Board - Control Board

    XR-1780 5-5. PRINTED WIRING BOARD – CONTROL Board – (Page 17) • Semiconductor Location Ref. No. Location 5-6. SCHEMATIC DIAGRAM – CONTROL Board – D900 C-10 D901 D902 D903 IC900 • Waveform (Page 22) 2 IC900 #™ (OSC) 2.2 Vp-p 15 µ...
  • Page 21 • IC Block Diagram – MAIN Board – 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 –...

  • Page 22: Ic Pin Function Description

    5-7. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC1 LC72322N-9412 (SYSTEM CONTROLLER) Pin No. Pin Name Description System clock input terminal (4.5 MHz) TEST2 Connected to ground Not used (fixed at “H”) AM-SD AM signal meter voltage detection input from the FM/AM tuner unit (TU100) “H” active FM-SD FM signal meter voltage detection input from the FM/AM tuner unit (TU100) “H”...
  • Page 23 Pin No. Pin Name Description LCD-CE Chip enable signal output to the liquid crystal display driver (IC900) “H” active LCD-DATA Serial data output to the liquid crystal display driver (IC900) “H” active AM-ON AM system power supply on/off control signal output terminal “H”: AM on MONO Not used (open) 58 to 60...

  • Page 24: Exploded Views

    SECTION 6 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they are seldom required for routine service. Some may have some difference from the original one. delay should be anticipated when ordering •...
  • Page 25 (2) FRONT PANEL SECTION LCD900 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-375-372-01 SPRING (F/R) 3-022-480-01 BLOCK (A), BUTTON (–. SEL. +. 3-022-485-01 BUTTON (FF) ()) – SHEEK MANU +. LOUD. TUNER. OFF) 3-022-486-01 BUTTON (REW) (0) * 61 3-022-478-01 PLATE, LIGHT GUIDE 3-029-327-01 SPRING (EJECT)
  • Page 26 (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 * 115 3-392-933-01 LEVER (B), CHANGE 3-392-950-01 SPRING 3-392-948-01 SPRING 3-392-951-01 SPRING 3-938-658-01 LEVER, FF 3-375-384-01 HOLDER (X), CASSETTE 3-938-659-01 LEVER, REW * 105...
  • Page 27 (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 28 (5) MECHANISM DECK SECTION-3 (MG-36SZ9-32) 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) 3-392-990-01 GEAR, DETECTION...
  • Page 29 (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 30: Electrical Parts List

    SECTION 7 CONTROL MAIN ELECTRICAL PARTS LIST NOTE: When indicating parts by reference • Due to standardization, replacements in the • Items marked “*” are not stocked since they number, please include the board. are seldom required for routine service. parts list may be different from the parts speci- fied in the diagrams or the components used Some delay should be anticipated when order-...
  • Page 31 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CAPACITOR > C360 1-163-133-00 CERAMIC CHIP 470PF C450 1-124-584-00 ELECT 100uF 1-163-009-11 CERAMIC CHIP 0.001uF C451 1-115-339-11 CERAMIC CHIP 0.1uF 1-124-584-00 ELECT 100uF C452 1-126-160-11 ELECT 1-163-181-00 CERAMIC CHIP 100PF C453...
  • Page 32 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C624 1-163-021-11 CERAMIC CHIP 0.01uF JC118 1-216-296-00 SHORT C625 1-163-021-11 CERAMIC CHIP 0.01uF JC119 1-216-295-00 SHORT JC120 1-216-296-00 SHORT < CONNECTOR > JC122 1-216-296-00 SHORT CN900 1-764-808-21 JACK (ANT) (FM/AM ANTENNA) JC125 1-216-296-00 SHORT * CN901...
  • Page 33 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q605 8-729-205-95 TRANSISTOR 2SA1428-Y Q606 8-729-026-49 TRANSISTOR 2SA1037AK-T146-R R113 1-216-073-00 METAL CHIP 1/10W Q608 8-729-027-52 TRANSISTOR DTC124EKA-T146 R114 1-216-057-00 METAL CHIP 2.2K 1/10W Q610 8-729-120-28 TRANSISTOR 2SC1623-L5L6 R115 1-216-073-00 METAL CHIP 1/10W...
  • Page 34 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R589 1-216-129-00 METAL CHIP 2.2M 1/10W 7-627-553-88 SCREW, PRECISION +P 2X7 R590 1-216-129-00 METAL CHIP 2.2M 1/10W R591 1-216-129-00 METAL CHIP 2.2M 1/10W 7-621-772-10 SCREW +P 2X4 R600 1-216-073-00 METAL CHIP 1/10W...
  • Page 35 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS ************************************** X-3373-605-1 FRAME ASSY 3-012-601-01 COLLAR (B) 3-032-993-01 BRACKET (LOCK) 3-934-325-01 SCREW, +K (5X8) TAPPING 1-776-207-41 CORD (WITH CONNECTOR) (POWER) 3-702-658-01 TOOL (REMOVE) X-3366-405-1 SCREW ASSY (EXP), FITTING FRAME ASSY COLLAR...
  • Page 36 XR-1780 Sony Corporation 99D0525-1 9-926-492-11 Personal & Mobile Communication Company Printed in Japan © 1999. 4 – 40 – Published by Quality Assurance Dept.

This manual is also suitable for:

Xr-1790

Table of Contents