Sony SHR-M1 Service Manual
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Sony SHR-M1 Service Manual

Sony SHR-M1 Service Manual

Pll synthesizer fm stereo headphone radio
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Download this manual See also: Operating Instructions
SERVICE MANUAL
Ver 1.0 1999.10
Radio segment
Frequency range:
Channel Step:
Power output:
Headphone segment
Headphone type:
Driver unit:
Input:
Maximum input:
Impedance:
Frequency characteristic: 14 to 24,000 Hz
MICROFILM
SPECIFICATIONS
FM 76 – 108 MHz
0.1 MHz
3.5 mW + 3.5 mW
Open-air Dynamic
ø 30 mm Dome type
ø 3.5 mm stereo mini-jack
100 mW
24 Ω (at 1 kHz)
SHR-M1
Others
Power requirements
1.5 V DC, one R03 (size AAA) battery
Mass
Approx. 99.5 g (3.5 oz) incl. a battery, not
incl. cord
Accessories supplied
Sony R03 (size AAA) battery (1)
Connecting cord (1)
Design and specifications are subject to change without notice
PLL SYNTHESIZER
FM STEREO HEADPHONE RADIO
E Model
Tourist Model

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Summary of Contents for Sony SHR-M1

  • Page 1 Mass Approx. 99.5 g (3.5 oz) incl. a battery, not Power output: 3.5 mW + 3.5 mW incl. cord Accessories supplied Sony R03 (size AAA) battery (1) Headphone segment Connecting cord (1) Headphone type: Open-air Dynamic Driver unit: ø 30 mm Dome type...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SERVICE NOTE 1. GENERAL ·········································································· 3 In order to repair the machine while the main power is on, connecting tool the MAIN board with the KEY board with a dedicated tool (J- 2. DISASSEMBLY 2503-012-A), is convenient. 2-1.

  • Page 3: General

    SECTION 1 This section is extracted from instruction manual. GENERAL — 3 —...

  • Page 4: Disassembly

    SECTION 2 DISASSEMBLY Note : Disassemble the unit in the order as shown below. JACK Board Belt Driver (030F023A) (L) Driver (030F023A) (R) MAIN Board KEY Board Note : Follow the disassembly procedure in the numerical order given. 2-1. DRIVER (030F023A)(L) Pad, ear Cushion Driver...

  • Page 5: Driver (030F023A)(R)

    2-3. DRIVER (030F023A)(R) Pad, ear Cushion Rrear side (Remove the two solderings.) Driver Driver (030F023A) (030F023A) Lead wire (red) Lead wire (white) Release the three claws. Cabinet assy 2-4. MAIN BOARD Two screws (+P2 × 8) Precaution for installation Release the three claws.

  • Page 6: Key Board

    2-5. KEY BOARD Screw (+P2 × 8) Holder (button) KEY board Release the three claws. Cabinet upper (R) assy Belt 2-6. BELT Precaution for installation Precaution for installation Lead wire (ten conductors) Precaution for installation Lead wire (A) Right side Wire (10 arbor), lead Marking Lead wire (A)

  • Page 7: Electrical Adjustment

    SECTION 3 ELECTRICAL ADJUSTMENT FM VCO Adjustment 0dB=1µV Procedure : FM RF signal FM RF signal generator generator 0.01 µ F 0.01 µ F to ANT (TP6) to ANT (TP6) Carrier frequency : 98MHz 75kHz (100%) amplitude modulation Modulation : no modulation by 1kHz signal.

  • Page 8: Diagrams

    SECTION 4 DIAGRAMS Note on Printed Wiring Board: • IC BLOCK DIAGRAMS • X : parts extracted from the conductor side. • : Through hole. • b : Pattern from the side which enables seeing. Caution: Pattern face side: Parts on the pattern face side seen from TA7371AF-EL (SIDE A) the pattern face are indicated.

  • Page 9: Block Diagram

    SHR-M1 4-1. BLOCK DIAGRAM JACK BOARD TP301 TP302 TU+1.5V L1, CT1 FM TRACKING STOP FM STEREO DECODER TU+1.5V PULSE FM FRONT END FM RF TU+1.5V IF IN FM IF J301 FM IF IN FM IF FM DET FM IF AUDIO IN...
  • Page 10 SHR-M1 • Refer to page 8 for Note on Printed Wiring Board. 4-2. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor Location Ref. No. Location MAIN BOARD MAIN BOARD (SIDE B) (SIDE A) TO KEY BOARD CN201 D301 D302...

  • Page 11: Schematic Diagram

    SHR-M1 4-3. SCHEMATIC DIAGRAM • Refer to page 8 for Note on Schematic Diagram and IC block diagrams. 1.7Vp-p 75kHz TOTAL CURRENT SEGMENT ON: 56 mA SEGMENT OFF: 40 mA D202 - 204 (LCD BACK LIGHT) — 13 — — 14 —...

  • Page 12: Printed Wiring Board - Key Board

    SHR-M1 • Refer to page 8 for Note on Printed Wiring Board. 4-4. PRINTED WIRING BOARD — KEY BOARD — KEY BOARD KEY BOARD (SIDE A) (SIDE B) S201 S203 TO MAIN BOARD TUNE+ PRESET E MODEL JE MODEL S202 TUNE–...

  • Page 13: Ic Pin Function Description

    4-5. IC PIN FUNCTION DESCRIPTION • IC201 (uPD17072GB-563-1A7) SYSTEM CONTROL, LCD DRIVE Pin No. Pin Name Description 1 to 2 — Not used (open) MUTE Low when radio muting (no sound) TUNE ON High when radio is turned on 5 to 8 —...

  • Page 14: Exploded Views

    SECTION 5 EXPLODED VIEWS NOTE: • Abbreviation • -XX, -X mean standardized parts, so they may • Accessories and packing materials are given in : Tourist model. have some differences from the original one. the last of this parts list. •...

  • Page 15: Electrical Parts List

    SECTION 6 MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • CAPACITORS: • Color Indication of Appearance Parts parts list may be different from the parts uF: µF Example: specified in the diagrams or the components •...
  • Page 16 MAIN JACK Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-216-797-11 METAL CHIP 1/16W < DIODE > 1-216-835-11 METAL CHIP 1/16W 1-216-837-11 METAL CHIP 1/16W D301 8-719-046-91 DIODE MA2S111 1-216-797-11 METAL CHIP 1/16W D302 8-719-420-87 DIODE MA8130 1-216-833-91 RES,CHIP 1/16W D303...
  • Page 17 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C207 1-162-964-11 CERAMIC CHIP 0.001uF R223 1-216-813-11 METAL CHIP 1/16W C208 1-164-156-11 CERAMIC CHIP 0.1uF R224 1-216-813-11 METAL CHIP 1/16W C209 1-162-970-11 CERAMIC CHIP 0.01uF R225 1-216-857-11 METAL CHIP 1/16W C210 1-162-970-11 CERAMIC CHIP...
  • Page 18 SHR-M1 Sony Corporation 99J1625-1 Personal Audio Company 9-927-179-11 Printed in Japan ©1999.10 — 22 — Published by General Engineering Dept.

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