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Sony SLV-M20HF Service Manual

Video cassette recorder
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SERVICE MANUAL
G
j
• Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENT
for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
MICROFILM
SLV-M20HF
SPECIFICATIONS
VIDEO CASSETTE RECORDER
RMT-V250
US Model
Canadian Model
S MECHANISM

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Summary of Contents for Sony SLV-M20HF

  • Page 1 SLV-M20HF RMT-V250 SERVICE MANUAL US Model Canadian Model • Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENT for MECHANICAL ADJUSTMENTS. S MECHANISM (9-921-647-11) SPECIFICATIONS VIDEO CASSETTE RECORDER MICROFILM...
  • Page 2 SLV-M20HF MA-335 (REC/PB AMP) SCHEMATIC DIAGRAM — Ref. No.: MA-335 Board; 1,000 Series — MA-335 BOARD THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. MA-335 BOARD IC260 4 REC (In addition to this, the necessary note is...
  • Page 3 SLV-M20HF MA-335 (VIDEO, NORMAL AUDIO) SCHEMATIC DIAGRAM — Ref. No.: MA-335 Board; 1,000 Series — • See page 4-3 for MA-335 BOARD printed wiring board. MA-335 BOARD !£ IC201 !∞ PB IC201 #• REC/ PB CN261 2 PB 2Vp-p 200mV/Div 0.1µsec/div...
  • Page 4 SLV-M20HF MA-335 (SERVO/SYSTEM CONTROL) SCHEMATIC DIAGRAM • See page 4-3 for MA-335 BOARD printed wiring board. — Ref. No.: MA-335 Board; 1,000 Series — MA-335 BOARD !¶ @£ IC161 1 REC/PB IC161 ^• REC/PB !• IC161 5Vp-p 5Vp-p 30Hz 30Hz @¢...
  • Page 5 SLV-M20HF SLV-M20HF • See page 4-3 for MA-335 BOARD printed wiring board. MA-335 (ON SCREEN DISPLAY) SCHEMATIC DIAGRAM — Ref. No.: MA-335 Board; 1,000 Series — MA-335 BOARD @¶ @• @ª IC501 !º REC/PB IC500 9 REC/PB IC500 3, @∞ REC/PB...
  • Page 6 SLV-M20HF MA-335 (DSF) SCHEMATIC DIAGRAM • See page 4-3 for MA-335 BOARD printed wiring board. — Ref. No.: MA-335 Board; 1,000 Series — MA-335 BOARD #º #¡ B PB Q810 E PB Q802 0.2V/div 0.1V/div 0.1µsec/div 0.1µsec/div 4-17 4-18 MA-335 (5/9)
  • Page 7 SLV-M20HF MA-335 (AFM AUDIO) SCHEMATIC DIAGRAM • See page 4-3 for MA-335 BOARD printed wiring board. — Ref. No.: MA-335 Board; 1,000 Series — AFM AUDIO 4-19 4-20 MA-335 (6/9)
  • Page 8 SLV-M20HF MA-335 (TUNER) SCHEMATIC DIAGRAM • See page 4-3 for MA-335 BOARD printed wiring board. — Ref. No.: MA-335 Board; 1,000 Series — TUNER 4-21 4-22 MA-335 (7/9)
  • Page 9 SLV-M20HF MA-335 (POWER SUPPLY) SCHEMATIC DIAGRAM • See page 4-3 for MA-335 BOARD printed wiring board. — Ref. No.: MA-335 Board; 1,000 Series — POWER SUPPLY 4-23 4-24 MA-335 (8/9)
  • Page 10 SLV-M20HF MA-335 (AV-BUS) SCHEMATIC DIAGRAM • See page 4-3 for MA-335 BOARD printed wiring board. — Ref. No.: MA-335 Board; 1,000 Series — AV-BUS 4-25 4-26 MA-335 (9/9)
  • Page 11: Mode Control

    SLV-M20HF FR-139 (MODE CONTROL) SCHEMATIC DIAGRAM — Ref. No.: FR-139 Board; 2,000 Series — MODE CONTROL 4-29 4-30 FR-139...
  • Page 12 SLV-M20HF There are few cases that the part printed on this diagram isn’t mounted in this model. There are few cases that the part printed on this diagram isn’t mounted in this model. DM-81 (OPERATION SWITCHES) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM AJ-2 (LINE-2 IN) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM —...
  • Page 13: Front Smart File Sensor

    SLV-M20HF AN-16 (INNER SMART FILE SENSOR/WRITER), AN-17 (FRONT SMART FILE SENSOR) PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No.: AN-16, AN-17 Board; 3,000 Series —...
  • Page 14 SLV-M20HF MG-21 (SMART FILE) SCHEMATIC DIAGRAM — Ref. No.: MG-21 Board; 3,000 Series — MG-21 BOARD IC002 !∞ IC003 #™ 3Vp-p 3.3Vp-p 16MHz 13.56MHz SMART FILE 4-39 4-40 MG-21 (1/3)
  • Page 15: Guide Plus

    SLV-M20HF MG-21 (GUIDE PLUS) (SMART FILE) SCHEMATIC DIAGRAM — Ref. No.: MG-21 Board; 3,000 Series — MG-21 BOARD IC301 ^§ OSCI 3.6Vp-p 4.0MHz GUIDE PLUS 4-41 4-42 MG-21 (2/3)
  • Page 16 SLV-M20HF MG-21 (VIDEO ENCODER) (SMART FILE) SCHEMATIC DIAGRAM — Ref. No.: MG-21 Board; 3,000 Series — MG-21 BOARD IC502 3 H.VCO1 IC502 !¡ CHR.VCO1 40mVp-p 0.4Vp-p 4.03MHz 14.31818MHz VIDEO ENCODER 4-43 4-44 MG-21 (3/3)
  • Page 17: Switching Regulator

    SLV-M20HF POWER BLOCK SR821 (SWITCHING REGULATOR) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No.: SR821 Board; 9,000 Series — POWER BLOCK (SR821) T101 POWER TRANSFORMER...