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Aiwa HV-FX780 Video cassette recorder
Manufacturer:
Model:
HV-FX780
Date:
unknown
Class:
Type:
SubType:
Service Manual
Manual type:
Service Manual
Pages:
67
Size:
5.50 Mbytes (5762395 Bytes)
Language:
english
Revision:
Manual-ID:
09-999-335-6R1 and/or 920074
Date:
unknown
Quality:
Electronic document, no scan, very well readable.
Upload date:
26 December 2009
MD5:
9b853e01aa5d8b5bbaf839c82e539bf0
Downloads:
1017

Information

This Service Manual is the “Revision Publishing” and replaces “Simple Manual” (S/M Code No.09-999-335-6T1). TABLE OF CONTENTS 16. Base Assembly P4 ... 54 SPECIFICATIONS ... 3 17. Opener Lid ... 54 ACCESSORIES LIST ... 3 18. Arm Assembly T/up ... 54 DISASSEMBLY INSTRUCTIONS ... 4 19. Arm Assembly Pinch ... 54 SERVICE POSITION ... 5 20. Belt Capstan/Motor Capstan ... 55 VCR TEST TAPE INTERCHANGEABILITY TABLE ... 6 21.Clutch Assembly D33 ... 55 ELECTRICAL MAIN PARTS LIST ... 7 ~ 8 22. Lever F/R ... 55 TRANSISTOR ILLUSTRATION ... 8 23. Gear Assembly H-UP/D or Gear Assembly UP/D ... 55 WIRE HARNESS DIAGRAM ... 9 24. Bracket Assembly Jog ... 56 BLOCK DIAGRAM ... 10 ~ 16 25. Guide Rack F/L, Gear Rack F/L ... 56 SCHEMATIC DIAGRAM 26. Brake Assembly Capstan ... 56 1. POWER SECTION ... 17 ~ 18 27. Gear Drive/Gear Cam/Gear Connector ... 57 2. AUDIO/VIDEO SECTION ... 19 ~ 20 28. Bracket Assembly L/D motor ... 57 3. SYSTEM CONTROL/SERVO/OSD SECTION) .. 23 ~ 24 29. Gear Sector ... 58 4. Tuner SECTION ... 25 30. Base Tension/Plate Slider/Lever Tension ... 58 5. FRONT 1 C.B ... 29 31. Gear Assembly P3/Gear Assembly P2 ... 59 6. FRONT 2 C.B ... 29 32. Base Assembly P3/Base Assembly P2 ... 59 WAVEFORM 33. Arm Assembly Idler Jog or Arm Assembly Idler ... 59 1. VIDEO SECTION ... 21 DECK MECHANISM ADJUSTMENT 2. SERVO/OSD SECTION ... 22 Tools and Fixtures for service ... 60 FL DISPLAY ... 26 1. Mechanism Alignment Position Check ... 61 WIRING 2. Preparation for Adjustment ... 62 1. MAIN C.B SECTION ... 27 ~ 28 3. Checking Torque ... 62 2. FRONT 1 C.B SECTION ... 30 4. Guide Roller Height Adjustment ... 63 3. FRONT 2 C.B SECTION ... 30 4-1. Preliminary Adjustment ... 63 IC DESCRIPTION ... 31 ~ 36 4-2. Precise Adjustment ... 63 IC BLOCK DIAGRAM ... 37 5. Audio/Control (A/C) Head Adjustment ... 64 ADJUSTMENT ... 38 ~ 39 5-1. Preliminary Adjustment ... 64 MECHANICAL EXPLODED VIEW 1/1 ... 40 5-2. Confirm that the Tape Path smoothly between the MECHANICAL MAIN PARTS LIST 1/1 ... 40 Take-up Guide and Pinch Roller ... 65 MECHANISM EXPLODED VIEW 1/3, 2/3, 3/3 ... 42,44,46 5-3. Precise Adjustment (Azimuth Adjustment) ... 65 MECHANISM MAIN PARTS LIST 1/3, 2/3, 3/3 ... 43,45,47 6. X-Value Adjustment ... 65 DECK MECHANISM PARTS LOCATIONS 7. Adjustment after Replacing Drum Assembly Top View ... 48 (Video Heads) ... 66 Bottom View ... 48 8. Check the Tape Travel after Reassembling DECK MECHANISM DISASSEMBLY Deck Mechanism ... 66 1. Drum Assembly ... 49 8-1. Checking Audio and RF Locking Time 2. Plate Assembly Top ... 51 during Playback and after CUE or REV ... 66 3. Holder Assembly CST ... 51 8-2. Check for Tape Curling or Jamming ... 66 4. Guide CST ... 51 MAINTENANCE/INSPECTION PROCEDURE 5. Bracket Side (L)/Bracket Assembly Door ... 51 1. Check before starting Repairs ... 67 6. Arm Assembly F/L ... 51 2. Required Maintenance ... 68 7. Lever Assembly S/W ... 51 3. Scheduled Maintenance ... 68 8. Arm Assembly Cleaner ... 68 9. Head F/E ... 52 5. Maintenance Procedure ... 68 10. Base Assembly A/C Head ... 52 5-1. Cleaning ... 68 11. Brake Assembly S ... 53 5-2. Greasing ... 69 12. Brake Assembly T ... 53 MECHANISM TROUBLESHOOTING GUIDE 13. Arm Assembly Tension ... 53 1. Deck Mechanism ... 70 14. Reel S & Reel T ... 53 2. Front Loading Mechanism ... 73 15. Support CST ... 54

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