Service Manuals, User Guides, Schematic Diagrams or docs for : AIWA Video HV-FX7800 hvfx5850_fx7800_gx1100_gx1400_gx1700_d33

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                                             HV-FX7800                         K

                                             HV-FX5850                         K

                                             HV-GX1700                         K

                                             HV-GX1400                         K

                                             HV-GX1100                         K
                HV-FX7800




                HV-FX5850                           HV-GX1700, GX1400, GX1100




     SERVICE MANUAL
STEREO VIDEO CASSETTE RECORDER <7800/5850>
                                             BASIC VIDEO MECHANISM
                                              : D33Y1-4HF/PAL(6721RF0450A)<7800,5850>
VIDEO CASSETTE RECORDER <1700/1400/1100>
                                              : D33Y1-2HD/PAL(6721RF0405A)<1700,1400,1100>




                                                                                     TA
                                                                                   DA




                            S/M Code No. 09-016-357-3N2
                                                                            TABLE OF CONTENTS

SPECIFICATIONS ................................................................... 3                    9. Head F/E .......................................................................... 86
ACCESSORIES LIST .............................................................. 4                      10. Base Assembly A/C Head ............................................... 86
DISASSEMBLY INSTRUCTIONS ............................................ 5                                11. Brake Assembly S ........................................................... 87
SERVICE POSITION ............................................................... 6                     12. Brake Assembly T ........................................................... 87
VCR TEST TAPE INTERCHANGEABILITY TABLE ............... 7                                               13. Arm Assembly Tension .................................................... 87
ELECTRICAL MAIN PARTS LIST ................................... 8 ~ 10                                  14. Reel S & Reel T .............................................................. 87
TRANSISTOR ILLUSTRATION ............................................. 11                               15. Support CST ................................................................... 88
WIRE HARNESS DIAGRAM ................................................. 12                              16. Base Assembly P4 .......................................................... 88
BLOCK DIAGRAM ........................................................ 13 ~ 20                         17. Opener Lid ...................................................................... 88
SCHEMATIC DIAGRAM                                                                                      18. Arm Assembly T/up ......................................................... 88
 1. POWER/TUNER/NICAM <7800/5850> ............................ 21                                      19. Arm Assembly Pinch ....................................................... 88
 2. POWER/TUNER <1700/1400/1100> ................................ 22                                   20. Belt Capstan/Motor Capstan ........................................... 89
 3. AUDIO/VIDEO <7800/5850> ............................................ 25                            21.Clutch Assembly D33-Y ................................................... 89
 4. AUDIO/VIDEO <1700/1400/1100> .................................... 26                               22. Lever F/R ........................................................................ 89
 5. Hi-Fi AUDIO/SCART <7800/5850> ................................... 27                               23. Gear H-Up/D-K or
 6. SCART <1700/1400> ........................................................ 28                          Gear Up/D-K ................................................................... 89
 7. SCART <1100> ................................................................. 29                  24. Bracket Assembly Jog ..................................................... 90
 8. SYSTEM CONTROL/SERVO/OSD <7800/5850> ............ 31                                               25. Guide Rack F/L, Gear Rack F/L ...................................... 90
 9. SYSTEM CONTROL/SERVO/OSD <1700/1400/1100> ... 32                                                   26. Brake Assembly Capstan ................................................ 90
 10. KEY-1 <7800/5850> ........................................................ 40                     27. Gear Drive/Gear Cam/Gear Connector .......................... 91
 11. KEY-1 <1700/1400/1100> ............................................... 42                         28. Bracket Assembly L/D Motor ........................................... 91
 12. KEY-2 .............................................................................. 44           29. Gear Sector ..................................................................... 92
WAVEFORM                                                                                               30. Base Tension/Plate Slider/Lever Tension ........................ 92
 AUDIO/VIDEO SECTION ...................................................... 24                         31. Gear Assembly P3/Gear Assembly P2 ........................... 93
 SYSTEM CONTROL/SERVO/OSD SECTION ..................... 34                                             32. Base Assembly P3/Base Assembly P2 ........................... 93
VOLTAGE CHART                                                                                          33. Arm Assembly Idler or Arm assembly Idler Jog ............... 93
 1. POWER/NICAM SECTION ............................................... 23                            DECK MECHANISM ADJUSTMENT
 2. AUDIO/VIDEO SECTION .................................................. 23                         Tools and Fixtures for Service ................................................ 94
 3. Hi-Fi AUDIO/SCART SECTION ........................................ 30                              1. Mechanism Alignment Position Check .............................. 95
 4. SYSTEM CONTROL/SERVO/OSD SECTION ................. 33                                              2. Preparation for Adjustment ............................................... 96
FL DISPLAY/LED DISPLAY .................................................. 35                           3. Checking Torque ............................................................... 96
WIRING                                                                                                 4. Guide Roller Height Adjustment ........................................ 97
 1. MAIN C.B <7800/5850> .................................................... 36                        4-1. Preliminary Adjustment ................................................. 97
 2. MAIN C.B <1700/1400> .................................................... 37                        4-2. Precise Adjustment ....................................................... 97
 3. MAIN C.B <1100> ............................................................. 38                   5. Audio/Control (A/C) Head Adjustment ............................... 98
 4. NICAM/A2 C.B <7800/5850> ............................................ 39                            5-1. Preliminary Adjustment ................................................. 98
 5. KEY-1 C.B <7800/5850> ................................................... 41                        5-2. Confirm that the Tape Passes smoothly between
 6. KEY-1 C.B <1700/1400/1100> .......................................... 43                                 the Take-up Guide and Pinch Roller ............................ 99
 7. KEY-2 C.B ......................................................................... 45              5-3. Precise Adjustment (Azimuth Adjustment) .................... 99
ADJUSTMENT ....................................................................... 46                  6. X-Value Adjustment ........................................................... 99
IC BLOCK DIAGRAM ............................................................ 47                       7. Adjustment after Replacing Drum Assembly
IC DESCRIPTION .......................................................... 48 ~ 55                        (Video Heads) .................................................................. 100
ELECTRICAL TROUBLESHOOTING ........................... 56 ~ 72                                         8. Check the Tape Travel after Reassembling
MECHANICAL EXPLODED VIEW 1/1 .................................. 73                                       Deck Assembly ................................................................. 100
MECHANICAL MAIN PARTS LIST 1/1 ........................... 74,75                                        8-1. Checking Audio and RF Locking Time
MECHANISM EXPLODED VIEW 1/3~3/3 ................... 76,78,80                                                 during Playback and after CUE or REV ..................... 100
MECHANISM MAIN PARTS LIST 1/3~3/3 .................. 77,79,81                                           8-2. Check for Tape Curling or Jamming ............................ 100
DECK MECHANISM PARTS LOCATIONS                                                                        MAINTENANCE/INSPECTION PROCEDURE
Top View ................................................................................. 82          1. Check before starting Repairs ........................................ 101
Bottom View ........................................................................... 82             2. Required Maintenance .................................................... 102
DECK MECHANISM DISASSEMBLY                                                                             3. Scheduled Maintenance ................................................. 102
  1. Drum Assembly ................................................................ 83                 4. Supplies Required for Inspection and Maintenance ....... 102
  2. Plate Assembly Top .......................................................... 85                  5. Maintenance Procedure .................................................. 102
  3. Holder Assembly CST ...................................................... 85                      5-1. Cleaning ...................................................................... 102
  4. Guide CST ....................................................................... 85               5-2. Greasing ..................................................................... 103
  5. Bracket Side (L)/Bracket Assembly Door ......................... 85                              MECHANISM TROUBLESHOOTING GUIDE
  6. Arm Assembly F/L ............................................................ 85                  1. Deck Mechanism .................................................. 104 ~ 106
  7. Lever Assembly S/W ........................................................ 85                    2. Front Loading Mechanism .................................... 107 ~ 108
  8. Arm Assembly Cleaner ..................................................... 86

                                                                                                -2-
                                                    SPECIFICATIONS

                                                     
Video recording system   Rotary 2 head helical scanning system          Video recording system  Rotary 2 head helical scanning system
Video head               Double azimuth 4 heads                         Video head              2 heads
Tuner system             Frequency synthesized tuner                    Tuner system            Frequency synthesized tuner
TV system                I                                              TV system               I
Video signal system      PAL color signal, 625 lines, 50 fields         Video signal system     PAL color signal, 625 lines, 50 fields
Usable cssettes          VHS video cassettes                            Usable cssettes         VHS video cassettes
Recording/playback time  PAL                                            Recording/playback time PAL
                           SP: 5 hours max. with E-300 tape.                                      SP: 5 hours max. with E-300 tape.
                           LP: 10 hours max. with E-300 tape                                      LP: 10 hours max. with E-300 tape
                         NTSC (Playback only)                                                   NTSC (Playback only)
                           SP: 3 hours 30 minutes max.                                            SP: 3 hours 30 minutes max.
                                with T-210 tape                                                        with T-210 tape
                           LP: 7 hours max. with T-210 tape                                       LP: 7 hours max. with T-210 tape
                           EP: 10 hours 30 minutes max.                                           EP: 10 hours 30 minutes max.
                                with T-210 tape                                                        with T-210 tape
Tape speed               PAL                                            Tape speed              PAL
                           SP: 23.39 mm/s                                                         SP: 23.39 mm/s
                           LP: 11.69 mm/s                                                         LP: 11.69 mm/s
                         NTSC (Playback only)                                                   NTSC (Playback only)
                           SP: 33.35 mm/s                                                         SP: 33.35 mm/s
                           LP: 16.67 mm/s                                                         LP: 16.67 mm/s
                           EP: 11.12 mm/s                                                         EP: 11.12 mm/s
Rewind time:             Approx. 3 min. with E-180 tape                 Rewind time:            Approx. 3 min. with E-180 tape
Channel coverage         UHF: 21 to 69                                  Channel coverage        UHF: 21 to 69
RF output                UHF channel between 22 and 68, 70 dB



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