Service Manuals, User Guides, Schematic Diagrams or docs for : AIWA Video HV-GX935 hv-fx990_5700_7750_gx915_935_828
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HV-FX7750 LE
HV-FX5700 LE
HV-FX990 LE
HV-GX935 LE
HV-GX915 LE
HV-FX7750, FX5700 HV-FX990, GX935, GX915
SERVICE MANUAL
STEREO VIDEO CASSETTE RECORDER <7750/5700>
BASIC VIDEO MECHANISM
: D33K-4HF/PAL(6721R-0250B)<7750,5700>
VIDEO CASSETTE RECORDER <990/935/915> : D33K-4HD/PAL(6721R-0230B)<990>
: D33K-2HD/PAL(6721R-0212A)<935,915>
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-007-347-2T1).
N
SIO
VI
RE
TA
DA
S/M Code No. 09-007-347-2R1
TABLE OF CONTENTS
SPECIFICATIONS ............................................................ 3 9. Head F/E ................................................................... 70
ACCESSORIES LIST ....................................................... 3 10. Base Assembly A/C Head ........................................ 70
DISASSEMBLY INSTRUCTIONS ..................................... 4 11. Brake Assembly S .................................................... 71
SERVICE POSITION ........................................................ 5 12. Brake Assembly T .................................................... 71
VCR TEST TAPE INTERCHANGEABILITY TABLE ........ 6 13. Arm Assembly Tension ............................................. 71
ELECTRICAL MAIN PARTS LIST .............................. 7 ~ 9 14. Reel S & Reel T ....................................................... 71
TRANSISTOR ILLUSTRATION ........................................ 9 15. Support CST ............................................................ 72
WIRE HARNESS DIAGRAM .......................................... 10 16. Base Assembly P4 ................................................... 72
BLOCK DIAGRAM ................................................. 11 ~ 22 17. Opener Lid ............................................................... 72
SCHEMATIC DIAGRAM 18. Arm Assembly T/up .................................................. 72
1. POWER/TUNER/NICAM <7750/5700> ............. 23 ~ 24 19. Arm Assembly Pinch ................................................ 72
2. POWER/TUNER <990/935/915> ....................... 25 ~ 26 20. Belt Capstan/Motor Capstan .................................... 73
3. AUDIO/VIDEO SECTION ................................... 29 ~ 30 21.Clutch Assembly D33-K ............................................ 73
4. Hi-Fi AUDIO/SCART <7750/5700> .................... 31 ~ 32 22. Lever F/R ................................................................. 73
5. SCART <990/935/915> ...................................... 33 ~ 34 23. Gear Assembly H-Up/D-K or
6. SYSTEM CONTROL/SERVO Gear Assembly Up/D-K ............................................ 73
<7750/5700> ...................................................... 35 ~ 36 24. Bracket Assembly Jog .............................................. 74
7. SYSTEM CONTROL/SERVO 25. Guide Rack F/L, Gear Rack F/L ............................... 74
<990/935/915> ................................................... 39 ~ 40 26. Brake Assembly Capstan ......................................... 74
8. KEY1 <7750/5700> .................................................... 47 27. Gear Drive/Gear Cam/Gear Connector ................... 75
9. KEY2 <7750/5700> .................................................... 47 28. Bracket Assembly L/D motor .................................... 75
10. KEY1 <990/935/915> ............................................... 49 29. Gear Sector .............................................................. 76
11. KEY2 <990/935/915> ............................................... 49 30. Base Tension/Plate Slider/Lever Tension ................. 76
WAVEFORM 31. Gear Assembly P3/Gear Assembly P2 .................... 77
AUDIO/VIDEO SECTION ............................................... 28 32. Base Assembly P3/Base Assembly P2 .................... 77
SYSTEM CONTROL/SERVO SECTION ....................... 38 33. Arm Assembly Idler or Arm assembly Idler Jog ........ 77
VOLTAGE CHART DECK MECHANISM ADJUSTMENT
1. POWER SECTION ..................................................... 25 Tools and Fixtures for service ......................................... 78
2. AUDIO/VIDEO SECTION ........................................... 27 1. Mechanism Alignment Position Check ....................... 79
3. Hi-Fi AUDIO/SCART SECTION ................................. 33 2. Preparation for Adjustment ........................................ 80
4. SYSTEM CONTROL/SERVO SECTION ................... 37 3. Checking Torque ........................................................ 80
FL DISPLAY ............................................................ 41 ~ 42 4. Guide Roller Height Adjustment ................................. 81
WIRING 4-1. Preliminary Adjustment .......................................... 81
1. MAIN C.B <7750/5700> ..................................... 43 ~ 44 4-2. Precise Adjustment ................................................ 81
2. MAIN C.B <990/935/915> .................................. 45 ~ 46 5. Audio/Control (A/C) Head Adjustment ........................ 82
3. KEY1 C.B <7750/5700> ............................................. 48 5-1. Preliminary Adjustment .......................................... 82
4. KEY2 C.B <7750/5700> ............................................. 48 5-2. Confirm that the Tape Path smoothly between
5. KEY1 C.B <990/935/915> .......................................... 50 the Take-up Guide and Pinch Roller ..................... 83
6. KEY2 C.B <990/935/915> .......................................... 50 5-3. Precise Adjustment (Azimuth Adjustment) ............. 83
7. NICAM C.B ................................................................. 51 6. X-Value Adjustment .................................................... 83
ADJUSTMENT ........................................................ 52 ~ 53 7. Adjustment after Replacing Drum Assembly
IC DESCRIPTION ................................................... 54 ~ 57 (Video Heads) ............................................................. 84
MECHANICAL EXPLODED VIEW 1/1 ........................... 58 8. Check the Tape Travel after Reassembling
MECHANICAL MAIN PARTS LIST 1/1 ......................... 59 Deck Assembly ............................................................ 84
MECHANISM EXPLODED VIEW 1/3~3/3 .............. 60 ~ 64 8-1. Checking Audio and RF Locking Time
MECHANISM MAIN PARTS LIST 1/3~3/3 ............. 61 ~ 65 during Playback and after CUE or REV ................ 84
DECK MECHANISM PARTS LOCATIONS 8-2. Check for Tape Curling or Jamming ....................... 84
Top View .......................................................................... 66 MAINTENANCE/INSPECTION PROCEDURE
Bottom View .................................................................... 66 1. Check before starting Repairs ................................... 85
DECK MECHANISM DISASSEMBLY 2. Required Maintenance ............................................... 86
1. Drum Assembly ......................................................... 67 3. Scheduled Maintenance ............................................ 86
2. Plate Assembly Top ................................................... 69 4. Supplies Required for Inspection and Maintenance .. 86
3. Holder Assembly CST ............................................... 69 5. Maintenance Procedure ............................................. 86
4. Guide CST ................................................................ 69 5-1. Cleaning ................................................................. 86
5. Bracket Side (L)/Bracket Assembly Door .................. 69 5-2. Greasing ................................................................ 87
6. Arm Assembly F/L ..................................................... 69 MECHANISM TROUBLESHOOTING GUIDE
7. Lever Assembly S/W ................................................. 69 1. Deck Mechanism ............................................... 88 ~ 90
8. Arm Assembly Cleaner .............................................. 70 2. Front Loading Mechanism ................................. 91 ~ 92
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 Double azimuth 2 heads
Tuner system Frequency synthesized tuner Tuner system Frequency synthesized tuner
TV system B/G, L/L' SECAM, B/G PAL TV system B/G, L/L' SECAM, B/G PAL
Video signal system SECAM/MESECAM/PAL color signal, Video signal system SECAM/MESECAM/PAL color signal,
625 lines, 50 fields 625 lines, 50 fields
Usable cssettes VHS video cassettes Usable cssettes VHS video cassettes
Recording/playback time PAL/SECAM/MESECAM Recording/playback time PAL/SECAM/MESECAM
SP: 5 hours max. with E-300 tape. 5 hours max. with E-300 tape.
LP: 10 hours max. with E-300 tape NTSC (Playback only)
NTSC (Playback only) 3 hours 30 minutes max.
SP: 3 hours 30 minutes max. with T-210 tape
with T-210 tape Tape speed PAL/SECAM/MESECAM
LP: 7 hours max. 23.39 mm/s
with T-210 tape NTSC (Playback only)
EP: 10 hours 30 minutes max. 33.35 mm/s
with T-210 tape Rewind time: Approx. 3 min. with E-180 tspe
Tape speed PAL/SECAM/MESECAM Channel coverage VHF-low: C02 to C12, C13 to C20
SP: 23.39 mm/s UHF: C21 to C69
LP: 11.69 mm/s CATV: S01 to S41
NTSC (Playback only) Video input 0.5 - 2.0 Vp-p, 75 ohm, unbalanced
SP: 33.35 mm/s Video output 1.0 Vp-p, 75 ohm, unbalanced
LP: 16.67 mm/s Horizontal resolution 240 lines
EP: 11.12 mm/s Video S/N 43 dB
Rewind time: Approx. 3 min. with E-180 tspe Audio track 1 track (Normal sound)
Channel coverage VHF-low: C02 to C12, C13 to C20 Audio input SCART: -6 dB, 10 k ohm
UHF: C21 to C69 RCA: -6 dB, 47 k ohm
CATV: S01 to S41 Audio output SCART: -6 dB, less than 1 k ohm
Video input 0.5 - 2.0 Vp-p, 75 ohm, unbalanced Operating temperature: 5 ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo