Aiwa HV-FX5100 service manual Confirmation and Adjustment of AUDIO/ Control Head, D1-3

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MECHANICAL ADJUSTMENTS

2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ CONTROL HEAD

When the Tape Running Mechanism does not work well, adjust the following items.

1.Playback the VHS Alignment Tape (JG001C or JG001E).

(Refer to SERVICING FIXTURE AND TOOLS)

2.Confirm that the reflected picture of stamp mark is appeared on the tape prior to P4 Post as shown in Fig. 2- 2-A.

a)When the reflected picture is distorted, turn the screw 1 clockwise until the distortion is disappeared.

b)When the reflected picture is not distorted, turn the screw 1 counterclockwise until little distortion is appeared, then adjust the a).

3.Turn the screw 2 to set the audio level to maximum.

4.Confirm that the bottom of the Audio/ Control Head and the bottom of the tape is shown in Fig. 2-2-C.

c)When the height is not correct, turn the screw 3 to adjust the height. Then, adjust the 1~3 again.

Audio/Control Head

Reflected picture of

Stamp Mark

P4 Post

Stamp Mark

Fig. 2-2-A

Audio/Control Head

31

2

4

Fig. 2-2-B

Audio/Control Head

Tape

2-3: TAPE RUNNING ADJUSTMENT

(X VALUE ADJUSTMENT)

1.Confirm and adjust the height of the Reel Disk.

(Refer to item 1-1)

2.Confirm and adjust the position of the Tension Post.

(Refer to item 1-2)

3.Adjust the Guide Roller. (Refer to item 2-1)

4.Confirm and adjust the Audio/Control Head.

(Refer to item 2-2)

5.Connect CH-1 of the oscilloscope to TP4001, CH-2 to TP4002 and CH-3 to HOT side of Audio Out Jack.

6.Playback the VHS Alignment Tape (JG001U or JG001V).

(Refer to SERVICING FIXTURE AND TOOLS)

7.Press and hold the TRACKING-AUTO button on the remote control more than 2 seconds to set tracking to center.

8.Set the X Value adjustment driver (JG153) to the 4 of Fig. 2-2-B. Adjust X value so that the envelope waveform output becomes maximum. Check if the relation between Audio and Envelope waveform becomes (1) or (2) of Fig. 2-1-A.

0.25±0.05mm

Fig. 2-2-C

D1-3

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Contents HV-FX5100 K Table of Contents Servicing Notices on Checking Important NoticeDisassembly Instructions Removal of Mechanical Parts and P.C. BoardsRemoval of Deck Parts Link Assy Refer to Fig Tension Assy Refer to -9-ALoading Motor Assy Refer to Fig Sensor Cover L Refer to FigRefer to Mechanical Adjustment REEL/T Reel Assy Refer to FigPinch Roller ASSY/P5 ARM Assy Refer to -12-A 13 A/C Head Refer to -13-AAHC ASSY/CYLINDER Unit Assy Refer to Fig Capstan DD Unit Refer to FigMiddle GEAR/MAIN CAM Refer to -17-A Clutch Assy Refer to FigB2-5 Loading Gear S/T Assy Refer to -19-AInclined S/T Assy Refer to Fig C1-1 KEY to AbbreviationsDD Unit KEY to Abbreviations C1-2Service Mode List Confirmation of Using HoursAdjustment PG Shifter Method OperationsC3-1 Preventive Checks and Service IntervalsConfirmation of Using Hours Cleaning C3-2C4-1 Servicing Fixtures and Tools Preparation for ServicingVCR Test Tape Interchangeability Table C6-1Mechanical Adjustments Confirmation and AdjustmentUsing a Cassette Type Torque Tape JG100A D1-1Confirmation and Adjustment of Tape Running Mechanism Confirmation and Adjustment of AUDIO/ Control Head D1-3Mechanism Adjustment Parts Location Guide D1-4Electrical Adjustments Basic AdjustmentMODE-PLAYBACK D2-1D2-2 Electrical Adjustment Parts Location GuideSyscon PCB Troubleshooting Guide Power does not Turn onBelt Capstan Power Shuts OFFLoading BELT, DD Motor Power Block Cylinder not Rotating During Playback and RecordingAudio Shakes Loading Block Cassette Tape is Not AcceptedCassette Loading When Inserting CASSETTE, IT Ejects Immediately Cassette Loading BlockFF/REW do not Work Head Switching Tape Loading is OK But Unloads ImmediatelyPlayback Picture Jitters Horizontally Playback Picture ShakesAuto Tracking does not Operate Troubleshooting Guide Playback Picture Jitters Vertically No Playback Picture CylinderNo Color During Playback Playback Picture is Noisy No Color During Self Recording and Playback No Normal Audio On Playback Capstan DD Motor not Rotating Audio can not be Recorded Cassette in and Down Unit has no Functions Does Video signal Appear at pin 31 IC4001 ? Yes Check Video No E-EVIDEO Audio from TunerCheck Audio No E-E Audio Mono AudioNo E-E Audio Stereo Audio MonoNo Tuner Audio Mono No Tuner Audio Stereo Troubleshooting Guide Hi-Fi Audio Cannot be IC Descriptions Pin No Pin Name DescriptionPower on L ONE Touch PBPeli CTL MUTE-HServo Timing Chart DPG *6PIN DFG *7PINSync E-E *4PIN REC CTL REC 7PIN Sync Trick PB !3PIN Waveform Changes Depended on the Tape SpeedRVS System Switch ModeFWD Semiconductor Base Connections DiodeAUDIO/HEAD AMP Block Diagram System CONTROL/SERVO/TIMER Block Diagram TUNER/HIFI/21PIN/OSD/VPS/NICAM Block Diagram Operation Block Diagram Power Block DiagramPower Syscon SERVO/TIMERRsqy Y6A Printed Circuit Boards Printed Circuit Boards Syscon Q1005 1005 UYN X5F 9aW7gR7nag gQVSOiWQ RWOUdO 0gsgQ aQP1 EfRc6UVSV dPURNeVP QVNTcN W488 SXheaPu hRWTbPjXR SXPVgPb UYSP‘ X59B AUDIO/HEAD AMP SYSCON/SERVO/TIMERWaveforms Mechanical Exploded View Syscon PCB AssyOperation 2 PCB Assy Operation 1 PCB AssyL2-1 Mechanical Replacement Parts ListAccessory Replacement Parts List Chassis Exploded View TOP View M1-1Chassis Exploded View Bottom View M1-2Chassis Replacement Parts List M2-1Electrical Replacement Parts List Syscon PCB AssyCORE,BEADS BF40DTA-3.5 Others

HV-FX5100 specifications

The Aiwa HV-FX5100 is a remarkable piece of technology that showcases Aiwa’s commitment to innovation and quality in the realm of home entertainment. Released as part of their VHS video cassette recorder lineup, the HV-FX5100 quickly gained popularity for its advanced features and user-friendly design.

One of the standout characteristics of the Aiwa HV-FX5100 is its impressive playback quality. The machine delivers crisp and clear video resolution, thanks to its advanced video processing technology. This ensures that viewers experience a vibrant picture with natural color reproduction, enhancing the viewing experience for VHS tapes.

The Aiwa HV-FX5100 is equipped with a range of functionalities that cater to the needs of modern consumers. A key feature is its Time Base Correction (TBC) technology, which helps eliminate jittery video, making it particularly useful for viewing older tapes or those that have been recorded on different machines. This technology significantly enhances the stability of the video playback, allowing for a smoother viewing experience.

Another notable feature of the HV-FX5100 is its built-in digital tuner, which allows users to receive and record digital broadcasts. This helps bridge the gap between analog recordings and the growing trend towards digital content, making it a versatile addition to any home entertainment system.

The design of the Aiwa HV-FX5100 also reflects its ease of use. With a straightforward interface and intuitive remote control, users can navigate and control the unit effortlessly. The VCR includes features like auto-tuning and programmed recording, which make it incredibly convenient for users to schedule recordings with minimal hassle.

In terms of connectivity, the Aiwa HV-FX5100 is equipped with various input and output options, including RCA connectors and S-Video outputs, allowing for seamless integration with TVs and other audiovisual equipment. This flexibility ensures that users can enjoy their favorite content across different media formats.

Furthermore, the construction of the HV-FX5100 is robust, promising longevity and durability. This makes it a reliable choice for those who want a dependable VCR to preserve and play their video collections.

Overall, the Aiwa HV-FX5100 stands out not just for its impressive list of features but also for its ability to adapt to both vintage and contemporary media needs. It represents a perfect harmony of classic technology and modern consumer demands, making it a treasured device for video enthusiasts.
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