Panasonic NV series VHS - M type video recorder wear fault maintenance methods of systems -Service Manual Download|Circuit Download|Download Drawings|schematic download|route map download|free download user manual

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Panasonic NV series VHS - M type video recorder wear fault maintenance methods of systems

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(5) the tape running situation (compatibility).

Compatibility refers to the video recording shows band, with another video replay can be intact, vice versa. As a result of replacement or modulated sound/control heads, in order to keep the video recorder has a good interchangeability, adjustments must be in the following order.

1. The height of the rotating guide pillar P2, P3 adjustment (adjustment method with former).

2. Adjust the sound/control the inclination of the head.

(1) the replay shows belt, and make sure the tape is in the limit of guide pin P4 run between high and low limit, otherwise should repeat (3).

(2) if the tape on the edge and bottom edge fluctuate or crease, should turn (as shown in figure 3) behind the screw/control head B, the correction of the sound/control the inclination of the head, to tape, fluctuations or fold at the bottom of the disappeared

3. Adjust the sound/control the height of the head

(1) in the process of tape run, carefully observe whether the bottom edge of the tape running along the bottom edge of the control head.

(2) if not, you should gently turn the nut behind C/control head, reduce or increase the sound/control head.

(3) the tape running along the lower edge of the control head (clockwise turn nut C, lower the head, anticlockwise turn nut C, elevated head).

4. Adjust the sound/azimuth control head

Connection good color TV or monitor, playback program, suitable or behind the counter clockwise to adjust the sound/control head screws D, make the output of audio signal level is the largest, the color TV set the sound speaker volume is the largest.

5. Adjust the sound/control heads of horizontal position.

Replay shows, adjust the sound/control heads to the left of the conical nut X (that is, the X value adjusting nut), to adjust its horizontal position, make the rf signal output is the largest, even if the image is clear, stable, good interchangeability.

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