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Measurement And Adjustment Of Back Tension - Panasonic PV-4601 A Service Manual

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4.1.3.5. MEASUREMENT AND ADJUSTMENT OF BACK TENSION

Purpose :
To fine adjust the Back Tension so that the tape runs smoothly with a constant
tension.
Symptom of Misadjustment :
1) If the tape tension is less than the specified value, the tape cannot come into
proper contact with the Video Heads, resulting in poor picture playback.
2) If the tape tension is too high, the tape will soon be damaged.
A: Measurement Procedure
*Equipment Required :
Back Tension Meter (Made in U.S.A., Purchase Locally)
Fig. M7
59

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