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Text excerpt from page 86 (click to view)
slightly and equally adjust Screw A, Screw B, and Screw C on the A /C Head Unit to achieve the sub control signal level of 500 mV200 mV. (Sub Control Signal level will decrease when rotating screws clockwise, and increase when rotating screws counterclockwise.)
184.108.40.206.3. A/C HEAD AZIMUTH ADJUSTMENT
Purpose: To adjust the position and height of the A/C Head so that it meets the tape tracks properly. Symptom of Misadjustment: If the position of the A/C Head is not properly adjusted, the Audio S /N Ratio will be poor. 1. Connect the Audio/Video Cable on the camcorder. 2. Connect the oscilloscope to audio output jack. 3. Playback the Alignment Tape (VFMS0004H6C). 4. Adjust Screw C (Azimuth) on the A/C Head Unit so that the output level is at maximum.