Omnivision PVQ-130W Service Manual page 90

4. Confirm the height of the Audio Control Head is proper. If not, readjust Black
Screws (A) and (B).
7.2.2.3.5. AUDIO CONTROL HEAD HORIZONTAL POSITION ADJUSTMENT
Purpose:
To adjust the Horizontal Position of the Audio Control Head.
Symptom of Misadjustment:
If the Horizontal Position of the Audio Control Head is not properly adjusted, a
maximum envelope cannot be obtained at the Neutral Position of the Tracking
Control Circuit.
1. Place a jumper between TP6003 and +5V(TP6009) on the TV/VCR Main C.B.A. to
defeat Auto Tracking.
2. Eject the tape and insert it again to access the Neutral Tracking position.
3. Play back the alignment tape.
4. Connect the oscilloscope to TP3002 on the Video Signal Process Section of the
TV/VCR Main C.B.A. Use TP6205 as a trigger.
5. Loosen the Black Screw (D) and tighten it slightly. Set the H-Position Adjustment
Driver into the Hole (A). Then slowly turn the fixture either clockwise or
counterclockwise so that the envelope is at maximum.
Fig. M7
Fig. M8
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