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properly adjusted, a maximum envelope cannot be obtained at the
Neutral Position of the Tracking Control Circuit.
1. Place a jumper between TP6003 and +5 V(TP6009) on the 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 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.
6. Tighten Black Screw (D).
7. Remove the jumper between TP6003 and +5 V(TP6009).
Note:
Old type of H-Position Adjustment Driver (VFK0136) can be used for
this adjustment.
7.3. ELECTRICAL ADJUSTMENT
NOTE:
Following Adjustments have been preadjusted at factory and are
not required.
- Purity Adjustment
- Static Central Convergence Adjustment
- Dynamic Convergence Adjustment
7.3.1. TEST EQUIPMENT
Fig. M7
56
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