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5. Connect the scope probe to TPD20, GND to TPD21. Scope set at
20V/div & 5m sec./div.
6. Adjust V-PARA (Service mode1) so that waveform (A) is 380V ±
20V.
(Fig. 3
)
7. Adjust H-PARA (Service mode1) so that waveform (B) is 560V ±
40V.
(Fig. 3
)
8. Proceed with Focus Adjustments.
7.2. Electrical Focus Adjustment
1. Receive a monoscope pattern.
2. Cover the Red and Blue CRT, projecting Green only.
The electrical focus controls are located on the front. Adjust the
Green Focus VR for best focus of overall picture.
3. Repeat for Red focus VR while projecting Red only.
4. Repeat for Blue. (Best focus at bottom left corner of screen)
7.3. Optical Lens Focus Adjustment
Note:
This adjustment normally should not require resetting unless the lens has been replaced or
adjustment has changed.
1. Optical focus adjustment is located on the top of each CRT lens
system. Loosen the adjustment knurls locking knob. (Fig. 4)
Fig. 3
Fig. 4 (Rear view)
22
(Fig. 2
)
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