Toshiba 42WH36P Service Manual page 16

Green Alignment/Astigmatic Adjustments
Adjustment items
Alignment Adjustment
Astigmatic Adjustment
Procedures (Make this adjustment by using a lens cap. This adjustment should be
made after adjusting the electrical focus nd lens focus rough and making a
Centering Adjustment.)
1. Set the G monochrome by a lens cap.
2. Cancel the magnetic fields of bipolar, tetrapolar, hexapolar magnets.
3. Receive the image of dot pattern which is generated by the signal generator.
(White dot, Black background)
4. Turn the focus VR slightly left from the just focus point.
5. Adjust the bipolar magnet so that the dark brightness point is center of the light
bright area.
6. Make a just focus adjustment.
7. Receivethe image of Philips pattern, and re-adjust the centering.
8. Repeat the above items 4 to 7. Re-adjust those items if necessary.
Light area (flare)
Dark point
Procedures (Make this adjustment by using a lens cap.)
1. Set G monochrome by a lens cap.
2. Input the dot pattern (white dot and black backgroud).
3. Turn the Focus VR slightly right from the just focus point.
4. Adjust the tetrapolar magnet so that the fuzzy dot is a perfect circle.
5. Check and confirm that the shapes of flare are almost the same circle even if
turing the VR focus right and left.
6. Make a just focus adjustment.
7. Affix the magnet with adhesives.
Make adjustment so that the dot is a perfect circle.
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Adjusting methods