5.7. COLOUR PURITY
1. Operate the TV set for over 60 minutes.
2. Receive a purity pattern signal. (white pattern)
3. Set Bright and Contrast controls to their maximum
positions.
4. Set V-POS to 63 DAC.
5. Adjust roughly the static convergence magnets.
6. Fully degauss the picture tube using an external
degaussing coil.
7. Loosen a clamp screw for the deflection yoke and move the
deflection yoke as close to the purity magnet as possible.
8. Adjust the purity magnet so that a vertical green field is
obtained at the center of the screen.
9. Slowly press the deflection yoke and set it where a uniform
green field is obtained.
10. Adjust roughly the Low Light controls and make sure that a
uniform white field is obtained.
11. Tighten the clamp screw.
5.8. CONVERGENCE
1. INSTRUMENT
a. Helmhortz device
2. PREPARATION
a. Set the Helmhortz device to local magnetic field.
Horizontal: 0 ± 0.03 x10
-4
T
b. Receive the cross hatch pattern.
c. Picture menu: DYNAMIC Normal and adjust BRIGHT
DAC until gray portion of cross hatch.
d. Set DY to CRT not to tilt (up and down and left and
right).
3. ADJUSTMENT
a. Static convergence Adjustment
a. Make sure that magnets are positioned shown in
Fig. 1.
b. Adjust 4-pole magnets (Fig. 1) to align center dots of
R and B and adjust 6-pole magnets to align center
dots to G.
c. After adjustment, secure magnets with magnet lock
of white lacquer.
*Beams move with rotating when static magnets are
turned.
Rotational reduce of beams differs by angle of two
magnets.
Therefore, repeat magnet adjustmentsseveral times
so that all are aligned completely.
Fig. 1
b. YHC, YV, XV, Adjustment (Fig. 2)
a. Adjust so that Static and Dynamic convergence is
best with YHC, VR, YV and XV coil.
In case of static convergence is tilted, repeat (1)
Static convergence Adjustment.
Fig. 2
c. Dynamic convergence Adjustment
a. When dynamic convergence is bad, fixing permalloy
between neck and DY so that dynamic convergence
is best.
4. Confirm that left upper side line is straight.
When left upper side line isn’t straight, put magnet on DY
and adjust the left upper side line to straight.
14
TX-34P180B
Содержание tx-34p180b
Страница 21: ...8 SCHEMATIC DIAGRAMS 8 1 SCHEMATIC DIAGRAM NOTES 22 TX 34P180B ...
Страница 22: ...23 TX 34P180B ...
Страница 23: ...8 2 GM BOARD 8 2 1 GM BOARD 1 2 1A 4A 5A 6A 7A 8A 9A 10A 11A 12A 3A 2A 24 TX 34P180B ...
Страница 24: ...8 2 2 GM BOARD 2 2 1A 4A 5A 6A 7A 8A 9A 10A 11A 12A 3A 2A 25 TX 34P180B ...
Страница 25: ...8 3 L BOARD 8 3 1 L BOARD 1 3 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 26 TX 34P180B ...
Страница 27: ...8 3 3 L BOARD 3 3 1B 2B 3B 6B 4B 5B 8B 10B 11B 12B 13B 14B 15B 16B 9B 7B 28 TX 34P180B ...
Страница 28: ...8 4 A BOARD 8 4 1 A BOARD 1 5 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 13A 29 TX 34P180B ...
Страница 32: ...8 4 5 A BOARD 5 5 1D 2D 3D 4D 5D 6D 7D 8D 9D 10D 11D 12D 13D 14D 15D 18D 19D 20D 16D 17D 33 TX 34P180B ...
Страница 33: ...8 5 D BOARD 8 5 1 D BOARD 1 5 1A 2A 3A 4A 3A 3A 3A 3A 3A 3A 3A 3A 34 TX 34P180B ...
Страница 36: ...8 5 4 D BOARD 4 5 1C 2C 3C 4C 5C 6C 7C 8C 9C 10C 1D 2D 3D 4D 5D 6D 7D 8D 9D 10D 11D 12D 13D 14D 37 TX 34P180B ...
Страница 37: ...8 5 5 D BOARD 5 5 1D 2D 3D 4D 5D 6D 7D 8D 9D 10D 11D 12D 13D 14D 38 TX 34P180B ...
Страница 38: ...8 6 G BOARD 8 6 1 G BOARD 1 2 1A 2A 3A 4A 39 TX 34P180B ...
Страница 39: ...8 6 2 G BOARD 2 2 1A 2A 3A 4A 40 TX 34P180B ...
Страница 40: ...9 PARTS LOCATION 41 TX 34P180B ...
Страница 41: ...10 REPLACEMENT PARTS LIST 10 1 Replacement Parts List Notes 42 TX 34P180B ...
