CPD-2001G
SECTION 4
ADJUSTMENTS
Y Landing Rough AdjustmentAdjust the green of corners 1 to 4, and center 6 to ?5 ?m, and
1. Enter the full white signal.red and blue to within ?7 ?m of green, and the difference be-
2. Set the contrast to OCONT�=255.tween red and blue to within ?10 ?m.
3. Make the screen monogreen.Adjust the green of 5 and 7 to within ?10 ?m, and red and blue
Note: Off the outputs from R ch and B ch of SG.to within ?7 ?m of green, and the difference between red and
4. Reverse the DY, and adjust coarsely the purity magnet soblue to within ?10 ?m.
that a green raster positions in the center of screen.
5. Moving the DY forward, adjust so that an entire screen be-(Set each corner to 1st frame of the crosshatch.)
comes monogreen.
6. Adjust the tilt of DY, and fix lightly with a clamp.7. For the up/down and left/right swing, swing the DY and in-
Note: "TILT" shall be set at 0.sert a wedge so that the up and down pins are equal at the top
and bottom and the horizontal trapezoid is equal at the left
Y Landing Fine Adjustmentand right. Insert the wedge firmly so that the DY does not
1. Put the set inside the Helmholtz coil.shake.
2. Input the single green signal and set the CONT control toSignals: Inverted crosshatch signal (monochrome G)
MAX.and crosshatch signals (B and R)
Note: Set to S 1k=300 ?A with the signal green signal, and after
aging for about 30 minutes, adjust so that it is exactly thisa
value.Oa� and Ob� must be equal, and
3. Demagnetize the CRT surface with the hand degausser , andcd Oc� and Od� must be almost
perform auto degaussing.equal.
b
Note: Adjust in s non-magnetic field.
4. Attach the wobbling coil to the designated part of the CRT
B
neck.RAAOA and B, or AO and BO must be
5. Attach the sensor of the landing adjustment unit on the CRToralmost equal.
R
BBO
surface.B
6. Adjust the DY position and purity, and the DY tilt, and land-RBBR
ing of the center and 4 corners with the landing checker.C and D, or CO and DO must be
or
almost equal.
PurityCDCO DO
AB
<How to drive in wedges>
Drive in wedges as shown in the
A = B
left figure, and apply RTV as
shown with hatched lines.
? As viewed from a neck side
<Specification>8. Check the landing of each corner, and if they do not satisfy
the specification, paste a Disk-Mg onto the funnel and ad-
just.
5Note:12
(1) Do not paste more than 2 magnets to one corner.
6
(2) Paste within 80 to 100 mm from the DY on the diagonal line
of the magnet.
374
(3) If using the magnet, be sure to demagnetize with the hand
degausser and check.
9. Remove the sensor and wobbling coil.
10. Switch the signal to R.G.B., and check that each color is
pure.
11. Check that the DY is not tilting, and fix the purity Mg with a
white pen.
12. Fasten DY with screw.
Note: Torque 20 ?2kgácm
4-1 |
ACEC
