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SECTION 4 ADJUSTMENTS
� Landing Rough Adjustment 1. Enter the full white signal. 2. Set the contrast to �CONT�=255. 3. Make the screen monogreen. Note: Off the outputs from R ch and B ch of SG. 4. Reverse the DY, and adjust coarsely the purity magnet so that a green raster positions in the center of screen. 5. Moving the DY forward, adjust so that an entire screen becomes monogreen. 6. Adjust the tilt of DY, and fix lightly with a clamp. Note: "TILT" shall be set at 0. � Landing Fine Adjustment 1. Put the set inside the Helmholtz coil. 2. Input the single green signal and set the CONT control to MAX. Note: Set to Σ 1k=300 µA with the signal green signal, and after aging for about 30 minutes, adjust so that it is exactly this value. 3. Demagnetize the CRT surface with the hand degausser , and perform auto degaussing. Note: Adjust in s non-magnetic field. 4. Attach the wobbling coil to the designated part of the CRT neck. 5. Attach the sensor of the landing adjustment unit on the CRT surface. 6. Adjust the DY position and purity, and the DY tilt, and landing of the center and 4 corners with the landing checker. Purity
CPD-2001G
Adjust the green of corners 1 to 4, and center 6 to ±5 µm, and red and blue to within ±7 µm of green, and the difference between red and blue to within ±10 µm. Adjust the green of 5 and 7 to within ±10 µm, and red and blue to within ±7 µm of green, and the difference between red and blue to within ±10 µm. (Set each corner to 1st frame of the crosshatch.) 7. For the up/down and left/right swing, swing the DY and insert 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 and right. Insert the wedge firmly so that the DY does not shake. Signals: Inverted crosshatch signal (monochrome G) and crosshatch signals (B and R) a c b B R R B RB BR or C D C� D� C and D, or C� and D� must be almost equal. A B or �a� and �b� must be equal, and d �c� and �d� must be almost equal. A� B� A and B, or A� and B� must be almost equal.
A
B
<How to drive in wedges>
A=B
Drive in wedges as shown in the left figure, and apply RTV as shown with hatched lines. ¨ As viewed from a neck side
<Specification>
1
5 6
2
8. Check the landing of each corner, and if they do not satisfy the specification, paste a Disk-Mg onto the funnel and adjust. Note: (1) Do not paste more than 2 magnets to one corner. (2) Paste within 80 to 100 mm from the DY on the diagonal line of the magnet. (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 ±2kg·cm
