6557-03N/03S/43N/43S
SECTION 4
ADJUSTMENTS
? Landing Rough Adjustment<Specifications>(?m)
1. Enter the full white signal. (or the full black dots signal).Adjust so that the green is within0 ? 4 0 ? 7.5 0 ? 4
2. Adjust the contrast to the maximum.the specification given right.0 ? 4 0 ? 50 ? 4
3. Make the screen monogreen.4 corner adjust target : within ? 10 ? 4 0 ? 7.5 0 ? 4
Note: Off the outputs from R ch and B ch of SG.
4. Reverse the DY, and adjust coarsely the purity magnet so(?m)
that a green raster positions in the center of screen.The red and blue must be within? 5? 5? 5
5. Adjust the tilt of DY, and fix lightly with a clamp.the specification given right with? 5? 5? 5
Note: OTILT� shall be set at 128.respect to the green.? 5? 5? 5
(?m)
? Landing Fine AdjustmentA difference between red and
1. Put the set inside the Helmholtz coil.888
2. Input the single green signal and set the OCONTRAST� toblue must be within the specifi-878
MAX.cation given right.888
<Landing adjustment luminance>
Landing adjustment after 2 hours of aging by Landing adjust-
ment luminance.* Adjustment and measurement should be made at the points one
inch inside the fluorescent screen.
*Landing adjustment luminance
:same luminance on aging (Reference: SIK=250uA)
*Max luminance8. Tighten DY screw.
: 110 ch/m SIK=750uATorque: 22?2 kgcm (2.2?0.2 Nm)
3. Demagnetize the metal part of the chassis with the hand de-Auto-degauss it.
gausser and coil degausser, and the CRT surface with the9. Adjustment each top and bottom pins by switching DY neck
hand degausser.up-down, and adjust V. TILT and horizontal trapezoid by
Input AC 230V to AC IN, turn on and off the power to per-swinging DY neck right-left. And then fix with 4 wedges.
form auto degaussing. (Perform auto degaussing by setting(Insert wedge certainly so that the DY will not loosen.)
OMON CON REG2�=152. Return to the original value after
use.)Fixing DY with wedges.
a
Demagnetize the CRT surface with the hand degausserOa� and Ob� must be equal, and
again.Oc� and Od� must be almost equal.
Note:
cd
(1)Adjust in a non-magnetic field. BV=45uT.
(2)If adjusting in a magnetic fields, add the shift from theb
non-magnetic field in your estimation.
4. Attach the wobbling coil to the designated part of the CRT<How to drive in wedges>
neck.Apply a locking agent to the up-
5. Pull the TLH plate nooked on stopper.per wedges only.
6. Attach the sensor of the landing adjustment unit on the CRT
surface.In such a case, apply agent so that
it enters both sides of wedge and
7. Adjust the DY position and purity, and the DY tilt, and land-also inside the DY.
ing of the center and 4 corners with the landing checker.
Purity Adjustment use 2-pole magnet on DY side, Don't use
on Neck Assy one.10. Check landing at each corner and in case not in specification,
adjust by sticking disk magnets on CRT funnel. (After plac-
ing disk magnets, absolutely hand degauss and check the re-
sults.)
11. Remove the sensor and wobbling coil.
12. Check that the DY is not tilting. Then, fix purity magnets
with white paint and fix wedge with RTV.
4-1 |
ACEC
