D2846
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 ? 3 0 ? 7.5 0 ? 3
2. Adjust the contrast to the maximum.the specification given right.0 ? 5 0 ? 5 0 ? 5
3. Make the screen monogreen.4 corner adjust target : within ? 1
0 ? 3 0 ? 7.5 0 ? 3
Note: Off the outputs from R ch and B ch of SG.(?m)
4. Reverse the DY, and adjust coarsely the purity magnet so that
? 6 ? 6 ? 6The red and blue must be within
a green raster positions in the center of screen.the specification given right with
5. Adjust the tilt of DY, and fix lightly with a clamp. ? 6 ? 4 ? 6respect to the green.
Note: OTILT� shall be set at 0. ? 6 ? 6 ? 6
(?m)
? Landing Fine AdjustmentA difference between red and blue
1. Put the set inside the Helmholtz coil. (OLCC SW� = O12�)must be within the specification101010
2. Input the single green signal and set the CONT control togiven right.10710
MAX.101010
Note: After the W/B adjustment with 9300K, measure an average
of SIk when a full white signal is entered in the CONT* Adjustment and measurement should be made at the points one
inch inside the fluorescent screen.
MAX/BRT CENT status. Then make adjustment so that the
specified screen can be attained after aging for 2 hours with7. For the up/down swing, swing the DY and insert a wedge so
that the up and down pins are equal at the top and bottom.
Ik equivalent to 30% of the average value.
3. Demagnetize the metal part of the chassis with the hand de-Adjust the DY TLV VR so that the horizontal trapezoid is
gausser and coil degausser, and the CRT surface with theequal at the left and right. Insert the wedge firmly so that the
hand degausser.DY does not shake.
Input AC 230V to AC IN, turn on and off the power to per-8. Check the landing of each corner, and if it does not satisfy the
specification, adjust the landing of four corners using OLCC
form auto degaussing. (Perform auto degaussing by setting
OMON CON REG2�=152. Return to the original value afterLTO, OLCC LB�, OLCC RT� and OLCC RB�.
However, the register adjustment must be limited within the
use.)
Demagnetize the CRT surface with the hand degausser again.following range.
OLCC NS�128 ? 15
Note:
(1) Hand degauss must be used on stand-by or power-off condi-OLCC LT�, OLCC LB�, OLCC RT�, OLCC RB� 128 ? 40
After adjustment, save the service data.
tion.
This model has an automatic earth magnetism correction9. Remove the sensor and wobbling coil.
10. Switch the signal to R.G.B., and check that each color is pure.
function by using an earth magnetism sensor and a LCC coil.
When using a hand degauss while monitor (LCC coil) is being11. Check that the DY is not tilting.
operated, it sometimes gets magnetized, and the system may
not work properly as a result.
(2) Adjust in a non-magnetic field. BV=45uT.
(3) If adjusting in a magnetic fields, add the shift from the non-
magnetic field in your estimation.
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 land-
ing of the center and 4 corners with the landing checker.
After adjustment, set OLCC SW� to O13�.
? Write terrestrial magnetism sensor reading VX and VY to
OLCC VX� and LCC VY� respectively. Adjust the landing
by moving OLCC NS�, OLCC LT�, OLCC LB�, OLCC RT�
and OLCC RB�. However, the register adjustment must be
limited within the following range.
OLCC NS�128 ? 15
OLCC LT�, OLCC LB�, OLCC RT�, OLCC RB�
128 ? 40
Save the service data.
� 19 � |
ACEC
