2-10
PVM-14L1/14L1MDE/20L1
SSM-14L1/20L1
2-9. Convergence Adjustment (2)
Fig. 2-26 Convergence compensation VR, coil, and
compensator
n
When adjustment is insufficient, use permalloy.
After the adjustment, use paint lock.
1. Input a crosshatch signal.
2. Adjust TLV, YCH VR of DY, XCV coil to minimize
mis-convergence.
When the right convergence is not gotten even after
adjustment described above, use the permalloy sheet to
adjust and fix the permalloy with RTV.
R
B
R
RB
G
BR
G
B
G
G
YCH (For 14 inch)
R
B
G
R
B
G
XCV
TLV (14 inch: VR, 20 inch: compensation plate)
TLH (For 14 inch)
2-10. Landing Adjustment (2)
1. Attach the wobbling coil of allowance checker to neck
ass’y.
2. Input green flat field signal to LINE A.
3. Turn on the main power of the monitor, and degauss
CRT screen with a degausser.
4. Receive white flat field signal, and set brightness to 0,
contrast to 80.
5. Make sure that there is no flicker when changing input
signals among G, B, and R signals.
6. Select G signal and adjust the purity.
7. In case that flicker occurs in a flat field signal, adjust
with Mg.
8. When attaching a Mg, it should be on a centre line
between CRT and the mislanding area.
9. Rotate the Mg to eliminate the mislanding.
10. Confirm that there is no mislanding on the other
colours.
11. Remove the air-core coil. Check uniformity in white
flat field signal.
12. Lock purity with white paint.
13. Confirmation after Mg is attached.
a. Deflection distortion
b. Landing after degaussing CRT
c. Convergence
d. Attach Mg to DY with bond.
2-11. Focus Adjustment
1. Input 480/60I cross hatch-signal.
2. Adjust the focus so that the center of screen is the best.
14 inch RV750 (C board)
20 inch VR on the upper side FBT
3. Input 480/60I entire white signal and ensure the
uniformity of entire screen.
Specification : 4 JND or less
To Next Page
Loading...
