— 18 —
KV-32XBR200/KV-36XBR200
( 2 ) Dynamic Convergence Adjustment
•
Before starting, perform Horizontal and Vertical
Static Convergence Adjustment.
1. Slightly loosen deflection yoke screw.
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence as
shown below:
R
G
B
B
G
R B G R
R G B
R G B
B G R
R G B
B G R
R
G
B
B
G
R
B G R
R G B
4. Tighten the deflection yoke screw.
5. Install the deflection yoke spacers.
6. Adjust vertical red and blue convergence with
VLT (VR).
7. Adjust horizontal red and blue convergence with
YCH (VR).
(3) Screen-corner Convergence
Affix a permalloy assembly to correspond with the
misconverged areas:
a-d: screen-corner
misconvergence
b
c
a
d
b
c
a
d
3-3. FOCUS
Adjust FOCUS control for best picture.
FOCUS
SCREEN
3-4. SCREEN (G2)
1. Input dot pattern from the pattern generator.
2. Set the PICTURE and BRIGHT controls at normal.
3. Adjust S BRT, G CUT, B CUT in service mode with an
oscilloscope so that voltages on the red, green, and blue
cathodes are 170V + 2 V DC.
4. Observe the screen and adjust SCREEN (G2) VR on FBT
to obtain the faintly visible background of dot signal.
3-5. WHITE BALANCE ADJUSTMENTS
NO.
Disp.
Item
Average
18
GDRV
Green Drive
31
19
BDRV
Blue Drive
25
20
GCUT
Green Cut-off
3
21
BCUT
Blue Cut-off
10
29
SBRT
Sub Bright
30
1. Input an entire white signal.
2. Set to Service adjustment Mode.
3. Set the PICTURE and BRIGHT to minimum.
4. Adjust with SBRT if necessary.
5. Select GCUT and BCUT with
1
and
4
.
6. Adjust with
3
and
6
for the best white balance.
7. Set the PICTURE and BRIGHT to maximum.
8. Select GDRV and BDRV with
1
and
4
.
9. Adjust with
3
and
6
for the best white balance.
10. After adjusting the white balance, adjust the white balance
video four as follows:
NO.
Disp.
Item
22
4GDR
Green Drive GDRV+2
23
4BDR
Blue Drive BDRV +1
24
4GCT
Green Cut-off GCUT
25
4BCT
Blue Cut-off BCUT-1
11. Write into the memory by pressing
then
.
Calculate the
Average Data
NNNNN
NNNNN
pedestal
180 V dc
NNNNN
GND
170 + 2 V DC
