Focus; Screen (G2); White Balance Adjustment - Sony TRINITRON KV-32FV1 Service Manual
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Also See for TRINITRON KV-32FV1:
- Operating instructions manual (37 pages) ,
- Operating instructions manual (37 pages)
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( 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
B G R
G
R G B
B
R G B
B G R
B
R G B
G
R B G R
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
b
a
a-d: screen-corner
misconvergence
c
d
3-3. FOCUS
Adjust FOCUS control for best picture.
B
G
R
B G R
R G B
R
G
B
b
c
d
FOCUS
SCREEN
— 15 —
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.
170 + 2 V DC
170Vdc
GND
3-5. WHITE BALANCE ADJUSTMENTS
NO.
Disp.
Item
18
GDRV
Green Drive
19
BDRV
Blue Drive
20
GCUT
Green Cut-off
21
BCUT
Blue Cut-off
29
SBRT
Sub Bright
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.
Select GCUT and BCUT with 1 and 4 .
5.
Adjust with 3 and 6 for the best white balance.
6.
7.
Set the PICTURE and BRIGHT to maximum.
Select GDRV and BDRV with 1 and 4 .
8.
Adjust with 3 and 6 for the best white balance.
9.
10. After adjusting the white balance, adjust the white balance
video four as follows:
NO.
Disp.
Item
22
4GDR
Green Drive
23
4BDR
Blue Drive
24
4GCT
Green Cut-off GCUT
25
4BCT
Blue Cut-off
11. Write into the memory by pressing
KV-32FV1/34FVL1/36FV1
pedestal
Average
36
25
3
10
30
GDRV+2
BDRV +1
BCUT-1
then
.
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