— 27 —
KV-28WF1
a—d: angoli dello
schermo non in
convergenza.
a
b
c
d
(3)
Screen corner convergence.
If you are unable to adjust the corner convergence properly,
correct them with the use of permalloy assemblies.
Permalloy
Install the permalloy assembly
for the section with fault
a-d:
screen-corner
convergence defect
3-3. WHITE BALANCE
1.
Switch the set into AV mode (apply no signal to the AV
connectors).
2.
Connect a Volt Meter to Test Point 1 on the A board.
3.
Adjust RV01 to obtain a voltage of 3.0V ±0.3V.
1.
Input an all white signal from the pattern generator.
2.
Enter into the service mode.
3.
Enter into Picture Adjustment service menu.
4.
Select sub-contrast and adjust to 7.
5.
Select the Green Drive and adjust so that the white balance
becomes optimum.
6.
Select the Blue Drive and adjust so that the white balance
becomes optimum.
7.
Press the TV button to return to TV operation.
G2 Setting
White balance adjustment
PICTURE ADJUSTMENT
AFC mode
1
REF position
2
SCP BGR
1
SCP BGF
1
Trap Fo
0
Sub contrast
Adj
Sub colour
Adj
Sub brightness
Adj
Sub hue
Adj
Green drive
Adj
Blue drive
Adj
Green cutoff
Adj
Blue cutoff
Adj
Gamma
0
Pre / overshoot
0
Y delay
3
c
a
d
b
Summary of Contents for KV-28WF1A
Page 6: ......
Page 7: ......
Page 8: ......
Page 9: ......
Page 10: ......
Page 11: ......
Page 12: ......
Page 13: ......
Page 14: ......
Page 15: ......
Page 16: ......
Page 17: ......
Page 18: ......
Page 19: ......
Page 38: ......
Page 39: ......
Page 40: ......
Page 41: ......
Page 42: ......
Page 43: ......