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(3)
Screen corner convergence.
If you are unable to adjust the corner convergence properly,
correct them with the use of permalloy assemblies.
screen-corner
convergence defect'
Install the permalloy assembly
for the section with fault
Permalloy
KV-29F3
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 | on the A board.
3.
Adjust RVO1 to obtain a voltage of 3.0V +0.3V.
White balance adjustment
Input an all white signal from the pattern generator.
Enter into the service mode.
Enter into Picture Adjustment service menu.
Seléct sub-contrast and adjust to 7.
Select the Green Drive and adjust so that the white balance
becomes optimum.
Select the Blue Drive and adjust so that the white balance
becomes optimum.
7. Press the TV button to return to TV operation.
ie
oe or
Oy
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
le)
Pre / overshoot
0
Y delay
3
—29—
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