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3-3.
SCREEN (G2), DRIVE, WHITE BALANCE,
SUB COLOR and SUB BRIGHTNESS.
RV703
SCREEN
Screen (G2) setting
1.
Input a 0 IRE (Black Level) signal from the pattern
generator.
Enter into the Service Mode "Test""Test" and 38.
Adjust RV703 until the Down arrow is displayed.
Adjust RV703 until the Down arrow just disappears.
Press the TV Button on the Remote Commander to store
the data.
1.
Input a Video signal containing a small area of 100%
white on a black background.
Ot a
2.
Connect an oscilloscope to Pin Ge of J701 (R OUT)
on the C Board.
3.
Set the Picture to maximum using "Test""Test" and 01.
4.
Enter into the Service mode (Adjust Menu).
5.
Using the Blue and Green buttons select "RED HWB".
6.
Using the Red and Yellow
buttons on the Remote
Commander adjust until the oscilloscope waveform has
an amplitude of 85V.
; |
85V
White Balance Adjustment
1.
Input an all white pattern from the pattern generator.
2.
Adjust the Color and Brightness controls to the standard
level.
Enter into the Service Mode.
4.
Adjust the Green HWB and Blue HWB so that the
White Balance becomes optimum.
vs
KV-M145
Sub Color Adjustment
Input a PAL color bar pattern from the pattern generator.
2.
Connect an oscilloscope to Pin S) of J701 (B OUT)
on the C Board.
3.
Enter into the Service Mode "Test""Test" and 22.
4.
Using the Red and Yellow buttons on the Remote
Commander adjust until the oscilloscope waveform
becomes as follows :
_—
praees
SAME LEVEL
B. OUT
Note : If the TV is able to receive PAL and SECAM
transmissions, repeat the above procedure using a Secam
color bar signal.
Sub Brightness Adjustment
1.
Input a Philips pattern from the pattern generator.
2.
Enter into the Service Mode "Test""Test" and 23.
3.
Using the Red and Yellow buttons on the Remote
Commander adjust until the 0 IRE of the grey scale and the
cut off are only slightly visible on the screen.
3-4. FOCUS
Adjust the FOCUS control RV704 so that the whole screen is in
best focus.
C board
RV704
FOCUS
—19—
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