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KV-21M3/21T3
3-3.
SCREEN(G2), DRIVE, WHITE BALANCE,
SUB COLOUR and SUB BRIGHTNESS.
—
Input a PAL colour bar pattern from the pattern generator.
2.
Connect an oscilloscope to Pin
8 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 :
eo
aes ae
SAME LEVEL
|
|
B. OUT
SCREEN
Screen
(G2) settin
|
:
2)
g
Note : If the TV is able to receive PAL and SECAM
1.
Input a 0 IRE (Black Level) signal from the pattern
generator.
Adjust SCREEN VR until the Down arrow just disappears.
Press the TV Button on the Remote Commander to store
I.
the data.
2.
Aes
Ie
transmissions, repeat the above procedure using a Secam
colour bar signal.
Enter into the Service Mode "Test'Test" and 38.
:
:
Adjust SCREEN VR until the Down arrow is displayed.
Sub Brightness Adjustment
Input a Philips pattern from the pattern generator.
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.
1.
Input a Video signal containing a small area of 100%
white on a black background.
3-4.
FOCUS
2.
Connect an oscilloscope to Pin
10 of J701 (R OUT)
1.
Receive a television broadcasting.
on the C Board.
2.
Normalize the picture setting.
3. Set the Picture to maximum using "Test""Test" and 01.
3. Adjust the focus control on the flyback transformer to
4,
Enter into the Service mode (Adjust Menu).
become the focus in the centre area properly.
5. Using the Blue and Green buttons select "RED HWB".
Bring only the centre area of the screen into focus, the
6. Using the Red and Yellow buttons on the Remote
magenta-ring appears on the screen. In this case, adjust the
Commander adjust until the oscilloscope waveform has
an amplitude of 85V.
<ii=
[|
85V
!
White Balance Adjustment
1.
Input an all white pattern from the pattern generator.
2.
Adjust the Colour and Brightness controls to the standard
level.
Enter into the Service Mode.
Soe
Les
focus to optimize the screen uniformly.
Fous
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