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3-3. SCREEN (G2), DRIVE, WHITE BALANCE,
SUB COLOR and SUB BRIGHTNESS.
Screen (G2) setting
1. Input a 0 IRE (Black Level) signal from the pattern
generator.
2. Enter into the Service Mode "ON SCREEN DIS" "DIGIT 5"
"VOLUME +" "TV" then select " G2 " with " 1 " or " 4 " key.
3. Adjust RV703 until the Down arrow is displayed.
4. Adjust RV703 until the Down arrow just disappears.
5. Press the TV Button on the Remote Commander to store
the data.
Drive Level
1. Input a Video signal containing a small area of 100%
white on a black background.
2. Connect an oscilloscope to Pin 7 of J701 (R OUT)
on the C Board.
3. Set the Picture to maximum.
4. Enter into the Service mode.
5. Using the "1" and "4" buttons select "RIN".
6. Using the "3" and "6" buttons on the Remote Commander
adjust until the oscilloscope waveform has
an amplitude of 95V.
White Balance Adjustment
1. Input an all white pattern from the pattern generator.
2. Adjust the Color and Brightness controls to the standard
level.
3. Enter into the Service Mode.
4. Adjust the "GIN" and "BIN" so that the
White Balance becomes optimum.
C board
RV703
95V
Sub Color Adjustment
1. Input a PAL color bar pattern from the pattern generator.
2. Connect an oscilloscope to Pin 5 of J701 (B OUT)
on the C Board.
3. Enter into the Service Mode "ON SCREEN DIS" "DIGIT 5"
"VOLUME +" "TV" then select " G2 " with " 1 " or " 4 " key.
4. Using the "3" and "6" buttons on the Remote
Commander adjust until the oscilloscope waveform
becomes as follows :
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 "ON SCREEN DIS" "DIGIT 5"
"VOLUME +" "TV" then select " G2 " with " 1 " or " 4 " key.
3. Using the "3" and "6" 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.
4. You must write all adjusted data in service mode as following
procedure Push " " then "0" by remote commander.
3-4. FOCUS
Adjust the FOCUS control RV704 so that the whole screen is in
best focus.
– 29 –
SAME LEVEL
FOCUS
SCREEN
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