Sony Trinitron KV-32TW77 - Set-Up Adjustments (Continued); G2 (Screen) and White Balance Calibration

KV-27TW77/27TW78
KV-32TVW7 W32TW78 ;
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT(RV 702)
1. Set the PICTURE and BRIGHTNESS to normal.
2. Confirm G 1 voltage is within 30.0£5 V.
Apply DC voltage of-180 V to the cathodes of R,G
and B from DC stabilized power source.
4. While watching the picture, adjust the G2 control
(RV 702) to the just the retrace line disappears.
2. WHITE BALANCE ADJUSTMENTS
Ce a
Green. Amp
Blue Amp
Green Cut-off
Blue Cut-off
Sub Bright
Input an entire white signal.
Set to service adjustment mode.
Set the PICTURE and BRIGHT to minimum.
Adjust with SBRT if necessary.
Select G CUT and B CUT with{lana[4].
Adjust with|3]and|6|for the best white balance.
Set the PICTURE and BRIGHT to maximum.
Select GAMP and BAMP with[1]and[4]
Adjust with|3|and|6|for the best white balance.
Write into the memory by pressing|MUTING|
then
3. SUB BRIGHT ADJUSTMENT
1. Set to service mode.
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ray
2
2. Input a staircase signal of black and white from
the pattern generator.
3. BRIGHTNESS --- RESET
PICTURE --------- minimum
4. Select SBRT with [1] and [4] , and adjust SUB
BRIGHT level with [3] and |6| so that the stripe
second from the right is dimly lit.
white
second from the right
A
black
—38—"