Sony TRINITRON KV-27TW77 Service Manual page 44

KV-27TW77/27TW78
KV-32TW7 W32TW78
SUB CONTRAST ADJUSTMENT (SPIX)
1. Input a color-bar signal.
2. Set to Service adjustment Mode.
3. Set the conditions as follows.
PICTURE ------- MAX
COLOR sane esees MIN
BRIGHT 0 ----- CENTER
ROFF ove ON (1)
GOFF ee OFF (0)
B OFF steer ones OFF (0)
SERVICE ROFF 1 |———— 1:ON
dau 0: OFF
4. Connect an oscilloscope to CN703 Pin@ (R
OUT) of C board and ground.
5. Select SPIX with[1]and|4].
6. Adjust with|3|and|6|for the 1.940.1Vp-p.
White }
1.90.1 Vp-p
7. Write the memory by pressing|MUTING|then
ENTER .
8. Return the following back to normal after
adjustment.
PICTURE -7**"7-*° MAX
BRIGHT o-77"7""- CENTER
COLOR we eeeeeee CENTER
R OFF rreerer ON
G OFF seaeeeeee ON
B OFF de eeeeeee ON
SUB HUE, SUB COLOR ADJUSTMENT (SHUE, SCOL
1. Input a color-bar signal.
2. Set to service adjustment mode.
3. Connect an oscilloscope to CN703 Pin@) (B OUT) of
C board.
4. Select SHUE and SCOL with(1Jand|4].
5. Adjust with|3|and|6|for the Vi=V4 (SCOR) and V2
=V3 (SHUE).
Vi ve vs V4
6. Increase the data of [SCOL) by 5 steps.
7. Write into the memory by pressing |MUTING
then|ENTER| .
SUB BARANCE ADJUSTMENT (SBAL)
1. Input a stereo signal.
2. Set to service adjustment mode.
3. Select SBAL with[l]and [4].
4, Adjust with|and|6|for the best sound balance
.5. Write into the memory by pressing MU'TING| then
ENTER .
[DISPLAY POSITION ADJUSTMENT (DISP)
1. Input a color-bar signal.
2. Set to service adjustment Mode.
3. Select DISP with[1]and [4].
4, Adjust with [Blana|[6|for the bar center.
5. Write the memory by pressing [MUTING]then
[ENTER] .
SERVICE AFC
1000
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