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KV-20EXR20
|
RM-Y103
(3) Screen-corner Convergence
a-d: screen-corner
misconvergence
:
3-3. FOCUS
1.
Tune in an off-air signal.
2. PICTURE —control to 80%.
3.
Adjust
the focus VR
on A board
so that the
focus at the center of the screen is optimum.
A magenta ring will appear if the focus is
adjusted only in the center of the screen.
Adjust evenly throughout the entire screen.
3-4. G2. WHITE
BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT(RV701)
1) Set the PICTURE and BRIGHTNESS
to normal.
2) Confirm G1 voltage is within 30.0+5V.
3) Apply DC voltage of 180V to the cathodes of R,
G and B from DC stabilized power source.
4) While watching the picture, adjust the G2 control
(RV701) to the just the retrace line disappears.
(Using the Remote Commander)
2. WHITE BALANCE ADJUSTMENT
1)
Set to service mode.
2)
Press [VIDEO | >
[RESET
to normal
and if
necessarys "TRINITRON"
Set to "Low" by [4or [=| .
3)
Input an entire white signal.
4)
Set the PICTURE to minimum.
5)
Select
S BRT with [1] and [4], and then set the
level to minimum with []and fl
Affix a Permalloy
ass'y corresponding
to the
misconverged areas.
Permalloy assembly
6) Select G CUT and B CUT with [1]and [4].
And adjust the level with [3] and [6] for the best
white balance.
7) Set the PICTURE to maximum.
8) Select
G AMP
and B AMP
with 1 and 4, and
adjust the level with [3] and [6] for the best white
balance.
. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Input a staircase signal of black and white from
the pattern generator.
3) BRIGHTNESS --- RESET
PICTURE
«::::::-
minimum
4) Select S BRT 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
black
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