Sony TRINITRON KV-21V5A - Page 33

(2) Dynamic Convergence Adjustment
P
.
oe
reparation:
Before starting to perform the Horizontal and Vertical
static convergence adjustment.
Slightly loosen the deflection yoke screw.
Remove the deflection yoke spacers.
Move the deflection yoke for best convergence as shown
below.
Tighten the deflection yoke screw.
Install the deflection yoke spacers.
REE
[ones agp aga
EEL
leseedl
(3) Screen-corner Convergence Adjustment
Affix a Permalloy ass'y
corresponding to the
misconverged areas
of
\
> Se
vA
a-d : screen-comer|
misconvergence
4-3. SCREEN (G2), WHITE BALANCE,
and SUB BRIGHT
(1) Screen (G2) Adjustment
1.
3.
Set the PICTURE and BRIGHT (FBT) to normal.
Put to VIDEO input mode without signals.
Connect R, G, and B of the C board cathode to the
ocsilloscope.
Adjust G2 (FBT) volume to the value below.
180V DC
ov
(2) White Balance Adjustment
1. Set to Service Mode.
2. Input white raster signal.
3. Set the PICTURE to minimum.
4. Select SBRT (14) with [1] and [4], and then set the level to
minimum with [3] and [6].
5. Select GCUT (17) and BCUT (18) with [1] and [4], and
adjust the level with [3] and [6] for the best white balance.
6. Set the PICTURE to maximum.
7. Select GDRV (15) and BDRV (16) with [1] and [4], and
8.
adjust the level with [3] and [6] for the best withe balance.
Write into the memory by pressing [MUTING] then fol.
(3) Sub Bright Adjustment
-34-
Set to service mode.
Input a staircase signal of black to white from the pattern
generator.
BRIGHT.. 50%.
PICTURE. minimum
Select SBRT (14) with [1] and [4], and adjust SBRT level
with [3] and [6] so that the second stripe from the right is
dimly lit.
White
second from the right
Black