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V-9221ME
PVM-9221ME |
ows
acts
3-3.
CONVERGENCE
Preparation:
-
@
Before starting. make
FOCUS,
H.SIZE. V.SIZE
and V.LIN adjustments.
e@
Turn BRT control fully counterclockwise.
@
Feed in the dot pattern.
(1)
Horizontal Static Convergence and Vertical Static
Convergence
If blue dot does not coincide with red and green
dots,
Move
BMC
magnet
to correct
insufficient
H.Static
convergence,
Rotate
BMC
magnet
to correct
insufficient
V.static
convergence.
In either case. repeat Beam Landing Adjustment.
(A)
(B)
Beam
Alignment
Magnet
H. STAT
C board
(2)
Dynamic Convergence Adjustment
Preparation:
1.
Loosen deflection yoke screw.
2.
Remove deflection yoke spacers.
shown below.
4." Tighten the deflection yoke screw.
5.
Install the deflection yoke spacers.
© HMC
© VMC
R
G
B
a
ab
G
Bb
b
B
a
b
Adjust HMC
Seam
) Mm
ADJ)
BLUE
=> Bae
Adjust VMC
fi
i
3-4.
WHITE BALANCE
(1)
1.
2:
(2)
SCREEN (G2)
In put a dots pattern.
Set the PICTURE
control at minimum
and turn
the BRIGHT control fully counterclock wise.
Confirm that BKG
voltage is less than 105V dc
when
turning RV259
(R.BKG).
RV261
(G.BKG)
and RV263 (B.BKG).
Note the color which becomes visible first when
turning SCREEN
VR.
WHITE
BALANCE
Input a cross-hatch pattern.
Set the PICTURE
control to minimum
and turn
the BRIGHT control click position.
Turn RV262 (B.DRIVE), RV260 (G.DRIVE)
and
RV258 (R.DRIVE)
fully clockwise.
Set RV259 (R.BKG). RV261 (G.BKG) and RV263
(B.BKG)
to minimum.
Turn RV518 (SUB BRT) slowly to obtain a
faintly visible cross-hatch.
Note the color that
first becomes visible by turning. Do not turn a
BKG control for this color.
Adjust the other two BKG controls for best white
balance (neutral gray) of the faint cross-hatch.
Set the PICTURE
control to maximum
and turn
the BRIGHT control fully clockwise. Observe the
screen
and adjust the DRIVE
controls
for best
white balance.
Repeat steps |. through 6. several times.
PVM-9221ME
MAX
MIN
80%
50%
(Adjusting VR position)
SCREEN
RV259
= R. BKG
RV261
G. BKG
RV263
8B. BKG
RV258
R. DRIVE
RV260
G. DRIVE
RV262
B. DRIVE
BA Board
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