Set-Up Adjustments - Sony TRINITRON PVM-9221ME Service Manual

SECTION 3
| PVM-9221ME PVM-9221ME |
SET-UP ADJUSTMENTS
The following adjustments should be made when
a complete realignment is required or a new
picture tube is installed.
Controls and switch should be set as follows unless
otherwise noted:
BRT. CONTR controls...... fully clockwise
Make the following adjustments in the order as follows
given:
3-1.
3-2.
3-3.
3-4,
Beam Landing
Focus Adjustment
Convergence
White Balance
Note: Test Equipment Required
1. Color-bar/pattern generator
2. Degausser
3-1. BEAM LANDING
Preparation:
e Before starting, degauss the entire screen.
1. Loosen deflection yoke screw.
2. Remove deflection yoke spacers.
3. Adjust purity control to center the slide between
10.
11.
12.
two projections as shown in Fig. 1-1.
Slide deflection yoke as far forward as it will go.
Turn RED CUT OFF VR (RV259) MAX and
GREEN (RV261) and BLUE CUT OFF RV
(RV263) MIN.
Turn purity control to center vertical red band as
shown in Fig, 1-2.
Slide deflection yoke back for a uniform red screen.
Check green and blue rasters for uniformity.
Repeat the steps 6, 7 and 8. --
Turn all CUT OFF VR (RV259, 261, 263) for
mechanical CENTER.
Install the deflection yoke spacers.
Tighten the deflection yoke screw.
Check if mislanding appears at corners a-d as-
shown in Fig, 1-3. If mislanding is observed,
correct it as shown in Fig. 1-4.
3-2. FOCUS ADJUSTMENT
(1)
(2)
Input monoscope signal.
PICTURE control..... 80%
BRICHT control..... 50%
Adjust FOCUS control for a best picture at the
center and both sides of the screen.
FOCUS
iS
P ts
t
urity control correc
'his area.
S|
Disk magnet corrects
these arreas.
Nx
3-3. CONVERGENCE
Preparation: re
Before starting, make FOCUS, H.SIZE. V.SIZE
and V.LIN adjustments.
e@ Turn BRT control fully counterclockwise.
e@ 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.
convergence.
(2)
In either case. repeat Beam Landing Adjustment,
(A)
(B)
Beam Alignment Magnet
Dynamic Convergence Adjustment
Preparation:
Loosen deflection yoke screw.
Remove deflection yoke spacers.
' Tighten the deflection yoke screw.
Install the deflection yoke spacers.
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