DP55
2.7 Beam form adjustment
Adjustment preparation(3) After adjustment press the "SERVICE ONLY" SW
(1) Raster Position should have been completed.to exit from the Digital Convergence crosshatch.
(2) The raster tilt and centering should have been
H. Size
completed.
Specification
(3) Set video conditions to factory preset.
51�1070
(4) Input the dot signal.
(5) Set Aspect to 4:3 Standard Mode.57� 1195
Adjustment procedure65� 1365
(1) Green PRT beam shape adjustment. Short- Tolerance:+/-5mm unit : mm
circuit TS (2p EH) sub-mini connectors on Red
and Blue CPT P.W.B.s to project only the GreenGreen DCU crosshatch (with conv. Data is clear)
beam.
(2) Turn the green static focus VR, on the Focus
Pack, fully clockwise. (Blooming)
Right end of Green color Left end of Green color
vertical line.
(3) Make the dot at the screen center a true circlevertical line.
using the 4-pole magnet as shown below.
(4) Also adjust the Red and Blue PRT beam shapes
according to the steps (1) to (3).
(5) After the adjustment has been completed, return L=
R, G and B static VRs to the just focus point.
Between the v ertical lines at the left and right end.
(6) After the BEAM FORM is completed, fix the
BEAM FORM magnet with white paint.
2.9 VERTICAL SIZE ADJUSTMENT
PRT SURFACE SIDEAdjustment preparation
(1) Receive any NTSC signal.
(2) VIDEO control should be set Factory Preset
4-POLE BEAMcondition.
SHAPE CORRECTION
(3) Horizontal Size adjustment should be finished.
MAGNET
(4) The Convergence should not be corrected.
ZERO FIELD2-POLE BEAM
SPACER (NOALIGNMENT
ADJUSTMENT)MAGNETAdjustment procedure
TRUE CIRCLE SPECIFICATION(1) Press Service Only button on the SIGNAL PWB
then press the [MUTE] key on R/C at the same
time. Uncorrected crosshatch is displayed.
(2) Adjust V size as follows , using R607 (Vertical
b
Size VR).
(3) After adjustment press the "SERVICE ONLY" SW
to exit from the Digital Convergence crosshatch.
TRUE CIRCLE DEGREE: a/b
aSPECIFICATION: 1.0-1.1
V. Size
Specification
2.8 HORIZONTAL SIZE ADJUSTMENT 51�560
ADJUSTMENT
57� 625
Adjustment preparation
65� 710
(1) Receive any NTSC signal.
Tolerance:+/-5mm
(2) VIDEO control should be set Factory Preset unit : mm
Top end of Green color horizontal line.
condition.
Green DCU crosshatch
(3) BEAM FORM adjustment should be finished.
(With Conv. data cleared.)
(4) The Convergence should not be corrected.
Adjustment procedurebetween the horizontal
line at the top and
L=bottom
(1) Press Service Only button on the SIGNAL PWB
then press the [MUTE] key on R/C at the same
time. Uncorrected crosshatch is displayed. Center line
) Adjust H size as follows , using R711 (Horizon-(2
tal Size VR). Bottom end of Green color horizontal line.
31
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