2.7 Raster position adjustment (3) Red and Blue centering with respect to green
Adjustment preparation is i2mm in both horizontal and vertical
(1) The same as item 2.6. (l)-(7) directions.
(2) The raster inclination adjustment should have been 2.8 Pincushion distortion and keystone distortion
completed,
correction
(3) Horizontal AFC adjustment should have been
Adjustment preparation
completed.
(4) Apply marking using the tape, etc. at the positions (1) The screen can face any direction, north, south,.
on the screen as shown in Fig. 2-7. east and west.
(2) Display the cross-hatch pattern signal.
(3) The focus adjustment of the G lens should have
been completed.
(4) The G raster (deflection yoke) inclination should
have been adjusted.
(5) The vertical amplitude and horizontal amplitude
should have been coarse adjusted.
(6) Set the GV-Center (RUN5) and GH-Center (RUNS)
adjustment VRs to their machanical centers.
L- wf2
Adjustment procedure
Fig. 2-7
(11 Project -only G on the screen using any one of
Adjustment procedure
following procedures.
(1) Apply covers to the R lens and B lens, and project a. Apply covers to the R and B lenses.
only green light on the screen.
b. Short-cicuit 2P sub mini connectors plug pins
(2) Use the green centering magnet and adjust so that
of the R and B CPT P.W.B.
the vertical and horizontal lines of the cross pattern
match the position where the markings have been (2) Adjust the horizontal line of the G according to the
applied. procedure shown in Table 2-1.
(3) Then remove the cover of R lens or 6 lens, and (3) Adjust the vertical line of the G according to the
project the red or blue light and green light on the procedure shown in Table 2-2.
screen,
Note: (1) The positions of the adjustment VRs are
(4) Turn the R or B centering magnet to match the
shown in Fig. 2-17-2. The movement of the
color with the green light.
bright lline corresponding to each VR is shown
Note: (1) Spec for green centering vertical direction
in Fig. 2-l 7-l.
&3mm horizontal direction &2.5mm.
(2) After this adjustment, check the raster
(2) Center of test pattern with respect to
position, vertical amplitude and horizontal
geometrical center of screen:
horzontal within 30mm, vertical within 20mm. amplitude of the G and adjust finally.
Table 2-l. The pincushion and keystone distortion correction of the horizontal green line (refer to Figs. 2-17-l and 2-17-2.)
No. Adjustment Item Adj. VR AdJustment Detalls
Upper/lower pincushion Correct the bow distortion of the lower horizontal line and make it a
1 RUFP
Lower distortion GV-PIN straight line.
- horizontal line
2 Upper/lower keystone RUG1 Remove the inclination of the lower horizontal line.
distortion GV-KEY
3 Upper pincushion RUE7 Correct the bow distortion of the upper horizontal line and make it a
- Upper distortion GV-U-PIN straight line.
horizontal line
Upper keystone
4 RUF6 Remove the inclination of the upper horizontat line.
distortion GV-U-KEY
Note 1. Adjustment procedure of the horizontal line (1) Lower line (RUF2/RUGl) and then (2) Upper line (RUE7/RUF6).
Note 2. Adjust repeatedly as occasion demands.
Table 2-2. The pincushion and keystone distortion correction of the vertical green line (refer to Figs. 2-17-1 and 2-17-2.)
No. Adjustment Item Adj. VR Adjustment Details
(I) Approximately correct the bow distortion at both the left and right sides using
GH-PIN (RUGS) and GH-L-PIN (RUGS).
LeNright pincushion (2) Turn RT26 to correct the bow distorion of the center vertical line and to
1 Center distortion phase RT26 make it a straight line.
vertical line
GV-PIN-PHASE
mulm
X 0 X
Left/right pincushion Correct the bow distortion of the right side vertical line and make it a
2 distortion GH-PIN RUG9 straight line.
Right
vertical line
Left/right keystone
3 distortion GH-KEY RUH8 Remove the indination of the vertical line on the right side.
Left pincushion Correct the bow distortion of the left side vertical line and make it a
4 distorion GH-L-PIN RUG5 straight line.
Left side
vertical line
Left keystone
5 distortion GH-L-KEY RUH4 Remove the indination of the vertical line on the left side.
Note 1. Adjustment procedure of the vertical line (1) Phase (RT26), (2) Lines on right (RUGS/RUH8), and then left side
(RUG5/RUH4).
Note 2. Adjust repeatedly as occasion demands.
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ACEC
