Sony TRINITRON GDM-1601 Service Manual page 34

3) Again watch the right and left pincushion distortion.
When one side is over corrected or under corrected
after the other side has been made linear with
I PIN AMP
I
RV203, rotate I SIDE PIN]A!J
RV206 to adjust the pincushion distortion on both
sides equally, then again adjust to make linear with
IPIN AMP I RV203.
D¢D~
Fig.2-10-4 PIN BAL Movement
(2)
(1) When right and left pincushion distortion is
not equal.
(2) Adjust SIDE PIN SAL (RV206) equalize right
and left amounts of distortion.
(3) Adjust the PIN AMP (RV203) to be linear.
Fig. 2-10-5
2-11.
Vertical Linearity Adjustment
I) Rotate IV-LIN BALI RVI03 to equalize height of
tht:! framt:!s in the uppt:!r and lowt:!r sections and in
symmt:!trical positions.
2) Adjust to equalizt:! tht:! framt:! dimensions in the uppt:!r
and lower sections and in center of the picture with
ry-CiN]
RVI02.
3) Repeat Steps I) and 2) above if necessary.
RVTOB
IRVT02]
IRV1031
p-
RVTOT
RVT06
'.:
.I
o
'\-. ::VRVTOl
...;:; ::i--'
RVT04
., -= _ _
RVT05
~,
.'
: ':';""-RV203
RV204---"
o
/)",(.~
RV206
~RV20T
'''l
~ ':~
/ . i'RV201
o
R V20B R V205
L
V
~
~
L..
I\.
L:J
RV202
RV30T HVADJ
Fig. 2-11-1 Location of RV102, 103
4-8
•
Slighlly deteriorated linearity (V-LIN I
Make symmetrical and equal with V-LIN SAL
•
Use V-LIN to make full range uniform
Fig. 2-11-2
•
V-LIN movement
V-LIN SAL Adjustment
Fig. 2-11-3
Note: V-LIN SAL does not move when turning
V-LIN VR to a minimum. (the center shrinks
most)
2-12.
Total Geometric Distortion Check
I) Attach the linearity gauge. (EIA ball-chart) Input
the green cross-hatch signal.
2) Check all cross points on the picture whether those
are in the ± 1 % deviation circles.
3)
If there are any excess points out of circles, the moni-
tor should be adjusted again.