Sony TRINITRON KV-AR25M90B Service Manual page 12

6. Y separation axis correction magnet adjustment.
1. Receive the cross-hatch signal and adjust
[PICTURE] to [MIN] and [BRIGHTNESS] to
[STANDARD] .
2. Adjust the Y separation axis correction magnet
on the neck assembly so that the horizontal lines
at the top and bottom of the screen are straight.
Blue
Neck assy
Red
VM1 board
(2) Dynamic Convergence Adjustment
Preparation:
Before starting this adjustment, adjust the horizontal and
the vertical static convergence.
R B
TLH
R B
YCH
ON DY:
TLV-1
YCH
XCV
DY pocket
TLV
XCV Rotate XCV
YCH Rotate YCH VOL on DY
TLH
(3) Screen-corner Convergence
Red If you are unable to adjust the corner convergence
Neck assy
properly, this can be corrected with the use Piece A(90)
Conv. Correct.
Blue
VM1 board
1. Affix the Piece A(90) Conv. Correct corresponding to
B
R
TLV
R
B
XCV
DY pocket
TLH Plate
XCV
– 11 –
Rotate TLV-2 VOL (29", 34") on DY
Adj core on DY
Insert TLH Correction Plate to DY Pocket
(Left or Right)
b
a-d : screen-corner
misconvergence
c
the misconverged areas.
Fix a Perrmalloy assy
corresponding to the
misconverged areas
a
d
a to d : permalloy assembly
KV-AR25M90B
RM-W104
a
d
b
c