Sony TRINITRON GDM-1601 Service Manual page 29

2-4. Convergence Coarse Adjustment
If you use the CRT of FRU provided by SONY, you
need not do adjustments described in the item 2),5),
6).
I) Receive a white hatch signal.
2) Operate the BMC magnet and adjust the BMC in
horizontal and vertical directions of the picture.
3) Operate the H STAT VR and adjust the convergence
in the picture center.
4) Operate V CONY (RVI, 2, and 3) on the L board and
adjust the V convergence.
RV1-
RV2-
RV3_
Fig. 2-4-1
Cscrew
Bscrew
Fig. 2-4-2
5) Adjust XBV and XCV by the reactor on the right side
seen from the CRT.
6) Adjust H AMP and H TILT by the reactor on the left
side seen from the CRT.
4-3
XBV
HAMP
[23
R B R B
I i
I
I
....
" ,
......
I I
B
I I
XCV H TILT
X
R B B R
I
,
I
I
I
I
.....
I
I
I
I
Fig. 2-4-3
2-5. Beam Landing Adjustment
If you use the CRT of FRU provided by SONY, you
need not do adjustments described below.
I) Put the monitor in the Helmholtz room.
(BII
=
0, Bv
=
-0.35 gauss)
2) Input a full white signal (or equivalent signal), and
tum the Blue and Red channel off.
3) Set the CONT VR to maximum.
4) Degauss the screen by the hand degauss coil.
5) After more than 30 minutes aging, attach the landing
checker and adjust the DY position, the purity
control, the DY tilt and the landing of 4 comers.
The landing deviation have to be less than ± I OJ.(m
of 4 corners.
6) Attach magnets on the panel side if necessary as
shown in Fig. 2-5-1. (Do not exceed one magnet at
each corner.)
Magnets (for landing adjustments)
Fig. 2-5-1
7) Tighten the DY screw.