Convergence - Sony Trinitron KV-25XBR Service Manual

7. Slide deflection yoke back for a uniform red
screen.
8. Check green and blue rasters foT uniformity by
performing -the same way as steps 5, 6 and 7.
To get a uniform green screen,
connect lead (!) on the C board and
disconnect leads
4D
and
©
To get a uniform blue screen,
connect lead
©
on the C board and
disconnect leads
4D
and (!)
After these checks, connect the leads
4D ,
(!)
and
CD
9. Tighten the deflection yoke screw.
1 O. Check if mislanding appears at corners a-d as
shown in Fig. 4. If mislanding is observed,
correct it as shown in Fig. 4.
Purity control corrects
this area.
Disk magnets or
rotatable disk
magnets correct
these areas (a-d).
11. Confirm that beam landing is correct when
the receiver is faced in all directions.
15
KV-25XBR
RM-724/APM-X3U
3-2. CONVERGENCE
Preparation:
• Before starting; ,perform FOCUS, H .. SIZE and
V. SIZE adjustments.
• Set BRIGHT control .to fully counterclockw.ise.
• Feed in the dot patte.i:n.
(1) Hodzontal and Vertical Static Convergence
If blue dot does not coincide with red and green
dots, perform following steps.
Move BMC magnet (a) to correct insufficient
_ _ H. static convergence.
Rotage BMC magnet (b) to correct insufficient
.v
.static convergence.
In either case, repeat Beam Landing Adjust-
ment.
H. STAT
V. STAT
f©J\
~
(A)
(BJ
Beam Alignment Magnet
V. STAT
SUB BRT RV707
R-BKG
RV706
G-FJl<G RV704
~z~1.~~-c._i_l-_-_-
8-BKG RV702
G-DRIVE RV705
B-DRJVE RV703
,,.__.-,,:.:::..--- SCRN RV701
Fig.5
Fig. 6