Tandy CM-4 User Manual

11.
Dynamic
Convergence
(Figs.
17
—
19)
Dynamic
convergence
(convergence
of
the
three color
fields at the edges
of the CRT screen)
is accomplished
by proper
insertion
and positioning
of three
rubber
wedges
between
the edge
of
the deflection
yoke
and
the funnel
of
the CRT.
This
is accomplished
in the following
manner:
1
.
Switch the display
monitor
ON
and allow
it
to
warm
up
for 15 minutes.
2.
Apply the Crosshatch pattern (Fig.
14) from the
computer
to
the
display
monitor.
Observe
spacing
between
lines
around the
edges
of the CRT.
3.
Tilt the
deflection
yoke up
and down.
Insert
tilt
ad-
justment wedges
(T) and
(5)
between
the deflec-
tion
yoke and the CRT
until
the
misconvergence
illustrated
in Figure 17
has
been
corrected.
4.
Tilt the deflection
yoke right and
left.
Insert tilt
ad-
justment
wedge
(3)
between the
deflection
yoke
and
the
CRT
until
the
misconvergence
illustrated
in
Figure 18
has
been corrected.
5.
Alternately
change the
spacing
between,
and depth
of
insertion
of, the
three
wedges until
proper
dy-
namic
convergence
is obtained.
6.
Check purity
and
readjust,
if
necessary.
r
GREEN
^r
BLUE-
(RED)
7T"
l^
RED
I—
(BLUE)
/
BLUE(RED).
77
/
GREEN
RED
(BLUE)
Figure
17
/
/(RED)
GRE
RED
L_"
tu
|^_(BLUE)|
GREEN
BLUE
RED)
Figure
18
WEDGE
(2)
DEFLECTION
YOKE
REAR
VIEW
WEDGE(3)
Figure
19. Dynamic Convergence
17

Tandy CM-4 Specifications

General

Brand	Tandy
Model	CM-4
Category	Monitor
Language	English