Commodore 1084S-P1 - Picture Settings; Colourpurity; Static Convergence

2. PICTURE SETTINGS
Remarks:
The following adjustments only apply to monitors
which are fitted with a replaceable deflection unit.
In
case
of
combi
tube
replacement,
no
picture
settings
is
required
because
it
has
been
done
by
factory
already
The
colour
purity
and
convergence
adjustments
,
described
hereafter
need
only
to
be
carried
out
if
a
completely
new
setting
is
required
or
if
a
new
picture
tube
has
been
fitted.
In
other
cases,
for
example
after
replacing
the
deflection
unit,
it
will
not
usually
be
necessary
to
remove
the
rubber
wedges
(G
in
figure
3).
Corrections
by
means
of
the
multi-pole
unit
will
then
suffice.
Focusing
adjustment
described
in
item
1.5
must
be
done
prior
to
picture
settings.
2.1 Colourpurity, see figure 3
Unscrew
the
fixing
screw
"F”
on
the
deflection
unit.
Move
the
deflection
unit
and
remove
the
three
rubber
wedges
"G".
Move
the
deflection
unit
forward
as
far
as
possible
against
the
glass
of
the
picture
tube
cone
and
tighten
fixing
screw
"F”
so
that
the
deflection
unit
can
only
be
shifted
slightly.
Place
the
multi-pole
unit
in
the
position
drawn:
tighten
screw
A”
and
turn
locking
ring
"B”
anticlockwise.
Position
the
monitor
to
face
east
or
west
and
switch
it
on.
Apply
a
cross—hatch
pattern
and
set
the
brightness
control
to
maximum.
Allow
the
monitor
to
warm
up
for
ten
minutes.
Adjust
the
static
convergence
using
tags
"C”
and
"D"
(if
necessary,
refer
to
point
2.2.).
Turn 3583 for the vertical centering to its
mid-position.
Switch
off
the
green
and
blue
gun
by
disconnecting
resistors
3122
and
3112.
1084S-P1 SERVICE MANUAL
By
turning
the
colour
purity
rings
with
the
"E”
tags,
the
vertical
red
bar
is
brought
as
close
as
possible
to
the
centre
of
the
screen,
whilst
the
central
horizontal
line
=,
should
be
as
straight
as
possible.
°
Apply
a
white
pattern
signal
and
check
that
the
red
bar
is
in
fact
in
the
centre
of
the
screen.
if
not,
switch
on the cross—hatch pattern again and move the red
bar in the right direction, ensuring that the picture
does
not
move
too
much
in
the
vertical
direction.
Apply
the
white
pattern
signal
and
move
the
deflection
unit
until
the
whole
picture
surface
is
uniformly
red.
Switch on the green and the blue gun. There may be
no
colour
patches
in
the
white
picture
now
obtained.
If
there
are,
a
minor
correction
can
be
made
by
turning
the
colour
purity
rings
"E”
slightly
and/or
moving
the
deflection
unit
slightly.
Tighten screw "F” securely.
Adjust the vertical centering with 3583.
Proceed to the static and then the dynamic
convergence setting.
2.2 Staticconvergence, see figure 3
Apply a cross—hatch pattern and allow the monitor to
warm up for ten minutes.
Switch off the green gun by disconnecting resistor
3122 and turn locking ring "B” anticlockwise.
By turning the four—pole rings with the "C” tags the
red
and
blue
cross—hatch
patterns
are
placed
on
top
of each other in the centre of the screen.
Switch
on
the
green
gun
by
connecting
resistor
3122
back
to
its
orginal
position
and
switch
off
the
blue
gun
by
disconnecting
3112.
By
turning
the
six—-pole
rings
with
the
"D”
tags
the
red
and
green
patterns
are
placed
on
top
of
each
other
in
the
centre
of
the
screen.
Switch
on
the
blue
gun
by
connecting
resistor
3112
back
to
its
orginal
position
and
tighten
ring
"B”.
Pp PURITY
soot POLE {E) -FAROREINHETT +
PUREZZA COLORE