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A6LXU
(2)
Except
for the above,
adjust
so that l/2 of the width
of the outer
circle
comes
to the BOTTOM
of the
screen.
*If using
the cross-hatch
signal,
adjust
so that the
top and bottom
of the screen
edge
is 7.25 cross-
hatch
away
from the exact
center
of the cross-
hatch
signal.
1.4.3
Side
Pin Distortion
Adjustment
(R7HF)
Adjustment
Preparation
(1)
Receive
cross-hatch
signal.
Set CONTRAST
control
to
maximum
and BRIGHTNESS
control
to the point where
the background
is set.
Adjustment
Procedure
(1)
Adjust
R7HF
so that the line of the right and left is
straight
(Specification:
Dt. D,<7mm
35V)
1.4.4
Horizontal
Size Adjustment
(R7H6)
Adjustment
Preparation
.
(1)
Receive
circle
pattern
signal
or cross-hatch
signal.
(Cross-hatch
signal:
20 vertical
lines,
14 horizontal
lines.)
(2)
Set CONTRAST
control
to maximum
and BRIGHTNESS
control
to center.
Adjustment
Procedure
(1)
Adjust
R7H6
so that the average
reading
of right and left
is 1.5. The reading
of each
side should
be at least
1.
Acceptable
Tolerance:
1.5-tO.5
(2)
If using
cross-hatch
signal,
adjust
R7H6
so that the far left
and right vertical
lines are at the screen
edge,
within
0.25
of a cross-hatch.
2.
SIGNAL
CIRCUIT
ADJUSTMENT
White
Balance
Adjustment
Adjustment
Preparation
(I)
Apply
heat-run
20 min. or more
after the power
is
turned
on.
(2)
Check
that the purity
adjustment
has been
completed.
(3)
Set the vertical
incident
illumination
on the CPT surface
to 20 Iux or less.
(4)
Receive
white
raster
signal
and set the color
tempera-
ture control
(white
control)
to STD.
(5)
Set drive
adjustment
VRs (R860,
R864)
to the mechani-
cal center.
(6)
Turn low brjghtness
white
balance
adjusting
VRs
(R866,
R868,
R870)
fully counterclockwise.
(7)
Turn the screen
adjusting
VR fully counterclockwise.
(8)
The picture
is switched
to a lateral
line by the switch
5851.
Adjustment
Procedure
(I)
Turn the screen
adjusting
VR clockwise
and set to the
position
where
the bright
colored
line starts
appearing
on the CPT screen.
Do not turn thereafter
the low brightness
white
balance
VR (this
is called
VR-A)
corresponding
to the color
first
appearing.
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
When
a bright
colored
line does
not appear,
set the
screen
VR fully clockwise.
Turn fully clockwise
the low brightness
white
balance
VRs except
VR-A
and adjust
so that red, green
and
blue bright
colored
lines appear
on the screen
equally.
Return
the switch
S851
back
to normal
position.
Set CONTRAST
and BRIGHTNESS
controls
to
minimum
and turn sub-black
level VR (R325)
to set at
the position
where
the white
raster
is just slightly
seen.
Set the white
balance
meter
at the center
of the screen
Adjust
CONTRAST
control
so that the indication
of the
brightness
meter
is 80% of the full scale.
Then,
turn the drive
adjusting
VRs (R860,
R864)
and
adjust
the high-brightness
white
balance.
Adjust
CONTRAST
control
to minimum
and check
that
the low-brightness
white
balance
is obtained
by
directly
observing
the CPT surface,
without
using
a
mirror.
When
the low brightness
white
balance
is not obtained,
adjust
other
low brightness
white
balance
VRs except
VR-A
and return
to item (6).
White
balance
color
temperature
setting:
7,200"
K.
Set white
control
(color
temperature
control)
to cool,
and check
that color
temperature
is approximately
9,300X
2.2
Sub Brightness
Adjustment
Adjustment
Preparation
(1)
Start adjustment
20 minutes
or more
after the power
is
turned
on. Receive
the color
bar signal.
(2)
Set the CONTRAST
and color
controls
to
minimum.
(3)
The vertical
incident
illumination
on the screen
should
be 20 Iux or less.
Adjustment
Specification:
within i0.3
step
Adjustment
Procedure
(1)
Press
the memory
initialize
key on the R/C. If you do
not have this key, short
the pins of the 2 pin connector
PI1 for one second,
then remove.
A beep
will be heard.
(2)
Press
the A button
to select
SUB-BRIGHTNESS
Mode.
(3)
Use the 4,
buttons
to increase
or decrease
so that
points
Aland
A2 sink to black
and A3 rises
slightly
above
it. (Visually
adjust)
(4)
After
above
adjustment,
SUB-BRIGHTNESS
will have
value
between
63 and 191. Adjustment
is now
complete.
(5)
After adjustment
is done,
press
the memory
initialize
key on the R/C one more
time and the data
is stored
in
memory.
If you do not have
this key, short
the pins of
the 2 pin connector
PI1 for one second,
then
remove.
Note:
When
selecting
SUB-BRIGHTNESS
mode
the peon
sets the CONTRAST
and COLOR
to min. automati-
cally
but make
sure that the other
conditions
are
center.
Directly
observe
the CPT screen
by eye
without
using
a mirror.
Should
sink to black.
Q 1 I
1
WiOO%
1
BLK
Should
rise slightly
from blact
Adjustment
specification:
within k0.3 step
16
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