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300Hz Separation
1.
Connect the LMS-238P Generator
to the Antenna input.
2.
Set the Generator
as follows:
Mode
Switch
set to L
Channel,
Internal
Frequency
set to 300Hz,
SAP On, Pilot
On, and Level Control pushed In.
3.
Connect an AC Millivolt Meter to Test Point 66.
4.
Adjust R107 for a null reading on the meter.
3kHz Separation
1. Connect the LMS-238P
Generator
to the Antenna input.
2.
Set the Generator
as follows:
Mode
Switch
set to L
Channel,
Internal Frequency
set to 3kHz, SAP On, Pilot On,
and Level Control pushed In.
3.
Connect an AC Millivolt Meter to Test Point 66.
4.
Adjust Rl16 for a null reading on the meter.
Focus Adjustments
(Electrical
and Optical)
Control Preset Positions
1.
Picture setting at mid-range.
2.
Sharpness
setting at mid-range.
3.
Brightness
setting at mid-range.
4.
Color setting at minimum.
5.
"lqnt setting at mid-range.
Electrical
Focus
1.
With the set tuned to a crosshatch
pattern,
this adjustment
can be made from the back of the set (with the light shield
removed).
The pattern will appear clearer if the front of the
screen is covered with a dark cloth.
2.
Observe
the magnified
reflections
of the individual
picture
tubes on the back side of the viewing screen.
3.
Adjust
the
respective
focus
controls
(top
row on the
Focus/G2
Distribution
Block) for the sharpest raster image.
Optical
Focus Adjustment
1.
This adjustment
can be made through
the back of the set
(with the light shield
removed)
while viewing
a crosshatch
pattern on the back of the screen.
The pattern will appear
clearer if the front of the screen is covered with a dark cloth.
2.
Cover 2 of the CRT Output Lenses with. 7 inch square pieces
of cardboard.
3.
Loosen the lens retaining wing nuts on the CRT Output Lens
and Housing Assembly.
18
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