
Alignment and Adjustments
Samsung Electronics
5-1
5. Alignment and Adjustments
5-1 General Alignment Instructions
1. Usually, a color TV-VCR needs only slight
touch-up adjustment upon installation. Check
the basic characteristics such as height, hori-
zontal and vertical sync and focus.
2. Observe the picture for good black and white
details. There should be no objectionable
color shading; if color shading is present,
demagnetize, perform purity and convergence
adjustments described below.
3. Use the specified test equipment or its equiva-
lent.
4. Correct impedance matching is essential.
5. Avoid overload. Excessive signal from a sweep
generator might overload the front-end of the
TV. When inserting signal markers, do not
allow the marker generator to distort test
results.
6. Connect the TV only to an AC power source
with voltage and frequency as specified on the
backcover nameplate.
7. Do not attempt to connect or disconnect any
wires while the TV is turned on. Make sure
that the power cord is disconnected before
replacing any parts.
8. To protect against shock hazard, use an isola-
tion transformer.
5-2 Automatic Degaussing
A degaussing coil is mounted around the picture
tube, so that external degaussing after moving
the TV should be unnecessary. But the receiv-
er must be properly degaussed upon installa-
tion.
The degaussing coil operates for about 1 sec-
ond after the power is switched ON. If the set
is moved or turned in a different direction,
the power should be OFF for at least 10 min-
utes.
If the chassis or parts of the cabinet become
magnetized, poor color purity will result. If
this happens, use an external degaussing coil.
Slowly move the degaussing coil around the
faceplate of the picture tube and the sides and
front of the receiver. Slowly withdraw the coil
to a distance of about 6 feet before turning
power OFF.
If color shading persists, perform the follow-
ing Color Purity and Convergence adjust-
ments.
5-3 High Voltage Check
CAUTION: There is no high voltage adjust-
ment on this chassis. The B+ power supply
should be +130 volts (with full color- bar
input and normal picture level).
1. Connect a digital voltmeter to the second
anode of the picture tube.
2. Turn on the TV. Set the Brightness and
Contrast controls to minimum (zero beam cur-
rent).
3. Adjust the Brightness and contrast controls to
both extremes. Ensure that the high voltage
does not exceed 32 KV under any conditions.
Содержание CS3403AMNS/XSH
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