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Safety Precautions
Caution
No modification of any circuit should be attempted. Service should only be performed sets you are thoroughly
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familiar with all of the following safety checks and service guide lines.
Safety Check
Care should be taken while servicing this display unit because of the high voltage used in the deflection
circuits. These voltages are exposed in such areas as the associated flyback and yoke circuits.
Fire and Shock Hazard
1. When servicing, pay attention to the original lead routing, especially in the high voltage circuit. If a short circuit
is found, replace all parts which have been overheated or damaged by the short circuit.
2. All protective devices must be reinstalled per original design.
3. Soldering must be inspected for possible cold solder joints, frayed leads, damaged insulation, solder splashes
or sharp solder points.
Be certain to remove all foreign material.
X-Radiation
Warning: The only potential source of X-Radiation is the picture tube.
However when the high voltage circuitry is operating properly there is no possibility of an X-Radiation
problem. The basic precaution which must be exercised is to keep the high voltage at the following fac-
tory-recommended level.
Note: It is important to use an accurate periodically calibrated high voltage meter.
2. Turn the brightness control fully to the left (minimum brightness).
3. Measure the high voltage. The high voltage meter reading should indicate 12.7KV += O.5KV.
Important Safety Notice
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