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3. Use an AC voltmeter, with 1 k
the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at
each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above
measurements.
6. The potential at any point should not exceed 0.25 V RMS.
A leakage current tester (Simpson Model 228 equivalent) may be
used to make the hot checks. Leakage current must not exceed 1/
2 mA. In case a measurement is outside of the limits specified,
there is a possibility of shock hazard, and the receiver should be
repaired and rechecked before it is returned to the customer.
1.4. UV-PRECAUTION
1. Be sure to disconnect the AC Plug when replacing the lamp.
2. Since the lamp reaches a very high temperature during its
operation, wait until it has completely cooled off when replacing
the Lamp Unit.
3. The lamp emits small amounts of UV-Radiation.
Avoid direct-eye contact by covering the Lamp and wearing the
UV protective glasses.
4. The high pressure lamp involves a risk of explosion.
/V or more sensitivity, to measure
Figure 1
Figure 2
4
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