2. Connect a 1.5 k , 10 W resistor, in parallel with a 0.15 F capacitor,
between each exposed metallic part on the set and a good earth
ground , as shown in Figure 1.
3. Use an AC voltmeter, with 1 k /V or more sensitivity, to measure 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 0.75 V RMS.
A leakage current tester (Simpson Model 229 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.
Figure 1
2. X-RADIATION
WARNING:
1. The potential source of X-Radiation in TV sets is the High Voltage
section and the picture tube.
2. When using a picture tube test fixture for service, ensure that the
fixture is capable of handling 32.0 kV without causing X-Radiation.
NOTE :
It is important to use an accurate periodically calibrated high voltage
meter.
1. Reduce the brightness to minimum.
2. Set the SERVICE switch to SERVICE .
4
Содержание ShowStopper PV-SS2710
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Страница 20: ...CAUTION Disconnect AC plug before disassembly Fig D1 6 1 2 Disassembly Method 20 www manualscenter com ...
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Страница 23: ...6 1 2 1 Notes in chart 1 Removal of TV Video Power HDR Unit Fig D4 23 www manualscenter com ...
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