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 .
3. Measure the High Voltage. The meter reading should indicate 30.0
kV±2.5 kV.
If the meter indication is out of tolerance, immediate service and
correction is required to prevent the possibility of premature
component failure.
4. To prevent an X-Radiation possibly, it is essential to use the
specified picture tube.
4
Summary of Contents for OmniVision PV-C2780-K
Page 8: ...Fig 1 3 Fig 1 4 8 ...
Page 26: ...Fig D5 6 1 2 1 Notes in chart 26 ...
Page 29: ...6 2 2 Inner Parts Location Fig J1 1 29 ...
Page 30: ...6 2 3 EJECT Position Confirmation Fig J1 2 30 ...
Page 31: ...6 2 4 Grounding Plate Unit Full Erase Head and Cylinder Unit Fig J2 1 31 ...
Page 44: ...6 3 CASSETTE UP ASS Y SECTION 6 3 1 Top Plate Wiper Arm Unit and Holder Unit Fig K1 1 44 ...
Page 81: ...81 ...
Page 85: ...11 2 MECHANISM BOTTOM SECTION 85 ...
Page 86: ...11 3 CASSETTE UP COMPARTMENT SECTION 86 ...
Page 87: ...11 4 CHASSIS FRAME SECTION 1 87 ...
Page 88: ...11 5 CHASSIS FRAME SECTION 2 88 ...
Page 89: ...11 6 PACKING PARTS AND ACCESSORIES SECTION 89 ...
