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 33.0 kV (For model with 20 inch
CRT), 32.0 kV (For model with Round 27 inch CRT), 33.0 kV (For
model with Flat 27 inch CRT) 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 28.0
kV±1.5 kV (For model with 20 inch CRT), 30.0 kV±2.0 kV (For model
with Round 27 inch CRT), 31.0 kV±2.0 kV (For model with Flat 27
inch CRT).
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.
2.1. HORIZONTAL OSCILLATOR DISABLE CIRCUIT TEST
SERVICE WARNING :
The test must be made as a final check before set is returned to the customer.
CONFIRMATION OF X-RAY MOVEMENT
5
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