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1.4. X-Radiation
Warning:
The potential sources of X-Radiation in TV set are the EHT section and the picture tube. When
using a picture tube test jig for service, ensure that jig is capable of handling 29.0kV without
causing X-Radiation.
Note: It is important to use an accurate periodically calibrated high voltage meter.
1. Set the brightness to minimum.
2. Use the remocon to get into Service Mode.
3. Measure the EHT. The meter reading should indicate 27.5 (±1.5)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 the possibility X-Radiation, it is essential to use the
specified picture tube, if service replacement becomes necessary.
1.5. GP3 Chassis Block Diagram
2. Service Hints
2.1. Service Position for E-Board
1. Remove the back cover.
2. Stand the TV set as shown in Fig. 2.
3. Remove the A-Board from the TV set by pulling the main board
out as shown in Fig. 2.
Fig. 2
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