Panasonic CT36HL43G - 36" COLOR TV, Service Manual

Page: 3 / 174

rechecked before it is returned to the customer.
Hot check circuit
Insulation test
Connect an insulation tester between an exposed metallic part and A.C. line. Apply 1500VAC/
60Hz for 1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with
other metallic exposed parts.
X ray radiation
WARNING
The potential source of x ray radiation in the TV set is in the high voltage section and the picture
tube.
NOTE
It is important to use an accurate, calibrated high voltage meter.
Set the brightness, picture, sharpness and color controls to minimum.
Measure the high voltage. With a 480i signal the high voltage should be 33.0 ± 1.0kV and with a
1080i signal the high voltage should be 33.0 (+ 1.0kV, - 2.0kV). If the upper limit is out of
tolerance, immediate service and correctionis required to insure safe operation and to prevent
the possibility of premature component failure.
Horizontal oscillator disable circuit test
This test must be performed as a final check before the receiver is returned to the customer. See
horizontal oscillator disable circuit procedure check in this manual.
2. Service notes
NOTE
These components are affixed with glue. Be careful not to break or damage any foil under the
component or at the pins of the ICs when removing. Usually applying heat to the component for a
short time while twisting with tweezers will break the component loose.
3