Panasonic CT 30WX52, Service Manual

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replace all parts which have been overheated or damaged by the
short circuit.
3. After servicing, see to it that all the protective devices such as
insulation barriers, insulation papers, shields, and isolation R-C
combinations, are properly installed.
4. Before switching the power on, measure the resistance between B
+ line and cold side chassis ground. Connect the "-" side of an
ohmmeter to the B+ line, and the "+" side to chassis ground. Each
line must have moreresistance value than the specified one as
follows:
B+ line
SPECIFICATION
MAN 12V (TPA6) 12.0V±0.5V
MAIN 9V (TPA7) 9.0V±0.5V
MAIN 5V (TPA8) 5.0V±0.3V
GC 2.5V (TPA9) 2.5V±0.2V
STBY 3.3V (TPA16) 3.3V±0.2V
STBY 7V (TPA9) 7.0V±0.5V
+B2 (TPD144) 144.0V±1.5V
25V (TPD250) 27.5V±2.0V
15V (TPD150) 15.7V±1.5V
-15V (TPD151) -16.0V±1.5V
SOUND+ (TPD160) 16.5V±1.0V
SOUND- (TPD161) -16.5V±1.0V
220V (TPD7) 215V±5.0V
5. When the set is not used for a long period of time, unplug the AC
power cord plug from the AC line outlet.
6. High voltage points, as high as 37.2 ± 1.0 kV, are present when the
set is in operation. Operating the set without the rear cover
involves in a dangerous electrical shock from the set power
supply. Servicing must not be attempted by anyonewho is not
thoroughly familiar with the necessary precautions when working
on high voltage equipment. Always discharge the anode of the
picture tube to chassis ground before handling the picture tube.
7. After servicing, make the following leakage current checks to
prevent the customer from dangerous electrical shock.
1.2. Leakage Current Cold Check
1. Unplug the AC power cord and short between the two prongs of
3