CCE HPS-1407, Service Manual, Page: 12 / 52

HPS-2007
11
2.2.5 High Voltage (EHT)
a) Connect a DC voltmeter to the resistor wired to the Fly Back ABL pin ( the position and
value of this resist is defined by each model.
b) Connect a high voltage electronic DC voltmeter ( over 1G impedance) in the electronic tube
high voltage plug.
c) Adjust the bright, color and contrast controls to minimum and read the high voltage E.H.T.
(I
A
min).
d) Adjust the bright control to the maximum position, contrast control to the maximum position
and monitoring the voltage through the ABL resistor, adjust the bright control until the DC
voltage reached the specific value. The anode electric current will now be define by the
following equation:
I
A
=(V
ABL
/R
ABL
)
Read the high voltage E.H.T. in this conditions ( I
A
min.).
Condition Minimum Nominal Maximum Unit
I
A
min. 22.30 23.50 24.75 kV
DC
I
A
=1mA 20.60 21.70 22.85 kV
DC
2.2.6 Dielectric Rigid
Adjust the HI_POT equipment to 1500 Vac voltage, and the desired test current, in accordance
with the below specification table. When the TV set have a power switch, make sure that this
switch stay in the ON mode. Connect the ground terminal of the test equipment in both pins of the
line cord TV, and apply the HI-POT terminal ( 1.5KV) in every extern metal parts of the TV under
test for one minute. In this condition the electric current must be equal or inferior that shown in the
below specific table
Condition Minimum Nominal Maximum Unit
1500V
AC
- - 2,00 mA
AC