CCE HPS-2185FS, Руководство по обслуживанию

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HPS-2185FS
3.2.3 Main Power Supply Regulation with fluctuation of the line
Repeat the procedure of the item 2.2 when the television is connected to
the electric net with 100VAC/60Hz and also 240VAC/60Hz.
Condition Test Point Minimum Nominal Maximum Unit
100Vac +B 118V 117 118 119 V
240Vac +B 17V 16,5 17,5 18,5 V
3.2.4 Auxiliary power supply from Fly Back Transformer
a) Connect the TV under test to a 117 Vac/60 Hz li ne.
b) Turn On the TV set and apply a 60dB
µ
V (the preferred channel will be
defined by the local unit), modulated with a 88%video signal white pattern,
and a
±
25kHz deviation FM carrier with a 400Hz sine wave audio signal.
c) Ajustar a TV na condição ”PP”.
d) Através de um voltímetro eletrônico DC, com impedância de entrada
superior a 10M
Ω
, medir as tensões de alimentação auxiliares do FLY
BACK.
e) Medir a tensão em “RMS” nos pinos de filamento do cinescópio através de
um “voltímetro TRUE RMS”.
f) When exist, read the auxiliary wind Peak to peak voltage, utilizing an
oscilloscope.
Condition Test Point Minimum Nominal Maximum Unit
“PP” 117Vac
E+12V (Cathode of D402) +12,00 +13,00 +14,00 Vdc
“PP” 117Vac
E-12V (Anode of D403) -11,00 -12,00 -13,00 Vdc
“PP” 117Vac
E180V (Anode of D404) 170,00 180,00 195,00 Vdc
“PP” 117Vac
FIL (RMS) (Pins 9 and 10
of V901)
5,70 6,30 6,90 Vrms
3.2.5 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) Repeat the procedures a and b .
d) Adjust the bright, color and contrast controls to minimum and read the high
voltage E.H.T. (I
A
min).
e) 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).