HPS-141
9
2.2
POWER SUPPLY
2.2.1
Consume
Consume
a)
Connect the TV under test through a electronic wattmeter at the 234Vac/60Hz line.
b)
Turn-on the TV set and apply a 60dB
µ
V ( the preferred channel must to be defined by the
production unit), modulated with a 88% video signal white pattern, and a
±
25 kHz
deviation FM carrier with a 1kHz sine wave audio signal.
c)
Adjust for max. the bright, contrast and volume controls, and read the Sink Power show at
the wattmeter.
d)
Active Standby mode and read again the Sink power.
e)
Repeat all below procedures, connecting now the television under test to a 117Vac/60 Hz
line.
Condition
Minimum
Nominal
Maximum
Unit
117V
AC
“PP”
-
42.0
52.0
W
117V
AC
Stand-By
-
8.5
10.0
W
234V
AC
“PP”
-
42.0
52.0
W
234V
AC
Stand-By
-
9.0
12.0
W
2.2.2 Main Power Supply
a)
Connect the TV set under test to 117Vac/60Hz line.
b)
Turn On the TV set and apply a 60dB
µ
V RF signal modulated by a white pattern video
signal and a 4.5 MHz +- 25 kHz deviation FM signal modulated by a 1kHz audio signal (the
preferred channel will be defined by the local unit).
c)
Adjust the TV to a “PP” condition.
d)
Utilizing a electronic DC voltmeter ( over 10 M input impedance), read the next point in the
power supply:
Condition
Test Point
Minimum
Nominal
Maximum
Unit
“PP” 117V
AC
+B 103V (Cathode of D807)
102.00
103.00
104.00
V
DC
“PP” 117V
AC
+B 16V (Cathode of D808)
14.00
15.50
16.50
V
DC
Summary of Contents for HPS-141
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