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Electrical
Adjustment
Circuit Board
Adjustments
A.
Current Drain Check
{1)
Apply AC
12V to Circuit
Board-and
check
the reading of current
drain
with Ammeter
(Fig. 10}.
Rated
value:
450mA
+50mA
(Ammeter)
Unsolder
the lead
(Fig. 10)
B.
Overall
Adjustment
(1)
Confirm
that Picture Tube Socket
is disconnected
from Picture Tube.
(2)
Apply AC 12V for power
supply to Circuit Board
through 9P Connector.
(3)
Connect VOM
to the designated
parts.
@® and
@® on
Circuit
Board
to
read
DC
Stabilizing
Output
Voltage
as
shown
in Fig. 11 andsadjust
Adjustable
Resistor (Ri, 1K ohm) so that the voltage of 10V
is obtained.
VOM
range:
10~15V
range
(Voltmeter )
Measure
with
Voltmeter(20Kohms /V )
(4)
Vertical Deflection
Adjustment
a.
Apply vertical deflection
signal through
9P connector.
b.
Saw-tooth
waveform should
be obtained
between
ground
and
part
@in Fig.12
with
oscilloscope,
(voltage
waveform)
Oscilloscope
(Fig. 12)
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