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3.7.8 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
3.7.8.1
HIGH VOLTAGE HOLD DOWN CIRCUIT
After repairing the high voltage hold down circuit shown in Fig.1.
This circuit shall be checked to operate correctly.
3.7.8.2
CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT
(1) Turn the power switch to on.
(2) As shown in Fig. 1, set the resistor between [X] connector [1] and [3].
(3) Make sure that the screen picture disappears.
(4) Temporarily unplug the power plug.
(5) Remove the resistor replaced [X] connector [1] and [3].
(6) Again plug the power plug, make sure that the normal picture is displayed on the screen.
D958 R953
POWER
ON OFF
D563
RY901
Q951
Q562
Q561
D562
R564
C562
RESISTOR
16.7k 1% 1/4W
CONNECTOR
3
2
1
X
R562
D561
R561
R563
C561
Fig.1
HEATER
T522
4
D565
BW
(No.52111)1-29
AV-20420
AV-20421
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