JVC AV-27FA44/BSA - 4.8 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT; 4.8.1 HIGH VOLTAGE HOLD DOWN CIRCUIT; 4.8.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT

(No.52114)1-37
4.8 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
4.8.1 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.
4.8.2 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 [S1] connector [2] and [3] .
(3) Make sure that the screen picture disappears.
(4) Temporarily unplug the power plug.
(5) Remove the resistor replaced [S1] connector [2] and [3] .
(6) Again plug the power plug, make sure that the normal picture is displayed on the screen.
4
T502
CONNECTOR
RESISTOR
HEATER
AV-27FA44ASA
AV-27FA44AZA
AV-32FA44AYA
AV-32FA44AZA
AV-36FA44AYA
Model Resistor
20.0k 110
16.9k 85
19.3k 96.5
23.3k 116
19.3k 96.5
R537
FR525
S1
C525
R535
D531
3 2 1
Q531
D535
Q532
Q951
B1
(134.5V)
R952
POWER
ON OFF
C533
R538
R534
R533
R532
D525
D534
HVT
45