JVC AV-27F704/BSA Service Manual page 54

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.
R952
POWER
ON OFF
R532
R533
D535
Q951
B1
(134.5V)
5
Q532
R534
Q531
D534
D531
R538
C533
RESISTOR
S1 CONNECTOR
4 3 2 1
R537
R535
C525
Model Resistor
AV-27F704ASA 20.0k
16.9k
AV-27F704AZA
19.3k
AV-32F704AYA
23.3k
AV-32F704AZA
AV-36F704AYA 19.3k
HEATER
T502
HVT
4
FR525
D525
110
85
96.5
116
96.5
(No.52113)1-37