JVC AV-27D502/R Service Manual page 165

HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
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.
2. CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT
(1) Turn the POWER SW ON.
(2) As shown in Fig. 1, set the resistor (between S1 connector 1 & 3 ).
(3) Make sure that the screen picture disappears.
(4) Temporarily unplug the power cord.
(5) Remove the resistor (between S1 connector 1 & 3 ).
(6) Again plug the power cord, make sure that the normal picture is displayed on the screen.
R952
R951
POWER
ON OFF
R532
R533
D535
RY951
Q951
Q532
BW
R534
Q531
D534
+
R538
C533
RESISTOR
24.7 kΩ ± 123.5 Ω
3 1
D531
R537
R535
Fig. 1
No. 51797C
HEATER
S1 CONNECTOR
FR525
4
D525
+
C525
AV-27D502
T502
29