JVC AV-48WP74/AHA Service Manual page 65

3.9 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
3.9.1 HIGH VOLTAGE HOLD DOWN CIRCUIT
After repairing the high voltage hold down circuit.
This circuit shall be checked to operate correctly.
3.9.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT
(1) Turn the power switch ON.
(2) As shown in figure bellow, set the resistor (between S1 connector 2 & 3).
(3) Make sure that the screen picture disappears (no raster).
(4) Temporarily unplug the power cord.
(5) Remove the resistor (between S1 connector 2 & 3).
(6) Again plug the power cord, make sure that normal pictures is displayed on the screen.
CN003
2
X-RAY
R565
RESISTOR
6.8K
1 2 3 4 5
TP-E
R561
D561
C562
D562
R562
S1 CONNENTOR
1 2 3 4 5
X-RAY2
TP-E X-RAY1
( )
0.5% 1/4W
S1 SERVICE CONNENTOR
TP-91
FR811 D812
C811
NC
TP-91
140V
4 12
T502
FBT
5
B1
6 1
8 2
3
1
10
7
9
(No.52105)1-63
AV-48WP74
AV-56WP74