JVC AV-48WP30 Service Manual page 51

AV-48WP30
HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
1. HIGH VOLTAGE HOLD DOWN CIRCUIT
After repairing the high voltage hold down circuit.
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 figure bellow, set the resistor (between S2 connector 1 & 5 ).
(3) Make sure that the screen picture disappears (no raster).
(4) Temporarily unplug the power cord.
(5) Remove the resistor (between S2 connector 1 & 5 ).
(6) Again plug the power cord, make sure that normal pictures is displayed on the screen.
CN003 2
X-RAY
R565
50
RESISTOR
6.8KΩ±0.5% 1/4W
1 2 3 4 5
TP-E
C562
R562
S1 CONNENTOR
1 2 3 4 5
X-RAY2
TP-E
( )
S1 SERVICE CONNENTOR
TP-91
R561 R811 D812
R563
C811
NC
X-RAY1
TP-91
140V
No. 51914
4 12
T502
FBT
5
B1
Y503
1
6
8 2
3
1
10
7
9