JVC AV-27F713 Service Manual page 31

HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
1. HIGH VOLTAGE HOLD DOWN CIRCUIT
After repairing the high voltage hold down c ircuit 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 switch to on.
(2) As shown in Fig. 1, set the resistor between
(3) Make sure that the screen pic ture disappears.
(4) Temporarily unplug the power plug.
(5) Remove the resistor replac ed
(6) Again plug the power plug, make sure that the normal picture is displayed on the screen.
R950
PO WER
ON OFF
D535
S1 c onnector
S1 connec tor 2 and
Q951
5
Q532
Q531
D534
D531
R935
C533
2 and 3 .
3 .
RESISTOR
22.0 k Ω± Ω± 110 Ω Ω Ω Ω Ω± Ω±
S1 CONNECTOR
4 3 2 1
R537
R535
C525
Fig. 1
No.52005
HEATER
T502
HVT
4
FR529 D525
AV-27F703
AV-27F713
AV-27F803
31