JVC AV-65WP74/HA Service Manual page 49

3.8 ADJUSTMENT PROCEDURE
3.8.1 CHECK ITEMS
Measuring
Item
instrument
HIGH VOLTAGE Signal
generator
check
High voltage
meter
X-RAY Resistor
PROTECTOR [6.8k ohm
check 1/4W ±5%]
3.8.2 HORIZONTAL FREQUENCY ADJUSTMENT
Measuring
Item
instrument
H. FREQUENCY Signal
adjustment generator
Remote
control unit
Test point Adjustment part
CRT Anode
S1 connector
2 pin : X-Ray2
3 pin : X-Ray1
Test point Adjustment part
[1.PICTURE/SOUND]
D15 : H. FREQ.
D19 : DEF. RST
Description
(1) Receive NTSC whole black signal.
(2) Connect the high voltage meter between CRT anode
and GND.
(3) Check that the high voltage DC 31.0kV±1.0kV.
(1) Receive any broadcast.
(2) Connect resistor 6.8k ohm(1/4W, ±5%) between 2 pin
& 3 pin of the connector S1.
(3) Confirm that the X-RAY protector functions operated.
Description
(1) Receive any broadcast.
(2) Press [ASPECT] key and select FULL mode.
(3) Select 1. PICTURE/SOUND from SERVICE MENU.
(4) Select <D19> (DEF. RST) and change the data 0 to 1.
(5) While observing the screen, adjust the <D15> (H.
FREQ) so that an optimum horizontal synchronization
is obtained.
(6) After adjustment, select <D19> and change the data
1 to 0.
(7) Press [MUTING] key to memorize the set value.
AV-65WP74
(No.52096)1-49