JVC AV-48WP74 Service Manual page 4

AV-48WP74
AV-56WP74
6) 3.8.4.2 PREPARATION (Page 1-49)
RASTER Signal
generator
CENTERNG &
H. POSITION /
Remote
SIZE (coarse)
Control unit
adjustment
L1
L1=30mm
4 (No. 52105C)
[1.PICTURE/SOUND]
D03 : H. SIZE
D14 : H. CENTER
F62 : W ithout
convergence 0peration
G CENTERING
magnet
G CENTERING
magnet
G CENTERING
magnet
[DEF. YOKE]
R G B
L2
L2=45mm
(1) Receive NTSC cross-hatch signal.
(2) Select 1. PICTURE/SOUND from SERVICE MENU.
(3) Select <F62> (Without convergence operation) with [CH
+] / [CH -] keys.
(4) Change the data 0 to 1, then it makes picture without
convergence operation.
(5) Makes a green single color.
NOTE :
When making a single color, It squeezes SCREEN VR
in each one, or it does a lid to the lens in the adjustment
color and it makes it single color.
Select <D03> (H. SIZE) and shorten the level until
(6)
and perpendicular amplitude of vibration with until
the blanking in Left and Right and on either side
can be seen
Select <D14> (H. CENTER) and adjust horizontal
(7)
position to make the screen center and signal
center.
Select <D03> and adjust horizontal size to make
(8)
screen picture approx. 92% of H-SIZE.
After adjustment, select <F62> and change the
(9)
data 1 to 0.
Press [MUTING] key and memorize the set value.
(10)
Adjust G CENTERING magnet to make horizontal
(11)
and vertical line center as mechanical center of
screen.
Red and blue color too, are reflected by it.
(12)
(13) Using R CENTERING magnet and B CENTERING
magnet, adjusts for the line of the red(L1) and the
blue(L2) to become the position of the left figure
NOTE :
Vertical center position of the red and blue are the
same as green.
Adjustment according to an internal signal
using TEST MODE is also possible.
(TEST MODE : Refer to top page)
ADDITION