JVC AV-48WP74/AHA Service Manual page 52

AV-48WP74
AV-56WP74
3.8.4.3 DEFLECTION ADJUSTMENT
Measuring
Item
instrument
V. POSITION / Signal
generator
SIZE /
LINEARITY
Remote
adjustment
control unit
C
H. POSITION Signal
generator
adjustment
Remote
control unit
H. SIZE Signal
generator
adjustment
Remote
control unit
1-50 (No.52105)
Test point Adjustment part
[1.PICTURE/SOUND]
D01 : V. SIZE
D05 : V. LINE
D06 : V. CENT
F62 : Without
convergence operation
A
B
[1.PICTURE/SOUND]
D14 : H. CENTER
F62 : Without
convergence operation
D E
[1.PICTURE/SOUND]
D03 : H. SIZE
F62 : Without
convergence operation
Screen size
(92%)
Picture size
100%
Description
• To memorize every time after finish adjustment on each
mode.
(1) Receive NTSC circle pattern signal.
(2) Select FULL mode with [ASPECT] key.
(3) Select 1. PICTURE/SOUND from SERVICE MENU.
(4) Select <F62> (Without convergence operation).
(5) Change the data 0 to 1, then it makes picture without
convergence operation.
(6) Select <D01> (V. SIZE), <D05> (V. LINE), <D06>
(V. CENT).
(7) Adjust <D01>, <D05> and <D06> to make A = B
(precision ±2mm), and adjust to make C = 55mm
(AV-48WP74) / 75mm (AV-56WP74)
(8) Press [MUTING] key and memorize the set value.
NOTE :
Do not adjust <D04> (V. S-CORRECTION), if it is
different vertical position after adjust vertical linearity,
to adjust vertical position.
(1) Receive NTSC circle pattern signal.
(2) Select FULL mode with [ASPECT] key.
(3) Select 1. PICTURE/SOUND from SERVICE MENU.
(4) Select <F62> (Without convergence operation).
(5) Change the data 0 to 1, then it makes picture without
convergence operation.
(6) Select <D14> (H. CENTER).
(7) Adjust <D14> to make D = E as shown figure.
(8) Press [MUTING] key and memorize the set value.
(1) Receive NTSC cross-hatch signal.
(2) Select FULL mode with [ASPECT] key.
(3) Select 1. PICTURE/SOUND from SERVICE MENU.
(4) Select <F62> (Without convergence operation).
(5) Change the data 0 to 1, then it makes picture without
convergence operation.
(6) Select <D03> (H. SIZE).
(7) Adjust <D03> to make sure that the vertical screen
size of the picture size is 92%.
(8) Press [MUTING] key and memorize the set value.