JVC AV-56WP30, Service Manual

Page: 37 / 122

No. 52007
AV-56WP30
37
DEFLECTION CIRCUIT ADJUSTMENT
Item
Measuring
instrument
Test point Ad justment part Description
V. POSITION /
SIZ E /
LINEARITY
adjustment Signal
generator
Remote
control unit
D01 : V. SIZE
D05 : V. LINEARITY
D06 : V. CENTER
SERVICE SW
(S801)
[CONVERGENCE
PWB]
"
To memoriz e every time after finish adjustment on each
mode.
1. It pushes a power switch while pus hing SERVICE SW S801 on
the CONVERGENCE PWB then it makes picture without
convergence operation.
2. Press SERVICE SW S801 again.
3. Press the ASPECT key and s elect the FULL mode.
4. Receive a NTSC circle pattern signal.
5. Select 1.PICTURE/SOUND from the SERVICE MENU.
6. Select D01
＜
V. SIZE
＞
, D05
＜
V. LINEARITY
＞
, D06
＜
V.
CENTER
＞
with the FUNCTION (
▲
/
▼
) key.
7. Adjust D06, D02 to make A = B (precision ±2mm), and adjust
to make C = 75mm
8. Press the MUTING key and memorize the set value.
NOTE :
Do not adjust D04 ＜ V. S-CORRECTION ＞ , if it is different vertical
position after adjust vertic al linearity, to adjust vertic al position.
H. POSITION
adjustment D14 : H. CENTER
9. Select D14
＜
H. CENTER
＞
with FUNCTION (
▲
/
▼
) key.
10. Adjust D14 with FUNCTION ( / ) key and mak e D = E as
shown figure.
11. Press the MUTING key and memorize the s et value.
H. SIZ E
adjustment D03 : H. SIZ E 12. Receive a NTSC cross-hatch signal.
13. Select D03
＜
H. SIZE
＞
with the FUNCTION (
▲
/
▼
) key.
14. Adjust D03 and make sure that the vertical screen size of the
picture size is 92%.
15. Press the MUTING key and memorize the set value.
Picture size
100%
Screen size
(92%)
A
B
C
D E