JVC AV21BT7EEB, Руководство по обслуживанию

Страница: 15 / 16

No. 51878
AV21BT7ENS / AV21BT7ENB
AV21BT7EPS / AV21BT7EPB
AV21BT7EES / AV21BT7EEB
15
Item
Measuring
instrument
Test point Adjustment part Description
S-CORRECTION
Adjustment Signal
generator Adjust 15 ( 4 : 3 )
Adjust 26 ( 16 : 9 )
7. Receive a
PAL
circle pattern signal.
8. Set
< 4 : 3 aspect mode >
.
9. Select < ADJUST 15 > from SERVICE MENU.
10. Change S-correction till the middle part of the circle is round
as possible.
11. Set < 16 : 9 aspect mode > .
12. Adjusts with the step which is the same above from 3 to 4
about the 16 : 9 aspect mode, too.
VERTICAL
SHIFT
Adjustment
Signal
generator Adjust 16 ( 4 : 3 )
Adjust 27 ( 16 : 9 )
1. Receive a PAL test pattern signal ( or the symmetrical signal
in the top and the bottom and on either side to find ).
2. Set
< 4 : 3 aspect mode >
.
3. Select < ADJUST 15 > from SERVICE MENU.
4. Change Vertical Shift till the test pattern is vertically centred,
i.e. horizontal line at the centre pattern is in equal distance
both to upper and lower side of the picture tube. Check and
readjust Vertical Shift item if the adjustment becomes
improper after some other geometric adjustments are done.
5. Set
< 16 : 9 aspect mode >
.
6. Adjusts with the step which is the same above from 3 to 4
about the 16 : 9 aspect mode, too.