JVC AV-20NMG3 EN - Manual (Page 27)

No. 52025
AV-20N3
AV-20NMG3
AV-20NMG3B
27
DEFLECTION CIRCUIT ADJUSTMENT
" There are 2 modes of adjustment (s etting value) ------ ① 50Hz mode and ② 60Hz mode ----- depending upon the kind of s ignals
(vertic al frequency 50Hz / 60Hz).
" When adjusted in mode ① , mode ② will be automatically s et.
The setting (adjustmen t) usin g the REMOTE CONTROL UNIT is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial settin g values.
Item
Measuring
instrument
Test point Ad justment part Description
Ad justment
of
V.HEIGHT
&
V.POSITION
Signal
generator
Remote
control unit
1. VER. POSITION
3. VER.
HEIGHT
1. Input a circle pattern signal.
2. Enter the SERVICE MENU.
3. Select 3. DEF. from SERVICE MENU.
4. Select 1. VER. POSITION with the MENU ▼/▲ key.
5. Set the initial setting value with the MENU - / + key.
6. Adjust V and V’ to be equal with the MENU - / + key as s hown in
Fig.2.
7. Input a cross -hatch signal.
8. Select 3. V. HEIGHT with the MENU ▼/▲ key.
9. Set the initial setting value with the MENU - / + key.
10. As s hown in Fig.1, adjust VER. HEIGHT and mak e the vertical
screen size 92% of the picture size with the MENU - / + keys of
remote control unit.
Ad justment
of HOR.
POSITION
Signal
generator
Remote
control unit
2.HOR. POSITION 11. Input a circle pattern signal.
12. Select 2. HOR POSITION with the MENU ▼/▲ key.
13. Set the initial setting value of 2. HOR. POSITION with the
MENU - / + key.
14. Adjust 2. HOR. POSITION to make H=H" as shown in Fig.2
with the MENU - / + key.
Scre en size
Picture size 1 00%
Scre en
size
92%
Picture
size
10 0%
Fig.1
H H"
Fig.2
V
V'
DEF
- / + : OPERATE DISP : EXIT
***
SUB MENU 3. DEF
/ :SELECT
50Hz
1. VER. POSITION
PAL