JVC AV-20NX3 Service Manual page 23

DEFLECTION CIRCUIT ADJUSTMENTS
The setting (adjustment) using 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 setting values.
Note:
Proceed to the following adjustment after having completed the adjustments of SUB BRIGHT and SUB PICTURE.
[SUB MENU 3. DEF]
Setting
Variable range
(Adjustment)
item
1. VER. SLOPE
2. VER. HEIGHT
3. VER. POSITION
4. VER. SCURVE
5. HOR. POSITION
6. HOR. WIDTH
7. EW-PIN
8. EW-TRAPEZ
9. UP CORNER
10. DW CORNER
11. HOR. PARALL
12. HOR. BOW
13. V.ZOOM
[COMPRESS (16:9) : OFF, fv: 50Hz mode]
Measuring
Item
instrument
Adjustment Signal
generator
of
V. SLOPE
Remote
control unit
Adjustment Signal
of generator
V. POSITION
Remote
control unit
50Hz
–32 — +31 0
–32 — +31 +31
–32 — +31 0
–32 — +31 –21
–32 — +31 0
–32 — +31 0
–32 — +31 0
–32 — +31 0
–32 — +31 0
–32 — +31 0
–32 — +31 0
–32 — +31 0
–32 — +31 +2
Test point Adjustment part
1. VER. SLOPE
A
Blanking
line
B
3. VER. POSITION
A
B
Initial setting value
4:3 COMPRESS(16:9)
60Hz 50Hz
0 0
+31 0
0 0
0 -21
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
–1 +7
1. Receive a PAL circle pattern signal of vertical frequency 50Hz.
2. Select 3. DEF from the SERVICE MENU.
3. Select 1. VER. SLOPE with the MENU &/^ key.
4. Set the initial setting value of 1. VER. SLOPE with the MENU */T
key.
5. Adjust 1. VER. SLOPE to make "A = B" with the MENU */Tkey.
6. Select 3. VER. POSITION with the MENU &/^ key.
7. Set the initial setting value of 3. VER. POSITION with the MENU
*/Tkey.
8. Adjust 3. VER. POSITION to make "A = B" with the MENU */Tkey.
(to be continued)
No. 52079
AV-20NX3
COMPONENT
DVD (50Hz)
60Hz
0 —
0 —
0 —
0 —
0 +7
0 —
0 —
0 —
0 —
0 —
0 —
0 —
+9 —
Description
23