JVC AV-21L91-BK Service Manual page 37

[fv : 60Hz mode]
Measuring
Item
instrument
Signal
Adjustment
of generator
VER. SLOPE
Remote
control unit
Signal
Adjustment
of generator
VER.POSITION
Remote
control unit
Adjustment
Signal
of
generator
V. ZOOM
Remote
control unit
Screen size
Screen
size
91%
Picture size 100%
Test point Adjustment part
1. VER. SLOPE
A
Blanking
line
B
3. VER. POSITION
A
B
2. VER. HEIGHT
13. V. ZOOM
Picture
size
100%
No. 51898
Description
1. Receive a NTSC circle pattern signal of vertical frequency 60Hz.
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 –/+
key.
5. Adjust 1. VER. SLOPE to make "A = B" with the MENU –/+ key.
6. Select 3. VER. POSITION with the MENU &/^ key.
7. Set the initial setting value of 3. VER. POSITION with the MENU
–/+ key.
8. Adjust 3. VER. POSITION to make "A = B" with the MENU –/+ key.
9. Receive a NTSC cross-hatch signal.
10. Select 2. VER. HEIGHT with the MENU &/^ key.
11. Set the initial setting value of 2. VER. HEIGHT with the MENU –/+
key.
12. Select 13. V. ZOOM with the MENU &/^ key.
13. Set the initial setting value of 13. V. ZOOM with the MENU –/+ key.
14. Adjust 13. V. ZOOM and make the vertical screen size 91% of the
picture size with the MENU –/+ key.
(to be continued)
AV-25L91
AV-29L91
37