JVC AV-21L91-BK Service Manual page 35

Measuring
Item
instrument
Adjustment Signal
of
generator
HOR. WIDTH
Remote
control unit
Screen size 91%
Screen
size
91%
Picture size 100%
Adjustment Signal
of
generator
EW-PIN
Remote
control unit
Straight
Adjustment Signal
of
generator
EW-TRAPEZ
Remote
control unit
Parallel
Test point Adjustment part
6. HOR. WIDTH
Picture
size
100%
7. EW-PIN
8. EW-TRAPEZ
No. 51898
Description
19. Receive a PAL cross-hatch signal.
20. Select 6. HOR. WIDTH with the MENU &/^ key.
21. Set the initial setting value of 6. HOR. WIDTH with the MENU –/+
key.
22. Adjust 6. HOR. WIDTH and make the horizontal screen size 91%
of the picture size with the MENU –/+ key.
23. Select 7. EW-PIN with the MENU &/^ key.
24. Set the initial setting value of 7. EW-PIN with the MENU –/+ key.
25. Adjust 7. EW-PIN so that the first vertical lines at the left and right
edges on the screen are straight.
26. Select 8. EW-TRAPEZ with the MENU &/^ key.
27. Set the initial setting value of 8. EW-TRAPEZ with the MENU –/+
key.
28. Adjust 8. EW-TRAPEZ so that the vertical lines at the left and right
edges on the screen are in parallel.
(to be continued)
AV-25L91
AV-29L91
35