JVC AV-29WX11 Service Manual page 26

Measuring
Item
instrument
CORNER Signal
adjustment
generator
Remote
control unit
H. PARALLEL Signal
adjustment
generator
Remote
control unit
H. BOW
Signal
adjustment generator
Remote
control unit
1-26 (No. 52197)
Test point Adjustment part
[3. DEF]
9. UP CORNER
10. DW CORNER
[3.DEF]
11. HOR. PARALL
[3.DEF]
12. HOR. BOW
Straight
Description
– PAL CORNER –
(1) Receive a PAL cross-hatch signal.
(2) Select 9. UP CORNER.
(3) Set the initial setting value of 9. UP CORNER.
(4) Select 10. DW CORNER.
(5) Set the initial setting value of 10. DW CORNER.
(6) Adjust 9. UP CORNER and 10. DW CORNER so that the
vertical lines at the four corners on the screen are straight.
– NTSC CORNER –
(1) Receive a NTSC cross-hatch signal.
(2) Make similar adjustment of NTSC CORNER in the same
way as for "PAL CORNER".
– PAL H. PARALLEL –
(1) Receive a PAL cross-hatch signal.
(2) Select 11. HOR. PARALL.
(3) Set the initial setting value of 11. HOR. PARALL.
(4) Adjust 11. HOR. PARALL to optimize the parallelogram
distortion.
– NTSC H. PARALLEL –
(1) Receive a NTSC cross-hatch signal.
(2) Make similar adjustment of NTSC H. PARALLEL in the
same way as for "PAL H. PARALLEL".
– PAL H. BOW –
(1) Receive a PAL cross-hatch signal.
(2) Select 12. HOR. BOW.
(3) Set the initial setting value of 12. HOR. BOW.
(4) Adjust 12. HOR. BOW to optimize the horizontal arc
distortion.
– NTSC H. BOW –
(1) Receive a NTSC cross-hatch signal.
(2) Make similar adjustment of NTSC H. BOW in the same
way as for "PAL H. BOW".
(3) Press the [DISPLAY] key twice to return to the normal
screen.