JVC AV-29WX14/G Service Manual page 27

Measuring
Item
instrument
CORNER PIN Signal
adjustment
generator
Remote
control unit
H. PARALLEL
Signal
adjustment generator
Remote
control unit
H. BOW Signal
adjustment
generator
Remote
control unit
Test point Adjustment part
[4. DEF]
8. COR-UP
9. COR-LO
Parallel
[4.DEF]
10. ANGLE
Parallel
[4.DEF]
11. BOW
Straight
Description
- PAL CORNER PIN -
(1) Receive a PAL crosshatch signal.
(2) Select 8. COR-UP.
(3) Set the initial setting value of 8. COR-UP.
(4) Select 9. COR-LO.
(5) Set the initial setting value of 9. COR-LO.
(6) Adjust 8. COR-UP and 9. COR-LO so that the vertical lines
at the four corners on the screen are straight.
- NTSC CORNER PIN -
(1) Receive a NTSC crosshatch signal.
(2) Make similar adjustment of NTSC CORNER in the same
way as for "PAL CORNER".
- PAL H. PARALLEL -
(1) Receive a PAL crosshatch signal.
(2) Select 10. ANGLE.
(3) Set the initial setting value of 10. ANGLE.
(4) Adjust 10. ANGLE to optimize the trapezium distortion at
the centre of the screen.
- NTSC H. PARALLEL -
(1) Receive a NTSC crosshatch 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 crosshatch signal.
(2) Select 11. BOW.
(3) Set the initial setting value of 11. BOW.
(4) Adjust 11. BOW to optimize the horizontal arc distortion.
- NTSC H. BOW -
(1) Receive a NTSC crosshatch 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.
(No. YA104) 1-27