JVC AV-25MT35/P Service Manual page 26

Measuring
Item
instrument
H. BOW Signal
adjustment generator
Remote
control unit
COMPRESS : ON (16:9)
Measuring
Item
instrument
V. HEIGHT Signal
adjustment generator
Remote
control unit
Screen
size
V. SLOPE Signal
adjustment generator
Remote
control unit
1-26 (No.YA275)
Test point Adjustment part
[4.DEF]
11. BOW
Straight
Test point Adjustment part
[4.DEF]
14. V. ZOOM
3. V-SIZE
Screen size
Vertical
amplitude
[4.DEF]
2. V-SLOPE
A
Blanking
line
B
Description
- 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.
Description
- PAL V. HEIGHT -
(1) Receive a PAL crosshatch signal of vertical
frequency 50Hz.
(2) Press the [MENU] key and select PICTURE.
(3) Select PICTURE FEATURES.
(4) Select COMPRESS (16 : 9) and set COMPRESS to
ON.
(5) Select 4. DEF from the SERVICE MENU.
(6) Set the initial setting value of 14. V. ZOOM.
(7) Select 3. V-SIZE.
(8) Set the initial setting value of 3. V-SIZE.
(9) Adjust 3. V-SIZE to set the vertical amplitude of the
image to 280mm.
- NTSC V. HEIGHT -
(1) Receive a NTSC crosshatch signal of vertical
frequency 60Hz.
(2) Make similar adjustment of NTSC V. HEIGHT in
the same way as for "PAL V. HEIGHT".
- PAL V. SLOPE -
(1) Receive a PAL circle pattern signal of vertical
frequency 50Hz.
(2) Select 4. DEF from the SERVICE MENU.
(3) Select 2. V-SLOPE.
(4) Set the initial setting value of 2. V-SLOPE.
(5) Adjust 2. V-SLOPE to make "A = B".
(6) Press the [DISPLAY] key to return to SERVICE
MENU screen.
- NTSC V. SLOPE -
(1) Receive a NTSC circle pattern signal of vertical
frequency 60Hz.
(2) Make similar adjustment of NTSC V-SLOPE in the
same way as for "PAL V-SLOPE".