JVC AV-25MT35/P Service Manual page 23

COMPRESS: OFF (4:3)
Measuring
Item
instrument
V. SLOPE Signal
adjustment generator
Remote
control unit
V. POSITION Signal
adjustment generator
Remote
control unit
V. HEIGHT Signal
adjustment generator
Remote
control unit
Screen
size
92%
H. POSITION Signal
adjustment generator
Remote
control unit
C
Test point Adjustment part
[4. DEF]
2. V-SLOPE
A
Blanking
line
B
[4. DEF]
1. V-SHIFT
[4. DEF]
3. V-SIZE
Picture
size
100%
[4. DEF]
4. H-CENT
D
Description
- 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 twice 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".
- PAL V. POSITION -
(1) Receive a PAL circle pattern signal of vertical
frequency 50Hz.
(2) Select 1. V-SHIFT.
(3) Set the initial setting value of 1. V-SHIFT.
(4) Adjust 1. V-SHIFT to make "A = B".
- NTSC V. POSITION -
(1) Receive a NTSC circle pattern signal of vertical
frequency 60Hz.
(2) Make similar adjustment of NTSC V. POSITION in
the same way as for "PAL V. POSITION".
- PAL V. HEIGHT -
(1) Receive a PAL crosshatch signal.
(2) Select 3. V-SIZE.
(3) Set the initial setting value of 3. V-SIZE.
(4) Adjust 3. V-SIZE to make the vertical screen size to
92% of the picture size.
- NTSC V. HEIGHT -
(1) Receive a NTSC crosshatch signal.
(2) Make similar adjustment of NTSC V. HEIGHT in the
same way as for "PAL V. HEIGHT".
- PAL H. POSITION -
(1) Receive a PAL circle pattern signal.
(2) Select 4. H-CENT.
(3) Set the initial setting value of 4. H-CENT.
(4) Adjust 4. H-CENT to make "C = D".
- NTSC H. POSITION -
(1) Receive a NTSC circle pattern signal.
(2) Make similar adjustment of NTSC H. POSITION in
the same way as for "PAL H. POSITION".
(No.YA275)1-23