(No.YA080)1-15
4.6.4 IF ADJUSTMENT
4.6.5 AGC AUTOMATICALLY ADJUSTMENT
4.6.6 DEFLECTION ADJUSTMENT
Item
Measuring
instrument
Test point
Adjustment part
Description
IF adjustment
Remote
control unit
IF1
IF2
IF3
IF4
(1) Receive a PAL colour bar pattern.
(2) Enter the SERVICE MODE.
(3) Select IF 1 with the [
]/[
] key.
(4) Press [BLUE] key during IF 1 is highlighted, IF 1 and
IF 2 values are adjusted automatically by software.
(5) If the standard is L-prime, IF 3 and IF 4 values are
adjustment automatically when [BLUE] key is
pressed during IF 1 is highlighted.
Item
Measuring
instrument
Test point
Adjustment part
Description
AGC
AUTOMATICALLY
adjustment
Remote
control unit
AGC
(1) Receive a 60dB
µ
V RF signal level.
(2) Enter the SERVICE MODE.
(3) Select AGC with the [
]/[
] key.
(4) Press [BLUE] key.
(5) The adjustment will be done automatically by
software.
(6) See the AGC indicator on SERVICE MENU, it must
be "1".
(7) Check that picture is normal at 90dB
µ
V signal level.
Item
Measuring
instrument
Test point
Adjustment part
Description
VERTICAL
SIZE OFFSET
(60Hz)
adjustment
Signal
generator
Remote
control unit
VSOF
(1) Receive a NTSC crosshatch pattern of vertical
frequency 60Hz.
(2) Enter the SERVICE MODE.
(3) Select VSOF with the [
]/[
] key.
(4) Adjust VSOF with the [
]/[
] key until the horizontal
black lines on both the upper and lower part of the
pattern become very close to the upper and lower
horizontal sides of picture size and nearly about to
disappear.
(5) Check and readjust VSOF item if the adjustment
becomes improper after some other geometric
adjustments are done.
JVCAK30/37 B20
OSD
IF1
IF2
IF3
IF4
AGC
VLIN
RGBH
VSOF
VPOF
: 1 1 AVL
IF INDICATOR AGC INDIXATOR
NON
:
1
1
Screen
size
Very close
Very close
Picture
size
100%
