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5
Vertical
geometry for
NTSC system
(Key 3)
6
Horizontal
geometry for
PAL system
(Key 4)
7
Horizontal
geometry for
NTSC system
(Key 5)
8
Key 6
(Status
adjustment)
(c
urve of volume
control)
VPOS60 (00)
Input a NTSC cross
HIGH60 (21)
VLIN60 (05)
VSC60 (08)
OSD60 (2B)
H
POS50 (0F)
Input a PAL cross
HSIZE50 (18)
hatch pattern with
PARA50 (18)
black and white
TRAP50 (0C)
CORN50 (0D)
VEHT50 (03)
HEHT50 (04)
HPOS60 (14)
Input a NTSC cross
HSIZE60 (18)
hatch pattern with
PARA60 (1A)
black and white
TRAP60 (0D)
C
ORN60 (0D
)
V
EHT60 (02)
HEHT60 (04)
RFAGC (35)
Receive a 60dB grey
P
IFAFT (44)
scale + color bar
HAFC (00)
S-
B-Y (08)
S-
R-Y (08)
V
LOMAX (7E)
VOL05 (48)
VOL25 (65)
VOL50 (70)
Adjust VPOS60 for vertical position.
hatch pattern.
Adjust HIGH60 for vertical amplitude.
Adjust VLIN60 for vertical linearity.
Adjust VSC60 for vertical S-correction
Adjust OSD60 for OSD position (normally use
default value).
Adjust HPOS50 for horizontal position.
Adjust HSIZE50 for horizontal width.
Adjust PARA50, TRAP50 and CORN50 until th
background.
vertical line at left and right side of the picture
become straight.
VEHT
when
Receive pattern of cross hatch with black
background and then change to white backgroun
then compare the vertical and horizontal s
between black and wh
VEHT and HEHT until you get the minim
difference of screen size. After you adjust VEHT
and HEHT, you must re-adjust vertical and
horizontal amplitude.
Adjust HPOS60 for horizontal position.
Adjust HSIZE60 for horizontal width.
Adju
background.
vertical
become straight.
Adjust VEHT and HEHT using same method of
PAL system. Also need re-adjustment of vertical
and horizontal amplitude.
RFAGC – monitor the voltage at AGC pin of the
tuner. Then increase the setting of RFAGC until
signal
the tuner AGC volta
5V). Then decrease the RFAGC setting until the
AGC voltage just drop.
Adjust S-B-Y and S-R-Y to get the optimal color
for SECAM system.
Please keep the PIFAFT value after auto AFT
adjustment.
HAFC item must use the default value
---------
VOLMAX is the volume output level at
VOL05 is the volume output level at 5
VOL25 is the volume output level at 25%
VOL50 is the volume output level at 50%
Rem
ark: The value of VO
was not suggested to vary in every set. It is suggested
to use the default value.
48--60
and HENT is for the picture size stability
changing the brightness of the screen.
ite background. Adjust
st PARA60, TRAP60 and CORN60 until th
line at left and right side of the
ge reach maximum (about
L05, VOL25 and VOL50
e
d,
ize
um
e
picture
.
100%.
%
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