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VIF Adjustment
Item
Detector Adj.
Overall Waveform(PAL)
DC 15.5V
lC551-pinl
IC551 – pinl
:
IF AGC(3.5-4.5V)
ICI 01- pin48
ICI 01- pin48
:
BAND
UHF(with Jig-A)
UHF(with Jig-A)
:
Output Probe
Tuner-TP
Tuner-TP
~
Input Probe
TP-F
TP-F
Sweep ATT.
25 dB(TTL)
25 dB(TTL)
:
Output Probe
side b
side b
g
Dumping Resistor
not used
R1 24(100 S2resister)
c
Oscilloscope
Sens.
100mV/DIV
100mV/DIV
3
Adjust P (38.9MHz) to
Usin
Tuner Converter Coil
f
and
101, adjust the marker
be maximum by usin9
position to be
Adjustment
T121 .
P 38.9 MHz)=45% * 10%
\
c
34.47 MHZ)=45%
t 10%
Waveform
~
>1:~1
PROG,
LEVEL
DC15.5V
+-
Main Unit
s
u
u
u
ncl
f
D
o
0
3(
PS501
P
p;
Da
D
RSUZ
B
'BD
IC551
R
60715
~,g,
.
0
0553
m"
,
St
ADJ,
TP– E
in
-
fio
El
)%)
u
,—!
o
0
TP-F#
a
~
o
IC451
o
VERT. AMP.
SW220
\
—1
w
f
R124
f
IIu
II
i
o
~oal
T431
?
H- DRIVE
o
TRANS
h+'
n
I
1
.-
L
C2
H DEIAY
/'
r
K812
Input Probe
'+!!5
Oscilloscope
.
Detector Adj.
=3
100 Q Damping
Resistor
Output Probe
l—
I
J
– 1P
{:
~=
IC71 o
2.2K Q
pin 3
~
5V
Ji
-A
2.2K Q
(U~F
pin@
band)
5V
J-
E-.l q~
. .
~kn-++1
\
DC3.5-4.5V
J
\*
–8–
Overall Waveform(PAL) Adj.
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