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VIF Adjustment
Overall Waveform Adj.
Oscilloscope
k
—
c
o .-
:
al
c
c
~
—
c
0 .=
.-
-0
c
6 —
R368(C364 side)
ICI 01- pin48
No band
DC 15V
IF AGC(3.5-4.5V)
BAND
Output Probe
Input Probe
Ground
SIF System
Sweep ATT.
Output Probe
Oscilloscope
Sens.
R368(C364
side)
IC101 - pin48
No band (Q784-Base * Ground,
through 1k C?resistor)
TUNER-IF
Q1 22- Emitter
TP-A
TUNER-IF
Q1 22- Emitter
TP-A
100 S2 Dumping Resistor*R124
any
18dB
any
18dB
side a
100mV/DIV
side a
100mV/DIV
Adjust the overall waveform level
to become lVP – p with IF AGC
VOLTAGE.
Adjust P (38.9MHz) to be
Adjustment
maximum amplitude
by using
T121 .
D
A
J
Waveform
078?
J
o
D,
cm
w
0793
07C6
!'37
~,18
-
Input Probe
D
07M
Bcasd
&
0%1
Omo
-#%Ft-
7
1311
cONVERTER
TR4NS.
lc7m
MEMORY
/
o
u
L
x--
I
0
cm
0
L441
Detector Adj.
.----'
-a
100 S2
Dumping
Resistor
a
U242
KDY
H- WIDTH
Y%
0702
"";
G
Output Probe
w
T471
F,B.T.
-J
'%
DOWN ~
UP
VERT. CENTER
MAIN
UNIT
Nclu m
(RlOHn
AUDn
WT
AUW3
M
(Em
(lEFT)
(h
Band Setting)
-"77
lKQ
–8–
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