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7.
AFT Adjustment
Item
DC 15.oV
IF AGC(3.5-
4.5V)
Setting Band
Output Probe
Input Probe
DC 12V(with Jig-A)
Resonance Frequency
Adjustment (Rouah)
Resonance Frequency
Adjustment (Fine)
AGC Voltsge Alignment
—
c
o .-
Z
al
c
c
8
c
0 .—
.%
-u
c
s
K2B pin-4
(or IC671 pin-1)
IC101 pin-48
No Band(with Jig-B)
Tuner-TP
TP-F
Tuner-TU
K2B pin-4
(or IC671 pin-1)
IC101 pin-48
No Band(with Jig-B)
Tuner-TP
IC101 pin-44
Tuner-TU
K2B pin-4
(or IC671 pin-1)
IC101 pin-48
No Band(with Jig-B)
Tuner-TP
ICI 01 pin-44
Tuner-TU
Sweep ATT
Output Probe
Dumping Resistor
Oscilloscope
Sens.
System
SG Output
25 dB
side b
R124
100mV/div
PAL (with Jig-A side b)
None
25 dB
side b
Not used
1Vldiv
PAL (with Jig-A side b)
35dB
25 dB
side b
Not used
1Vldiv
PAL (with Jig-A side b)
35 dB
Keep AGC voltage.
Set the VIF Adjustor
Sweep
off and pix. SG to CW output.
Using
T1 31,
adjust
DC
voltage to be 3.6V * 0.2V.
Fix the AGC
voltage
when
the
overall waveform
level is adjusted
at l. OVp-p.
Keep AGC voltage,
and Confirm
the maker position
P is near by
the reference line,
Adjustment
38.9 MHz marker
f
./
reference line
Waveform
Output Probe
JIG- A(System)
33K Q
a
~:.;.:.:.;.;.:.:.;.::\
100 S2 ~ Darnp!ng ,fieslstor
:: :::..
::.::;'
... .
\QYa
.Oscilloscope
Tuner TP
w
u
CN702
\oD
v
RI 24(Solder
-
Base
side)
JIG-B
(No Band)
MAIN UNIT
2.2K O
P
i
OFF
5V
2.2KQ12V
ON
5V
I
pin
d
181
4
@+
T103
E
T101
uou
A==
K2C
4-pin
IC672
- Tuner TP
FL
–20–
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