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PC-V77
A
/B/E/G/UIV
Item
Description
2
.
FM IF ALIGNMENT
2-
1
Conditions of the receiver
(1 ) Power source:
Same as mentioned in item
1-
1
(2) Function switch position:
RA
DI
O
(3) Band select switch:
FM
(4) Volume contro
l:
Minimum gain position
(5) SEA control
:
Center position
(6) Variable capacitor:
Near the minimum capacity position where no signal come in
.
2-2
Connection of Sweeper and the receiver
( 1 ) Tuner input
:
Positive side to TP5
(2) Tuner output:
Positive side to TP6
Negative side to TP7
NOTE
a)
Attach a capacitor (30 pF) and resistor (30 kO) to the positive side cable which shall be led from
Sweeper input.
b)
Attach a resistor (100 km in
series
to the positive side cable which shall be led from Sweeper output
.
2-3
Aligning position:
Discriminate Waveform
:
T1
("S
"
curve waveform)
2-4
Alignment (Waveform
):
Adjust the discriminate coil (T1) so that
"
S" curve waveform
may be changed to IF waveform as shown in following
f
igure
.
~
NOTE
The discrim inator
'
s CF is yellow
.
Adjust the discriminate T2 so that above symmetrical IF
Do not use one that is of another color
.
waveform may
be
changed to balanced
" S"
curve waveform
.
3
.
AM
RF
ALIGNMENT
3-
1
Conditions of the receiver.
(1 ) Power source
:
Same as mentioned in item
1-
1
.
(2) Function switch position:
RA
D
IO
(3) Volume
control:
50mW
(4) SEA control
:
Center position
(5
)
Variable capacitor:
Refer the following list shown in item 3-4
.
3-2
Conditions of SSG
.
(1)
Modulation
:
Refer the basic condition
(2) Frequency
:
Refer the following list shown in item 3-4
.
(3) Output level of the attenuator in SSG
:
Approx
.
50 mW
3 -3
Power output measuring position
:
Speaker terminals
3-4
Alignment
:
Band Select
Sort of
An
t enna t
o
be
Frequency of
SSG
Preset
Memory No
.
Alignin
g
Switch Position
attached to SSG
Position
1
520 kHz
M5
L5
2
AM
Turn L5 until the voltage of TP9 becomes 4 .4
±
0.05
v.
3
or MW
4
600 kHz
to be received 600 kHz (M2)
L3
5
(
Adjustments after A
M
(MW) osci lla-
)
1,400 kHz
to be received 1,400 kHz
(M
4)
TC3
6
tion circuit replacement initial sett
-
Adjust the above aligning position (L3 & TC3) repeatedly so that
ing
.
(See page 10)
the tuner can be obtained the best sensitivity.
7
281 MHz
M5
L6
8
Loop
Antenna
Turn L6 until the voltage of TP9 becomes 4.4
±
0 .02 V
.
9
10
LW
164 kHz
to be received 164 kHz (M 1)
L4
11
272 kHz
to be received 272 k Hz
(M
5)
TC-4
12
(B /E/GIV
Adjust the above aligning position (L4 & TC -4) repeatedly so
Version)
that the tuner can be obtained t he best sensitivity
.
(No
.
1740)
9
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