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~
(Front End) |
ee
TC2
(Front
End)
Tuner
Unit
(Front
End)
ie
LS
Figure
7 ALIGNMENT
POINT
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GENERAL
ALIGNMENT
INSTRUCTIONS
Should it become necessary at any time to check the alignment of this receiver, proceed as follows;
1)
Connect an output meter across the speaker voice coil lugs.
2) . Set the volume control at maximum.
3)
Attenuate the signals from the generator enough to swing the most sensitive range of the output meter.
4)
Use anon-metallic alignment tool.
5)
Repeat adjustments to insure good results.
LW/MW
ALIGNMENT
CHART
Set the band selector switch at "MW" or "LW" position.
SIGNAL GENERATOR
CONNECTION TO
INPUT SIGNAL
RECEIVER
FREQUENCY
RECEIVER
BAND
STEP
Connect signal genera- | Exactly 452kHz
High end of dial
| Adjust for maxi-
T2
tor through a dummy
(400Hz, 30%, AM
{minimum
mum output on
If
to the antenna socket
modulated)
inductance)
speaker voice coil
(SO1) Ground lead to
lugs.
the receiver chassis.
(Refer to Figure 8.)
IF
Repeat until no further improvement can be made.
Same as step 1.
Exactly 510kHz.
Low end of dial
(maximum
Same as step 1.
R
IS PF
|
|
TO EXT.
ANTENNA
SOCKET.
R=80-Z
(ohm)
IMPEDANCE
OF
65PF
Z = OUTPUT
SIGNAL
GENERATOR
Adjust the MW oscillator
(400Hz, 30%, AM..
coil L5.
modulated)
inductance}
-
ume
C eel '
Same as step 1.
Exactly 1650kHz
High end of dial
| Sameas step 1.
Adjust the MW oscillator
ree
(400Hz, 30%, AM | (minimum
trimmer TCS.
_ modulated)
inductance)
Same as step 1.
Exactly 1400kHz
1400kHz.
Same as step 1.
Adjust the MW antenna
.
:
(400Hz, 30% AM
trimmer TC1, and then
Tracking
modulated)
adjust the MW RF
trimmer TC3.
Mw
Repeat steps 3 and 4 until no further improvement can be made.
Su
——____j—_______|
Same as step 1.
Exactly 145kHz
l.ow end of dial
| Same as step 1.
Adjust the LW oscillator
400Hz, 30%, A
(maximum
trimmer TC4
modulated)
inductance)
1
6
LW
ed
,
Same as step 1.
Exactly 310kHz
High end of dial | Same as step 1.
Adjust the LW oscillator
?
| (400Hz, 30%, A
(rninimum
coil L4.
Momodulated
inductance)
|
Same as step 1.
Exactly 260kHz
260k tz.
Same as step 1.
Adjust the LW antenna
7
LW
Tracking
400Hz, 30%, AM
coil L2, and then adjust
moduleted}
the LW RF coil L3.
8
LW
Repeat steps 6 and 7 until no further improvement can be made.
—_——_—_—_—=
TO CHASSIS
GROUND.
Figure
8 AM
DUMMY
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