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Control Positions:
. VolumeControl
............0.2.20002000- Maximum
(AM-IF and RF, FM-RF), FM-RF
(Center),
Minimum
(FM-1F)
. . Batid Selectors
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BS Bae
kh Paw
tie ee 6 LW, MW, FM and Direct
Radio Switeh
vss. knee 8
SA
Se
wR
ee
Pee
P a m
0 1 [1 -:
FM Mode Switch
............2.2. 200000
. Speaker Switch...
2...
2
ee
ee ee ee
. Output of signal generator should be no higher than necessary to obtain output reading.
. Make certain that speaker system is connected to the receiver when aligning.
(or use 42. dummy load resistors.)
SIGNAL GENERATOR OR
SWEEP GENERATOR
DISPLAY
INDICATOR
(VTVM or SCOPE)
ADJUST
CONNECTION | FREQUENCY
AM-IF AND RF ALIGNMENT
REMARKS
450 kHz
:
T203 (1st 1FT)
Point of non-
30% Mod.
interference
T204 (2nd IFT)
with 400 Hz
T205 (3rd IFT)
137 kHz
* Adjust for maximum
output.
+ Set CT102 and CT104
- Adjust for maximum
- Adjust for maximum
- Repeat steps (2) and (3).
- Adjust CT104 for 9V on
- Repeat steps (2), (3)
+ Set CT101 and CT103
- Adjust for maximum
- Adjust for maximum
- Adjust for maximum
output by sliding coil
L2 along ferrite core.
- Adjust L103 for 1V on
VTVM
reading only. if
TP103 is less than 1V
(on VTVM reading).
VTVM reading only if
TP103 more than 9V
(on VTVM reading).
to center position.
output by sliding coil L1
- Adjust for maximum
- Repeat steps (7) and (8).
| - Adjust L102 for 1V on
VTVM reading only if
TP103 is less than 1V
(on VTVM reading).
- Adjust CT103 for 9V on
2
Once
R a i
uit a
Sans
tiapnmenriuny
| to center
(LW)
30% iViod.
137 kHz
Output meter across
L103
(LW OSC Coil)
with 400 Hz
speaker jack (L).
output.
(Imp. 4).
3
150 kHz
(LW)
30% Mod.
150 kHz
L2 (LW ANT Coil)
with 400 Hz
' Refer to NOTE.
350 kHz
eer
30% Mod.
360 kHz
CT102 (LW ANT
output.
with 400 Hz
Trimmer)
no signal
137 kHz
L103 (LW OSC Coil)
5
Connect DC VTVM
(LW)
between TP103 and
TP104 (Earth).
|
Fashion loop of
:
CT104
(LW OSC
several turns of
nosions
350 kHz
Trimmer)
wire and radiate
signal into loop
and (4).
of receiver.
6
520 kHz
(Mw)
30% Mod.
520 kHz
L102 (MW OSC Coil)
with 400 Hz
output.
Output meter across
7
550 kHz
speaker jack (L).
7
:
(MW)
igre
550 kHz
(Imp. 42).
L1 (MW ANT Coil)
along ferrite core.
{
- Refer to NOTE.
1500 kHz
ine
30% Mod.
1500 kHz
een Ho ANT:
output.
with 400 Hz
|
ee
no signal
520 kHz
L102 (MW OSC Coil)
Connect DC VTVM
between TP103 and
(mw)
TP104 (Earth).
CT103 (MW OSC
Trimmer)
no signal
4500 kHz
NOTE:
Cement antenna coil (L1 and L2) with wax after completing alignment.
FM-IF ALIGNMENT
High side through
10.7 MHz
Connect vert. amp
1 pF between
Point of non-|
input of scope
1
point TP101 and
SeWer
interference
between point TP206
L3 (FM Tuner Pack)
TPE (Earth).
:
and TP204 (Earth)
Connect DC VTVM
2
No connection
no signal
between TP201
T201
(FM Disc)
and TP202
VTVM
reading only if
TP103 more than 9V
(on VTVM reading).
- Repeat steps (6), (7)
cand (8).
* Adjust L3 for maximum
amplitude and sym-
metrical curve.
- Adjust T201 for
OmV on VTVM
reading.
NOTE:
As three output readings will be present, adjustments must be made at center frequency.
SG-65
7]
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