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= ALIGNMENT INSTRUCTIONS
10
11
12
[Apply about 100dB (0.1V)
Notes:
1. Selector switch .....
AM (AM Alignment)
4. Output of signal generator should be no higher than necessary
FM (FM Alignment)
to obtain an output reading
2. Muting/FM mode
...
off/FM mono
5. 30092
FMdummy
antenna..... Refer to fig. 4
3. Maintain line voltage at rated voltage
AM/FM SIGNAL GENERATOR
DIAL
INDICATOR
ADJUSTMENT
CONNECTION
FREQUENCY
(DISTORTION METER)
AM ALIGNMENT
455kHz
(30% Mod.
AM signal generator high
with 400Hz) | Point of non-
Connect VTVM or scope. .
T201 (ist FT)
Adjust for maximum
rt through 0.0014 'A to
|
[Set for
inter-ference
(L sa res oe
1202 (2nd IFT)
output.
antenna terminal.
England
ee
a
T203 (3rd IFT)
to 470kHz!]
Fashion loop of several'
600kHz
Connect VTVM
or scope
Adjust for maximum
turns of wire and radiate
(30% Mod.
600kHz
to output terminal
L203 (OSC Coil)
output. Adjust L201
signal into loop of tuner.
with 400Hz)
(L or R) of set.
L201 (ANT Coil)
by moving coil bobbin
along ferrite core.
Fashion loop of several
1500kHz
Connect VTVM
or scope
'
Adjust for maximum
i turns of wire and radiate
(30% Mod.
1500kHz
to output terminal
a
te
output.
signal into loop of tuner.
with 400Hz)
|
(L or R) of set
Repeat steps (2) and (3)
;
FM IF ALIGNMENT
:
6
a t
Adjust for center of
Point of non-
;
T101 (Discri 1FT)
:
eas
|
noses
inter-ference
| [uning meter of set
Primary [Al
| —
meter inet:
Connect FM signal gene-
rator to 3002] FM antenna
SOMHz
terminals through FM
dummy antenna.
illite a en ae
106MHz
Connect VTVM
or scope
CT3 (OSC Trimmer)
Adjust for maximum
farminals throuch:EM
(100% Mod.
106MHz
to output terminal (L or R)
CT2 (DET Trimmer)
output. Repeat
auiancen Abescs
with 400Hz)
or TP101 of set
CT1 (ANT Trimmer)
steps (5) and (6)
Connect VTVM
or scope
3 (OSC Coil)
'
as
(100% Mod.
90MHz
to output terminal (L or R)
L2 (DET Coil)
Adjust for maximum
with 400Hz)
or TP101 of set
L1 (ANT Coil)
output.
FM MONO DISTORTION ALIGNMENT
Connect distortion meter
to cutput terminal
(L or R) of set.
Connect FM signal gene-
rator to 3002 FM antenna
aay as
100MHz
with 400Hz)
Tuning at 100MHz
and adjust for mini-
mum distortion.
Repeat steps (4) and (7)
T101 (Discri !FT)
Secondary [B]
terminals through FM
dummy antenna
FM SIGNAL METER ALIGNMENT
100MHz
FM MUTING LEVEL ALIGNMENT
100MHz
FM MPX PILOT ALIGNMENT
Connect FM signal gene-
FM dummy
antenna.
meter scale.
Connect FM signal gene-
rator to 3002 FM antenna
13dB (4.54V) to set. SG
indication are 25 dB (IHF)
Using a frequency counter
1. 98MHz Non-modulated mono signal applied to set.
2. Muting/FM
mode switch to''on/FM auto".
3. Connect frequency counter to TP301 through resistor (100k).
4
Adjust VR301 to 19kHz +30Hz.
Using alternate system
1.
Apply stereo signal from generator or stereo station to tuner.
2. Adjust VR301 until stereo indicator lights up.
Cement arm of VR301 as shown in fig. 5.
STEREO SEPARATION ALIGNMENT
INDICATOR
(VTVM or SCOPE)
Connect VTVM or scope to
output terminals through low pass
filter. Refer to fig. 6.
RECORDING CHECK LEVEL OUTPUT ALIGNMENT
ADJUSTMENT
POINT
REMARK
Adjust for minimum
right (and left) output
STEREO MODULATOR
MODE AND MOD. RATE
L (and R)
30% Modulation
FM SIGNAL GENERATOR
CONNECTION
3002 FM antenna terminals
through FM dummy antenna
VR402
( Adjust VR401 so that the output is then 6dB
less than the previous output.
ST-7300
aan.
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