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m ALIGNMENT INSTRUCTIONS... FM AND AM TUNER CIRCUIT
Note: For adjustment, proceed with the bottom board attached as it is. -
Notes:
1. Selector switch
ee
er Y
et
eee ae
wearer ae fa (AM Alignment)
9. Speakers switch
FM (FM Alignment)
6 . Volume control
FM Muting/mode switch
on/FM auto
Maintain line voltage at rated voltage.
Tape monitor switch............... Source
8.
AM/FM SIGNAL GENERATOR
Sia
CONNECTION
FREQUENCY|
SETTING
to obtain an output reading.
30002
FM dummy antenna
PON
ADJUSTMENT
POINTS
INDICATOR
(VTVM or SCOPE)
(DISTORTION
METER)
AM ALIGNMENT
AM signal generator high
455kHz
1Isi
9
re ne
0.001HF to
eee
) | Point of non-
Connect VTVM or scope
7201 (1st 1ET)
antenna trimmer
wit
ZI | tar torence
to speaker terminal(L or R)
T202 (2nd IFT)
terminal.
[Set for England
or TP201 of set.
to 470k Hz]
600kHz
(30% Mod.
with 400Hz)
Connect VTVM
or scope
to speaker terminal(L or R)
or TP201
of set.
Fashion loop of several
turns of wire and radiate
signal into loop of receiver.
L202 (OSC Coil)
L201 (ANT Coil)
600k Hz
Fashion loop of several
1500kHz
Connect VTVM
or scope
CT5 (OSC Trim
)
3] turns of wire and radiate
(30% Mod.
1500kHz
to speaker terminal (L or R)
CT4 (ANT Teirner!
signal into loop of receiver.|
with 400Hz)
or TP201
of set.
e
FM IF ALIGNMENT
4
No signal
oe
FM Tuning meter of set
T101
Perey
isl
FM RF ALIGNMENT
follies Be care
9OMHz
Connect VTVM or scope
L6 (OSC Coil)
fermiinals through EM
(100% Mod.
9OMHz
to speaker terminal(L or R)
L4 (DET Coil)
dunn antenna.
with 400Hz)
or TP101 of set.
L2 (ANT Coil)
Connect FM signal gene-
106MHz
Conn
:
ect VTVM or scope
CT3 (OSC Trimmer)
rator to 3009 FM antenna
(100% Mod.
106MHz
to speaker terminal(L or R)
CT2 (DET Trimmer)
terminals through FM
FM MONO DISTORTION ALIGNMENT
Connect distortion meter
to left channel speaker
terminal of set.
FM SIGNAL METER ALIGNMENT
with 400Hz)
CT1 (ANT Trimmer)
Connect FM signal gene-
rator to 3002] FM antenna
terminals through FM
dummy antenna.
100MHz
(100% Mod.
with 400Hz)
T101
(Discri |FT)
[Connect FM signal gene-
rator to 300 9 FM antenna] 4QQMHz_
8 | terminals through
(100% Mod.
100MHz
Signal meter of set.
VR101
FM dummy antenna.
with 400Hz)
Apply about 100dB (100mV)
|
FM MUTING
LEVEL
ALIGNMENT
Connect FM signal gene-
rator to 3002 FM antenna
100MHz
Connect VTVM or
9] terminals through
(100% Mod
100MHz
scope to speaker (L or R)
VR102
FM dummy antenna.
with 400Hz)
terminal of set.
Apply 16dB (6.3/V)to set.
SG indication are 28dB (IHF)
FM MPX PILOT ALIGNMENT
Using a frequency counter
Using alternate system
. 98MHz Non-modulated mono signal applied to set.
1.
. FM Muting/Mode switch to ''on/FM auto".
. Connect frequency counter to TP301 through resistor (100k).
Adjust VR301
to 19kHz +30Hz.
10
STEREO SEPARATION ALIGNMENT
Notes:
1.
Stereo modulator
¢ Internal OSC
1kHz
* Pilot signal modulation
« Frequency approximately 98MHz.
¢Modulation mode to FM
2.
FM signal generator..........
3.
Band selector switch
FM SIGNAL GENERATOR
CONNECTION
STEREO MODULATOR
MODE AND MOD. RATE
INDICATOR
(VTVM or SCOPE)
Connect VTVM
or scope to
output terminals through low pass
filter. Refer to fig. 10.
POINT
L (and R)
30% Modulation
3009 FM antenna terminals
11
through FM dummy antenna
112.50
76
1500
|
| To Receiver
To SG
|
(SG imp. 7592),
1K
VR301
,O—E:
Stereo OFF Position.
4.
FM Muting/mode switch..........
ADJUSTMENT
To Receiver
MAIN and REMOTE
to ON
Bide iti
ath Me, oh rcs 18 aan Variable
. Output of signal generator should be no higher than necessary
eee
Refer to fig. 8.
REMARKS
Adjust for maximum
output.
Adjust for maximum
output.
Adjust L201
by moving coil bobbin
along ferrite core.
Adjust for maximum
output.
Repeat steps (2) and (3) |
Adjust for center of
tuning meter indi-.
cation.
Adjust' for maximum
output.
Adjust for maximum
output. Repeat
steps (5) and (6).
Tuning at 1OOMHz
and adjust for mini-
mum distortion.
Repeat steps (4) and (7).
FM Muting/Mode switch
to "'off/FM mono"
Adjust VR101
to
about ''4.7" on signal
meter scale.
FM Munting/Mode
switch to ''on/FM
auto'.
Adjust so that output
can be obtained.
Apply stereo signal from generator or stereo station to receiver.
2. Adjust VWR301
until stereo indicator lights up.
Cement arm of VR301 as shown in fig. 9.
¢Connect stereo modulator output to EXT. MOD. terminal of signal generator.
10%
-Output level to 72dB (IHF)
..
. on/FM auto
REMARK
Adjust for minimum
right (and left) output
To Output
Meter
[S| SA-5370
3002 FM Dummy Antenna
Fig. 8 (Abb. 8)
LOW PASS FILTER
(fc = 15kHz ~19kHz)
Fig. 10 (Abb. 10)
Stereo ON Position (Indicator Lighting).
Adjust Point of Pilot Circuit.
Fig. 9 (Abb. 9)
A-B
B-—D:
C:
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