Sansui 2000X - AM Alignment Procedure

ALIGNMENT
AM ALIGNMENT PROCEDURE
NOTE: To align, set the signal generator level to minimum.
FEED | DIAL
STEP ALIGN. | GENERATOR SIGNAL TO TEST EQUIPMENTS | SETTING ADJUST ADJUST FOR
1. LF. 455 kHz Antenna | Oscilloscope Top and bottom Best L.F.
Transfor- +30 kHz terminals {| and V.T.V.M. at sides from the 1st | wave form
mer | Sweep-generator | 3G | LF.T. (Toa) to
i. | the 3rd
i 1) Se (308)
2. O.S.C. AM-generator Antenna Oscilloscope 535kHz | O.S.C. Coil Taos Maximum
535 kHz terminals and V.T.V.M. at |
400 Hz 30% output load
Modulation
|
3. O0.S.C. | AM-generator Antenna Oscilloscope 1600kHz | O.S.C. Trimmer | Maximum
1600 kHz terminals and V.T.V.M. at | TCeos |
400.Hz 30% output load
Modulation | |
| |
4. Reiterate | |
2
and
3
|
i
5. RF amp. | AM-generator Antenna Oscilloscope | 600kHz | RF transformer Maximum
600 kHz terminals and V.T.V.M. at | Tso1
400 Hz 30% output load
Modulation |
6. Antenna AM-generator Antenna Oscilloscope 600kHz | Ferrite bar Maximum
circuit 600 kHz terminals and V.T.V.M. at Antenna
400 Hz 30% output load Ts06
Modulation
ae
RF
amp.
AM-generator
Antenna
|
Oscilloscope
1400kHz
|
RF
Trimmer
Maximum
1400 kHz terminals and V.T.V.M. at TCeoe
400 Hz 30% output load
Modulation
8. Antenna AM-generator | Antenna Oscilloscope 1400kHz | Antenna Maximum
circuit 1400 kHz terminals and V.T.V.M. at circuit
400 Hz 30% output load Trimmer TCgo3
Modulation
9. Reiterate |
5.6.7.8. |
ee (eee
AM IF WAVE FORM
+
=
kHz
—IOkHz 455 .+10kHz |