Sony CRF-150 Service Manual page 16

31. IF ALIGNMENT
Test Equipment/Tools Required: 10.7 MHz Sweep Generator
Rf signal generator (for fm and a-m)
Oscilloscope
утум
Loop antenna
Screw driver for alignment
SECTION 3
ADJUSTMENT PROCEDURES
1. FM IF ALIGNMENT
Preparation: Band selector: FM
AFC; OFF
Selectivity: SHARP
Local/DX: DX
Sweep
Sweep
Generator Generator | Adjust Remarks
Coupling
Frequency ‫انس‬‎
—
IFT F101 | Adjust for maximum amplitude
at IFT F301 | and symmetrical "S" curve on
кам 10.7 MHz | MPX OUT jack | IFT F302 | the scope. (See Fig. 3-2)
(See Fig. 3-1) ШЕГЕ
Е IFT F304 | Ant. Switch: EXT. АМТ.
Fig. 3-1 Fm if alignment setup Fig.32 "S" curve on oscilloscope
'ext, ant terminal
TF oon)
2. AM IF ALIGNMENT
Preparation: Band selector: MW
'Tuning Capacitor: minimum capacitance position
Mie | mmm | уш | де ВЕ
Coupling Frequency |
gom | ЫЛ | SO | птш | лана Tor manen nawa
(See Fig. 3-3.)
am modulated)
jack
T
+
Fig. 33 Ат if alignment, MW/LW frequency coverage and tracking adjustment setup
dé