Sharp GF-320A

CIRCU
IT ADJUSTMENT (TUNER SECTION
AM IF/RF ADJUSTMENT Ckcilloscope
Test AM
- .
SWITCH
POSITION
AM
SIGNAL
400 Hz, 30%. AM modulated
GENERATOR
TEST
FRE- DIAL
AD-
STEP STAGE
QUENCY POINTER JUST-
REMARKS
SETTING MENT
1 IF
455 kHz High
T3 Adjust for
frequency best “IF”
cu we.
2
510 kliz
Lowest L8
Band
frequency
Adjust for
- coverage
maximal
3 1,650
Highest
TC8 output.
kHz frequency
Repeat steps 2 and 3 until no further improvement can
Figure 6- 1 AM IF
455 kHz
A
Figure 6- 2 AM IF CURVE
Signal
Generator
Test
Loop
Bar Antenna
Figure 6-3 AM RF
Figure 6- 4 ADJUSTMENT POINTS
-6-