Sharp GF-A2Z(S) User Manual

FM IF/RF ADJUSTMENT
SWITCH POSITION
SIGNAL GENERATOR
STEf
,
TEST
STAGE
I
FRE-
QUENCY
1
2
3
F
4
5
6
7
8
10.7 MHz
T2 counter-
clockwise
IF
Tl
before taking
it out of the
bobbin.
2. Adjust for
best “IF”
High
CUNB.
frequency
Detection
T2 Adjust for best
“S” curve.
fepeat steps 1 and 2 until no further improvement can be made,
87.1 MHz Lowest 13
Band
frequency
coverage
109 MHz Highest
TC2
frequency
Adjust for maximal
output.
88 MHz
88MHz L2
Tracking
108 MHz
108 MHz TCl
Repeat steps 4, 5 and 6, 7 until no further improvement can
be made.
FM mono
1 400 Hz, 30%. FM modulated
DIAL
POINTER A,$;y-
REMARKS
SETTING
I I
I. Using a minus
driver, turn
the core of
VCO FREQUENCY ADJUSTMENT
SIGNAL GENERATOR
400 Hz. 30%. FM modulated
I
(mono signal)
DIAL
FREQUENCY
POINTER
ADJUST-
REMARKS
SETTING
MENT
FM mono position
FM stereo position
(unmodulated)
98 MHz at 54 dB 98 MHz VRI
Adjust for 38.00 kHz
f 1OOH.z.
Sweep
(TP2) (TP5)
Figure 7-l FM IF
later
si
c-:---a
(See
Figure 7-4)
generator
(TP2)
Figure 7-2 FM RF
“inns1
(See Figure 7-4)
(TP4)
Figure 7-3 VCO FREQUENCY
Rl = 37.5 ohms
..v - I ” I r I
L = ‘3 onms-==CR2 = 75 ohms
To chassis
Rl = 500hms
ground (TP2)
2 = 50 ohms<R2 = 5. ohms
2 : Output impedance of signal generator
Figure 7-4 FM DUMMY
AC POWER SUPPLY CORD
QACCZ0059AFOO
QACCL00155AFOO
QACCZ0060AFOO
7
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Sharp GF-A2Z(S) Specifications

General

Brand	Sharp
Model	GF-A2Z(S)
Category	Stereo System
Language	English