— 7 —
• Repeat the procedures in each adjustment several times.
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
76.0MHz
CT1
108.0MHz
FM VCO Adjustment
Procedure :
1. Connect frequency counter to the positions shown below.
2. Tune the set to 98 MHz.
3. Adjust RV1 so that the value of the frequency counter reading
becomes 19 kHz.
Specification Value :
Frequency counter
18,500 – 19,500 Hz
0dB=1µV
Adjustment Location:
MAIN board
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
10.7MHz
SECTION 3
ELECTRICAL ADJUSTMENT
0.01
µ
F
FM RF signal
generator
to ANT (TP6)
75kHz (100%) amplitude modulation
by 1kHz signal.
Output level : as low as possible
16
Ω
Set
+
–
Level meter
Speaker terminal (SP+/SP–)
0.01
µ
F
FM RF signal
generator
to ANT (TP6)
Carrier frequency : 98MHz
Modulation : no modulation
Output level : 0.1V (100dB)
Frequency counter
1
µ
F
+
–
100k
Ω
IC2 Pin
qs
IC2 Pin
9
— Side A —
— Side B —
RV1
FM VCO adjustment
T1
FM IF freg. adjustment
CT1
FM tracking
adjustment
L1
FM tracking
adjustment
12
1
IC2
13
24
TP6 (ANT)
SP (+)
SP (–)
