– 10 –
TUNER SECTION
0 dB=1 µV
[FM]
Setting:
FUNCTION switch : RADIO
BAND switch : FM
[MW]
Setting:
FUNCTION switch : RADIO
BAND switch : MW
[SW]
Setting:
FUNCTION switch : RADIO
BAND switch : SW1/SW2
FINE TUNING knob ...................................... mechanical center
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
): Saudi Arabia model
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 (L21)
86.5 MHz (87.35 MHz)
CT2
109.5 MHz (107.8 MHz)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
86.5 MHz (87.35 MHz)
CT1
109.5 MHz (107.8 MHz)
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520 kHz (516 kHz)
CT4
1,680 kHz (1,630 kHz)
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
600 kHz
CT3
1,400 kHz
SW1 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
2.2 MHz
CT6
7.3 MHz
SW1 TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
2.2 MHz
CT5
7.3 MHz
SW2 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L8
6.8 MHz
CT8
22.5 MHz
SW2 TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L7
6.8 MHz
CT7
22.5 MHz
FM VCO Adjustment
Setting:
Procedure:
1. Connect the frequency counter to pin
4
and
7
of IC1 as shown
the figure below.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz reading on the frequency counter.
Specifications: 75.95 kHz to 76.05 kHz.
Adjustment Location: TUNER board (See page 11)
Put the lead-wire
antenna close to
the set.
AM RF SSG
30% amplitude modulation by
400 Hz signal
output level: as low as possible
FM RF SSG
0.01
µ
F
TUNER board
CNP1
22.5 kHz frequency deviation
by 400 Hz signal.
output level: as low as possible
AM RF SSG
12 pF
30% amplitude modulation by
400 Hz signal
output level: as low as possible
TUNER board
CNP1
+
–
set
32
Ω
level meter
0.001
µ
F
FM RF SSG
Carrier frequency : 98 MHz
Modulation
: no modultion
Output level
: 0.1 V (100 dB)
TUNER board
CNP1
+
–
TUNER board
IC1 pin
4
+
IC1 pin
7
1
µ
F
33 k
Ω
frequency counter
Adjust for a maximum reading on level meter.
10.7 MHz
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