Sony Dream Machine ICF-C160, Руководство по обслуживанию, Страница: 5 / 12

– 5 –
Note: Follow the assembly procedure in the numerical order given.
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
( ): Italian model
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 CT4
86.5 MHz (87.35 MHz) 109.5 Hz (108.25 MHz)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
CT3
Frequency max
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 CT2
520 kHz (516.5 kHz) 1,650 kHz (1631.5 kHz)
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
600 kHz 1,400 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
Clock Frequency Check
Confirm that the reading on the frequency counter is 4800 ± 400 Hz.
If frequency is higher, change capacitor value of C27.
If frequency is lower, change resistor value of R8.
• Adjusting Location: RADIO board (Component Side)
T1: AM IF
ADJUSTMENT
CT1: AM TRACKING
ADJUSTMENT
CT4: FM FREQUENCY
COVERAGE
ADJUSTMENT
L2: AM FREQUENCY
COVERAGE
ADJUSTMENT
L1: AM TRACKING
ADJUSTMENT
CT3: FM TRACKING
ADJUSTMENT
L4: FM FREQUENCY
COVERAGE
ADJUSTMENT
CT2: AM FREQUENCY
COVERAGE
ADJUSTMENT
SECTION 4
DIAL POINTER SETTING
SECTION 5
ELECTRICAL ADJUSTMENTS
3
Install the knob (TUNE) with
board shape position as shown
in Figure.
4
Install the knob (VOL)
with making position as
shown in Figure.
5
Turn CV1 and RV1 shaft in
the arrow direction fully.
6
radio board
board shape
pointer
claw
A
knob (tune)
CV1
RV1
1
pointer
main board
(Component side)
– 6 –
2
Set the pointer part
A
portion to claw of chassis.
[FM]
Setting:
BAND switch: FM
[AM]
Setting:
BAND switch: AM
IC1
+
–
0.01 µF
+
–
AM RF SSG
30% amplitude
modulation by
400 Hz signal
Outlet level: as low as possible
set
speaker terminal
level meter
Put the lead-wire
antenna close to
the set.
± 22.5 kHz frequency
deviation by 400 Hz
signal
FM RF SSG
set
speaker terminal
level meter
FM lead wire antenna terminal
+
–
frequency counter
IC2 pin
!ª
10 pF