Sony ICF-C470 / ICF-C470L Service Manual ▷ View online
– 5 –
SECTION 3
DIAL POINTER SETTING
5
Install the MAIN board.
4
Turn VR1 to the
arrow
arrow
D
direction fully.
3
Turn shaft of CV1 to the
arrow
C
direction fully.
– BOTTOM VIEW –
2
Turn the knob (VOL) to the
arrow
B
direction fully.
1
Turn the knob (tuning) to the
arrow
A
direction fully.
dial pointer
A
B
C
D
Note:
Follow the assembly procedure in the numerical order given.
– 6 –
SECTION 4
POWER CORD SETTING
lower cabinet
power cord
FM antenna
Set the power cord as illustrated below,
then install the lower cabinet.
then install the lower cabinet.
– 7 –
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
AM (MW
*
2) FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4
520 kHz
CT1-3
1,750 kHz (1,650 kHz *1)
AM (MW
*
2) TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 (L1-1 *2)
600 kHz
CT1-4
1,400 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
*
2
Adjust for a maximum reading on level meter
CT6
145 kHz
LW TRACKING ADJUSTMENT
*
2
Adjust for a maximum reading on level meter
L1-2
160 kHz
CT5
240 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L2
86.5 MHz
CT1-1
109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
CT1-2
109.5 MHz
*1) Except US, Canadian models
*2) ICF-C470L
*2) ICF-C470L
SECTION 5
ELECTRICAL ADJUSTMENTS
0 dB = 1 µV
[AM (MW/LW)
*
]
* AM
: ICF-C470
MW/LW : ICF-C470L
Setting:
Band switch: AM (MW/LW)
Band switch: AM (MW/LW)
[FM]
Setting:
Band switch: FM
Band switch: FM
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
• Remove FM antenna in FM adjustments.
Adjustment Location: Main Board (See page 8)
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
8
Ω
MAIN board TP (SPK –)
MAIN board
TP (SPK +)
TP (SPK +)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
deviation by 400 Hz
signal
Output level: as low as possible
+
–
–
level meter
MAIN board TP (SPK –)
MAIN board
TP (SPK +)
TP (SPK +)
set
MAIN board
TP (FM ANT)
TP (FM ANT)
8
Ω
0.01
µ
F
– 8 –
Adjustment Location:
*) ICF-C470L
CT1-2
FM Tracking Adjustment
FM Tracking Adjustment
FM Frequency
Coverage Adjustment
Coverage Adjustment
L2
CT1-1
CT1-4
AM (MW
AM (MW
*
) Tracking Adjustment
AM (MW
*
) Frequency
Coverage Adjustment
CT1-3
L4
CT6
LW Frequency Coverage Adjustment
LW Frequency Coverage Adjustment
*
L1-2
CT5
LW
Tracking Adjustment
Tracking Adjustment
*
L1 (L1-1
*
)
AM (MW
*
) Tracking Adjustment
T1
AM IF Adjustment
AM IF Adjustment
– MAIN BOARD (Component Side) –
– MAIN BOARD (Conductor Side) –
TP
(SPK +)
TP
(SPK –)
TP
(FM ANT)
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