Read Sony ICF-C470 / ICF-C470L Service Manual online
– 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
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