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SECTION 5 ELECTRICAL ADJUSTMENTS
0 dB = 1 µV
[AM (MW/LW)*] * AM : ICF-C470 MW/LW : ICF-C470L Setting: Band switch: AM (MW/LW)
AM RF signal generator Put the lead-wire antenna close to the set. MAIN board TP (SPK +) level meter 8� set + �
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 CT1-3 520 kHz 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
30% amplitude MAIN board TP (SPK �) modulation by 400 Hz signal Output level: as low as possible
LW FREQUENCY COVERAGE ADJUSTMENT *2 Adjust for a maximum reading on level meter CT6 145 kHz
[FM] Setting: Band switch: FM
FM RF signal generator 0.01 µF set 22.5 kHz frequency deviation by 400 Hz signal Output level: as low as possible MAIN board TP (FM ANT) MAIN board TP (SPK +) level meter 8� + � MAIN board TP (SPK �)
LW TRACKING ADJUSTMENT *2 Adjust for a maximum reading on level meter L1-2 CT5 160 kHz 240 kHz
FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L2 86.5 MHz CT1-1 109.5 MHz
� Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. � Remove FM antenna in FM adjustments. Adjustment Location: Main Board (See page 8)
FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter CT1-2 109.5 MHz *1) Except US, Canadian models *2) ICF-C470L
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