SONY ICFC723
Manual de Servicio

SECTION 3 ELECTRICAL ADJUSTMENTS
AM Section Band button : AM (ICF-C723) : MW or LW (ICF-C723L) Volume : MAX
AM RF signal generator Put the lead-wire antenna close to the set.

� Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. ( ) : AEP, UK, Italian, Australian, E model only
AM IF ALIGNMENT Adjust for a maximum reading on level meter. T1 455kHz AM <MW> FREQUENCY COVERAGE ADJUSTMENT Reading on digital Adjust parts Frequecy display voltmeter L6 530kHz (531kHz) 2.5 ± 0.1V (ICF-C723) 2.65 ± 0.1V (ICF-C723L) Less than 11.0V Standard 9.5V (Less than 10.0V) (Standard 9.0V)

30% amplitude modulation by 400Hz signal. Output level : as low as possible

FM Section Band button : FM Volume : MAX
FM RF signal generator 0.01µF set 22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible FM ANT IN

JW13

confirmation

1,710kHz (1,602kHz)

AM <MW> TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L3 :ICF-C723 580kHz (621kHz) L3�1 :ICF-C723L CT1 1,490kHz (1,404kHz)

ICF-C723L
level meter
LW FREQUENCY COVERAGE ADJUSTMENT Reading on digital Adjust parts Frequecy display voltmeter More than 2.2V confirmation 153kHz (Standard 3V) CT4 279kHz LW TRACKING ADJUSTMENT 9.0 ± 0.1V

8� set

speaker terminal
[MAIN BOARD] (Conductor side)

digital voltmeter

Adjust for a maximum reading on level meter. L3 � 2 162kHz CT2 243kHz

FM FREQUENCY COVERAGE ADJUSTMENT Reading on digital Adjust parts Frequecy display voltmeter L5 confirmation 87.5MHz 108.0MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L4 87.5MHz CT3 108MHz 3.0 ± 0.1V 10 ± 1V

Adjustment Location
C55

: Main board (See page 8)

6

5

4

3

2

1

W705 C15

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