ZS-X7 - Sony Audio Service Manual (repair manual). Page 13

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Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

CFT1

450kHz

AM  FREQUENCY COVERAGE  ADJUSTMENT

Adjust part

Frequency display

reading on digital

voltmeter.

 L4

  530kHz

Adjustment Value : 0.9V

Standard Value : 0.85 – 0.95V

 

Confirmation

  1,710kHz

 4.6 – 5.8V

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3

620kHz

CT3

1,400kHz

BAND button :  AM
Volume :  MIN

BAND button : FM
Volume :  MIN

Adjustment Location :  Tuner boar d (See pa ge 14)

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust part

Frequency display

reading on digital

voltmeter.

 

Confirmation

  87.5MHz

1.55 – 1.85V

 L2

  108MHz

Adjustment Value : 4.0V

Standard Value : 3.9 – 4.1V

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1

87.5MHz

CT1

108MHz

AM  RF signal
generator

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

Put the lead-wire
antenna close to 
the set.

FM RF signal
generator

22.5kHz frequency deviation by 
400Hz signal.
Output level : as low as possible

telescopic
antenna
terminal

0.01 

µ

F

set

16 

Ω

+
–

i

 jack (J501)

level meter

0 dB = 1

µ

V