XR-C8220 - Sony Car Audio Service Manual (repair manual). Page 17

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[SOURCE]

 

n 

[MODE]

 buttons

: AM

FREQUENCY SELECT switch (E model): AM 10 k

Procedure:
1. Set to the test mode. (See page 14)
2. Push the 

[SOURCE]

 button and set to FM.

3. Push the 

[MODE]

 button and set to AM.

Display

4. Push the preset 

[3]

 button.

Display

5. Adjust with the volume RV1 on TUX10 so that the “AM” in-

dication turns to “AM0” indication on the display window. But,
in case of already indicated “AM0”, turn the RV1 so that put
out light “0” indication and adjustment.

Display

Adjustment Location: See page 18.

AM RF signal

generator

Carrier frequency : 1000 kHz
30% amplitude
modulation by
1 kHz signal
Output level

: 33 dB (44.7 

µ

V)

(50 

Ω

)

set

AM dummy antenna

30 

Ω

15 pF

65 pF

antenna jack 

SHUF

SHUF

SHUF