CDX-C6850R - Sony Car Audio Service Manual (repair manual). Page 20

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AM RF signal
generator

antenna
terminal

AM dummy
antenna (50 

Ω

)

30 

Ω

65 pF

15 pF

set

FM RF signal
generator

antenna
terminal

0.01 

µ

F

set

SOURCE 

n MODE button : MW

Procedure :
1. Set to the test mode. (See page 18.)
2. Push the  SOURCE  button.
3. Push the  MODE  button and set to MW.

Display

4. Push the preset  3  button.

Display

5. Adjust with the volume RV1 on TU601 so that the “MW”

indication turns to “MW0” indication on the display window.
But, in case of already indicated “MW0”, turn the RV1 so that
put out light “0” indication and adjustment.

Display

Carrier frequency : 999 kHz
30% amplitude
modulation by
1 kHz signal
output level

: 33 dB (44.7 

µ

V)

Adjustment Location : See page 21.

Carrier frequency : 98.00 MHz
Output level

: 35 dB (56.2 

µ

V)

Mode

: mono

Modulation

: no modulation

Procedure :
1. Set to the test mode. (See page 18.)
2. Push the  SOURCE  button and set to FM.

Display

SOURCE button : FM

3. Push the preset  10  button.
4. Adjust RV801 so that the display indication is “13.0”.

Display

Specification : Display indication : 12.8 to 13.2.

Adjustment Location : See page 21.