CDX-3183 - Sony Car Audio Service Manual (repair manual). Page 16

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D-BASS switch : OFF
SOURCE button : FMI

Carrier frequency : 98.00 MHz
Output level

: 70 dB (3.2 mV)

Mode

: stereo

Modulation

: main : 1 kHz, 20 kHz deviation (26.5%)

sub : 1 kHz, 20 kHz deviation (26.5%)
19 kHz pilot : 7.5 kHz deviation (10%)

L-CH

L-CH

A

B

R-CH

L-CH

Adjust RV4 on TU01 for
minimum reading.

R-CH

R-CH

C

D

L-CH

R-CH

Adjust RV4 on TU01 for
minimum reading.

L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.

Specification : Separation more than 28 dB

Adjustment Location : See page 17.

FM RF signal

generator

0.01 

µ

F

antenna
terminal

LINE OUT REAR

10 k 

Ω

level meter

set

D-BASS switch

: OFF

SOURCE 

n MODE button : MW

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

: 33 dB (44.7 

µ

V)

Procedure :
1. Set to the test mode. (See page 15.)
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 TU01 so that the “MW”

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

Display

AM RF signal

generator

AM dummy

antenna (50 

Ω

)

set

antenna
terminal

30 

Ω

65 pF

15 pF

Adjustment Location : See page 17.