XR-4750RDS, XR-C450RDS - Sony Car Audio Service Manual (repair manual). Page 17

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Make this adjustment after “FM Auto Scan/Stop Level Adjustment”.
Setting:

SOURCE button: MW

AM RF signal

generator

Carrier frequency : 999 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 (J1)

Procedure:
1. Set to the test mode. (See page 15.)
2. Push the SOURCE button and set to MW.

Display

3. Push the preset 3 button.

Display

3  999 

MW

INTRO

4. Adjust with the volume RV1 on TU1 so that the “MW” indica-

tion 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

Adjustment Location: See page 18.

SOURCE button: FM

FM RF signal

generator

Carrier frequency : 98.00 MHz
Output level

: 35 dB (56.2 

µ

V)

Mode

: mono

Modulation

: no modulation

0.01 

µ

F

set

antenna jack (J1)

Procedure:
1. Set to the test mode. (See page 15.)
2. Push the SOURCE button and set to FM.

Display

FM

INTRO

REG

3. Push the 6 button.
4. Adjust RV1 so that the display indication is “160”.

Display

999 @

MW

INTRO

3  999 

INTRO

INTRO

FM

Specification: Display indication: 158 to 162

Adjustment Location: See page 18.