XR-C553SP - Sony Car Audio Service Manual (repair manual). Page 18

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When the tuner unit is defective, replace it by a new one because
its internal block is difficult to repair.

[Note]
Adjust the tuner section in the sequence shown below.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. AM (MW) Auto Scan/Stop Level Adjustment
4. FM POLAR Adjustment

SOURCE button

: FM

µ

µ

Procedure:
1. Set to the test mode. (See page 17).
2. Push the SOURCE button and set to FM.

Display

FM

SHUF1

3. Push the preset 3 button.

Display

4. Adjust with the volume RV2 on TU1 so that the “FM” indica-

tion turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that
put  out light “0” indication and adjustment.

Display

FM

SHUF1

SHUF1

Adjustment Location: See page 21.

Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV121 (L-CH) and RV221 (R-CH) so that the level meter

reading is –6±1 dB (0.35 to 0.43 V).

Adjustment Location: See page 21.

Preset  3  (PLAY MODE) button: NR OFF
SEL (BAS) button

: Center

SEL (TRE) button

: Center

SEL (BAL) button

: Center

SEL (FAD) button

: Center

SEL (VOL) button

: Maximum

D-BASS control

: OFF

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