SONY STRW55
Instrukcja Serwisowa

SECTION 3 ELECTRICAL ADJUSTMENTS
Precautions in Repairing Note. 1 : The adjustment should be performed in the publication. (AM nFM) Note. 2 : As a front-end (FE1) is difficult to repair if faulty, replace it with new one. AM SECTION AM Tuned Indication Lighting Level Setting : Band :AM ( MW)
loop antenna B loop antenna A AM RF signal generator FE1
set

Adjustment Location :

[ TCB BOARD ] � Component side �

RV41 : AM Tuned Indication Lighting Level

Carrier frequency : 999kHz

Procedure : 1. Set loop antenna A so that the loop antenna B input level becomes 55dBµ/m (0.6mV/m). 2. Tune the set to 999kHz . 3. Adjust RV41 so that the TUNED indicator goes on. FM SECTION FM Tuned Indication Lighting Level Note : Always make the tuning level adjustment first. (Since it affects the FM tuning level.) Setting : Band : FM
FM RF stereo signal generator FM ANTENNA terminal 75 � coaxial

RV42 : FM Tuned Indication Lighting Level

set
Carrier frequency : 98MHz Modulation : OFF Output level :0.018mV (25dBµ)

Procedure : 1. Tune the set to 98MHz. 2. Adjust RV42 so that the TUNED indicator goes on. Adjustment Location : TCB board

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