TUNER SECTION0dB=1?V
Note:As a front-end (FE1) is difficult to repair if faulty, replace it
with new one.
AM Section Adjustment
Setting:
loop antenna
loop antenna(Supplied accessories)
AM RF SSG
set
30% amplitude
modulation by
400 Hz signal60 cmAM ANTENNA
terminal (TM1)
Field strength dB (?V/m) =SSG output level dB (?V/m) �26 dB.
AM Tuned Level AdjustmentAdjustment Location:
Band: AM or MWAEP, UK model
Procedure:[TCB BOARD] (Component Side)
1. Set the output of SSG so that the input level of the set becomes
55 dB.IC41
RV41
2. Tune the set to 1,050 kHz (US, CND models), 999 kHz (other
models).
3. Adjust RV41 (AEP, UK models), RV42 (other models) to the
point (moment) when the TUNED indicator will change from
going off to going on.
RV42
Adjustment Location : TCB boardTM1
FM Section Adjustment
Note: This adjustment should be performed after the AM Tuned
FE1
Level Adjustment due to the same adjustment element.
Setting:
FM RF stereo signalOther model
generator
[TCB BOARD] (Component Side)
75 1 coaxial
IC2
RV42
set
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kH, 75 kHz
deviation (100%)FM ANTENNA terminalRV41
(TM1) (75 1 open)
TM1
FM Tuned Level Adjustment
Band: FM
Procedure:
1. Supply a 25dB? 98 MHz signal from the ANTENNA terminal.FE1
2. Tune the set to 98 MHz.
3. If the TUNED indicator does not light, adjust RV42 (AEP, UK
models), RV41 (other models) to the point (moment) when the
TUNED indicator will change from going off to gYoing on.Abbreviation
Adjustment Location: TCB boardCND: Canadian model
� 35 � |
ACEC
SONY
