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 Adjustment
Band: AM or MW
Procedure:
1. Set the output of SSG so that the input level of the set be-
Adjustment Location:
comes 55 dB.
AEP, UK model : (EE, CIS models next page)
2. Tune the set to 1,050 kHz (US, CND models), 999 kHz (other
[TCB B OARD] (Component Side)
models).
3. Adjust RV41 (AEP, UK, EE, CIS models), RV42 (other mod-
IC41
els) to the point (moment) when the TUNED indicator willRV41
change from going off to going on.
Adjustment Location : TCB board
FM Section Adjustment
RV42
Note: This adjustment should be performed after the AM Tuned
TM1
Level Adjustment due to the same adjustment element.
Setting:
FM RF stereo signal
generator
FE1
75 1 coaxial
set
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kH, 75 kHzOther models
deviation (100%)FM ANTENNA terminal
(TM1) (75 1 open)[TCB BOARD] (Component Side)
IC2
RV42
FM Tuned Level Adjustment
Band: FM
RV41
Procedure:
1. Supply a 25dB? 98 MHz signal from the ANTENNA termi-
nal.
TM1
2. Tune the set to 98 MHz.
3. If the TUNED indicator does not light, adjust RV42 (AEP, UK,
EE, CIS models), RV41 (other models) to the point (moment)
when the TUNED indicator will change from going off to go-
FE1
ing on.
Adjustment Location: TCB board
Y Abbreviation
CND: Canadian model
EE:East European model
� 35 � |
ACEC
SONY
