Read Sony ST-S3000ES Service Manual online
— 6 —
AM SECTION
AM Meter Level Adjustment
Setting :
BAND : LW
BAND : LW
loop antenna
AM RF SSG
AM antenna
terminal (TM1)
terminal (TM1)
loop antenna
(Supplied accessories)
(Supplied accessories)
Field strength dB (µV/m) = SSG output level dB (µV/m) –26dB.
30% amplitude
modulation by
400Hz signal
modulation by
400Hz signal
Carrier frequency: 216kHz
Modulation: AUDIO 400Hz, 30% modulation
Modulation: AUDIO 400Hz, 30% modulation
Procedure :
1. Set AM RF signal generator so that the AM antenna input level
1. Set AM RF signal generator so that the AM antenna input level
becomes 74dBµ/m.
2. Adjust RV402 so that 1 to 10 indication bars light up on the signal
meter.
Adjustment Location
[MAIN BOARD] — Component Side —
60cm
set
FE101
RV402
AM Meter Level
AM Meter Level
RV301
Stereo
Separation
Stereo
Separation
RV231
Narrow
Gain
Narrow
Gain
RV251
S t e r e o
Level
S t e r e o
Level
IFT253
(THD)
(THD)
IFT252
(NULL)
(NULL)
CNP701
IFT252, 253
FM Discriminator
FM Discriminator
RV221
FM Meter Level
FM Meter Level
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