Read Sony ST-SE570 Service Manual online
8
ST-SE570
SECTION 4
ELECTRICAL ADJUSTMENTS
FM Signal Level Adjustment
Procedure:
1. Tune the set to 98 MHz.
2. Push the DISPLAY button for digital signal meter indication.
3. Adjust RV201 to the place where level and “70dB
1. Tune the set to 98 MHz.
2. Push the DISPLAY button for digital signal meter indication.
3. Adjust RV201 to the place where level and “70dB
M” indica-
tion lights on fluorescent indicator tube.
Adjustment Location:
[MAIN BOARD] — Component Side —
FM RF signal
generator
generator
set
FM ANTENNA
75
75
Ω
coaxial
(TB101)
Carrier frequency : 98 MHz
Modulation
Modulation
: 1 kHz, 40 kHz deviation
Output level
: 6.3 mV (76dB
µ
)
(75
Ω
open)
IC201
CN101
RV201
FM SIGNAL LEVEL
Adjustment
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