Read Sony XR-1800RD Service Manual online
11
MW Auto Scan/Stop Level Adjustment
Setting:
[TUNER]
button: MW
Procedure:
1. Tune the set to 999 kHz
2. Connect the digital voltmeter to TP101 (SD) on MAIN board.
3. Adjust RV1 on TU100 so that the reading on the digital volt-
1. Tune the set to 999 kHz
2. Connect the digital voltmeter to TP101 (SD) on MAIN board.
3. Adjust RV1 on TU100 so that the reading on the digital volt-
meter changes point from low to high.
Adjustment Location: See page 12.
AM RF signal
generator
Carrier frequency : 999 kHz
30% amplitude
modulation by
1 kHz signal
Output level
30% amplitude
modulation by
1 kHz signal
Output level
: 33 dB (44.7
µ
V)
(50
Ω
)
set
AM dummy
antenna
antenna
30
Ω
15 pF
65 pF
antenna jack (CN900)
+
–
–
TP101 (SD)
MAIN board
digital
voltmeter
voltmeter
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