Sony XR-4900 Service Manual page 16

Fm/mw/sw cassette car stereo
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MW Auto Scan/Stop Level Adjustment
Make this adjustment after "FM Auto Scan/Stop Level Adjustment".
Setting:
[SOURCE]
button: MW
FREQUENCY SELECT switch: MW10 k
AM RF signal
generator
AM dummy antenna
(50 Ω )
Carrier frequency
: 1000 kHz
30% amplitude
modulation by
1 kHz signal
: 33 dB (44.7 µ V)
Output level
Procedure:
1. Set to the test mode. (See page 14.)
[SOURCE]
2. Push the
button and set to FM.
[MODE]
3. Push the
button and set to MW.
Display
MW
TE
L 13942296513
4. Adjust with the volume RV1 on TU1 so that the "MW" indica-
tion turns to "MW " indication on the display window.
But, in case of already indicated "MW ", turn the RV1 so that
put out light " " indication and adjustment.
Display
Adjustment Location: See page 17.
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.
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30 Ω 15 pF
65 pF
set
antenna jack (J1)
1000
SHUF
1000
SHUF
x
ao
y
i
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