Sony XR-4880, Service Manual

Page: 15 / 35

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Auto Scan/Stop Level Adjustment
Make this adjustment after "FM Auto Scan/Stop Level Adjustment".
Setting:
[SOURCE]
and
[MODE]
button: MW
Procedure:
1. Set to the test mode. (See page 13.)
2. Push the
[SOURCE]
button and set to FM.
3. Push the
[MODE]
button and set to MW.
Display
4. Adjust with the volume RV1 on TU1 so that the “MW” indi-
cation turns to “MWI” indication on the display window.
But, in case of already indicated “MWI”, turn the RV1 so that
put out light “I” indication and adjustment.
Display
Adjustment Location: See page 16.
AM RF signal
generator
Carrier frequency : 999 kHz
30% amplitude
modulation by
1 kHz signal
Output level
: 33 dB (44.7
µ
V)
(50
Ω
)
set
AM dummy antenna
30
Ω
15 pF
65 pF
antenna jack (J1)
MW
INTRO
999
SHUF1
INTRO
999
SHUF1