Sony XR-4790 Service Manual page 15

AM (MW) Auto Scan/Stop Level Adjustment
Make this adjustment after "FM Auto Scan/Stop Level Adjustment".
Setting:
[SOURCE] [MODE]
and
AM RF signal
generator
AM dummy antenna
(50 Ω )
Carrier frequency : 999 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 13.)
[SOURCE]
2. Push the button and set to FM.
[MODE]
3. Push the button and set to MW.
Display
INTRO MW
SHUF1
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
INTRO
SHUF1
Adjustment Location: See page 16.
button: MW
30 Ω 15 pF
65 pF
set
antenna jack (J1)
999
999
– 15 –