Sony XR-5790R, Service Manual

Page: 16 / 41

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AM (MW) Auto Scan/Stop Level Adjustment
Make this adjustment after “FM Auto Scan/Stop Level Adjust-
ment”.
Setting:
[SOURCE]
button: MW
Procedure:
1. Set to the test mode. (See page 14.)
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 “MW0” indication on the display window.
But, in case of already indicated “MW0”, turn the RV1 so that
put out light “0” indication and adjustment.
Display
FM Signal Meter Adjustment
Setting:
[SOURCE]
button: FM
Procedure:
1. Set to the test mode. (See page 14.)
2. Push the
[SOURCE]
button and set to FM.
Display
3. Push the
[6]
button.
4. Adjust RV1 so that the display indication is “160”.
Display
Specification: Display indication: 158 to 162
Adjustment Location: See page 17.
Adjustment Location: See page 17.
FM RF signal
generator
Carrier frequency : 98.00 MHz
Output level
: 35 dB (56.2
µ
V)
Mode : mono
Modulation : no modulation
0.01
µ
F
set
antenna jack (J1)
INTRO
FM
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)
999 @
MW
INTRO
999
INTRO
FM
INTRO
REG