Sony XR-4758RDS, Руководство по обслуживанию

Страница: 14 / 34

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AM RF signal
generator
set
30
Ω
15 pF
65 pF
AM dummy antenna
(50
Ω
)
antenna jack (J1)
Carrier frequency : 999 kHz
30% amplitude
modukation by
1 kHz signal
Output level
: 33 dB (44.7 µV)
MW Auto Scan/Stop Level Adjustment
Setting:
SOURCE and MODE button: MW
Procedure:
1. Set to the test mode. (See page 12.)
2. Push the SOURCE button and set to FM.
3. Push the MODE button and set to MW.
Display
5. 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
4. Push the preset 3 button.
Display
Adjustment Location: See page 15.
FM Signal Meter Adjustment
Setting:
SOURCE button: FM
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)
Procedure:
1. Set to the test mode. (See page 12.)
2. Push the SOURCE button and set to FM.
Display
FM
INTRO
REG
3. Push the 6 button.
4. Adjust RV1 so that the display indication is “160”.
Display
INTRO
FM
Specification: Display indication: 158 to 162
Adjustment Location: See page 15.
999 @
MW
INTRO
3 999
MW
INTRO
3 999
INTRO