Fm Signal Meter Adjustment; Am (Mw) Auto Scan/Stop Level Adjustment - Sony XR-C5080R Service Manual

FM Signal Meter Adjustment

Setting:
[SOURCE]
button: FM
FM RF signal
generator
0.01 µ F
Carrier frequency : 98.00 MHz
: 35 dB (56.2 µ V)
Output level
Mode : mono
Modulation : no modulation
Procedure:
1. Set to the test mode. (See page 14.)
[SOURCE]
2. Push the button and set to FM.
Display
REG
FM
[6]
3. Push the button.
4. Adjust RV1 so that the display indication is "160".
Display
FM
Specification: Display indication: 158 to 162
Adjustment Location: See page 17.
antenna jack (J1)
set
INTRO
INTRO

AM (MW) Auto Scan/Stop Level Adjustment

Make this adjustment after "FM Auto Scan/Stop Level Adjust-
ment".
Setting:
[SOURCE]
button: MW
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 14.)
[SOURCE]
2. Push the
[MODE]
3. Push the
MW
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.
Adjustment Location: See page 17.
– 16 –
30 Ω 15 pF
65 pF
set
antenna jack (J1)
button and set to FM.
button and set to MW.
Display
INTRO
999 @
Display
INTRO
999