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STR-AV880
STR-AV88&O
S|
FM Stereo Separation Adjustment
Procedure:
Tune the set to 98 MHz.
FM AGC Adjustment
Setting:
FM IF switch:
WIDE
FM stereo
VTVM
VTVM
signal generator
'
Bee
heiakes
a
channel
connection
reading (dB)
Setting:
CIRCUIT
BOARDS
LOCATION
signal
i
j
generator
L-CH
L-CH
@®
FM rf stereo
signal
generator
VTVM
®)
R-CH
Adjust RT151 for
outlet board
minimum reading.
R-CH
1C-L board
AC SW board
display board
ANTENNA
REC
OUT
L-CH
FM ANT (75 9)
Adjust RT151 for
minimum reading.
ANTENNA
REC
OUT
L-CH Stereo separation:
@® _
FM ANT (75 Q)
R-CH Stereo separation:
©
- (©)
Carrier frequency:
98 MHz
.
Output passe
A
1 mV (60 aB)
Carrier frequency:
98 MHz
Modulation:
Output level:
100 mV
(80 dB}
2. Adjust RT141
so that the AGC voltage goes down.
distortion
meter
Cr] |
Se
eee)
ANTENNA
REC OUT
FM (75
id
75 kHz deviation
60 dB)
test point
generator
ANTENNA
FM
(75 Q)
'
FM Signal Level Adjustment
Sub channel 38 kHz:
33.75 kHz deviation (45%)
Pilot signal 19 kHz:
7.5 kHz deviation (10%)
Procedure:
1. Tune the set to 98 MHz.
2. Adjust RT101
so that the STEREO indicater goes
on,
le and secondary-side align-
Procedure:
1. Tune the set to 98 MHz.
2. Adjust
RT102
so that the signal level indicator is
70.
ramic filter, perform this align-
ANTENNA
REC
OUT
FM ANT (75 Q)
Ph ee
|
|
a6
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