Sony STR-AV280L - Page 7

STR-AV280L
SECTION 3
ADJUSTMENTS
FM SECTION
FM TRACKING ADJUSTMENT
Setting:
FM rf signal
generator VTVM
arises
ANTENNA 752. REC OUT
terminals
Carrier frequency: 98MHz
Modulation: 400Hz, 40kHz deviation
(100%)
Output level: 3.2 —5.3uV (10 — 15dB)
1. Adjust L102, 104, 107 for maximum reading on
VTVM.
FM FREQUENCY COVERAGE ADJUSTMENT
Setting:
FM rf signal
generator VOM ®
|
ANTENNA 752. REC OUT
terminals
£106 Carrier frequency: 108MHz
Modulation: 400Hz, 40kHz deviation
(100%)
Output level: 1I1mV (60dB)
1. Adjust L106 so that VOM () reads 8.5V +2V.
2. After the adjustment, set FM rf signal generator
frequency to 87.5MHz.
Confirm that VOM @ reads 2.6V +0.5V.
VOM (2)
test point [ /]
test point [eo
om-_—_——0;
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