Sony STR-AV280L - Page 15

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Note on schematic diagram:
e All capacitors are in uF unless otherwise noted. pF: uwuF
S5OWV or less are not indicated except for electrolytics
and tantalums.
All resistors are in Q and 1/,W or less unless otherwise
specified.
A : internal component.
+f}: nonflammable resistor.
: B+ bus.
o——=— > B- bus.
[_] : adjustment for repair.
Voltages are dc with respect to ground unless otherwise
noted.
@ Readings are taken under no-signal (detuned) conditions
with VOM (50 kQ/V).
no mark: FM
( ): MW
< >: LW
e@ Voltage variations may be noted due to normal produc-
tion tolerances.
° 2 : signal path.
e Switches
Switch Position
SPEAKER A/B A
TAPE OFF
+ OFF
- OFF
PHONO OFF
FM MODE OFF
MEMORY PRESET OFF
MEMORY SCAN OFF
) OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
CD/AUX OFF
FM OFF
1 OFF
2 OFF
3 OFF
TUNER OFF
LUDNESS OFF
POWER OFF
Note: The components identified by shading and mark
are critical for safety. Replace only with
part number specified.