Sony STR-S255 - Page 6

[R-S255 STR-S255__
a
OR
a Si
3.8
LA34013.2 4.8 2-8 0.2
DOOD D-O-O-O)
‘2222244
rasiz “8 | ores}
47k 3d 10 Tv
aso tL resol [ress +l | peo2
Tevex 270K = 270K 100K
1C451
FM MPX
FM MUTING
Soe PS
—_—_—T | AM MUTING!
LEVEL
coya
=
=
s
tS) L752
D> i751
, DAS!
@) siP-i90B-si
aS
| {GEQ@ BOARD }
{ LAMP BOARD }
case “OP Reso LPF451
330p SOV 4.7k
ian {
ee 5) pase Beso C461
Ct > SOV 4. 7k 0.001
c4g71* ;
S508
cere
C475,
4
00022 0. 0022|
R456 150k I)
R461 C462
4.7K 0.001 .
4
4
4
L-CH
GND (NC) 10
AMPLIFIER
bee BOARD
12V ®
PILOT LAMP
Note:
All capacitors are in uF unless otherwise noted. pF: uuF
S5OWV or less are not indicated except for electrolytics
and tantalums.
All resistors are in 2 and % W or less unless otherwise
specified.
f%d+ : nonflammable resistor.
fw-7} : fusible resistor.
> : signal path.
ames © B+ bus.
=ene - B— bus.
([__] |: adjustment for repair.
Voltages are dc with respect to ground unless otherwise
noted.
Readings are taken under no-signal (detuned) conditions
with a VOM (50 k9/V).
no mark:
( i
cm ae
Voltage variations may be noted due to normal produc-
tion tolerances.
Switch
POWER
PHONO
TUNER
cD
TAPE
VIDEO
SPEAKERS-A
SPEAKERS-B
MEMORY
OO ONOOHBRWN =
PRESET TUNING
FM/AM
Note: The components identified by shading and mark
A are critical for safety. Replace only with
part number specified.
FE151 FM FRONT END SCHEMATIC DIAGRAM
STR-S255