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(MAIN
PCB)
TO J520
J540
+8
GND
VR CON
VR CON
Sch IN
Cch in
Reh IN
Lch IN
10u
C551
A
J556
c/S MUTE
1O
L/R MUTE
1O
POWER
AMP
PCB
IC390
R492
4.7k
R491
— 39—
R455
680k C452
470p
=
R355
680k C352
470p
R356
56k
MS218L
C371
1800p
100u/10v
R457
560
Cc
R470
330k
R458
56k
T 4A L 125V_ {| T 4A L 250V | 7 5A L 125V
F552
T 2.54
L 250V
PTS-303/505/707
PTS-303/505/707
PTS-307/507/707
PTS-307/507/707
D
SCHEMATIC DIAGRAMS (POWER AMP SECTION)
(MODELS: RY-505/507/707)
R463
56k
Q372
2SC1740SR
'Ss
R582
J 1SS133
22k
D371
2S8C4278E
=
q
a,
aS
ol2x4
x
Reg
38
3
Ss
q
Boo
ae
|
Nn
a?
CS
|
ba
0472
3.9k
'
2SC1740SR
Ports marked
with this sign safety critical components.
They must
always be replaced with id.
to the appropriats
parts list and
ensure
exoct
replasement.
FUSE LIST
i
|
RY-505
RY-507
RY-707UD
R386
56k
s o a OO
a e
al components-—refer
R462
RY-707UM
T 5A L 250V
10 1/2w
1.2k 22k 22k
R558 R389 R489
AC PCB
(UD)
CENTER
GND
REAR L
GND
REAR R
GND
SPEAKER
TERMINAL
2
FRONT
L
GND
FRONT
R
GND
SPEAKER
TERMINAL
3555
SUB WOOFER
OUT
AC PCB
(UM)
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