Pioneer VSX-418-K Service Manual page 41

5
TO MAIN ASSY
( TO MAIN ASSY 3/3 ) A 3/3
(SBL)
(SB)
(C)
(SL)
(FL)
(SR)
(FR)
R433
C
68K
R431
FL
R444
100K
R432
FR
100K
100K
R435 R434
SL
68K 39K
IC251
R436
NJM4565MD
SR
-
(1/2)
R430
68K
-
100K
+
IC251
+
NJM4565MD
(2/2)
V+5U
V-12
GNDU
5
6
AMUTE
F-DRIVE
DCDT
XPROTECT
OLDT
A 3/3
6_OHM
C392
1000p
C255
STBY
NP
2SC4081
Q254
RT1P241M
Q252
2SD1858X
Q259
(QR)
R443
R464
Q255
*5
470
*5
R463 *5
MYSXJ5
*5
(FL)
D253
UDZS27(B) (SL)
D255 -
(C)
0
R280
Q255 RT1N241M
(SBL)
-
R463
(SW)
R464 0
6
7
(C)
(SL)
(FL)
YB
GNDU
C320
STBY
GNDCH
GNDA
R551
Q257
Q253 2SA1576A
8.2K
RT1N241M
(QR)
R449
8.2k
D254
UDZS5R1(B)
Q250
2SC4081
(QR)
Q248
(QR)
Q249
RT1N241M
R447
4.7K
Q256
2SD2704K
FAN CONTROL
: Audio Signal Route (Front L ch)
: Audio Signal Route (Surround L ch)
: Audio Signal Route (Center ch)
: Audio Signal Route (Surround Back L ch)
: Audio Signal Route (SubWoofer ch)
VSX-418-K
7
8
MAIN ASSY
A
2/3
(XWK3356)
SBR
SBL
17 C
GNDA
16
SL
15
GNDA
14
FL
13
GNDA
12
SR
11
GNDA
10
C 1/2
FR
9
8 AMUTE
CN704
7 F-DRIVE
DCDT
6
5 XPROTECT
OLDT
4
3 6 OHM
2 NECK
1
GNDU
CN110
XKP3059
CN252
B3B-EH
FAN+
FAN
FAN-
FAN STOP
CN251
52147-0310
GNDU
G
GNDU
+24V 891
J22
XDX3064
NOTE
1.RESISTORS
Unit: k-kΩ, M-MΩ or Ω unless otherwise noted.
Rated power: 1/16W unless otherwise noted.
+ -
Tolerance: (J) 5% unless otherwise noted.
2.CAPACITORS
Unit: p-pF or μF unless otherwise noted.
Ratings: Capacity(μF)/Voltage(V) unless otherwise noted.
Rated Voltage: 50V expect for electrolytic capacitors.
JA:CEJA
: AUDIO SIGNAL FLOW
MAIN ASSY(2/3)
8
A
B
C
D
E
F
A 2/3
41