Power Amp R Assy - Pioneer VSX-84TXSi Service Manual

1

3.26 POWER AMP R ASSY

A
CAUTION
Do not touch any points on the PCB other than
an oscilloscope/tester while power is applied.
(It may damage the amplifier due to the oscillation generated.)
POSI_1
PTFM04BC
222Q2N34B0
B
CN5302
NC 11
NC
10
POSI_1
9
GNDU 8
POSI_2 7
POSI_2
6
DC DET 5
OL DET
4
WT
3
NC
2
NC 1
XKP3076
C
CN5301
RS
1
AGRS
2
R
3
AGR
4
SBR
5
AGSBR 6
WT
7
DC
8
AMUTE
9
SBMUTE
10
VH-
11
VH- 12
VH+
13
XKP3077
D
KN5361
KN5362
CHASSIS
E
7
AGC
6
b
5
bb
4
CB
3
CE
2
CE
1
CE
CN5303
KM250NA7L
F
R
76
1
2
TH5301
(110 )
STBY
(C)
(C)
2
3
CP with
R
CP CP
R5301 C5301 R5302
1k 4.7/50 220
Q5301
2SD2704K
R5304
10k
RS
CP CP
R5401 C5401 R5402
1k 4.7/50 220
Q5401
2SD2704K
R5404
10k
SBR
CP CP
R5501 C5501 R5502
1k 4.7/50 220
Q5501
2SD2704K
R5504
10k
(C)
: AUDIO SIGNAL ROUTE(C)
VSX-74TXVi
3
4
D5302-D5304 : 1SS355
Q5304
Q5303
2SA1514K(RS)
C5305 C5306
stby stby
Q5302
Q5302 C5308
4p/200V
IMT4
ACG7057
IMT4
Q5305
2SC2705(OY)
C5322
stby
C5317 R5331R5330
R5329
33k
330/10 150 1k
D
(1/10W)
D
C5315 C5316
C5327
22p
D5402-D5404 : 1SS355
STBY
Q5404
Q5403
2SA1514K(RS)
C5405 C5406
stby stby
Q5405
2SC2705(OY)
C5422
stby
C5417 R5431 R5430
R5429
33k
150 1k
D
(1/10W)
D
C5415 C5416
C5427
22p
D5502-D5504 : 1SS355
STBY
Q5504
Q5503
2SA1514K(RS)
C5505 C5506
stby stby
C5508
4p/200V
ACG7057
Q5505
2SC2705(OY)
C5522
stby
C5517 R5531 R5530
R5529
33k
330/10 150 1k
D
(1/10W)
D
C5515 C5516
C5527
22p
STBY
(C)
(C)
C
4
CP
D
CP
CP
22p
D
CP
CP
22p
D
CP
22p
R5622
100