Power Amp R Assy - Pioneer VSX-LX70 Service Manual

1

10.25 POWER AMP R ASSY

NOTES
A 1.RESISTORS
Unit: k-kΩ, M-MΩ or Ω unless otherwise noted.
Rated power: 1/16W unless otherwise noted.
Tolerance: ±5%(J) unless otherwise noted.
F:±1% D:±0.5%
RN:Fixed Metal Film
2.CAPACITORS
No marked Capacitors are CEAT or CKSRYB. CH:CCSRCH
Unit: p-pF or μF unless otherwise noted.
Rated Voltage: shown as "Capacity(μF)/Voltage(V)",
or 50V unless otherwise noted.
3.DIODES
No marked Diodes are 1SS355.
* Parts or parts block marked by "STBY" are standby.
PTFM04BH222Q2N34B0
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
C
XKP3076
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
D
XKP3077
KN5361
KN5362
CHASSIS
E
7
AGC
6
b
5
bb
4
CB
3
CE
2
CE
1
CE
CN5303
KM250NA7L
F
R
152
1
2
The > mark found on some component parts should be
replaced with same parts (safety regulation
authorized) of identical designation.
(60°C)
POSI_1
TH5301
STBY
(C)
(C)
(C)
: AUDIO SIGNAL ROUTE(C)
2
3
R
CP CP
R5301 C5301 R5302
1k 4.7/50 220
R5304
Q5301
2SD2704K
10k
SR
CP CP
R5401 C5401 R5402
1k 4.7/50 220
R5404
Q5401
2SD2704K
10k
SBR
CP CP
R5501 C5501 R5502
1k 4.7/50 220
R5504
Q5501
2SD2704K
10k
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.)
VSX-LX70
3
4
D5302-D5304 : 1SS355
Q5304
Q5303
2SA1514K(RS)
C5305 C5306
STBY STBY
Q5302
C5308 CH
Q5302
4p/200
IMT4
ACG7057
IMT4
Q5305
2SC2705(OY)
C5322
STBY
C5317 R5331 R5330
R5329
RN
330/10 150 1k 33k(1/10W)
D
D RN D
RN
C5316
C5315
C5327
CH 22p
D5402-D5404 : 1SS355
STBY
Q5404
Q5403
2SA1514K(RS)
C5405 C5406
STBY STBY
Q5402
C5408 CH
Q5402
4p/200
IMT4
ACG7057
IMT4
Q5405
2SC2705(OY)
C5422
STBY
C5417 R5431 R5430
R5429
330/10 150
1k D 33k(1/10W)
RN D
D
RN RN
C5416
C5415
C5427
CH 22p
D5502-D5504 : 1SS355
STBY
Q5504
Q5503
2SA1514K(RS)
C5505 C5506
STBY STBY
Q5502
C5508 CH
Q5502
4p/200
IMT4
ACG7057
IMT4
Q5505
2SC2705(OY)
C5522
STBY
C5517 R5531 R5530
R5529
330/10 150 1k 33k(1/10W)
D
RN D
D
RN RN
C5516
C5515
CH 22p
C5527 STBY
(C)
(C)
CP
4
CP
CP
CP
22p CH
CP
CP
22pCH
CP
22pCH
with