Power Amp L Assy - Pioneer VSX-LX70 Service Manual

1

10.24 POWER AMP L ASSY

CAUTION
Do not touch any points on the PCB other than
A
an oscilloscope/tester while power is applied.
(It may damage the amplifier due to the oscillation generated.)
NOTES
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.
B
PTFM04BH222Q2N34B0
CN5002
NC
1
NC
2
GNDU
3
POSI_1
4
POSI_2 5
DC DET
6
OL DET
7
WT 8
NC
9
NC
10
NC
C 11
XKP3076
CN5001
LS 13
AGLS
12
L
11
AGL 10
SBL 9
AGSBL
8
DC 7
OL DET
6
AMUTE
5
SBMUTE
4
VH- 3
VH-
2
VH+
1
D
XKP3077
KN5061
KN5063
CHASSIS
E
CN5003
KM250NA7L
GAMP
1
b
2
bb
3
CB 4
CE 5
CE 6
CE
7
F
Q
150
1
2
CP with
The mark found on some component parts should be
replaced with same parts (safety regulation
authorized) of identical designation.
(F)
(60°C) (100°C)
PTFM04BD222Q2N34B0
POSI_1 POSI_2
TH5001 TH5002
PRT_L
(SB)
STBY
(C)
2
3
L
CP CP
R5001 C5001 R5002
1k 4.7/50 220
Q5001
2SD2704K
R5004
10k
SL
CP CP
(S)
R5101 C5101 R5102
1k 4.7/50 220
Q5101
2SD2704K
R5104
10k
SBL
CP CP
R5201 C5201 R5202
1k 4.7/50 220
Q5201
2SD2704K
R5204
10k
VSX-LX70
3
4
D5002-D5004 : 1SS355
Q5004
Q5003
2SA1514K(RS)
C5005 C5006
STBY
STBY
Q5002
C5008 CH
Q5002
4p/200
IMT4
ACG7057
IMT4
Q5005
2SC2705(OY)
C5022
stby
C5017 R5031 R5030
R5029
330/10 150
1k 33k(1/10W)
D
D
RN RN RN D
C5015
C5027
CH 22p
D5102-D5104 : 1SS355
STBY
Q5104
Q5103
2SA1514K(RS)
C5105 C5106
STBY STBY
Q5102
C5108 CH
Q5102
4p/200
IMT4
ACG7057
IMT4
Q5105
2SC2705(OY)
C5122
STBY
C5117 R5131 R5130
R5129
330/10 150
1k D 33k(1/10W)
D
RN RN RN D
C5115
C5127
CH 22p
STBY D5202-D5204 : 1SS355
Q5204
Q5203
2SA1514K(RS)
C5205 C5206
STBY STBY
Q5202
C5208 CH
Q5202
4p/200
IMT4
ACG7057
IMT4
Q5205
2SC2705(OY)
C5222
STBY
C5217 R5231 R5230
R5229
330/10 150 1k D 33k(1/10W)
RN
D
RN RN D
C5215
C5227 STBY
CH 22p
4
CP
CP
C5016
CP
22p CH
CP
C5116
CP
22p CH
CP
C5216
22p CH
(C)