Pioneer SC-LX81 Service Manual page 139

5
MOS FET Driver
R4445
D4403 10k
2125
1%
RF051VA2S
Q4402
2SC5738
D4407
R4448
3216
RF051VA2S
ACN7165-A
IC4401
ICC3-AVR D4401
!
DRIVER
RB161VA-20
1 16
Isense1_H
Vboot
2 15
Isense2_H Q4403
2SA2061
HighDrive
3 14
NC1
HighReturn
D4405 R4450
4 13
NC2
Isense1_L
D4406 10k
5 12
PWM+
Isense2_L
RF051VA2S
6 11 RF051VA2S
PWM-
Vdrive
7 SS_EN 10
Q4404
2SC5738
LowDrive
8 Blanking 9
VS
R4449
3216
ACN7165-A
R4447
ACN7165-A
D4402
3216
RB161VA-20
4.7u
L4404
ATL7020-A
Q4405
VSS+10V 2SA2061
R4345
D4303
10k
2125
1%
RF051VA2S
Q4302
2SC5738
D4307
R4348
1/4W
3216
RF051VA2S
ACN7165-A
IC4301
D4301
ICC3-AVR
!
DRIVER
RB161VA-20
1 16
Isense1_H
Vboot
2 15
Q4303
Isense2_H
2SA2061
HighDrive
3 14
NC1
HighReturn
D4305 R4350
4 13
NC2
Isense1_L
D4306 10k
5 12
RF051VA2S
PWM+
Isense2_L
6 11 RF051VA2S
PWM-
Vdrive
7 10
SS_EN Q4304
2SC5738
LowDrive
8 9
Blanking
VS
R4349
1/4W
3216
R4347
ACN7165-A
ACN7165-A
D4302
3216
RB161VA-20
4.7u
L4304
ATL7020-A
VSS+10V Q4305
2SA2061
VD3
V+5V
R4475
Q4410
R4466 R4467
2SA1514K(RS) 10
R4470
10k 1% 1k 1%
1k
VD4
GND GND
GND
IC4404
NJM12904V
Q4310
R4366 R4367
6
2SA1514K(RS)
R4370
10k 1% 1k 1%
1k 5
GND
GND
5
6
Output Power Stage and LP Filter
VD3
!
D
G
S
PWM3
GND VD
2125
1%
L4400
!
ATL7017-A
15u
D
G
VS
S
R4455
ZOBEL3
2125
1%
15k
GND GND
VS3
RYS
VD4
Q 1/5
!
D
G
S
PWM4
VD
GND
2125
1%
L4300
!
ATL7017-A
15u
D
G
VS
S
R4355
ZOBEL4
2125
1%
15k
GND
GND
VS4
IC4404
Q4411
NJM12904V
2SA1602A(EF)
2
8 GND
1
TEMP_OUT
4
3
Q 1/5, 2/5, 4/5, 5/5
Q4311
2SA1602A(EF)
GND
7
SC-LX81
6
7
ICEPOWER AMP ASSY
Q 3/5
(AWH7017)
GND
L4401
ATL7022-A
4 3
12u
1 2
GND
GND
GND
V+12RY
RY4300
ASR7001-A
Q4312
RT1N140M
V-12RY
GND
L4301
ATL7022-A
(SL) 4 3
12u
1 2
GND
GND
GND
(SL)
: Audio Signal Route (Surround L ch)
7
8
KN4200
1 3
2 4
VNE1948-A
GND
GND
SPEAKER TERMINAL
1
SR+
2
5 SR-
(SL)
3
SL+
4
SL-
*JA4301
GND
GND
Q 3/5
139
8
A
B
C
D
E
F