Pioneer SC-68 Service Manual page 151

5
ATOR & MOS FET Driver
R4289
100
IC4201
IRS20957SPBFS1
!
DRIVER
1 16
VDD
CSH
2 15
CSD
VB
3 14
IN
HO
4 13
VSS
VS
5 NC1 12
NC2
R4229
6 VREF 11
2125
VCC
1.8k
7 10
OCSET
LO
8 DT 9
COM
R4232
2125
8.2k
S+12V
R4247
NM
R4213
R4240
NM
ACN7165-A
9
R4209 !
15k
IC4101
IRS20957SPBFS1
!
DRIVER
1 16
VDD
CSH
2 15
CSD
VB
3 14
IN
HO
4 13
VSS
VS
5 NC1 12
NC2
R4129
6 VREF 11
2125
VCC
1.8k
7 10
OCSET
LO
8 DT 9
COM
R4132
2125
8.2k
R4147 NM
R4113
R4140
NM
ACN7165-A
- 6/7
!
R4109
15k
V+12V
V+12VFILT1
R4271
4.7
GNDS
R4272
4.7
V-12V V-12VFILT1
5
6
VD1
R4286
D4217
2125
RF071M2S
0.47
!
Q4201
IRF6775MPBF-TRB
R4237
GATE DRAIN1
3216
9.1 3 4
ACN7194-A DRAIN2
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
!
Q4202
IRF6775MPBF-TRB
R4241
GATE DRAIN1
3216
9.1 3 4
ACN7194-A DRAIN2
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
R4246
NM
VS1
VD2
R4186
D4117
2125
RF071M2S
0.47
!
Q4101
IRF6775MPBF-TRB
R4137
GATE DRAIN1
3216
9.1 3 4
DRAIN2
ACN7194-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
!
Q4102
IRF6775MPBF-TRB
R4141
GATE DRAIN1
3216
9.1 3 4
DRAIN2
ACN7194-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
R4146
NM
VS2
V+12V
R4171
4.7
GNDS
R4172
4.7
V-12V
6
Output Power Stage and LP Filter
S
V+64V
VD
PWM1
ATH7090-A
L4200
VS
V-64V
Q4204
2SC4154-11(EF)
R4253
D4219
R4255
47k 1%
1SS355 22k
GNDP
S
1/7
RYA
V-12RY
V+64V
VD
S
PWM2
ATH7090-A
L4100
VS
V-64V
R4155 R4153
D4119
47k 1%
22k
1SS355
GNDP
V+12VFILT2
: Audio Signal Route
The ! mark found on some component parts should be replaced
with same parts(safety regulation authorized) of identical
V-12VFILT2
designation.
SC-68
7
D AMP ASSY (2/7)
S
2/7
(SC-68 : AWX1214)
(SC-67 : AWX1218)
1/7
GNDP
AMPOVERLOAD
GNDP
S
1/7, 3/7 - 6/7
V+12RY
RY4100
ASR7001-A
S
5/7
Q4112
RT1N140M
1/7
GNDP
Q4104
2SC4154-11(EF)
GNDP
AMPOVERLOAD
S
1/7, 3/7 - 6/7
7
8
A
KN4100
1 3
GND1 GND3
2 4
B
GND2 GND4
VNE1948-A
GNDP
C
*JA4101
AKE7142-A
1
R+
2
R-
3
7 L+
4
L-
5
C+
C+
6
C-
C_GND
D
GNDP
E
F
S
2/7
151
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