Pioneer SC-68 Service Manual page 153

5
ODULATOR & MOS FET Driver
R4489
100
7
E2
Q4405
2SC4154-11(EF)
12
IC4401
6
IRS20957SPBFS1
0k
!
DRIVER
1 16
VDD
CSH
2 15
CSD
VB
3 14
IN
HO
4 13
VSS
VS
5 NC1 12
NC2
R4429
6 VREF 11
VCC
2125
1.8k
7 10
OCSET
LO
8 DT 9
COM
R4432
2125
8.2k
VSS+12V
R4447
NM
R4413
R4440
NM
ACN7165-A
R4389
R4409
!
100 15k
08
Q4305
IC4301
6
2SC4154-11(EF)
IRS20957SPBFS1
0k !
DRIVER
1 16
VDD
CSH
2 15
)
CSD VB
3 14
IN
HO
4 13
VSS
VS
5 NC1 12
NC2
R4329
6 VREF 11
VCC
2125
1.8k
7 10
OCSET
LO
8 DT 9
COM
R4332
2125
8.2k
VSS+12V
R4347
NM
R4313
R4340
NM
ACN7165-A
B
UT
7, 2/7,
R4309
!
7 - 6/7
15k
V+12V
R4471
4.7
GNDS
R4472
4.7
V-12V
ted.
SRCH
5
6
VD3
R4486
D4417
2125
RF071M2S
0.47
!
Q4401
IRF6775MPBF-TRB
R4437
GATE DRAIN1
3216
9.1 3 4
DRAIN2
ACN7194-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
!
Q4402
IRF6775MPBF-TRB
R4441
GATE DRAIN1
3216
9.1 3 4
DRAIN2
ACN7194-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
R4446
NM
VS3
VD4
R4386
D4317
2125
RF071M2S
0.47
!
Q4301
IRF6775MPBF-TRB
R4337
GATE DRAIN1
3216
9.1 3 4
DRAIN2
ACN7194-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
!
Q4302
IRF6775MPBF-TRB
R4341
GATE DRAIN1
3216
9.1 3 4
ACN7194-A DRAIN2
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
R4346
NM
VS4
V+12VFILT3
V+12V
R4371
4.7
GNDS
R4372
4.7
V-12VFILT3
V-12V
6
7
Output Power Stage and LP Filter
V+64V
VD
PWM3
L4400
ATH7090-A
VS
V-64V
2SC4154-11(EF)
R4453
R4455 D4419
47k 1%
1SS355 22k
GNDP
RYS
V-12RY
V+64V
VD
S
PWM4
L4300
ATH7090-A
VS
V-64V
R4353
R4355 D4319
47k 1%
1SS355
GNDP
V+12VFILT4
: Audio Signal Route
The ! mark found on some component parts should be replaced
with same parts(safety regulation authorized) of identical
V-12VFILT4
designation.
SC-68
7
8
D AMP ASSY (3/7)
S
3/7
(SC-68 : AWX1214)
(SC-67 : AWX1218)
KN4200
1
GND1
2
S
GND2
1/7
VNE1948-A
GNDP
GNDP
Q4404
AMPOVERLOAD
GNDP
S
1/7, 2/7,
4/7 - 6/7
V+12RY
RY4300
ASR7001-A
Q4312
RT1N140M
1/7
GNDP
GNDP
Q4304
2SC4154-11(EF)
GNDP
AMPOVERLOAD
S
1/7, 2/7,
22k
4/7 - 6/7
8
A
3
GND3
4
GND4
B
C
*JA4301
AKE7141-A
1
SR+
2
5 SR-
3
SL+
4
SL-
D
E
F
S
3/7
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