D Amp_Ss Assy (5/6) - Pioneer SC-82 Service Manual

5
MODULATOR & MOS FET Driver
6/6
V+5VFILT7
V+5V_S
GNDS
R4760
120
IC4701 !
IRS2092SPBF
DRIVER
1 16
VAA
CSH
2 15
GND
VB
3 14
IN-
HO
R4790 4 13
COMP
VS
12
R4789 5 CSD 12
VCC
120
6 VSS 11
LO
R4729
7 10
VREF
2125
COM
2.2k *R4732
8 OCSET 9
2125
DT
9.1k
GNDS
7
V
R4704
R4740
3216 NM
47
R4709
!
22k
VD
VD7
V+64V
*R4725
0.22 /5W
NM
GNDP
*R4726
0.22 /5W
NM
V-64V
VS
VS7
!
V+5V_S
R4775
Q4710
GND_TP
4767
2SA1514K(RS) 10
R4770
1%
Q4717
2SC4081(QRS)
22k
GND_TP
GND_TP2
GND_TP
5
6
VD7
D4717 R4786
2125
RF071M2S 100
!
Q4701
IRF6775MPBFS1-TRB
R4737
GATE DRAIN1
3216
10 3 4
DRAIN2
ACN7165-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
!
Q4702
IRF6775MPBFS1-TRB
R4741
GATE DRAIN1
3216
10 3 4
DRAIN2
ACN7165-A
5
SOURCE2 DRAIN3
2 6
SOURCE1 DRAIN4
1 7
VS7
Q4711
2SA1576A(QRS)
TEMP_OUT
R4710
R
1/6 - 4/6, 6/6
10k
6
R
1/6
V+64V
VD
PWM7
ATH7090-A
L4700
GNDP
VS
V-64V
Q4704
D4719
2SC4081(QRS)
1SS355
R4755 R4753
100k 1%
47k
R R4791
1/6, 2/6
RY+
3216
12
R
2/6 RY_C
: Audio Signal Route
1608 SIZE 2125 SIZE
RS1/16S***
RN1/16S***
CCSR***
CKSR***
NOTE
1. RESISTORS
Unit: k-k , M-M or unless otherwise noted.
Rated Power: 1/16w unless otherwise noted.
Toleranee: (J)5% unless otherwise noted.
2. CAPACITORS
Unit: p-pF or u-uF unless otherwise noted.
Ratings: Capacity(F)/Voltage(V) unless otherwise noted.
YB:CKSRYB, QYB:CKSQYB,SYB:CKSYB, CH:CCSRCH
HAT:CEHAT, ZL:CEHAZL
3. NM: No Mount
The mark found on some component parts should be replaced
!
with same parts (safety regulation authorized) of identical designation.
SC-82
7

D AMP_SS ASSY (5/6)

R
5/6
(SC-82 : AWX1926)
(SC-81 : AWX1919)
Output Power Stage and LP Filter
R6445
AMPOVERLOAD
GNDP
V+12RY 0
R
1/6 - 4/6, 6/6
RY4700
XSR3015-B
R5200
NM
GNDP
Q4712
2SC2412K(QRS)
3216 SIZE
RS1/10S*** RS1/8S***
2125 3216
RS1/8SQ*** RS1/4SA***
2125 3216
1/8W 1/4W
CCSQ*** CCS***
2125 3216
CKSQ*** CKS***
7
8
A
KN4400
1 3
GND1 GND3
B
2 4
GND2 GND4
VNE1948-A
GNDP
C+
C_GND
R
2/6
C
D
E
F
R
5/6
77
8