Pioneer SC-LX85 Service Manual page 166

5
FET Driver
D4717
RF051VA2S
IRF6775MPBF-TRB
IC4701
R4737
GATE
IRS20957SPBF
3216
!
9.1 3
DRIVER
ACN7194-A
1 16
SOURCE2
VDD CSH
2
2 15
SOURCE1
CSD VB
1
3 14
IN HO
4 13
VSS VS
5 12
NC1 NC2
R4729
6 11
2125 VREF VCC
IRF6775MPBF-TRB
1.8k R4741
7 10
GATE
OCSET LO 3216
9.1 3
8 9
ACN7194-A
DT COM
SOURCE2
R4732 2
SOURCE1
2125
5.6k 1
R4746
1M
R4709
10k
6
The ! mark found on some component parts should be replaced
with same parts(safety regulation authorized) of identical
designation.
5
6
VD7
!
Q4701
DRAIN1
4
DRAIN2
5
DRAIN3
6
DRAIN4
7
PWM7
!
Q4702
ATH7090-A
DRAIN1
L4700
4
DRAIN2
5
DRAIN3
6
DRAIN4
7
VS7
NOTE
1. RESISTORS
Unit: k-k
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
6
R
5/6
Output Power Stage and LP Filter
R
1/6
V+64V
VD
VS
V-64V
GNDS
C4763
NM
C4755 Q4704
0.01u/50 LSC4081UB(QRS)
R4753
R4755 D4719
47k 1%
1SS352 22k
V+12RY
ASR7001-A
GNDS
R
1/6
Q4712
RYC
RT1N140M
V-12RY
, M-M or unless otherwise noted.
SC-57
7
IR POWER AMP ASSY (5/6)
(SC-57
(SC-55/SC-1526-K : AWH7039)
KN4400
1
GND1
2
GND2
VNE1948-A
GNDP
AMPOVERLOAD
GNDP
R
1/6 - 4/6, 6/6
RY4700
: Audio Signal Route
1608 SIZE 2125 SIZE 3216 SIZE
RS1/16S*** RS1/10S***
2125
RN1/16S***
RS1/8SQ***
2125
1/8W
CCSR***
CCSQ***
CKSR*** 2125
CKSQ***
7
8
: AWH7030)
A
B
3
GND3
4
GND4
C+
R
2/6
C_GND
C
D
E
RS1/8S***
3216
RS1/4SA***
3216
1/4W
CCS***
3216
CKS***
F
R
5/6
157
8