Pioneer SC-82 Service Manual page 93

5
Power Supply for
IRPOWER AMP GATE DRIVER
CN7241
!
P7241
2 1
NM
R7275
JV7241
!
+12.5V
IC7271
NJM78M08FA
!
IN
D7271
3
COM
1SR154-400
!
D7272
1SR154-400
!
D7273
!
1SR154-400
!
D7274
COM
2
IN
1SR154-400
IC7272
-12.7V NJM79M08FA
R7276
D7211
NM
!
Q7211
2SD2400A
3 C7412
M NM
D7213
DZ2J075M0
Q7205
D7214
DTA124EUA
DZ2J075M0
Q7204
DTC124EUA
Q7207
DTC124EUA
Q7212
2SB1569A
D7212
NM
R7277
!
+20V
IC7251
NJM78M12FA
D7251 IN
3
COM
154-400
D7252
154-400
GND_DF
D7253
54-400 !
D7254
COM
2
IN
154-400
IC7252
-20V
NJM79M12FA
R7278
5
6
R
1/6
-B+15V
1
2
-B
CN4002
KM200NA2
Power Supply for
D AMP MODURATOR
NM
V+8_MD
1
OUT
2
3
GND_MD
OUT
1
V-8_MD
NM
FANCTLL
FANCTLH DTA124EUA
Q7224
D7215
1SR154-400
Q7225
D7200
1SS355
DTC124EUA
D7216
1SR154-400
!
NM
V+12_DF
1
OUT
2
R7255
R7253
3
NM
*R7256
OUT
1
1.2
R7254
NM
V-12_DF
NM
6
CN7271
1
V+8_MD
2 GND_MD
3
V-8_MD
R7271
4
GND_MD(S)
0
KM200NA4
V+8_MD
DTC124EUA
Q7223
Q7222
DTA143EUA
D7221
R7221
Q7221
DTC124EUA
NM
22k
Q7226
DTC124EUA
Power Supply for
D AMP INPUT STAGE & SP RELAY
CN7251
KM200NA7
V+12_DF
1
GND_DF
2
R
V-12_DF 1/6
3
1.5
GND_RY
4
V+12_RY CN4004
5
V-12_RY
6
V-12_RY
7
GND_DF
SC-82
7
IR REG_S ASSY (1/2)
U
1/2
(AWX1878)
R
1/6
CN4003
Power Supply for
COOLING FAN
CN7281
G
XFANERR
1
FANCTLL
2
CN7009
FANCTLH
3
CKS3368-A
JP7291
AC
V+FAN
1
C7294
V-FAN
2
NM
LOCK DET CN5931
3
CH
C7222
ADX7778-A
NM
CH
R7223
3216
NM
FAN V+FAN
0V
OFF
LOW -0.7V
HIGH +6.5V
NOTE
1. RESISTORS
Unit: k-k , M-M or unless
otherwise noted.
Rated Power: 1/10W unless
otherwise noted.
Toleranee: (J)5% unless
otherwise noted.
MUF : RD1/4MUF
2125 : RS1/8SQ
3216 : RS1/4SA
2. CAPACITORS
Unit: p-pF or u-uF unless
otherwise noted.
Ratings: Capacity(F)/Voltage(V)
unless otherwise noted.
CH : CCSRCH , CFTLA : CFTLA
NO MARKED : CKSRYB or CEAK
3. NM: No Mount
The mark found on some component parts should be replaced
!
with same parts (safety regulation authorized) of identical designation.
7
8
A
B
C
D
V-FAN
0V
-6.5V
-6.5V
E
F
U
1/2
93
8