Pioneer SC-27 Service Manual page 53

5
Overheat Detection
Q
ICEPOWER AMP ASSY
VD1
FR ch
R4266
10k
1%
VD2
FL ch
R4166 R4167
10k 1% 1k 1%
IC4005
HA17431GLTPA
R4054
3.3k
GND
GND GND
DISPLAY
K
ASSY
CN8202
-12
72
2
-5
UCOM
IC8001
5
6
Temperature Detection Circuit (1-Circuit for each Amp 1-Channel)
V+5V
R4275
Q4210
R4267
10
2SA1514K(RS)
R4270
1k 1%
1k
GND
GND
Q4110
2SA1514K(RS)
R4170
1k
GND
GND
V+5V
R4094
2.2k
2
IC4000
BU7262SFVM
5 3
(2/2)
4
V+5V 7
8
6
R4097
0
GND
GND GND
DIGITAL MAIN
E
ASSY
CN1401
-12
-5
6
7
Q4211
2SA1602A(EF)
2
8
GND
1
4
3
IC4204
NJM12904V
Q4111
GND
2SA1602A(EF)
IC4204
NJM12904V
SL ch
6
GND
7 SR ch
SBL ch
5
SBR ch
C ch
V+5V
R4058 68k
8
D4005
1
1SS352
4
IC4000 (1/2)
BU7262SFVM
IC4001 (1/2)
GND
BU7262SFVM
R4062
3.3k
INTERFACE
F
ASSY
CN1250 CN7003
-13 -8
-12 -9
SC-27
7
8
R4022 R4024
100 100
GND
CN4000
-13
AMPTEMP
XTEMPERR5
-14
Q4311
Q4411
Q4511
Q4611
Q4711
GND
V+5V
2
8
1
4
R4064
3
47k
GND GND
CN7012
-4
XTEMPERR5
AMPTEMP
-5
8
A
B
C
D
E
F
53