Pioneer SC-99 Service Manual page 34

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1
Overheat Detection
S
D AMP ASSY
A
R4024
R4025
B
VD1
C
!
Q4208
2SC4081(QRS)
R4266
R4267
TEMP
10k
1%
1k
1%
VD2
GND_TP2
!
R4166
R4167
10k
1%
Q4108
1k 1%
2SC4081(QRS)
GND_TP2
D
DISPLAY
L
ASSY
E
CN6001
-30
24
64
-9
UCOM
IC6001
F
34
1
2
R4022
100
100
R4021
220
100
IC4005
TA76L431FB
GND
GND_TP
V+5V_S
2SA1576A(QRS)-TLB
Q4211
R4275
Q4210
10
2SA1514K(RS)
GND_TP
R4270
Q4217
2SC4081(QRS)
22k
R4280
10k
GND_TP2
GND_TP
Q4110
2SA1514K(RS)
GND_TP
R4170
Q4117
2SC4081(QRS)
22k
R4180
10k
GND_TP2
GND_TP GND_TP
G
DIGITAL MAIN ASSY
CN7903
CN7902
-10
-5
-2
-31
DISPLAY BRIDGE
AF
ASSY
2
3
R4094
2.2k
R4054
3.3k
R6428
0
R4097
27
GND_TP
GND_TP
GND_TP
GND_TP
Q4411
2SA1576A(QRS)-TLB
GND_TP
R4480
10k
Q4311
2SA1576A(QRS)
-TLB
GND_TP
Q4111
2SA1576A(QRS)-TLB
R4380
10k
S
S
2/6
3/6
CN602
CN7951
CN601
-3
-3
-35
-16
-16
-38
CN603
CN7952
Y
SC-99
3
4
XTEMPERR5
OVER HEAT
DETECT CIRCUIT
V+5V_S
R4058
68k
VCC
100
100
6
8
D4005
7
R5031
R5032
1SS355-TRB
4
5
GND
IC4001
BU7262SFVM
(2/2)
IC4001
(1/2)
BU7262SFVM
VCC
2
8
1
R4062
4
R4064
3
3.3k
GND
47k
Q4611
2SA1576A(QRS)
Q4711
2SA1576A(QRS)-TLB
2SA1576A(QRS)-TLB
GND_TP
GND_TP
GND_TP
R4680
R4780
10k
10k
Q4511
2SA1576A(QRS)
2SA1576A(QRS)
-TLB
GND_TP
GND_TP
R4980
R4580
10k
S
S
4/6
5/6
INTERFACE_M
H
ASSY
CN7954
CN7004
-6
-6
-9
-9
CN7953
CN7003
CONNECT_M
ASSY
4
CN4000
-15
AMP_TEMP
-16
Q4811
R4880
10k
Q4911
10k
S
6/6
CN7006
-4
XTEMPSD5
AMP_TEMP
-5

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