Pioneer SC-LX81 Service Manual

134
SC-LX81
1
2 3 4
A
B
C
D
E
F
1
2 3 4
10.21 ICEPOWER AMP (1/5)
Q 1/5
CKS3382-A
CN4000
Disable1 1
Disable2 2
Disable3 3
Disable4 4
AMUTE 5
SBMUTE 6
AMPTX1 7
AMP_Overload
8
RYA 9
RYC 10
RYS 11
RYB 12
Max_Temp 13
Thermal_Overload 14
DC_DETECT 15
GND16
GND17
C4023
10u/10
3216
SYB
C4027
0.1u/16
YB
C4026
0.1u/16
YB
C4017
1000p/25
CH
C4001
1000p/25
CH
C4016
1000p/25
CH
C4015
1000p/25
CH
C4014
1000p/25
CH
C4021
1000p/25
CH
C4029 1u/10
YB
C4013
1000p/25 CH
C4025 1u/10
YB
C4022 1u/10
C4012
1000p/25
CH
C4019
1000p/25
CH
C4011
1000p/25
CH
C4018
1000p/25
CH
C4020
1000p/25
CH
C4004
1000p/25
CH
C4003
1000p/25
CH
C4002
1000p/25
CH
C4028
0.01u/25
YB
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GNDGND
GND
GND
GND
GND
GND
GND
GND
RT1N241M Q4000
RT1N140M
Q4007
RT1N140M
Q4005
RT1N140M
Q4009
RT1N140M
Q4011
RT1P241M
Q4008
RT1P241M
Q4010
RT1P241M
Q4004
RT1P241M
Q4006
HN1C01FU(YGR)
Q4014
E1
1
B1
2
C2
3
E2
4
5
B2
6
C1
R4068
10k
R4067
10k
R4010
220
R4069
47k
R4009
220
R4064
47k
R4063
2.2
R4065
NM
R4045
10k
R4011
220
R4031
100
R4002
100
R4028
100
R4029
100
R4036
100
R4043
100
R4046
100
R4047 100
R4048
100
R4049
100
R4058
68k
R4053
100
R4055
22k
R4024
100
R4025
100
R4026
100
R4003
100
R4030
100
R4012
220
R4022
100
R4021
100
R4023
100
R4001
100
R4052 100
R4051 100
R4050 100
R40088.2k
R4007 8.2k
R4006 8.2k
R4005 8.2k
R4044
100
R4042
27k
R4037
100
R4038
10k
R4039
22k
R4056
470k
R4004
100
R4041
10k
R4057
470
2125
1/8W
V+5V
V+5V
V+5V
V-5V
V+5V
V+5V
V+5V
V+5V
V+5V
DC_DETECT1
AMPDISABLE4
AMPDISABLE3
AMPDISABLE2
TEMP_OUT
DCdetRY
AMPDISABLE1
AMPOVERLOAD
DCdetRY
DCdetRY
DCdetRY
AMPDISABLE1
AMPDISABLE2
RYB
AMPDISABLE3
RYS
AMPDISABLE4
RYC
DCdetRY
RYA
OSC1
R4077
NM
IC4002
NM
4
1 2
5 3
R4078
0
V+5V
R4079
NM
GND
C4030
NM
IC4003
21
IC4003
43
IC4003
65
IC4003
TC74VHC04FTS1
89
IC4003
1011
IC4003
12
13
7
14
IC4004
3
1
2
14
7
IC4004
6
4
5
14
7
IC4004
8
9
10
14
7
IC4004
TC74VHC08FTS1
11
12
13
14
7
R4013
100
R4014
100
R4015
100
R4016
100
AMPOVERLOAD
GND
GND
GND
V+5V
C4005
0.1u/16
YB
C4006
0.1u/16
YB
R4017
0
R4018
0
V+5V
GND
330u/10
C4010
HAT
100u/10
C4024
HAT
R4080
3.3k
R4081
3.3k
R4082
3.3k
R4083
3.3k
R4084
12k
R4085
12k
R4086
12k
R4087
12k
C4031
0.1u/16
YB
C4032
0.1u/16
YB
C4033
0.1u/16
YB
C4034
0.1u/16
YB
GND
GND
GND
GND
D4007 1SS352
D4008 1SS352
D4009 1SS352
D4010 1SS352
2SA1602A(EF)
Q4001
D4004
1SS352
D4002
1SS352
D4003
1SS352
D4001
1SS352
D4005
1SS352
D4006
NM
D4011
1SS352
D4012
1SS352
D4013
1SS352
D4014
1SS352
GND
C4035
0.1u/16
YB
Q4015
2SC4154(EFG)
R4088
12k
R4089
12k
HN1C01FU(YGR)
Q4016
E1
1
B1
2
C2
3
E2
4
5
B2
6
C1
330u/10
C4036
HAT
DC_DETECT2
GND
C4037
NM
IC4001
BU7262SFVM
(2/2)
5
4
6
7
8
IC4001
BU7262SFVM
(1/2)
3
4
2
1
8
R4091
47k
GND1
R4027
1.8k
R4090
1.8k
R4066
470k
R4070
750k
R4059
2.2
R4094
2.2k
IC4005
HA17431GLTPA
R4095
NM
R4096
0
C4040
1u/10
YB
GND
IC4000
BU7262SFVM
(1/2)
3
4
2
1
8
IC4000
BU7262SFVM
(2/2)
5
4
6
7
8
IC4006
TC7WH08FU
(1/2)
7
1
2
IC4006
TC7WH08FU
(2/2)
3
5
6
8
4
GND
V+5V
R4098
0
C4041
0.1u/16
R4097
0
R4054
3.3k
R4060
56k 1%
R4061
33k 1%
R4062
3.3k
DC DETECT
CIRCUIT
OV ER HEAT
DETECT CIRCUIT
CIRCUIT
AM CONTROL
CN7051
F
2/5, 3/5, 4/5, 5/5Q
2/5, 3/5,
4/5, 5/5
Q
2/5, 3/5,
4/5, 5/5
Q
2/5, 3/5,
4/5
Q
2/5, 3/5,
4/5, 5/5
Q
2/5, 3/5, 4/5, 5/5
Q
2/5
Q
3/5
Q
4/5
Q
5/5
Q
2/5
Q
5/5
Q
3/5
Q4/5Q
3/5Q
2/5
Q
4/5
Q
5/5
Q

Pioneer SC-LX81 Specifications

General

Brand	Pioneer
Model	SC-LX81
Category	Receiver
Language	English