Pioneer SC-LX81 Service Manual

142
SC-LX81
1
2 3 4
A
B
C
D
E
F
1
2 3 4
10.25 ICEPOWER AMP (5/5)
Q 5/5
CN4700
XKP3062-A
C+ 1
C- 2
GNDC 3
V+12C 4
V-12C 5
ACH7304-A
C4750
560u
ACH7304-A
C4749
560u
C4857
2200p/50
YB
C4719
0.47u/16
2125
QYB
C4720
1u/10
YB
C4729
0.1u/16
YB
C4730
1u/10
YB
C4711
NM
C4710
NM
C4715 1u/10
YB
C4705
ACG7069-A
1000p
C4704
ACG7069-A
1000p
C4706
ACG7072-A
470p
C4707
ACG7072-A
470p
C4714
ACG7068-A-T
680p
C4722
ACG7073-A
2200p
C4728
ACG7073-A
2.2u
C4723
ACG7066-A
39p
C4725
ACG7071-A
47p
C4727
ACG7070-A
4.7P
C4756
0.1u/16
YB
C4759
NM
C4718
1u/10
YB
C4818 1u/10
YB
C4747
1u/10
YB
C4757
2200p/50
YB
C4748
1u/10
YB
C4847
1u/10
YB
C4721
0.1u/16
YB
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
IC4702
UPC4570G2-A
(1/2)
3
4
2
1
8
IC4703
NJM4565MD
(1/2)
3
4
2
1
8
IC4703
NJM4565MD
(2/2)
5
4
6
7
8
IC4702
UPC4570G2-A
(2/2)
5
6
7
L4703
ATL7018-A
1u
L4702
ATL7018-A
1u
Q4708
2SD2704K
R4706
0
R4723
1k
1%
R4726
1.5k
1%
R4773
100k
R4702
910
0.5%
R4776
1.8k1%
R4731
68k
2125
1% 1/8W
R4730
47k
1% 1/8W
2125
R4999
10k
R4772
NM
R4771
0
R4998
10k
R4815
0
R4715
0
R4713
NM
R4710
470
R4734
1.2k
1%
R4725
1k
1%
R4712
22k
R4704
1k
0.5%
R4711
220k
R4724
27k
1%
R4738
2.7k
1%
R4739
56k
1%
R4735
1.8k
1%
R4733
1.8k
1%
R4742
0
R4732
18k
1%
R4727
1.5k
1%
R4760
10
R4860
10
R4722
240k
R4720
220k
R4774
1M
R4717
100k
R4718
4.7k
R4719
1M
R4721
1.8k
R4728
27k
2125
1%
R4741
15k
R4740
10k
R4744
1k
R4743
1k
R4737
27k
3216
1% 1/4W
R4777
20k
3216
1% 1/4W
R4736
15k
1%
R4705
1k
0.5%
R4806
0
R4700
100
0.5%
R4701
100
0.5%
R4708
NM
R4703
910
0.5%
V-12V
V+12V
V+5V
V+5V
V-5V
V-12V
VS7
VD7
V-5V
V-64V
VD
V-5VFILT4
V-5VFILT4
V-5VFILT4
V+5V
V+5V
V+12V
V+64V
V-5V
C_IN
AMUTE
OSC1
VS_CHK4
PWM7
AMPDISABLE4
OUT7
ZOBEL7
VD_CHK4
MOD7
OUT7_R
C_IN
VS_CHK4
AMPOVERLOAD
VD_CHK4
MOD7
220u/25
C4708
HAT
220u/25
C4808
HAT
R4763
105k
1% 1/4W
3216
R4863
105k
1% 1/4W
3216
Q4709
2SC4154(EFG)
D4711
NM
D4700
1SS302
R4764
3.3k
1%
R4864
3.3k
1%
R4778
NM
R4729
1
1/8W
2125
2SA1682(4)
Q4707
2SA1682(4)
Q4706
C4716
1u/16
YB
C4709
0.01u/16
2125
CFHXSQ103J16-T
C4809
0.01u/16
2125
CFHXSQ103J16-T
C4724
ACG7078-A
56p
C4760
1000p/50
CHC4860
1000p/50
CH
R4762
ACN7165-A
3216
10
R4761
ACN7165-A
3216
10
R4714
4.7k
C4726
ACG7079-A
75p
ICC1-AVR
IC4700
Vd_check
1
Vs_check
2
Discharge
3
OC_mon
4
Enable
5
Thermal
6
In_A_Ch2
7
Out_A_Ch2
8
In_B_Ch2
9
Out_B_Ch2
10
In_C_Ch2
11
Pwm-_ch2
12
Pwm+_ch2
13
Mod_Ch2
14
ZobelSense2
15
Average2
16
Average1
17
NTC_in
18
ZobelSense1
19Mod_ch1
20
Pwm-_ch1
21
Pwm+_ch1
22
In_C_Ch1
23
Out_B_Ch1
24
In_B_Ch1
25
Out_A_Ch1
26
In_A_Ch1
27
NC
28
Vdd
29
UVP_en
30
Main_Gnd
31
Vss
32
Ref_ch1
33
CS1_ch1
34
CS2_ch1
35
RECout_ch1
36
Vin__ch1
37
DC_FB_ch1
38
Vin_ch2
39
DC_FB_ch2
40
RECout_ch2
41
CS1_ch2
42
CS2_ch2
43
Ref_ch2
44
ACH1479-A
C4817
100u
ACH1479-A
C4712 100u
ACH1479-A
C4717
100u
ACH1479-A
C4713
100u
MODULATOR
DC offset
DC offset
!
The mark found on some component parts should be replaced
with same parts(safety regulation authorized) of identical
designation.
CN3810
P
1/5, 2/5, 3/5Q
1/5, 2/5, 3/5, 4/5
Q
1/5
Q
1/5, 2/5,
3/5, 4/5
Q
(C)
(C)
(C)

Pioneer SC-LX81 Specifications

General

Brand	Pioneer
Model	SC-LX81
Category	Receiver
Language	English