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Amplifier
SC-LX90
Service manual
Pioneer SC-LX90 Service Manual page 280
Audio/video multi-channel amplifier
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Contents
Table of Contents
Bookmarks
Table of Contents
Advertisement
1
A
Large size
SCH diagram
1/2
B
C
2/2
1/2
D
E
F
134
1
2
C515
IC503
ACH7276-A
K4H561638H-UCCC
0.1u/10
66
1
VDD1
VSS3
65
2
R519
DQ0
DQ15
33
3
64
DQ0
1
8
VDDQ1
VSSQ5
4
63
DQ1
2
7
DQ1
DQ14
62
5
DQ2
3
6
DQ2
DQ13
C517
6
61
DQ3
4
5
VSSQ1
VDDQ5
0.1u/10
7
60
DQ3
DQ12
59
8
R527
DQ11
DQ4
33
9
58
DQ4
1
8
VDDQ2
VSSQ4
10
57
0.1u/10
DQ5
7
2
DQ5
DQ10
56
11
DQ6
3
6
DQ6
DQ9
C519
12
55
DQ7
4
5
VSSQ2
VDDQ4
0.1u/10
13
54
DQ7
DQ8
C520
53
14
NC1
NC6
0.1u/10
52
15
VDDQ3
VSSQ3
R535
16
51
0.1u/10
DQS0
LDQS
UDQS
33
C523
17
50
NC2
NC5
0.1u/10
49
0.1u/10
18
VDD2
VREF
19
48
NC
VSS2
20
47
DQM0
LDM
UDM
21
46
DWE
/WE
/CK
22
45
DCAS
/CAS
CK
23
44
DRAS
/RAS
CKE
DCS1
24
43
/CS
NC4
25
42
NC3
A12
26
41
DBA0
BA0
A11
DBA1
27
40
BA1
A9
28
39
DA10
A10/AP
A8
29
38
DA0
A0
A7
30
37
DA1
A1
A6
31
36
DA2
A2
A5
32
35
DA3
A3
A4
33
34
VDD3
VSS1
C538
256Mbit DDR SDRAM
0.1u/10
C544
IC504
ACH7276-A
K4H561638H-UCCC
0.1u/10
1
66
VDD1
VSS3
2
65
R552
DQ0
DQ15
33
64
3
DQ16
1
8
VSSQ5
VDDQ1
4
63
DQ17
2
7
DQ1
DQ14
5
62
DQ18
6
3
DQ2
DQ13
C547
61
DQ19
6
4
5
VSSQ1
VDDQ5
0.1u/10
60
7
DQ3
DQ12
8
59
R562
DQ4
DQ11
33
9
58
DQ20
1
8
VDDQ2
VSSQ4
57
0.1u/10
10
DQ21
2
7
DQ5
DQ10
11
56
DQ22
3
6
DQ6
DQ9
C550
12
55
DQ23
4
5
VSSQ2
VDDQ4
0.1u/10
54
13
DQ8
DQ7
C551
14
53
NC1
NC6
0.1u/10
15
52
VDDQ3
VSSQ3
R572
51
0.1u/10
16
DQS2
UDQS
LDQS
C557
17
50
33
NC2
NC5
0.1u/10
18
49
0.1u/10
VDD2
VREF
19
48
NC
VSS2
20
47
DQM1
LDM
UDM
21
46
DWE
/WE
/CK
22
45
DCAS
/CAS
CK
23
44
DRAS
/RAS
CKE
24
43
DCS1
/CS
NC4
25
42
NC3
A12
26
41
DBA0
BA0
A11
27
40
DBA1
BA1
A9
28
39
DA10
A10/AP
A8
DA0
29
38
A7
A0
30
37
DA1
A1
A6
31
36
DA2
A2
A5
DA3
32
35
A3
A4
33
34
VDD3
VSS1
C580
256Mbit DDR SDRAM
0.1u/10
SC-09TX
2
3
QTL1013-A
R700
R596
C516
NM
NM
220u
R517
33
DREF
DQ0
8
1
R518
DQ1
7
2
33
1
8
DQ15
DQ2
6
3
DQ14
2
7
DQ3
5
4
3
6
DQ13
4
5
DQ12
R522
33
DQS0
R526
R525
33
33
C518
1
8
DQ11
DQ4
8
1
7
DQ10
DQ5
7
2
2
3
6
DQ9
DQ6
6
3
4
5
DQ8
DQ7
5
4
R531
33
DQ8
8
1
C521
DQ9
7
2
R534
DQS1
DQ10
6
3
C522
33
DQ11
5
4
DREF
DQS1
R538
33
R539
R540
33
1k
DQ12
8
1
DQM0
R541
DCLKZ
DQ13
7
2
0
R542
DCLK
DQ14
6
3
0
DCKE
DQ15
5
4
DCS2
DQS2
R543
33
DA11
R544
33
DA9
DQ16
8
1
DA8
DQ17
7
2
DA7
DQ18
6
3
DA6
DQ19
5
4
DA5
DQS3
R545
33
DA4
R546
33
DQ20
8
1
DQ21
7
2
DQ22
6
3
DQ23
5
4
DQ24
8
1
DQ25
7
2
R547
DQ26
6
3
33
DQ27
5
4
C545
DQ28
8
1
220u
DQ29
7
2
R548
33
DQ30
6
3
R551
33
1
8
DQ31
DQ31
5
4
2
7
DQ30
DWE
R554
47
6
DQ29
3
DCAS
R556
47
DQ28
4
5
DREF
R561
DCLK
33
R560
47
C548
DQ27
1
8
DBA0
R564
47
2
7
DQ26
DRAS
R565
47
3
6
DQ25
DCS1
R566
47
DQ24
4
5
DCLKZ
R567
47
DBA1
R568
47
DCS2
R569
47
C553
R570
47
R571
DQS3
DA0
1
8
33
C556
DA1
2
7
DREF
DA2
6
3
R573
DA3
4
5
1k
DA4
1
8
DQM1
R575
DCLKZ
DA5
2
7
0
R574
47
DCLK
DA6
R576
3
6
0
DCKE
DA7
4
5
DA8
1
8
DCS2
DA9
7
2
R577
47
DA11
DA10
3
6
DA9
DA11
4
5
DA8
DCKE
R578
47
DA7
DA6
DA5
DA4
3
4
L501
GND58
MDT(1)
MDT(0)
DT2_FD
V1
U1
T1
MDT(4)
MDT(3)
MDT(2)
DT2_VS
V2
U2
T2
DQS(0)
GND57
MDT(5)
DT2_HS
V3
U3
T3
MVDD9
MDT(7)
MDT(6)
MDT(8)
V4
U4
T4
DQS(1)
MDT(12)
MDT(10)
MDT(9)
V5
U5
T5
GND59
MDT(14)
MDT(13)
MDT(15)
V6
U6
T6
DQS(2)
MVDD8
MDT(16)
MDT(11)
V7
U7
T7
MDT(20)
MDT(19)
MDT(18)
MDT(17)
V8
U8
T8
DQS(3)
MDT(23)
MDT(22)
MDT(21)
V9
U9
T9
GND60
MDT(26)
MDT(24)
MDT(25)
V10
U10
T10
R10
MDT(27)
MDT(28)
MDT(29)
MDT(30)
V11
U11
T11
R11
GND61
WEZ
CASZ
DDRREF
V12
U12
T12
R12
CLK
BA0
RASZ
CS1Z
V13
U13
T13
R13
CLKZ
BA1
CS2Z
MAD(2)
V14
U14
T14
R14
MVDD10
MAD(10)
MAD(0)
MAD(5)
V15
U15
T15
R15
MAD(1)
MAD(3)
MAD(4)
NCAL
V16
U16
T16
R16
MAD(6)
MAD(7)
MAD(8)
CKE
V17
U17
T17
R17
GND62
MAD(9)
MAD(11)
XTAL2
V18
U18
T18
R18
R580
1M
4
DT2(1)
DT2(5)
R1
P1
N1
DT2(0)
DT2(4)
R2
P2
N2
DT2_CK
DT2(3)
R3
P3
N3
FD_SEL
DT2(2)
R4
P4
N4
GND55
IOVDD19
R5
P5
N5
MVDD1
GND49
R6
P6
N6
MVDD2
DVDD16
R7
P7
N7
MVDD3
GND50
R8
P8
N8
MVDD4
GND51
R9
P9
N9
MVDD5
GND52
P10
N10
MDT(31)
DVDD17
P11
N11
MVDD6
DVDD18
P12
N12
MVDD7
GND53
P13
N13
GND56
PVSSA
P14
N14
PVDDA
GND54
P15
N15
ATEST2
ATEST1
P16
N16
XTAL1
EXT_OUT
P17
N17
EXT_IN
HDO(0)
P18
N18
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Chapters
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Section 2
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Safety Information
149
Table of Contents
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