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Pioneer Manuals
Amplifier
SC-LX90
Service manual
Pioneer SC-LX90 Service Manual page 261
Audio/video multi-channel amplifier
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Contents
Table of Contents
Bookmarks
Table of Contents
Advertisement
5
A16
A15
A14
A13
A12
A11
A10
A9
XWE
D6391
RB501V-40
XWR
C6392
STBY
R6391
A18
STBY
A8
A7
A6
A5
A4
A3
A2
IC6392
TC7SH08FUS1
5
2
CS0
CS2
1
3
V50E
100k
R6401
100k
R6402
100k
R6403
100k
R6410
100k
R6412
1
3
5
7
GNDU
2
4
6
N6403
KS1764
AD
5
6
DLF
IC6391
AYW7218
(MBM29LV400TC-70PFTN)
A17
1
48
A15
A16
R6392
2
47
A14
XBYTE
3
46
47k
A13
VSS
DQ15
4
45
A12
DQ15
5
44
DQ7
A11
DQ7
DQ14
6
43
A10
DQ14
7
42
DQ6
A9
DQ6
8
41
DQ13
A8
DQ13
9
40
DQ5
NC
DQ5
10
39
DQ12
NC
DQ12
DQ4
11
38
XWE
DQ4
12
37
XRESET
VCC
13
36
DQ11
NC
DQ11
14
35
DQ3
NC
DQ3
15
34
DQ10
RY/XBY
DQ10
DQ2
16
33
NC
DQ2
17
32
DQ9
A17
DQ9
DQ1
18
31
A7
DQ1
19
30
DQ8
A6
DQ8
20
29
DQ0
A5
DQ0
21
28
XOE
A4
XOE
22
27
A3
VSS
XCE
23
26
A2
XCE
24
25
A1
A1
A0
4
232C or SR+
IC6051
TC74VHC125AFTS1
V+5BF
V33D
C6051
0.1/16
14
BFSRT
9
8
3/4
10
R6052
XSRSW
7
100
14
14
23RXD
2
3
5
6
1/4
2/4
1
4
SR+SW
7
7
23SW4
V+5BF
C6052
0.1/16
R6054
14
BFSRR
11
12
4/4
13
XSRSW
100
7
14
14
23TXD
6
5
3
2
2/4
1/4
4
1
SR+SW
7
7
14
23CTS
8
9
3/4
10
23SW4
7
IC6052
TC74VHCT125AFTS1
GNDU
DISPLAY U-com Down Lord
( From RS-232C ) or
SR+ TX/RX UART Switch
R6405
R6404
R6406
R6407
R6408
R6409
R6411
9
11
13
15
17
19
8
10
14
16
18
20
12
CN6402
CKS1764
CN8509
1/2
6
KEY1
KEY2
KEY3
KEYP
VJOGB
VJOGA
FJOGB
FJOGA
LPOWER
LPHASE
LHDMI
LILINK
LMCACC
LXXX
HPDET
MCDET
ALERT
LI2CK
LI2DT
LCDCS
LCDDT
LCDCK
EXPCK
EXPDT
S23RX
EXPST
EXPOE
S23TX
RMC
S23CT
FANDET
FANHL
FANON
LACRY
V33D
V12F
V56U
V56ST
100k
100k
100k
100k
GNDU_MN
100k
100k
100k
13
11
9
7
5
3
GNDU
10
8
6
4
2
12
AD
CN8508
1/2
SC-09TX
7
IR 232C ASSY
AC
2/2
CN6409
VKN1412
CECIO
CECIO
8
HDAD1
7
AD5V1
HDAD2
AD5V2
6
HDDI1
DRCT1
5
HDDI2
DRCT2
4
HTPLG
HTPLG
3
V50E
V50E
2
GNDU
1
GNDU
CN6405
R6251
VKN1418
100
14
KEY1
13
KEY2
12
KEY3
11
KEYP
10
VJOGB
9
VJOGA
8
FJOGB
7
FJOGA
6
LED POWER
5
LED PHASE
4
LED HDMI
3
LED ILINK
2
LED MCACC
1
LED IRSNC
CN6406
VKN1416
12
11
10
ALERT
9
8
7
6
5
4
3
2
1
CN6407
V12F
KM200NA7
7
GNDRY
V56ST
6
V+12RY
5
V+5_6ST
4
RMC
V56U
3
GNDU
2
V+5_6U
1
GLCD
GNDU
GLCD
1
GNDST
2
FAN DET
3
FAN H/L
4
FAN ON/OFF
5
AC RY
V56ST
6
STBYOFF
7
GNDST
8
GNDST
9
V+5.6ST
CN6408
CKS3374
GNDST
1
CN6401
XKP3077
6001
VEF1040
7
8
A
B
C
HP DET
MICDET
LCD SI
LCD SD
LCD CS
LCD DI
LCD CL
EXL CLK
EXL DT
EXL STB
EXL EN
D
E
F
AC
2/2
115
8
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Contents
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Chapters
Section 1
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Section 2
60
Safety Information
149
Table of Contents
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