Main Digital Assy (5/8) - Pioneer SC-LX90 Service Manual

1
10.20 MAIN DIGITAL ASSY (4/8)
A
O
7/8
IESD
HDSD
ADSD
B
IEFD
HDFD
ADFD
C
Z4XM
ADLK
ADMK
ADBK
XTL0
D
XM
DIBK
XMBK
DIMK
XMMK
EXCEPT
AWX8721
E
Z4XM
XMMK
XMLK
XMFD
XM
DIR
F
O
4/8
42
1
2
O
6/8,7/8
O
6/8
ACH7267
C331 47/6.3
C338
C339 stby
0.01 YB
1 16
X1G VCC
2 15
B X2G
R351 0 3 14
A
1C3
R350 0 4 13
2C3
1C2
SD BD
5 12
1C1 2C2
6 11
1C0 2C1
R352 47 7 10
1Y 2C0
8 9
GND 2Y
IC334
TC74VHC153FT
C340
C341 stby
0.01 YB
1 16
X1G VCC
2 15
B X2G
R357
0 3 14
A
1C3
R356
0 4 2C3 13
1C2
FD CD
5 12
1C1 2C2
6 11
1C0 2C1
R358 47 7 10
1Y 2C0
8 9
GND 2Y
IC335
TC74VHC153FT
C332 0.1/16
YB
C333
AWX8721 (1/4)
YB IC331
470p
ONLY 14 R324
2 3
1
R323 0
7
TC74LCX125FTS1
0
R316 EXCEPT AWX8721
(2/4)
IC331
R333 47 14
6 5
4
R328 100k
7 (3/4)
IC331
14
R334 100 R331
8 9
10
R329 100k
(4/4)
7
IC331
R335 47 14 R332
11 12
13
R330 100k
7 100
C334
AWX8721
C335 0.1/16 YB
ONLY
470p YB
1 16
SEL VCC
R336 100 2 1A 15
ST
R337 100 3 14
4A
1B
R338 47 4 13
FD 4B
BCK
1Y
R339 47 5 12
2A 4Y
R340 100 6 11
2B 3A
MCK LRCK
R341 100 7 10
2Y 3B
8 9
GND 3Y
IC332
TC74LCX157FTS1
V+3DD10
C337
0.1/16 YB
C336
YB
470p
(1/4)
IC333
TC74VHC126FTS1
R344
14
2 3
1
100 7
(2/4)
IC333
R346
14
5 6
4
100 7 (3/4)
IC333
14
9 8
10
7
(4/4)
IC333
14
12 11
13
7
GNDD
O
3/8
2
3
V+3DD6 V+3DD
1
L334
QTL1013
GNDD
CONT
R354 0 IEBD
R353 0 HDBD
ADBD
R355 47
V+3DD7
L335
QTL1013
R360 0 IECD
HDCD
R359 0
ADCD
R361 47
V+3DD8
L331
QTL1013
47
47
AD
V+3DD9 SEL4A
L332
QTL1013
R476
EXCEPT
0
AWX8721 SEL4B
DIFD IEMK
XMFD HDMK
R343 47 DILK
XMLK
R342
47
R475 0
EXCEPT
AWX8721
L333
QTL1013
R345
EDBK
47
IELK
R347
EDMK
HDLK
150
R348
EDLK
47
R349
EDFD
47
HDMI
O
8/8
SC-09TX
3
4
Q
1/3
CN401
2 4 6 8 10 12 14 16 18
3 5 7 9 11 13 15 17
DAX
O
3/8,5/8
V+3DD13
C346
stby
L338
QTL1013
IC338 (1/4)
C347
0.01 YB TC74VHC08FTS1
14
1
R375 47
3
2
IC338
(2/4)
14
4
6 R376 47
5
7
(3/4)
14
9
R377 47
10
7
(4/4)
14
12
R378 47
13
7
HDSD6
C348
C349 stby
QTL1013
0.01 YB
1 16
SEL VCC
2 15
1A
ST
HDSD3 3 14
4A
1B
SD BD
4 13
4B
1Y
R379 47 5 12 R380
2A 4Y
HDSD1
6 11
2B 3A
FD CD
R381 47 7 10
2Y 3B
R382
8 9
GND 3Y
IC339
TC74LCX157FTS1
HDSD4
V+3DD11
C342
C343 0.1/16 YB
QTL1013
470p YB
1 16
X1G VCC
2 15
B X2G
R364 100 3
A 14
1C3
R363 100 4 13
2C3
1C2
MCK XD
R362 47 5 12 R366
1C1 2C2
6 11
1C0 2C1
R365 47 7 10
1Y 2C0
8 9 R367
GND 2Y
IC336
TC74VHC153FT
V+3DD12
C344
C345 0.1/16 YB
QTL1013
470p YB
1 16
X1G VCC
2 15
B X2G
R369 0 3 14
A
1C3
R368 0 4 13 R373
2C3
1C2
LRCK
5 12 R372
1C1 2C2
BCK
6 11 R371
1C0 2C1
R370 47 7 10
1Y 2C0
8 9 R374
GND 2Y
IC337
TC74VHC153FT
4
20 22 24 26
19 21 23 25
GNDD
DDSD
L339
DDBD
47
47 DDCD
DDFD
L336
HDXD
0
47
L337
HDSDCLK
100 IEBK
100 HDBK
100
47
O O
5/8 8/8