Ir Buffer Assy - Pioneer SC-LX85 Service Manual

1

10.26 IR BUFFER ASSY

IR BUFFER ASSY
O
A
(AWX9793)
CN6801
PRESEL7
23
V+7_A
22
21
V-7_A
NC
20
B GNDA
19
SR OUT 18
GNDA
17
SL OUT
16
GNDA 15
FR OUT 14
GNDA 13
Z
CN6951
C OUT 12
GNDA 11
FL OUT 10
GNDA
9
FH/FW R OUT 8
GNDA
7
FH/FW L OUT 6
GNDA
5
SB R OUT 4
GNDA
3
SB L OUT 2
GNDA
1
C
XKP3082-A
D
PRESEL7
H:FW
L:FH
E
F
O
144
1
2
V+7_A
V-7_A
GNDA
V+7_A
IC7491
TC4053BFN
16 1
VDD 1Y
15 2
Y-COM 0Y
14 3
X-COM 1Z
13 4
1X Z-COM
12 5
0X 0Z
11 6
A INH
10 7
B VEE
9 8
C VSS
V-7_A
GNDA
R7496
NM
R7497
NM
2
3
R6902
C6906
GNDSBL
R6903
100
R6862
C6866
GNDSL
R6863
100
R7452
10K
1%
GNDFHL
GNDCH1
R7464
R7453
10K
100
1%
GNDC
R6814
100
R6842
R6852
10K
1%
NM
GNDFR
R6853
GNDCH1
R6854
R6843
NM
10K
100
1%
SC-57
3
4
V+12SBL
R6909
SBL
0
C6903
NM
R6912
R6906
39k 1%
NM 2
8
R6910
1
GNDCH1
4.7
IC6901
4
0 3
UPC4570G2-A
(1/2)
330p/50
IC6901
CH
UPC4570G2-A
5
(2/2)
R6911
4.7
7
R6913
6 R6907
39k 1%
NM
C6904
GNDCH1
NM
0
R6908
V-12SBL
V+12SL
R6869
0
C6863
SL
NM
R6872
R6866
39k 1%
2
NM
8
R6870
1
GNDCH1
4.7
4
3
0
(1/2)
UPC4570G2-A
IC6861
(2/2)
330p/50
IC6861
CH
UPC4570G2-A
5
R6871
7 4.7
R6873 6 R6867
39k 1%
NM
C6864
NM
GNDCH1
0
R6868
V-12SL
V+12FHL
R7459
0
C7453 FHL
NM
R7456
39k 1%
2
8
R7460
1
R7462
4.7
4
3
NM
(1/2)
UPC4570G2-A
IC7451
(2/2)
IC7451
R7463 UPC4570G2-A
5
R7461
NM
4.7
7
6 R7457
39k 1%
C7454
NM
0
R7458
V-12FHL
V+12C
R6809
0
C6803
C
NM
R6806
R6802 39k 1%
2
8
R6810
1
R6812
10K
1% 4.7
4
NM 3
(1/2)
UPC4570G2-A
IC6801
(2/2)
IC6801
R6813 UPC4570G2-A
5
GNDCH1
R6811
R6803
NM
4.7
7
10K 6 R6807
1%
39k 1%
C6804
NM
0
R6808
V-12C
V+12FR
R6849
0
C6843 FR
NM
R6846
39k 1%
2
8
R6850
1
4.7
4
3
(1/2)
UPC4570G2-A
IC6841
(2/2)
IC6841
UPC4570G2-A
5
R6851
7 4.7
6 R6847
39k 1%
C6844
NM
0
R6848
V-12FR
4
GN
R6922
0
C6926
33
GNDSBR
CH
R6923
100
GNDCH1
R688
0
C688
GNDSR
R688
100
G
GNDFHR
R7484
100
R6822
R683
10K
1%
NM
GNDFL
R6833
GNDCH1
R6834
R6823
NM
10K
100
1%