NAD T 187 Service Manual page 42

PRE-OUT BOARD (1)
+10.5V +10.5V
C6941 C6943
C6945 C6947
0.1u 47u
U6501-C U6601-C 0.1u 47u
50V 50V
8 NJM5532M 8 NJM5532M 50V 50V
C6942 C6944
4 4 C6946 C6948
0.1u 47u
0.1u 47u
50V 50V
50V 50V
AGND AGND
-10.5V -10.5V
+10.5V +10.5V
C6949 C6951
C6953 C6955
0.1u 47u
U6801-C U6701-C 0.1u 47u
50V 50V
8 8 50V 50V
NJM5532M NJM5532M
C6950 C6952 C6954 C6956
4 4
0.1u 47u 0.1u 47u
50V 50V
50V 50V
AGND AGND
-10.5V -10.5V
J6103B
AGND
+10.5V -10.5V MUTE_POWER
D6903 D6901
GS1G GS1G
D6904 D6902
J6501A GS1G
GS1G
To CONN#1 J6501B
7.1_FL
1
2
3 7.1_FR
4
5 7.1_SL
6
7.1_SR
7
8
9 7.1_SBL
10
7.1_SBR
11
12
13 7.1_SUBW
14
15 7.1_CEN
16
PO_AMP_SBL
17 PO_AMP_SBL
18
19 PO_AMP_SBR
PO_AMP_SBR
20
PO_FL
21
22
23 PO_FR
24
25 PO_SL
26
PO_SR
27
28
29 PO_SBL
30
PO_SBR
31
32
33 PO_SUBW
34
35 PO_CEN
36
F_MUTE
37
38 S_MUTE
39 SB_MUTE
SUBW_MUTE
40
41 C_MUTE
42 SB_AMP_MUTE
DGND
43
MUTE_POWER
44
45 +12V_A
46 -12V_A
AGND
DGND
FOR T187:
R6511,R6522,R6611,R6622,R6711,R6722,R6811,R6822 - 0 ohm
R6510,R6521,R6610,R6621,R6710,R6721,R6810,R6821 - 47k ohm
R6509, R6520, R6609, R6620, R6709, R6720, R6809, R6820 - N.I.
C6530, C6630, C6730, C6830, C6831 - N.I.
U6501-A
C6501 R6506
R6501
NJM5532M C6504 C6507
3 470 R6507
+
1
10u 16V 0 2 -
22u 16V 470 22u 16V
C6502
C6503 D6501
R6502 220p 12V
FRONT L
47k 50V
1/2W
N.I. 50V
Q6501 Q6502
2SC4695 2SC4695
R6509
100k
R6504 0
D6502
R6503 12V
N.I. C6505 C6506
1/2W
R6505 N.I. R6508 N.I.
4.7k 50V 4.7k 50V
AGND
U6501-B
C6508 R6517
R6512 NJM5532M
C6511 C6514
5 470 R6518
+
7
10u 16V 0 6 -
22u 16V 470 22u 16V
C6509
C6510 D6503
R6513
220p
FRONT R 47k 12V
50V
Q6504 1/2W
Q6503
N.I. 50V
2SC4695 2SC4695
R6520
100k
R6515 0
D6504
R6514
N.I. 12V
C6512 C6513
R6516 1/2W
N.I. R6519 N.I.
4.7k
50V 4.7k 50V
AGND
U6601-B
C6601 NJM5532M R6606
R6601
C6604 470 C6607
5 R6607
+
7
0
10u 16V 6 -
470
22u 16V 22u 16V
C6602 C6603 D6601
R6602
220p
12V
SURR L 47k
50V 1/2W
N.I. 50V Q6601 Q6602
2SC4695 2SC4695
R6609
100k
R6604 0
D6602
R6603
12V
N.I. C6605 C6606
R6608 1/2W
R6605 N.I. N.I.
4.7k
4.7k 50V 50V
AGND
U6601-A
C6608 R6617
R6612 NJM5532M
C6611 C6614
3 + 470 R6618
1
0
10u 16V 2 -
22u 16V 470 22u 16V
C6610
C6609 D6603
R6613
220p
SURR R 47k 12V
50V
1/2W
N.I. 50V Q6603 Q6604
2SC4695 2SC4695
R6620
100k
R6615 0
D6604
R6614
12V
N.I.
C6612 C6613
1/2W
R6616 N.I. R6619 N.I.
4.7k 50V 4.7k 50V
AGND
U6701-B
C6701 NJM5532M R6706
R6701
C6704 C6707
5 470 R6707
+
7
0
10u 16V 6 -
470
22u 16V 22u 16V
C6702 C6703 D6701
R6702
220p 12V
SURR-B L
47k
50V 1/2W
N.I. 50V Q6701 Q6702
2SC4695 2SC4695 R6709
100k
R6704 0
D6702
R6703
12V
N.I. C6705 C6706
N.I. R6708 N.I. 1/2W
R6705
4.7k
4.7k 50V 50V
AGND
U6701-A
C6708 NJM5532M R6717
R6712
C6711 470 C6714
3 R6718
+
1
0
10u 16V 2 -
470
22u 16V 22u 16V
C6709 C6710 D6703
R6713
220p 12V
SURR-B R 47k
50V 1/2W
N.I. 50V Q6703 Q6704
2SC4695 2SC4695
R6715 0
D6704 R6720
R6714
12V 100k
N.I. C6712 C6713
N.I. N.I. 1/2W
R6716 R6719
4.7k 50V 4.7k 50V
AGND
U6801-B
C6801 R6806
R6801 NJM5532M
C6804 470 C6807
5 + R6807
7
0
10u 16V 6 -
470
22u 16V 22u 16V
C6802 C6803 D6801
R6802
220p 12V
SUBW 47k
1/2W
50V
Q6801
N.I. 50V Q6802
2SC4695
2SC4695 R6809
100k
R6804 0
D6802
R6803
12V
N.I. C6805 C6806
1/2W
R6805 N.I. R6808 N.I.
4.7k 4.7k
50V 50V
AGND
U6801-A
C6808 R6817
R6812 NJM5532M
C6811 470 C6814
3 R6818
+
1
0
10u 16V 2 -
470
22u 16V 22u 16V
C6809 C6810 D6803
R6813
220p 12V
CENTER 47k
1/2W
50V
Q6803 Q6804
N.I. 50V
2SC4695 2SC4695
R6815 0
D6804 R6820
R6814
12V 100k
N.I. C6812 C6813
1/2W
R6816 N.I. R6819 N.I.
4.7k 4.7k
50V 50V
AGND
22u 16V
R6905
33k
R6906
33k
22u 16V
22u 16V
R6911
33k
R6912
33k
22u 16V
R6511
22u 16V
-10.5V
220
R6917
33k
R6918
33k
R6510 R6548
100k 1M
22u 16V
R6522
22u 16V
220
C6530 MUTE_POWER R6923
33k
C6532
0.1u (0603) R6924
N.I (1000u) 33k
10V
R6521
100k
DGND
Q6505 R6545 22u 16V
DTA114EKA 3.3k
Q6511 Q6512
DTC114EKA DTC114EKA
AGND
DGND DGND
R6611
-10.5V 220
R6610
100k R6648
1M
R6927
0
R6622
220 MUTE_POWER
C6630
R6928
0.1u (0603)
C6632
N.I (1000u)
0
10V
R6621
100k
Q6605
DGND
DTA114EKA R6645
3.3k
R6933
Q6611 Q6612
0
DTC114EKA DTC114EKA
DGND DGND
R6934
R6711
0
-10.5V 220
R6939
0
R6710
R6748
100k
1M
R6940
R6722 0
220 MUTE_POWER
C6730
0.1u (0603)
C6732 R6945
N.I (1000u)
10V 0
R6721
100k N.I.
Q6705 R6943
DGND
DTA114EKA R6745 47k
3.3k
Q6711 Q6712 N.I.
R6944
DTC114EKA DTC114EKA R6946
47k
0
C6933
DGND DGND
R6951
R6811
0
-10.5V -10.5V
220
R6950
47k
R6849
1M
MUTE_POWER
R6850 MUTE_POWER
1M
R6810
100k C6830 C6831
Q6805 0.1u (0603) Q6905 0.1u (0603)
AGND
DTA114EKA DTA114EKA
C6832 C6833
N.I (1000u) N.I (1000u) MUTE_POWER
10V 10V
R6822
R6846
R6845
3.3k
220 3.3k
DGND DGND
D6915 D6910
Q6811 Q6911
DTC114EKA DTC114EKA 0R 0R
1206 1206
R6985 N.I.
R6980 N.I.
R6821 Q6812 Q6912
100k DTC114EKA DTC114EKA
DGND DGND
R6981 N.I.
N.I.
R6982
R6983 N.I.
DGND DGND
R6984 N.I.
C6985 C6980
1000u 1000u
10V 10V
42
C6901
R6901 1k
7
C6903 FRONT L
100p
R6971 0
8 M6501-C
R6902 1k
C6904
9
100p FRONT R
C6902
C6905
R6907 1k
4
C6907 SURR L
100p
R6972 0
5 M6501-B
R6908 1k
C6908
6 SURR R
100p
C6906
7.1 CH INPUT
C6909
R6913 1k
1
C6911 SURR-B L
100p
R6973 0
2
M6501-A
R6914 1k
C6912
3 SURR-B R
100p
C6910
C6913
R6919 1k
1 SUBW
C6915
100p
R6974 0
2
M6502
R6920 1k
C6916
3 CENTER
100p
C6914
CHGND
R6925 L6505 10u
C6919
47k 7
FRONT L
N.I.
50V R6975 0
8 M6503-C
R6926
C6920 L6507 10u
47k
N.I.
9 FRONT R
50V
L6508 10u
R6931
4
47k C6923 SURR L
N.I.
R6976 0
50V
5
M6503-B
R6932
L6510 10u
47k C6924
6 SURR R
N.I.
50V
AUDIO
L6511 10u
R6937 1 SURR-B L
47k C6927
R6977 0
N.I. PRE-OUT
50V 2
M6503-A
L6513 10u
R6938
C6928
47k 3 SURR-B R
N.I.
50V
L6514 10u
1
C6931 R6949 SUBW 2
N.I.
R6978 0
50V
2 M6504
L6516 10u
C6932
3 SUBW 1
50V
C6934
N.I. N.I.
50V 50V L6517 N.I.
L6518 10u
1
C6936 M6505
N.I.
R6979 0
50V 2
CENTER
C6937
N.I.
50V
L6520 N.I.
CHGND
D6911 D6912 D6913 D6914
0R 0R 0R 0R
1206 1206 1206 1206
All values in boxed components are for T777/T787,
for T187, pls refer to the additional info. in the box
C6981 C6982 C6983 C6984
1000u 1000u 1000u 1000u
10V 10V 10V 10V
DGND