NAD Surround Sound Preamp Processor S 170i, Service Manual

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NAD Electronics
This document is proprietary and confidential. Must not be reproduced, copied or used as a basis to manufacture or sale of apparatus or devices without permission.
Design Code: Model No:
Customer Name: Title:
Last Modified: Drawing Created:
Sheet: of
Drawn By: Modified By:
Updated:
Product Code: Version:
Approved By:
C40 100n
C42 100n
+15A
-15A
+15A
R27 10k
TuInL1
AVInL1 AVInL2 AVInL3 AVInL4 CDInL1 AuxInL1 AVInL5 AVInL6
Analog input selection, left channel
AnalogSelect0 AnalogSelect2 AnalogSelect1
C41 100n
C45 100n
+15A
-15A
+15A
R21 10k
Analog input selection, right channel
AnalogSelect0 AnalogSelect2 AnalogSelect1
+15V
1
GND
12
-15V
27
S1
19
S2
20
S3
21
S4
22
S5
23
S6
24
S7
25
S8
26
S16
4
S15
5
S14
6
S13
7
S12
8
S11
9
S10
10
S9
11
A0
17
A1
16
A2
15
En
18
D
28
n.c.
2
n.c.
3
n.c.
13
A3
14
IC4
DG406
+15V
1
GND
12
-15V
27
S1
19
S2
20
S3
21
S4
22
S5
23
S6
24
S7
25
S8
26
S16
4
S15
5
S14
6
S13
7
S12
8
S11
9
S10
10
S9
11
A0
17
A1
16
A2
15
En
18
D
28
n.c.
2
n.c.
3
n.c.
13
A3
14
IC5
DG406
AnalogSelect3
AnalogSelect3
TuInR1
AVInR1 AVInR2 AVInR3 AVInR4 CDInR1 AuxInR1 AVInR5 AVInR6
3 2
1
8 4
IC35A OPA2134
-15A
R135 20k
R141 20k
C196 33pF
R142 100k
C198 100p
C211 100p
+15A
5 6
7
IC35B OPA2134
R134 20k
R151 20k
C195 33pF
R147 100k
C212 100p
Tape In
TapeMon
sw1
1
no1
16
cntrl1
15
V+
11
V-
14
GND
13
Vlogic
12
sw3
3
nc3
4
nc1
2
nc2
7
IC13A MAX303CPE
sw2
8
no2
9
cntrl2
10
sw4
6
nc4
5
IC13B MAX303CPE
+15A
-15A
+5Va
TapeMon
3 2
1
8 4
IC30A OPA2134
-15A
R112 100k
R102 100k
C175 33pF
+15A
5 6
7
IC30B OPA2134
R116 100k
R101 100k
C181 33pF
C166 100n C186 100n
+15A
-15A
ListenR
Tape out (rec) buffers
R113 470R
R114 100k
R128 470R
R129 100k
R99 0R
R100 0R
Left Out
A1
AGND
A2
Right Out
A3
AGND
A4
AGND
A5
AGND
A6
Left Surr. Out
A7
Left Back Out
A8
Right Surr. Out
A9
Right Back Out
A10
Center Out
A11
AGND
A12
Mono/Left Sub Out
A13
Aux Out
A14
AGND
A15
Right Sub Out
A16
Left In
A17
AGND
A18
Right In
A19
AGND
A20
MODULE1B
AC3 MODULE V4
C177 100p C192 100p
C187 100p
Tape Out
SWOut
COut
BOutR
SurOutR
BOutL
SurOutL
sw1
1
no1
16
cntrl1
15
V+
11
V-
14
GND
13
Vlogic
12
sw3
3
nc3
4
nc1
2
nc2
7
IC12A MAX303CPE
sw2
8
no2
9
cntrl2
10
sw4
6
nc4
5
IC12B MAX303CPE
+15A
-15A
+5Va
BypassLR BypassLR
MainOutL MainOutR
C193 100n C204 100n
C83 100n C78 100n
C87 100n C79 100n
Gen6 connection and bypass
Tape in buffering and tape monitor switching
C34
10u/25V
C48
10u/25V
C90 10u/25V
C13 10u/25V
C108
10u/25V
C112 10u/25V
C197 10uF/16V
C210 10uF/16V
C176 10uF/16V
C191 10uF/16V
TapeOutL TapeOutR
TapeOutL TapeOutR
3 5 6 2 4 1
X15 X4RCA
Source Select, Aanlog bypass, Tape In/Out
NAD ELECTRONICS
April. 16. 2001
S170
N0990C
B
5
14
Listen-R
Listen-L
Listen-L
Listen-R
Listen-RListen-R
Listen-R Listen-LListen-L
Listen-L