NAD M5 C/AH Service Manual - page 38
7. AUDIO BOARD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
JP6
0
3
FFC
S
M
T
F
R
O
M
DECO
RD
BOAR
D
IN
U605
LM
317
R624
240R
1%
C635
100N
C633
10uF
/25V
C624
10uF
/16V
+12V
+V
C
C
A
R625
240R
1%
R627
2K
1 1%
C636
100N
C634
10uF
/25V
C625
10uF
/16V
-1
2
V
-V
C
C
A
IN
U606
LM
337
S1
+
S2
-
D611
DB104
1
2
3
4
5
JP6
0
5
C627
100N
C628
100N
C626
2200U/
25V
C610
2200U/
25V
R784
0R
R782
0R
-V
C
C
A
+V
C
C
A
S1
+
S2
-
D612
DB104
C609
1000U/
10V
C605
100N
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
JP6
0
6
CO
N20
Q6
2
1
K
S
C2690
Q6
2
3
KSA1
2
2
0
Q6
1
9
KSA1
2
2
0
R626
2K
1 1%
R789
33K
Q6
2
2
2S
A
1015
R786
2.
2K
R788
1K
R787
9.
1K
Q6
2
0
2S
C1815
R791
10K
R790
4K
7
5V
D
Q6
2
4
2SC3326
R793
4K
7
R792
10K
R794
4K
7
C646
10UF
/16V
C647
10UF
/16V
C719
22N/
100V
C718
22N/
100V
VCO
MC
EAUX
3
3
DAC_CS
H_DSAML
H_DSMR
H_DBCKP
TW
S
TSD
3
TBC
K
MCLK
SCL
SDA
R600
0R(NC)
DSDL
1
DSDR
2
DBCK
3
PL
R
C
K
4
PDA
T
A
5
PB
C
K
6
SC
K
7
DG
ND
8
VDD
9
AD
R
0
10
AD
R
1
11
SC
L
12
SDA
13
RS
T
14
VCC2
R
15
AGN
D
3
R
16
IO
U
T
R
+
17
IO
U
T
R
-
18
AGN
D
1
19
IR
E
F
20
VCOMR
21
VCOML
22
VCC1
23
AGN
D
2
24
IO
U
T
L
+
25
IO
U
T
L
-
26
AGN
D
3
L
27
VCC2
L
28
U604
DSD1794
R628
10K
3.3V
D
C619
10UF
/16V
5V
A
C620
10UF
/16V
5V
A
C621
10UF
/16V
3.3V
D
C622
10UF
/16V
5V
A
R641
750R
R644
750R
C644
1N5
C629
10N
C630
10N
R613
47R
R614
47R
R606
10K
R604
10K
R607
10K
+12V
-1
2
V
C631
10N
C632
10N
GND
V+
V-
VO
VEE
VCC
GND
V+
V-
VO
VEE
VCC
LO
W
N
O
IS
E
D
R
IV
E
R
NA
D
J6
0
3
M5
MO
D
U
L
E
R639
750R
C645
8N2
C602
10N
R637
750R
R640
750R
C643
1N5
R638
750R
C642
10N
+12V
-1
2
V
R601
750R
R603
750R
C608
1N5
+12V
-1
2
V
GND
V+
V-
VO
VEE
VCC
GND
V+
V-
VO
VEE
VCC
LO
W
N
O
IS
E
D
R
IV
E
R
NA
D
J6
0
4
M5
MO
D
U
L
E
R602
750R
C606
8N2
C607
10N
R642
750R
R645
750R
C604
1N5
R643
750R
C601
8N2
C603
10N
+12V
-1
2
V
C616
1UF
C612
47UF
/16V
C615
1UF
C611
47UF
/16V
C617
1UF
C613
47UF
/16V
R608
10K
C618
1UF
C614
47UF
/16V
L+
L-
R+
R-
P6
0
9
LCH
UNBAL
O
UT
P
UT
P6
1
0
RCH
UN
BAL
O
UT
P
UT
R631
220K
R632
220K
C638
220P
C637
220P
C787
100N
C788
100N
1
2
3
4
JP6
0
7
FROM DECODE BOARD
5V
D
3.3V
D
STB
1
2
3
P6
0
5
LCH
BAL
O
UT
P
UT
1
2
3
P6
0
6
RCH
BAL
O
UT
P
UT
R611
47R
R612
47R
C639
10U/
10V
C706
100N
C710
100N
C711
100N
C713
100N
C712
100N
C714
100N
C715
100N
C716
100N
C717
100N
+12V
-12V
D605
12V
D606
12V
D607
12V
D608
12V
D609
12V
D610
12V
D613
12V
D614
12V
Q6
2
6
2SC3324
R652
120
R648
10K
-1
2
V
C640
10U/
10V
C707
100N
Q6
2
8
2SC3324
R647
121
R646
10K
-1
2
V
C648
22U/
10V
C708
100N
Q6
3
0
2S
C3324
R658
121
R657
10K
-1
2
V
C649
22U/
10V
C709
100N
Q6
3
2
2SC3324
R654
121
R653
10K
-1
2
V
C641
8N2
2
3
1
8
4
U601A
A
D
8672
6
5
7
U601B
A
D
8672
2
3
1
8
4
U602A
A
D
8672
6
5
7
U602B
A
D
8672
R615
910
R616
910
R618
910
R619
910R
Q6
2
5
2SC3324
Q6
2
7
2SC3324
Q6
2
9
2SC3324
Q6
3
1
2SC3324
+12V
+12V
+12V
+12V
+12V
-1
2
V
+12V
-1
2
V
C720
100N
C722
100N
C721
100N
C723
100N
C726
2N7
C727
2N7
C728
2N7
C729
2N7
1
3
2
RL601A
HF
D3
4
6
5
RL601B
HF
D3
1
3
2
RL602A
HF
D3
4
6
5
RL602B
HF
D3
Q6
1
0
2SC1815
R605
47K
mute
GN
D
R
Q6
0
9
2SC1815
R609
47K
+12V
C686
220P
C698
2N2
R610
9K
1
7
8
RL602C
+12V
D603
1N4148
GN
D
R
2ch mute
Q6
1
1
2SC1815
C732
2N2
R617
9K
1
7
8
RL601C
+12V
D604
1N4148
R623
43k
R621
43k
R620
43k
R622
43k
mute
R738
2K
2
Q6
6
4
8550
Q6
6
2
8550
D650
IN
4148
D651
IN
4148
R748
100K
R749
100K
R747
4k
7
R737
47K
D652
IN
4148
R751
4K
7
C724
47UF
/6.
3V
-1
2
V
R739
100R
-1
2
V
Q6
6
3
2SC1815
R750
4K
7
RST
MUTE CIRCULT
C725
220UF
/25V
Q6
6
6
2SC1815
MUTE0
R797
4K
7
Q6
0
3
2SC1815
R633
10k
5V
D
R629
0R
R630
NC
vmute
5
6
7
U653B
O
P
A2134UA
R695
1K
R672
1K
8
R659
2K
2
C650
2200P
R683
9K
1
C663
130P
R673
1K
8
R660
2K
2
C656
2700P
R696
1K
R687
9K
1
C668
130P
R714
150R
FR
OU
T
V+
V-
3
2
1
8
4
U653A
O
PA2134UA
R697
1K
R671
1K
8
R661
2K
2
C651
2200P
R684
9K
1
C664
130P
R674
1K
8
R662
2K
2
C657
2700P
R698
1K
R686
9K
1
C669
130P
R713
150R
FL
OU
T
V+
V-
3
2
1
8
4
U654A
O
PA2134UA
R699
1K
R675
1K
8
R663
2K
2
C652
2200P
R685
9K
1
C662
130P
R676
1K
8
R664
2K
2
C658
2700P
R700
1K
R690
9K
1
C670
130P
R717
150R
SUB
5
6
7
U654B
O
PA2134UA
R701
1K
R677
1K
8
R665
2K
2
C653
2200P
R688
9K
1
C665
130P
R678
1K
8
R666
2K
2
C659
2700P
R702
1K
R691
9K
1
C672
130P
R719
150R
RSO
U
T
V+
V-
3
2
1
8
4
U655A
O
P
A2134UA
R703
1K
R679
1K
8
R667
2K
2
C654
2200P
R689
9K
1
C666
130P
R680
1K
8
R668
2K
2
C660
2700P
R704
1K
R693
9K
1
C671
130P
R718
150R
LS
O
U
T
5
6
7
U655B
O
PA2134UA
R705
1K
R681
1K
8
R669
2K
2
C655
2200P
R692
9K
1
C667
130P
R682
1K
8
R670
2K
2
C661
2700P
R706
1K
R694
9K
1
C673
130P
R723
150R
CEN
+12V
+12V
+12V
-12V
-12V
-12V
R724
150R
R722
150R
R721
150R
R720
150R
R716
150R
R715
150R
C680
330N
C681
330N
C682
330N
C683
330N
C684
330N
C685
330N
R708
10K
R707
10K
R710
10K
R709
10K
R711
10K
R712
10K
C674
47uF
/16V
C675
47uF
/16V
C676
47uF
/16V
C677
47uF
/16V
C678
47uF
/16V
C679
47uF
/16V
Q6
5
0
2SC3326
Q6
5
2
2SC3326
R727
4K
7
R725
4K
7
mute
Q6
5
1
2SC3326
Q6
5
3
2SC3326
R728
4K
7
R726
4K
7
mute
Q6
5
4
2SC3326
Q6
5
7
2SC3326
R732
4K
7
R729
4K
7
mute
Q6
5
5
2SC3326
Q6
5
8
2SC3326
R733
4K
7
R730
4K
7
mute
Q6
5
6
2SC3326
Q6
5
9
2SC3326
R735
4K
7
R731
4K
7
mute
Q6
6
0
2SC3326
Q6
6
1
2SC3326
R736
4K
7
R734
4K
7
mute
1
2
5
6
9
10
11
12
7
8
3
4
P6
5
0
M
ULT
ICHANNEL
O
U
T
PUT
FR
OU
T
FL
OU
T
RSO
U
T
LSO
U
T
SUB
CEN
C768
220P
C769
220P
C770
220P
C771
220P
C772
220P
C773
220P
R768
220K
R769
220K
R770
220K
R771
220K
R772
220K
R773
220K
D655
12V
D661
12V
D656
12V
D662
12V
D657
12V
D663
12V
D658
12V
D664
12V
D659
12V
D665
12V
D660
12V
D666
12V
R775
75R
C794
470P
C795
470P
FB
6
0
3
2.
4UH
D653
1N6263
D654
1N6263
1
2
3
4
P6
5
1
OS
D
O
U
T
P
U
T
5V
D
2
7
R651B
0R
1
8
R651A
0R
4
5
R651D
0R
3
6
R651C
0R
C688
100N
LOUT1-
1
LOUT1+
2
DZF3
3
DZF2
4
DZF1
5
CAD0
6
ACKSN
7
PDN
8
BICK
9
MCLK
10
DVDD
11
DVSS
12
SDT
I4
13
SDT
I1
14
SDT
I2
15
SDT
I3
16
LR
C
K
17
I2
C
18
CCL
K
/S
CL
19
CDT
I/S
DA
20
CSN/
CA
D1
21
DCL
K
22
DSDL
4
23
DSDR4
24
DSDL1
25
DSDR1
26
DSDL2
27
DSDR2
28
DSDL3
29
DSDR3
30
DIF0
31
ROUT4-
32
ROUT4+
33
VREFH
34
AVDD
35
AVSS
36
LO
U
T
4
-
37
LO
U
T
4
+
38
ROUT
3
-
39
ROUT
3
+
40
LO
U
T
3
-
41
LO
U
T
3
+
42
ROUT
2
-
43
ROUT
2
+
44
LO
U
T
2
-
45
LO
U
T
2
+
46
ROUT
1
-
47
ROUT
1
+
48
U652
A
K
4358
5V
D
4
5
R655D
0R
2
7
R655B
0R
1
8
R655A
0R
3
6
R655C
0R
LS+
LS-
FR
+
FR
-
FL
+
FL
-
SW
-
SW
+
RS-
RS+
C-
C+
DIF0
5V
A
R740
10K
R650
0R
C784
100N
R798
0R
H_DBCKA
H_DSALS
H_DSARS
H_DSAC
H_DSASW
H_DSAL
H_DSAR
H_DCLK
TX
D
RX
D
+12V
_O
/F
TR
IG_
O
/F
IR
IN
SPDIF
H_DCLK
H_DBCKA
H_DSARS
H_DSALS
H_DSASW
H_DSAC
H_DSAR
H_DSAL
MUTE0
RST
MC
EAUX
3
3
DAC_CS
2
Channel
A/
D
convert
5V
A
C690
100N
+12V
-1
2
V
C689
100N
C692
100N
+12V
-1
2
V
C691
100N
C694
100N
+12V
-12V
C693
100N
C699
10UF
/16V
C782
100N
C785
100N
C786
100N
5V
D
5V
D
5V
D
C780
100N
3.3V
D
C781
10UF
/16V
3.3V
D
R757
1R
C792
100N
H_DSAML
H_DSMR
H_DBCKP
TW
S
TSD
3
TBC
K
MCLK
SCL
SDA
RST
RST
Eight
channel
D/
A
convert
VM
XM6
5
0
XM6
5
3
XM6
5
2
B6
5
0
100N
B6
5
1
100N
B6
5
3
100N
-V
C
C
A
+V
C
C
A
1
2
3
4
5
6
JP6
0
4
FROM SWITCH PSU BOARD
3.3V
D
5V
D
F
B
602(
NC)
FE
R
B
1
R754
68R
R755
330R
C696
100N
R756
91R
5V
D
Fi
b
e
r
O
p
tic
TX
M
o
d
u
le
TOP
VIEW
GN
D
VCC
VIN
DRI
V
ER
IC
1
2
3
P6
5
3
SPDI
F
O
U
T
PUT
(O
PT
IC
AL
)
1
2
3
4
P6
5
2
SPDI
F
O
UT
P
UT
(CO
A
X
IA
L)
R758
1M
C695
100N
R752
10M
SPDIF
R742
33R
11
10
U656E
74HCU04
13
12
U656F
74HCU04
1
2
14
7
U656A
74HCU04
9
8
U656D
74HCU04
VCC
1A
2A
GN
D
1Y
1Z
2Y
2Z
U659
UA9638C
C697
100N
R743
33R
1
2
3
4
5
6
7
8
T6
5
0
DI
G
IT
A
L
S
IG
NAL
T
RANSF
O
RM
ER
R760
56R
5V
D
1
2
3
P6
5
4
AES/EBU
R759
56R
C700
10UF
/16V
C701
10UF
/16V
C705
47P
5V
D
R803
47K
VCO
5V
A
5V
A
R746
10k
R745
330
R744
47K
IR
IN
EX
T
IR
Q6
6
5
2S
C1815
R741
33R
R763
10K
TR
IG_
O
/F
R765
10K
R766
10k
Q6
6
7
2S
C1815
R764
15k
C791
10N
R774
10K
1
2
3
4
5
6
JP6
0
1
TO
23
2
BOARD
R778
10R
R780
0R
R779
0R
/EN
1
C1
+
2
V+
3
C1
-
4
C2
+
5
C2
-
6
V-
7
RI
N
8
ROUT
9
/I
N
V
10
DI
N
11
FC
O
N
12
DOUT
13
GN
D
14
VCC
15
/F
C
O
F
F
16
U83
M
A
X
3221
C775
100N
C777
100N
C776
100N
C778
100N
C774
100N
R795
0R
R796
0R
RX
D
TX
D
TXD
1
RXD1
5V
D
5V
D
5V
D
+12V
_O
/F
232 AND IR INTERFACE
PO
W
ER
SUPLY
C702
100N
5V
A
R777
10R(NC)
R776
10R
+5V
+12V
C623
10UF
/16V
VM
G
1
OUT
2
IN
3
O
4
U658
A
M
S
1117-
5.
0
C704
100N
5V
A
C687
10UF
/25V
C703
10UF
/16V
5V
A
VM
ANALOG AUDIO OUTPUT
DIGITAL AUDIO OUTPUT
OSD
FRO
M
SW
ITCH
PO
W
ER
BO
ARD
M5
R-
T
Y
PE
TR
A
N
SF
O
R
M
E
R
C/
A
H
1 2 3 4 5
1 2
2
AMP
PER
MODUL
E
2
AMP
PER
MODUL
E
ESD
p
ro
tect
L
ow
le
aka
ge
d
iod
e
ESD
p
ro
tect
L
ow
le
aka
ge
d
iod
e
C
730
100N
D616
12V
D615
12V
D618
12V
D617
12V
D602
2V
D601
2V
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
GND
7
VCC
14
3Y
8
3A
9
3B
10
4Y
11
4A
12
4B
13
U607 74HC
86
R634
16.
5K
C735
10UF
/16V
C734
100N
Q6
6
8
2S
C1815
R6
3
5
10K
R63
6
10
K
5V
D
C
733
100P
D619
1N4148
2006-
2-
6
R7
9
9
10k
3-30
3-31