4.232_TRIG BOARD
19
D
JQG
D
\
YFF
\
U9300
NC7WZ17
C9 3 0 2
47N
R9 3 0 2
2K2J
0 * 1 '
trig in
C9 3 0 6
1 0 0 n
R9 3 10
10KJ
R9 3 11
6k
8
D9 3 0 3
4 v7
D9 3 0 4
4 v7
C9301
100n
R
9
304
10K
C1+
V +
C1-
C2+
C2-
9
Ri n-
Rout
,19
T i n
Fon
T out
gnd
V cc
Foff
16
E N
U9 3 0 2
MAX3221
C9 3 10
1 0 0 n
C9 3 0 7
470nZ
C9 3 14
4 7 0 n Z
C9 3 1
4 7 0 n Z
C9 3 0 9
1 0 0 n
DGND
DGND
DGND
1
2
3
C9313
EMI 1 0 0 p
1
2
3
C9312
EMI 1 0 0 p
Tx d a
Rxda
*
G2
J9302
RS232
C9 3 0 8
22u/ 6.3 v
R9 3 13
10RJ
MGND
MGND
DGND
C9300
22u/6.3v
DGND
R9314
120R
R9301
120R
R9303
120R
TPG9 3 0 0
input1
C9304
22N
'
66
'
66
MGND
DGND
R9 3 0 0
10RJ
C9311
10U/10V
232TX
232RX
IRE
TRI GIN
R9 3 0 7
47KJ
TRI GON_OFF
D
JQG
D
\
YFF
\
U9301
NC7WZ17
C9 3 0 3
100n
R9 3 12
120R
' * 1 '
R9 3 0 9
120R
J9300A
SCJ351P00WS0B00G
DGND
D9 3 0 5
4 v7
R9 3 0 8
47KJ
D9300
1SS352
R
9
305
1K
DGND
3V 3T
L 9300
FB
C
9 3 0 5
1
0 U / 1 0 V
J9301
T O FPP
T RI GO N _ O F F
T RI GIN
2 3 2 T X
2 3 2 RX
IR E
D G N D
3V3
T
3V 3T
3V3T
R9306
10R
DGND
D G N D
' $ 7$
1
9 &&
2
* 1 '
OP9300
GP1FTX
J9303
R9315
226R
R9
31
6
115
R
opt out
coax out
C9325
100N X7R
AGND
C9320
22P
L9302
FB
TX+
TX-
L9301
FB
C9324
22u/ 6V3
R9
31
7
110
R
R9319
33R
R9318
33R
AGND
C9330
100N X7R
1IN +
1OUT
2OUT
GND
2IN -
2IN +
1IN -
V CC
U9305
SN75157
J9304
FROM AUDIO
5V
C9321
10U/10V
C9322
10U/10V
C9323
22N
AGND
5V
*
1
287
2
,1
3
2
4
U9304
TLV1117-3V3
5V
C9316
10U/10V
C9317
10U/10V
C9318
10U/10V
AGND
AGND
AGND
3V3
3V3
3V3
AGND
C9319
22n
D
JQG
D
\
YFF
\
U9303
NC7WV17
3V3
AGND
AGND
AGND
AGND
J9305B
J9305A
S U B R
S U B L
1
2
3
4
FROM AUDIO
C9327
220P
C9328
220P
C9326
1
R9320
100R
D9306
1SS352
D9307
1SS352
MGND
MGND
R9321
0R
R9322
0R
-
,5,1
DGND
&
100n
1
3
4
2
T9300
SPDIF 1: 1 B
J9300B
SCJ351P00WS0B00G
R9324
100R
R9323
15R
DGND
R9325
3R9J
0 * 1 '
Q9300
KSC2690
D9309
12V
C9333
10U/ 25V
D9308
BAV99
C9332
100n
R9326
4K
7
C9331
10U/ 25V
Summary of Contents for M12
Page 1: ...NAD SERVICE MANUAL DIGITAL PREAMP DAC DIGITAL PREAMP DAC...
Page 6: ...6 Wiring diagram...
Page 29: ...1 AUDIO BOARD 29 PCB LAYOUT Top Layer Bottom Layer...
Page 30: ...2 MDC BOARD 30 Top Layer Bottom Layer...
Page 31: ...31 3 MDC DIGTAL IO BOARD Bottom Layer Top Layer...
Page 32: ...32 4 232_TRIG BOARD Bottom Layer Top Layer...
Page 33: ...33 5 BOOTLOAD BOARD Bottom Layer Top Layer 6 ENCODER BOARD Bottom Layer Top Layer...
Page 34: ...34 7 TOUCH KEY BOARD Bottom Layer Top Layer 8 LED BOARD Bottom Layer Top Layer...
Page 35: ...35 9 FPP BOARD Bottom Layer Top Layer...
Page 36: ...36 10 USB XMOS BOARD Bottom Layer Top Layer...
Page 37: ...37 11 PSU BOARD Top Layer Bottom Layer...
Page 38: ...38 12 ANA BOARD Top Layer Bottom Layer...
Page 39: ...39 13 PHONO BOARD Top Layer Bottom Layer...
Page 40: ...4 14 HTRM2 BOARD Top Layer Bottom Layer...
Page 68: ...68...
Page 70: ...70...