NAD T 747, Service Manual

Page: 54 / 130

SCHEMATIC DIAGRAM (XM&TUNER PART)
3-51 3-52
XM_DATA
XM_BCLK
XM_LRLK
XM_MCLK
D-
D+
GND
LSDP_TXRX
VSS
SC_TX_OUT
VDD
SC_RX_IN
VSS
COMMAND_SEL
VDD
IRQ
VSS
RESET
SLAVE-SEL
CO
M
M
_R
X
_
D
IG
CO
M
M
_T
X
_
D
IG
CO
M
M
_T
X
E
N
VS
S
VD
D
CO
M
M
_R
X
_
P
CO
M
M
_R
X
_
M
VD
D
VS
S
CO
M
M
_T
X
_
M
CO
M
M
_T
X
_
P
VS
S
VSS
OSC_OUT
VDD
OSC_IN
VSS
TEST
VSS
HSDP_DATA
VDD
HSDP_CLK
VSS
HSDP_EN
I2S
_D
A
T
A
VS
S
IS
2_S
CL
K
VD
D
I2S
_L
R
CL
K
VS
S
I2S
_O
CL
K
VS
S
S
A
II_CL
K
VD
D
S
A
II_D
A
T
A
S
A
II_E
N
MCLK
BICK
SDTI
LRCK
PDN
SMUTE
ACKS
DIF0 P/S
AOUTR
AOUTL
VCOM
VSS
VDD
DZFR
DZFL
45.1584MHz
Variable
XM READY PART
AG
N
D DG
N
D
AGND
PLL_DATA
PLL_CLK
PLL_DOUT
DGND
N.C
N.C
+12V
RF_OUT
L_OUT
R_OUT
T_MUTE
PLL_CE
GAIN : 6dB / F.RESPONSE : 44kHz @ -3dB
RDS-DATA
RDS-CLK
PLL-DI
PLL-CLK
PLL-DATA
PLL-CE
STEREO
TUNED
GND
TUNED
STEREO
PLL_CE PLL_DATA
PLL_CLK
Vr
ef
MP
X
IN
V
DDA
V
SSA
FL
O
U
T
CIN
TE
S
T
XO
U
T
RDS
ID/
RDC
L
RDDA RS
T
MO
D
E
V
DDD
V
SSD
XI
N
REA
DY
XM_TXD
XM_RXD
XM_RXD
XM_TXD
IN
PU
T
PA
R
T
V+
5
V
V-5
V
V+
9
V
V+
1.
8V
V+
1.
8V
D+7V
GND
V+7V
V+7V
GND
GND
V-7V
+12V
GND
IN
P
U
T
B
'D<
--
>
M
U
C
&
DS
P
B
'D
D+7V
XM+5.6V
GND GND V+
5
V
GND
D+5V
+7V
-7V
GND
-12V
STBY_MUTE
HDMI+6.5V
12 34
RN342
22*2(U)
C3424
100/
16V
(U
)
C3425 0.
1u
F(
U)
R3417
CRJ10CJ0R0T
0(U)
R3423
OPEN(U)
R3422
OPEN(U)
C3452
10/50V(U)
C3451
10/50V(U)
C3463
0.
022u
(U)
C3464
0.
022u
(U)
R
3463
100(
U)
R
3464
100(
U)
R
3462
100K
(U)
R3
4
6
1
100K
(U)
C3462
10/50V(U)
C3461
10/50V(U)
R
3457
3.
3K
(U
)
R
3458
3.
3K
(U
)
R3453
3.3K(U)
R3454
3.3K(U)
C3455 1500P
(U)
C3456 1500P
(U
)
R3455
2.2K(U)
R3456
2.2K(U) R3460
3.3K(U)
C3460
100P(U)
R3459
3.3K(U)
C3459
100P(U)
V+
B O
U
T
P
U
T
B-
IN
P
U
T
B
+
INPU
T
V-
A+
IN
P
U
T
A-
IN
P
U
T
A O
U
T
P
U
T
-
+
B
-
+
A
8 7 6 5
4 3 2 1
IC343
H
V
IN
JM
2068M
D
T
E
1
(U)
C3453
1000P(U)
C3454
1000P(U)
R
3451
100K
(U)
R
3452
100K
(U)
C3446
10/50V(U)
C3445
0.
1u
F(
U)
C3444
22/
16V
(U
)
C3441
0.1uF(U)
R
3441
10K
(U)
1
2
3
4
5
6
7
8 9
1
01
11
21
31
41
51
6
IC342
CVIA
K
4384VT
(U)
C3412 1
8
p(U
)
C3411
1
8
p(U
)
C3420
0.1uF(U)
C3421
0.1uF(U)
R3420
100(U)
R3421
100(U)
R
3418
1K
(U
)
R
3419
1K
(U
)
C3419
0.
1u
F(
U)
C3423
2
2
p(U
)
C3422 2
2
p(U
)
C3413
1000p
(U)
C3401 1000p
(U)
C3416 1000p
(U)
C3417 1000p
(U)
R
3413
100K
(U)
C3403 0.
1u
F(
U)
R3
4
0
3
100K
(U)
R3
4
0
2
100K
(U)
R3
4
0
1
100K
(U)
C3405
22/16V(U)
L3429
CLZ9Z014Z
C3429
100/
16V
(U
)
2
1
3
GND
Out In
IC344CVIKIA1117S33(U)
L3426
CL
Z
9
Z
014Z
C3427
100/
16V
(U
)
C3426
0.
1u
F(
U)
C3428
0.
1u
F(
U)
1
2
3
4
XM BUS
1 2 3 4
JK341
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37 38 39 40 41 42 43 44 45 46 47 48
IC341
HVIXMDTIC
R
3407
22K
(U)
R
3406
22K
(U)
R
3405
22K
(U)
C3406 0.
1u
F(
U)
C3407 0.
1u
F(
U)
R3404
22K(U)
C3404
0.1uF(U)
C3402
0.1uF(U)
R
3414
22K
(U)
R
3415
22K
(U)
R
3416
22K
(U)
C3414 0.
1u
F(
U)
C3415 0.
1u
F(
U)
C3410
0.1uF(U)
C3409
0.1uF(U)
R3408
22K(U)
R3410 22K(U)
R3409
22K(U)
R3411
100(U)
R3412
1M(U)
876
5
4321
RN341
100§ÙX4(U)
876
5
4
3
21
RN343
22X4(U)
C3408
180P
(U)
L3408
2.
7u
H
(U)
X3401
45.1584MHz(U)
D3429
RB160L60TE25(U)
R3443
0(U)
R
3442
10K
(U)
D
3423
4.
3V
(U
)
D
3422
4.
3V(
U)
C3430
100/
16V
(U
)
L3430
(U)
CLZ9Z014Z
C3721
open
R3721 open
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN
312
TO
TU
N
E
R
M
O
D
U
LE
C3484
470/
16V
14 13 12 11 10 9 8
7 6 5 4 3 2 1
IC351
TC74HCT7007F
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
B
N
303
R3481
10K(T)
C3482
1000P
(T
)
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
IC352
C3480
22P(T)
X
3501
4.
332M
(T
)
R
3482
1K
(T
)
C3483
1000P(
T
)
C3478
560P(T)
C3474
0.
022u
(T
)
C3473
100/
16V
(T
)
C3475
10/
50V
(T
)
R
3483
1K
(T
)
C3481
22P(T)
C3476
330P
(T
)
R
3473
4.
7(
T
)
C3479
0.1uF(T)
C3477
0.1uF(T)
C3472
0.
022u
C3471
100/
16V
R
3471
4.
7
R3444
10K(U)
VOUT
GND
O
N/O
FF
VIN
4
1 2
3
IC362
K
IA
578R
05
R3603
47K
C3603
1000/
16V
C3604
0.
1u
F
VOUT
GND
O
N/O
FF
VIN
4
1 2
3
IC345 CVIKIA278R05PIHA(U)
R3431
47K(U)
C3431 0.
1u
F(
U)
C3432
1000/
16V
3
2 1
4
VIN
VA
D
J
GND
VOUT
IC365
C3612
0.
1u
F
C3611
1000/
16V
C3609 100/
16V
9 8 7 6 5 4 3 2 1
CN146
1
5
1
4
1
3
1
2
1
1
1
0
987654321
CN
561
C3610
0.
1u
F
R
3611
470
R3609
330
R3610
470
D
3431
R
B
160L
60T
E
25(
U)
COMMON
IN OUT
1
2
3
IC364
KIA7809
GND
IN OUT
2
1
3
IC363
KIA7905
VOUT
GND
O
N/O
FF
VIN
4
1 2
3
IC361 CVIKIA278R05PIHA
R3601
47K
C3602
0.
1u
F
C3601
1000/
16V
C3605
1000/
16V
C3606
0.
1u
F
C3607
1000/
16V
C3608
0.
1u
F
C3722
open
R3722 open
R
3604 10K
R
3605
10K
R
3606 15K
1
JW301-1
LAND
1
JW301
LAND
C3614
OP
E
N
C3613
OP
E
N
R3691
0(M-H)
R3692
0(M-L)
R3693
0(T-H)
R3694
0(T-L)
R3695
0(USA)
R3696
0(EUR)
VOUT
GND
O
N/O
FF
VIN
4
1 2
3
IC366
K
IA
578R
05
R3614
47K
3 2 1
CN366
JW
366_1
RED
JW
366_3
WH
IT
E
JW
366_2
BL
A
C
K
C3723
open
R3723
open
C3724 open
R3724
open
C3725
open
R3725 open
R3726 open
AGND
+7V
+5VX
+3V3
+3V3
+3V3
-7V
+5VX
XM+5.3V
XM+5.3V XM+5.3V
XM_RST
XMDAC_MUTE
XMDAC_RST
XM_L
XM_R
TUNER_L
TUNER_R
-7
V
+7
V
DGND
D+5V
-12V
+1
2
V
ST
B
Y
_
M
U
T
E
TUNER_MUTE