NAD C 446, Service Manual

Page: 18 / 33

MAINBOARD - 2
C415
470U/25V
C416
1U/16V
DGND
R406
14
K
R409
10
K
DGND
1V2
3V3D
SPI1_MOSI
SPI1_CSn2
AGND AGND
MIX_RST1
DGND
DGND
R412
33R
1V2
SPI1_MISO
SPI1_SCK
DGND
R402
33
R
R401
33R
MM_TX
MM_RX
1V2
1
3V3
2
Ground
3
Ground
4
SCP2_DATA
5
SCP2_CLK
6
GPIOE11
7
GPIOE10
8
S1_DOUT
9
S1_DIN
10
USBDM
11
USBDP
12
Ground(USB)
13
USB VBUS
14
USB_VBUS_FAULT
15
USB_VBUS_DRIVE
16
GPIOB11
17
GPIOG3
18
GPIOB12
19
GPIOG5
20
GPIOB13
21
GPIOG7
22
GPIOB14
23
GPIOG10
24
GPIOB8
25
SPI1_CSn2_SD card
26
SPI1_MISO
27
SPI1_MOSI
28
SPI1_SCLK
29
Ground(SPI)
30
SYS_nRST
31
SPDIFOUT
32
SD_PROTEVT
33
SD_DETECT
34
LCD_M_HSYNC
35
LCD_F_VSYNC
36
LCD_LRS_EN
37
LCD_PE_CLK
38
Ground(LCD)
39
LCD_DAT0
40
LCD_DAT1
41
LCD_DAT2
42
LCD_DAT3
43
LCD_DAT4
44
LCD_DAT5
45
LCD_DAT6
46
LCD_DAT7
47
Ground(I2S)
48
AUD_MCLK
49
AUD_SFR
50
AUD_SCLK
51
AUD_SDOUT0
52
GPIOD4
53
GPIOG15
54
GPIOH4
55
GPIOH3
56
GPIOG13
57
GPIOG11
58
GPIOG8
59
GPIOG14
60
AUDIO_Ground
61
GROUND
62
AUD_R
63
AUD_L
64
JP401
Ethernet_nINT
DGND
DGND
1V2_INPUT
C404
100nF
+
C406
220uF
C405
10uF
C403
47pF
C402
10pF
C401
10pF
3V3_INPUT
C410
100nF
+
C412
220uF
C411
10uF
C409
47pF
C408
10pF
C407
10pF
3V3_INPUT
FB402
600@100MHz
3V3_INPUT
FB401
600@100MHz
LED0
1
PME
2
INTRN
3
D
G
N
D
4
V
D
D
_C
O
1.
8
5
EED_I
O
6
EESK
7
A
G
N
D
8
V
D
D
_A
1.
8
9
EE
C
S
10
RXP
11
RXM
12
A
G
N
D
13
TXP
14
TXM
15
V
D
D
_A
3.
3
16
ISET
17
A
G
N
D
18
RSTN
19
X
1
20
X
2
21
D
G
N
D
22
V
D
D
_D
1.
8
23
D
G
N
D
24
V
D
D
_I
O
25
CSN
26
SO
27
SCLK
28
D
G
N
D
29
V
D
D
_I
O
30
SI
31
LED1
32
Th
em
al
P
ad
33
U407
KSZ8851SNL
DGND
C444
100nF
C443
10pF
3V3D
ETH_RST
1V8 1V8_A
VDD_IO
3V3_A
R415
0
DGND
R421
49R9
R426
49R9
DGND
TD+
2
TD-
3
CT
1
CT
6
RD+
4
RD-
5
G
N
D
11
G
N
D
12
SHIELD
J2 TX-
J1 TX+
J6 RX-
J3 RX+
J4
J5
J7
J8
9
8
7
10
Gr
Ye
Lt
Rt
G
N
D
13
G
N
D
14
Or
J402
JP011821UNL
C457
100nF
R433
49R9
R435
49R9
DGND
C461
100nF
DGND DGND
R437
470
R434
3.
01
K
ACT
DGND
C466
22pF
C465
22pF
DGND DGND
1 2
X401
GSX49-4
25MHz
3V3D
R416
O
PE
N
FB404
600@100MHz
C435
100nF
C434
10nF
FB406
600@100MHz
C440
100nF
3V3D
DGND
3V3_A
3V3D
DGND
C439
10nF
VDD_IO
TP403 VDD_IO401
FB403
600@100MHz
DGND
C432
100nF
C431
10nF
TP402
DGND
C428 C430
TP401 1V8 1V8_A
R419
33
R420
33
R422
33
R424
33
SPI1_SCK
SPI1_MOSI
SPI1_CSn2
R428
33
R431
33
R427
OPEN
R417
OPEN
3V3D
R438
470
C446
Ethernet
1 2
R436
10K
3V3D
DGND
C429
10uF
C433
10uF
C441
10uF
C436
10uF
LINK
3V3D
C462
10uF
C442
10uF
D402
BAT54
FB407
600@100MHz
3V3D
C452
100nF
C453
10uF
FB408
600@100MHz
3V3D
DGND
C463
100nF
C464
10uF
Ethernet_nINT
SPI1_MISO
Ethernet_MISO
SPI1_CSn2
C437
100nF
C438
10uF
DGND
3V3D
FB405
600@100MHz
/oe
1
a
2
gnd
3
y
4
vcc
5
U406
74LVC1G125GV
DGND
3V3D
DGND
C456
4.7uF
C455
4.7uF
D401
SS36B
R
42
3
N
P
R
43
0
N
P
C454
10nF
C460
10nF
R
42
9
O
PT
C445
100nF
L401
6.8uH
C446
47uF
C451
47uF
R
41
8
10
.2
K
R
42
5
3.
24
K
R
43
2
29
.4
K
C458
1nF
C459
47pF
C449
100uF
C447
100nF
DGND
DGND
DGND
DGND
8VD
C450
100uF
C448
100nF
3V3D
BOOT
1
VIN
2
EN
3
SS
4
VSNS
5
COMP
6
GND
7
PH
8
U408
TPS54331
L402
6.8uH
Ethernet_nINT
ETH_RST
MIX_RST1
R411
33R
R413
33R
R414
33R
MM_MCK
MM_BCK
MM_LRCK
MM_DATA
R407
33R
MM_SPDIF
GND
2
S4
6
S3
4
S2
3
S1
1
VCC
5
U401
RCLAMP0504F
C414
100nF
USB_DP
USB_DM
DGND
VUSB
DGND
+5VD
C417
100nF
DGND
USB_DM
USB_DP
DGND
VUSB
VBUS
1
USB_DN
2
USB_DP
3
GND
4
SHIELD
5
SHIELD
6
J401
USB A Type
IN
1
IN
2
FAULT
8
GND
4
OUT
7
OUT
6
ON
3
SET
5
U403
AAT4601
R410
2K
C421
47
uF
C418
100nF
R408
OPEN
VUSB
R405
33R
DGND
DGND
+5VD
R403
33R
USB_VBUS_FAULT
USB_DP
USB_DM
MM_SPDIF
MM_LRCK
MM_DATA
MM_BCK
MM_MCK
C425
4.7uF
C424
4.7uF
C423
10nF
DGND
8VD +5VD
C427
100uF
C426
100nF
C413
22U/25V
VOUT
1
VOUT
2
ADJ
3
GND
4
EN
5
NC
6
VIN
7
VIN
8
U402
ADP125ARHZ-R7
R404
100K
C420
470pF
C419
100nF
3V3_INPUT
Vin
1
G
N
D
2
Vout
3
U405 LM7805
Heatsink
HS401
For U405
DGND
DGND
MM_TX
MM_RX
RESET
1
RESET
3
G
N
D
2
MR
4
V
D
D
5
U404
TPS3825-33
DGND
C4241
22nf
C4242
22nf
C4243
22nf
C4244
22nf
C4246
22nf
C4247
22nf
C4248
22nf
R4241
10R
R4242
10R
R4243
10R
R4244
10R
R4246
10R
R4247
10R
R4248
10R
AGND
DGND
DGND
232GND
C4245
22nf C4249
22nf
DGND
DGND
EMI CAP
C1000
22nf
C1001
22nf
C1002
22nf
C1003
22nf
R1000
0R
R1001
0R
R1002
0R
R1003
0R
AGND DGND
R6580A
0R
R6580B
0R
R6581A
0R
R6581B
0R
R4002
NC
R4001
NC
R4005
NC
R4004
NC
R4003
NC
R4006
NC
C4017
NC
C4018
NC
C4020
NC
C4019
NC
DGND
DGND
DGND
DGND
Frontier Venice 6.2
DAB/INTERNET RADIO
Page 18