NAD C446 Service Manual page 18

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