Schematic Diagram - NAD VISO 1 Service Manual

SCHEMATIC DIAGRAM

MCU BOARD (1)
F5V +3.3V
R33 1K
LED1
C
R37 4.7K
B
J4
Q1
To PSU J4
BC846B-7-F
E
1 POWER_DOWN
2
F5V
R38 1K
LED2
C
R39 4.7K
B
Q2
BC846B-7-F
E
+3.3V
R22
SPI-SCK-DDFA
10K
SPI-SISO-DDFA
Option Resistor Between
Debugging / Hard Reset +3.3V
IPOD_DETECT
ACC_PWR
R6 0 R21 470
MCLR
IR
C45 C12
TEMP_CH3
TEMP_CH1
0.1u 0.1u
TEMP_CH2
OVERCURRENT
VBUS Overcurrent Detection
+3.3V
R27
4.7K
KEY
RESET
C42
0.01u
25V
+3.3V
+3.3V
J3
1 MCLR
2
3
4 PGD
5 PGC
6
R54 33
C_RESET
R34
10K
R58 33
SEL1
R82
R59 33
10K SEL0
SYNC_UPDATE
+3.3V
C7
10u
1 PMD5/RE5
2 PMD6/RE6
3 PMD7/RE7
4 PMA5/CN8/RG6
5 PMA4/CN9/RG7
6 PMA3/CN10/RG8
7 MCLR
U1
8 PMA2/CN11/RG9
PIC24FJ256GB106
9 VSS9
10 VDD10
11 C1IN+AN5/CN7/R
12 C1IN-/AN4/CN6/
13 C2IN+/AN3/CN5/
14 C2IN-/AN2/CN4/
15 AN1/CN3/RB1
16 AN0/CN2/RB0
+3.3V +3.3V
C6 C5
0.1u 0.1u
1 NC1 15
NC15
10K 10K
R53
2 P4/IRQ U8 14 R55
P3/IRQ
3 NC3 13
P1/IRQ SDA1
R5H30201
4 RES 12
P2/IRQ
SCL1
5 VCC 11
VSS
C33
0.1u
PC_SWITCH
VISO_SWITCH
OE
INT0_AKM
INT1_AKM
INTERRUPT
10K
48 DREQ
SOSCO/T1CK/CN0
R23
47 OE
SOSC1/CN1/RC13
46 SCK_3
OC1/RD0
45 C_RESET C_RESET
IC4/PMCS1/RD11
44 SCL1
IC3/PMCS2/RD10
43 SDA1 SDA1
IC2/SDA1/RD9
42 MOSI_3
IC1/RTCC/RD8
R1
41
VSS41
Y2
8MHz
40
OSC2/CLK0/RC15
12.288MHz
39 1 2 2
OSC1/CLK1/RC12
+3.3V
38
VDD38
37
D+/RG2 C9 C8 C1
22p 22p 27p
36
D-/RG3
35
VUSB
34
VBUS
33
USBID/RF3
C11 C10
0.1u
0.47u
0
R74
ID
UART INTERFACE2
0
R75
VBUS
R76 0
D-
0
R77
D+
SPI-CS-DDFA
UART INTERFACE FOR BT
SPI-CS2
PDN
SPI Control for Slaves
18
1V8
A3V3
C17
0.1u
C16
A3V3
0.1u
13
XDCS
XDCS/BSYNC
14
IOVDD1
15
VCO
16
C14 DGND1
0.1u
17
XTALO
1M
18 U6
XTALI
Y1 19
IOVDD2
VS1053
20
1
DGND2
1V8 21
DGND3
22
C2 DGND4
27p
23
VS_CS
XCS
24
CVDD2
C15
0.1u
TP3
I2S_MCLK
100K 10K 100K
R13 R14 R19
DCD
+3.3V
+3.3V
DTR
DSR SCK_3
RI
R24 0
UART_TX_H
UART_RX_H
UART_RTS_H
UART_CTS_H
AGND
GND
CH0_1_SD
CH0_1_SCK
C18
CH0_1_WS
0.1u
R2 R20
100K 100K
48
LINE2
47
AGND3
46
LEFT
45
AVDD2
44
RCAP
43
AVDD1
42
GBUF
41
AGND2
A3V3
40
AGND1
39
RIGHT
38
AVDD0
37
AGND0
C4 C3
0.1u 1000p
1V8
AGND
C13
0.1u