NAD VISO 1 User manual

NAD
SERVICE MANUAL
VISO 1 & BT
VISO 1 & BT
Wireless Digital
Music System
Wireless Digital Music System
RAFT DATE: 21 OCT 2011

2
SAFETY INFORMATION
3
Contains Contains transmitter module

3
SERVICE SAFETY PRECAUTIONS
1. Replacing the fuses
CAUTION:
FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF
FUSE.
Reference Designator Database Part Number Description
F1 1601100014-902000 FUSE 5*20MM TIME-LAG 2A 250V “ROHS” “WALTER”
TSD2A250V
Parts marked with the symbol are critical with regard to the risk of fire and electric shock.
CONTENTS
DESCRIPTION PAGE
FEATURES AND SPECIFICATIONS......................................................................................................4
REAR VIEW / FRONT VIEW...................................................................................................................5
DISASSEMBLY INSTRUCTIONS ......................................................................................................6 - 8
WIRING DIAGRAM .................................................................................................................................9
WIRING DIAGRAM PARTS LIST..........................................................................................................10
BLOCK DIAGRAM.................................................................................................................................11
SPECIAL KEY PRESSES .....................................................................................................................12
PCB LAYOUT.................................................................................................................................13 - 17
SCHEMATIC DIAGRAM.................................................................................................................18 - 29
ELECTRICAL PARTS LIST............................................................................................................30 - 38
IC BLOCK DIAGRAM.....................................................................................................................39 - 48
EXPLODED VIEW.......................................................................................................................49a-49b
EXPLODED VIEW PARTS LIST ....................................................................................................50 - 51
EXPLODED VIEW - B (DDFA) & PARTS LIST.....................................................................................52
PACKING DIAGRAM.............................................................................................................................53
PACKING PARTS LIST.........................................................................................................................54
APPENDIX.....................................................................................................................................55 - 67
APPENDIX B - WALL MOUNT KITS.....................................................................................................68
APPENDIX C - ITEMS TO CHANGE TO VISO1 BT.............................................................................69

4
FEATURES AND SPECIFICATIONS
Power Rating Total 80W (Sub - 50W, Left – 15W, Right – 15W)
Frequency Response 33Hz – 28kHz (-6dB) Anechoic, 50Hz to 20K ±1dB
Anechoic
Sound Pressure Level (maximum) 100dB
NAD Direct Digital DAC/Amplifier 35 bit/844kHz, 0.005% THD
Bi-amplified System with Digital Crossover
and Volume Control
Digital Soft Clipping™
Bluetooth aptX Wireless Hi-fidelity Receiver 2.4Ghz
Driver Complement 2 x 2.75” Full range drivers with aluminium dome/cone
and dual magnetic drive
1 x 5.75” Subwoofer with symmetrical magnetic drive
Connectivity Optical Digital Input – 32KHz to 96KHz PCM
Component Video Output – Y Pb Pr
USB port for software upgrades
Accessories Remote control model VISO 1
Power Consumption AC Power – 100V to 240V 50/60Hz 35W (1/3 Output
Power)
AC Idle Power – 10W
Net Dimensions (WxHxD) 480mm (18.9”) x 261mm (10.25”) x 300mm (11.8”)
Weight 5.6kg (12.34lbs)

5
1
2
3
4
5
6
97 8
FRONT VIEW
REAR / FRONT VIEW
REAR VIEW
1. POWER BUTTON
2. USB
3. S/PDIF (OPTICAL)
4. COMPONENT VIDEO OUT
5. AC MAINS INPUT
6. S, +/- BUTTONS
7/8. DOCKING CRADLE/CONNECTOR
9. POWER INDICATOR

6
DISASSEMBLY INSTRUCTIONS
1. Push to center of grille assembly to remove.
2. Remove the 4 pcs screws at the back of aluminium ring.
SERVICE ADVISORY
Do not power on or test amplifier section without
a load connected. For example, one should check
all speakers and speaker connections for open
conditions before applying power.
Note the orientation of the grille when installing.

7
3. Remove the 2 pcs M6 screws at the bottom of the unit.
4. Pull out the I/O stand assembly.

8
5. Remove the 2 pcs screws at the back of the ring.
7. Remove tota l of 8 s c rews to open the c a binet. Always replace the old gasket with
a new gasket before assembly to avoid air leakage between the baffle and
cabinet. (Location # 31 Exploded View).
6. Split the ring apart allowing space to form between the ring and cabinet.
Push the ring toward the baffle and place two pieces of lint free cloth between
the ring and cabinet. Carefully remove the ring from the cabinet without
scratching the cabinet.

9
WIRING DIAGRAM
Note page #55
SERVICE ADVISORY
Do not power on or test amplifier section without
a load connected. For example, one should check
all speakers and speaker connections for open
conditions before applying power.

10
WIRING DIAGRAM PARTS LIST
Item Database Part Number Description Remark
1 0600100317-902000 CABLE ASSY UL1015 AWG18 1PIN L=340MM “CONN#1/PSU
GRN/YEL FASTON “ROHS” GND”
2 0600100318-902000 CABLE ASSY UL1007 AWG18 2PIN L=400MM “DDFA BD
RED/BLK FASTON 4.8/2.8 “ROHS” P3”
3 0600100319-902000 CABLE ASSY UL1007 AWG18 2PIN L=600MM “DDFA BD
RED/WHT FASTON 4.8/2.8 “ROHS” P5”
4 0600100320-902000 CABLE ASSY UL1007 AWG18 2PIN L=300MM “DDFA BD
BLK/WHT FASTON 4.8/2.8 “ROHS” P4”
5 0600100375-902000 CABLE ASSY UL1007 AWG18 2PIN 3.96P L=460mm “DDFA BD
“ROHS” P1”
6 0600100315-902000 CABLE ASSY UL1007 AWG28 3PIN 2.5P L=220mm “LED BD
“ROHS” D3W,D3G,D3B”
7 0600100310-902000 CABLE ASSY UL1672 AWG18 4PIN W/O 2/3 PIN “PWR SW BD
3.96P L=320MM BROWN/BLUE “ROHS” JP1”
8 0600100311-902000 CABLE ASSY UL1672 AWG18 1PIN L=260MM “PWR SW BD
BROWN FASTON “ROHS” JP2”
9 0600100312-902000 CABLE ASSY UL2468 AWG26 4PIN 2.5P L=220MM “IR BD
“ROHS” J1B”
10 0600100126-902000 CABLE ASSY UL2651 AWG28 20PIN L=240mm PCB “MCU BD
MOUNT “ROHS” J8”
11 0600100353-902000 CABLE ASSY UL2651 AWG28 20PIN L=320mm PCB “MCU BD
MOUNT “ROHS” J2”
12 0600100379-902000 CABLE ASSY UL1007 AWG20 2PIN 2.5P L=360mm “MCU BD
“ROHS” J1”
13 0600100380-902000 CABLE ASSY UL1007 AWG20 2PIN 2.5P L=300mm “IPOD BD
“ROHS” J1B1 J1B4”
14 0600100359-902000 CABLE ASSY UL1571 AWG30 16/14PIN 1.0P L=300mm “IPOD BD
“ROHS” J2B”
15 0600100383-902000 CABLE ASSY UL1007 AWG18 1PIN GRN/YEL PSU/DDFA BKT
L=400mm W/ RING TERMINAL “RoHS”
16 0600100403-902000 CABLE ASSY UL2468 AWG26 2PIN 2.5P L=640mm MCU/PSU
“RoHS”
17 0600100369-902000 CABLE ASSY UL1533 AWG26x1C 6PIN 2.5P L=580mm “CONN#2
“RoHS” J3A”
18 0600100374-902000 CABLE ASSY UL1007 AWG22 1PIN W/ RING TERMINAL “IPOD BD
“ROHS” SPRING”
19 0600100309-902000 CABLE ASSY UL1533 AWG26X1C 2PIN 2.5P L=320MM “MCU BD
“ROHS” J10”

11
BLOCK DIAGRAM
MCU
PIC24FJ256GB106
AUDIO CODEC VS1053B
SPI
34P
I2S SPI
DIG AUD RECEIVER
AK4117
OPT
20P
MULTIPLEXER SN74LVC257
I2S
BT MODULE BTM511
SPI UART
I2S
I2S
APPLE IC MFI341S2164
I2C
2P
PWR DOWN
4P IR 20P
KEY LED
USB SWITCH FSUSB30
D+/D- D+/D-
D+/D-
2P VBUS
MCU
34P
MODULA TOR ZXCZM800
FEEDBACK PROCESSOR ZXCZA200
SPI I2S I2S
FB 1/2/3 REF 1/2/3
SUB L/CH R/CH
FB 1 FB 2 FB 3 PWM
PWM PWM
2P
DDFA
CONTROLLER
+25V PSU
2P
+25VPOWER DOWN DETECT
UCC28600 FLYBACK
TRANSFORMER
L N
BRIDGE
+
MOSFET STP16NK60Z
-
OPTO-COUPLER CNY17
FB
2P
ADJ REG TL431
O/P VOLTAGE SENSE
4P
IR BD
20P16P
CONN#2
6P
KEY
D+/D-
Y/PB/PR
2P
KEY
CONN#1
6P
20P
20P
KEYBOAD
20P I/O BD
Y/PB/PR
4P
LED
Y/PB/PR USB OPT4P
LED BD iPod BD
14P
Y/PB/PR D+/D-
iPod Conn
STEP-DOWN CONVERTER AP5004VBUS LDO REG. 3.3V / 1.8V
30P 2P 2P 2P
VBUSVBUS
LED OPT
D+/D-
t
SERVICE ADVISORY
Do not power on or test amplifier section without
a load connected. For example, one should check
all speakers and speaker connections for open
conditions before applying power.

12
SPECIAL KEY PRESSES
Action Method Display
Factory Reset Press and Hold Volume LED will turn red and then
Up Key on Power On. flash three times. Viso
One will then continue to
initialize.
Toggle the IR Channel Press and Hold Volume LED will flash three times
Down Key on Power On. for IR Channel 1 and two
times for IR Channel 0.
Change Near/Far Filter 1. Hold down the Sync key LED indication described
for 5 sec. After 5 sec the on the left.
Power indicator flashes
continuously.
2. While Power indicator is
flashing, press Volume Up
to set to far field or Volume
Down to set to near field.
Unit remains in Field Mode
and Power LED remains
flashing.
3. No activity for 5 sec will
default back to normal
mode and power indicator
stops flashing.
Firmware Upgrade 1. Put VisoOne_v1XX.hex LED indication described
onto a USB stick and on the left.
rename it to viso1.hex.
The bootloader searches
for a file called viso1.hex.
2. Connect USB stick to
the USB socket (using an
adapter cable P/N10-00003-ND).
3. Hold SYNC key while
turning on the Viso One. If
it finds a file called
viso1.hex it will blink the
LED as it is upgrading.
When it is done it will
automatically start running
the new code.

13
PCB LAYOUT
MCU BOARD
PSU BOARD

14
DDFA BOARD - COMPONENT SIDE
SERVICE ADVISORY
Do not power on or test amplifier section without
a load connected. For example, one should check
all speakers and speaker connections for open
conditions before applying power.

15
DDFA BOARD - SOLDER SIDE

16
REMOTE BOARD - COMPONENT SIDE
REMOTE BOARD - SOLDER SIDE

17
KEY BOARD - COMPONENT SIDE
KEY BOARD - SOLDER SIDE

18
Option Resistor Between
Debugging / Hard Reset
VBUS Overcurrent Detection
SPI Control for Slaves
UART INTERFACE2
UART INTERFACE FOR BT
1PMD5/RE5
2PMD6/RE6
3PMD7/RE7
4PMA5/CN8/RG6
5PMA4/CN9/RG7
6PMA3/CN10/RG8
7MCLR
8PMA2/CN11/RG9
9VSS9
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
17 PGEC2/AN6/CN24 18 RGED2/AN7/RB7 19 AVDD 20 AVSS 21 AN8/RB8 22 AN9/RG9 23 TMS/CVREF/RB10 24 TDO/PMPA12/RB1 25 VSS25 26 VDD26 27 TCK/PMA11/RB12 28 TDI/PMA10/RB13 29 PMA1/RB14 30 PMA0/CN12/RB15 31 CN17/RF4 32 CN18/RF5
33
USBID/RF3
34
VBUS
35
VUSB
36
D-/RG3
37
D+/RG2
38
VDD38
39
OSC1/CLK1/RC12
40
OSC2/CLK0/RC15
41
VSS41
42
IC1/RTCC/RD8
43
IC2/SDA1/RD9
44
IC3/PMCS2/RD10
45
IC4/PMCS1/RD11
46
OC1/RD0
47
SOSC1/CN1/RC13
48
SOSCO/T1CK/CN0
49
OC2/RD1
50
OC3/RD2
51
OC4/RD3
52
PMWR/CN13/RD4
53
PMRD/CN14/RD5
54
CN15/RD6
55
CN16/RD7
56
VCA P/VDDCORE
57
ENVREG
58
RF0
59
RF1
60
PMD0/RE0
61
PMD1/RE1
62
PMD2/RE2
63
PMD3/RE3
64
PMD4/RE4
U1
PIC24FJ256GB106
1
MICP/LINE1
2
MICN
3
XRESET
4
DGND0
5
CVDD0
6
IOVDD0
7
CVDD1
8
DREQ
9
GPIO2/DCLK
10
GPIO3/SDATA
11
GPIO6/I2SSCLK
12
GPIO7/I2SSDATA
13 XDCS/BSYNC
14 IOVDD1
15 VCO
16 DGND1
17 XTA LO
18 XTA LI
19 IOVDD2
20 DGND2
21 DGND3
22 DGND4
23 XCS
24 CVDD2
25 GPIO5/I2SMCLK 26 RX 27 TX 28 SCLK 29 SI 30 SO 31 CVDD3 32 XTEST 33 GPIO0 34 GPIO1 35 GND 36 GPIO4/I2SLROUT
37
AGND0
38
AVDD0
39
RIGHT
40
AGND1
41
AGND2
42
GBUF
43
AVDD1
44
RCAP
45
AVDD2
46
LEFT
47
AGND3
48
LINE2
U6
VS1053
1NC1
2P4/IRQ
3NC3
4RES
5VCC
6NC6 7NC7 8NC8 9NC9
10 NC10
11
VSS
12
P2/IRQ
13
P1/IRQ
14
P3/IRQ
15
NC15
16
NC16
17
NC17
18
NC18
19
NC19
20
NC20
U8
R5H30201
R21 470 R6 0
R22
10K
C45
0.1u
C12
0.1u
C7
10u
C6
0.1u
C5
0.1u
R23
10K
12
Y2
8MHz
C9
22p
C8
22p
C11
0.47u
C10
0.1u
12
Y1
12.288MHz
C1
27p
C2
27p
R1 1M
C14
0.1u
C15
0.1u
TP3
R13
100K
R14
10K
R19
100K
C13
0.1u
C4
0.1u
C3
1000p
R2
100K
R20
100K
C16
0.1u
C17
0.1u
C18
0.1u
R27
4.7K
R34
10K
C33
0.1u
R24 0
1
2
3
4
5
6
J3
R39 4.7K
E
C
B
Q2
BC846B-7-F
R38 1K
R37 4.7K
C42
0.01u
25V
R74 0
R75 0
R76 0
R77 0
R54 33
R55
10K
R53
10K
R58 33
R59 33
E
C
B
Q1
BC846B-7-F
R33 1K
1
2
J4
To PSU J4
R82
10K
MCLR
IR
+3.3V
+3.3V
+3.3V
PC_SWITCH
OE
OVERCURRENT
RESET +3.3V +3.3V
PGC
PGD
XDCS
VS_CS
MOSI_3
MOSI_3 MISO_3
C_RESET
DREQ
DREQ
OE
SCK_3
C_RESET
SDA1
+3.3V
ID
VBUS
D-
D+
A3V3
1V8
I2S_MCLK
+3.3V +3.3V
1V8
AGND
A3V3
A3V3
1V8
CH0_1_WS
CH0_1_SCK
CH0_1_SD
LED_RED
+3.3V
SCL1
SDA1
C_RESET
+3.3V
SPI-CS2
SPI-CS-DDFA
SCL1
PDN
GND
AGND
MCLR
PGD
PGC
+3.3V
XRESET
F5V
LED1
LED2
KEY
SEL1
SEL0
RI
DSR
DTR
DCD
UART_RX_H
UART_TX_H
ACC_PWR
INTERRUPT
IPOD_DETECT
SCK_3
SDA1
UART_CTS_H
UART_RTS_H
INT0_AKM
SPI-SCK-DDFA
SPI-SISO-DDFA
TEMP_CH1
TEMP_CH2
SYNC_UPDATE
LED_BLUE
F5V
INT1_AKM
TEMP_CH3
+3.3V
POWER_DOWN
VISO_SWITCH
SCHEMATIC DIAGRAM
MCU BOARD (1)

19
(ACC.DETECT)
(DGND_IPOD)
(KEY)
1S
2HSD1+
3HSD2+
4D+
5GND 6
D-
7
HSD2-
8
HSD1-
9
OE
10
VCC
U3
FSUSB30
1S
2HSD1+
3HSD2+
4D+
5GND 6
D-
7
HSD2-
8
HSD1-
9
OE
10
VCC
U9
FSUSB30
1S
2HSD1+
3HSD2+
4D+
5GND 6
D-
7
HSD2-
8
HSD1-
9
OE
10
VCC
U2
FSUSB30
R36 100
R5
100
R4 100
L3 N.I.
R10 N.I.
R9
10K
R35
0
R3
0
1
2
3
4
J1A
To PG-10 J18
1
2
J11
1
R2
2
VOUT2
3
VOUT3
4VIN
5V_ON/OFF
6R1/C1
U4
FDC6329
1
R2
2
VOUT2
3
VOUT3
4VIN
5V_ON/OFF
6R1/C1
U5
FDC6329
R11 10K
R16 10K
C25
0.1u
C26
0.1u
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
J5
1R
2AVDD
3RX1
4NC4
5RX0
6DVDD
7DVSS
8XTI
9XTO
10 LRCK
11 BICK
12 SDTO 13
DAUX
14
MCKO
15
NC15
16
UOUT
17
CDTO
18
CDTI
19
CCLK
20
CSN
21
INT1
22
INT0
23
PDN
24
AVSS
U7
AK4117
R15
1K
C32
N/A
C30 1000p
C31 1000p
C29
N/A
R12
1K
R7
2K
R8
2K
C20
100u
R17 0
R25 0
R26 0
C19
0.1u
C21
0.1u
R32 12K
C35
10u C34
22p
X2
11.2896MHz
C38
18p
C39
18p
C36
22p
C37
10u
C27
0.1u
C28
100u
L1
10uH
L5
BMB2A0600RSA
GND
OUTIN
U34
AP1117D-13
R152
220
R153
100
C150
4.7u
C152
4.7u C151 4.7u C154
100u
C140
100u C139
0.1u
R28 0R31 0
1
2
J1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J8
C43
N/A C44
N/A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J2
1SELECT
21/0
31/1
41Y
52/0
62/1
72Y
8GND 9
3Y
10
3/1
11
3/0
12
4Y
13
4/1
14
4/0
15
OE
16
VCC
U10
SN54LVC257A
R43 33
R45 33
R44 33
C48
10u C47
22p
R46 33
R47 33
R48 33
R49 33
R50 33
R51 33
R52 33
R78
33
R79
33
R80
33
R56 0
R57 0
R81 0
D2
SBR3U20SA
C22
100u
C23
100u
R18
0
R83
0
C41
0.1u
C24
0.1u
C40
0.1u
+3.3V
+3.3V
+3.3V
IPOD_DETECT
+3.3V
SYNC_UPDATE
D+
D-
ACC_PWR
IR
+3.3V
OVERCURRENT
VBUS
F5V
PC_SWITCH
TEMP_CH1
TEMP_CH2
TEMP_CH3
CH0_1_WS
CH0_1_SD
CH0_1_SCK
CH2_3_SCK
CH2_3_SD
CH2_3_WS
RESET
INTERRUPT
SPI-SCK-DDFA
SPI-CS-DDFA
SPI-SISO-DDFA
A3V3
+3.3V
INT1_AKM
INT0_AKM
PDN
SPI-CS2
SCK_3
MOSI_3
F5V
A3V3 +3.3V
5V25
1V8+3.3V
SYNC_UPDATE
5V25
+3.3V
OE
PC_VBUS
USB_D-
ID
PC_VBUS
USB_D-
USB_D+
OPT
KEY +3.3V
LED2
LED1
OPT
USB_D+
1USB_D+
1USB_D-
ACC_ID
ACC_PWR
IPOD_RX
IPOD_TX
GND
IPOD_DETECT
KEY
GND
GND
GND
GND
SEL1
SEL0
LRCK_BT
CH2_3_WS
CH2_3_SCK
CH2_3_SD
I2S_DATA_BT
SCK_BT
+3.3V
MISO_3
GND
USB_VBUSUSB_VBUS2
VISO_SWITCH
MCU BOARD (2)

20
UART INTERFACE1
UART INTERFACE2
FOR DEBUG ONLY
1GPIO_8/DTR
2GPIO_5/BT_STAT
3PCM_IN
4PCM_OUT
5PCM_SYNC
6PCM_CLK
7LED_EXT1
8LED_EXT0
9GND1
10 VDD_USB
11 VDD_IO
12 MSTR_VIN
13 GND3 14 SPI_CS 15 SPI_MISO 16 SPI_CLK 17 SPI_MOSI 18 GPIO_3/DSR 19 GPIO_4/RI 20 GPIO_2/DCD 21 GPIO_1/BT_ACT 22 GND2 23 AUDIO_GND 24 SPKR_A_N 25 SPKR_A_P 26 SPKR_B_N 27 SPKR_B_P
28
MIC_BIA S
29
MIC_BP_C
30
MIC_BN_C
31
MIC_A P_C
32
MIC_A N_C
33
NC8
34
NC34
35
NC9
36
NC10
37
NC11
38
NC12
39
NC13
40
NC14
41
NC15
42
NC6
43
NC5
44
NC4
45
USB_D-
46
USB_D+
47
GND4
48
UART_RTS
49
UART_CTS
50
UART_TX
51
UART_RX
52
GPIO_7/RF_ACT
53
GPIO_6/LAN_ACT
54
RESET
J7
BTM511
R40 33
R29 33
R41 33
R30 33
R42
22k
C46
0.1u
R69 33
R71 33
R68 33
R70 33
R72
130
R73
130
D1
D3
R60
10k
R61
NC
R65
NC
R64
10k
R66
10k
R67
NC
R63
NC
R62
10k
UART_RTS_H
UART_CTS_H
UART_TX_H
UART_RX_H
WLA N_A C TI VE
RF_ACTIVE
+3.3V
BT_STATE/BT_PRIORITY
I2S_DATA_BT
SCK_BT
LRCK_BT
+3.3V
DTR
DSR
RI
DCD
BT_A CTIVE
+3.3V
+3.3V
BT_STATE/BT_PRIORITY BT_ACTIVE
+3.3V
+3.3V
WLA N_A C TI VE
RF_ACTIVE
+3.3V
MCU BOARD (3)