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”