Numark D2 Director, Service Manual

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NH00 Top Level System Description
rev 0
PG 15 Jan 07
Introduction
The NH00 is a rack mount DJ audio player, playing content from USB devices such as flash drives
and hard discs. Effects are available that are useful to a DJ: pitch shifting, scratching, looping and
beatkeeping. A large LCD display is featured along with an innovative user interface. The
electronics are implemented in 3 PCBs; the CPU board, the I/O board and the Control board.
This document describes the top level design of the system, and should be read in conjunction with
the circuit descriptions of the individual boards.
Block Diagram
Microcontroller
LEDs
Switches
Scratch Wheels
Pitch faders
PSU & control
CODEC
CPU BOARD LCD MODULE
Audio out
4 channels
Power in
+12V DC
I2S Audio
SPI
I/O BOARD
CONTROL BOARD
USB1 USB2 USB3