Yamaha Disklavier E3 Series Maintenance Handbook page 6

1. Control Unit (DKC-800)
The control unit manages all operations
including those operated by the remote
control.
Information is also provided in the display
according to the particular operation. The
control unit sends and receives record and
playback data with the CSP unit and
stores performance data in the internal
Flash memory (128MB).
The unit also controls the CD drive and
manages data from the IN/OUT terminals
of external memory devices (USB drive),
MIDI connections, LAN connections, and
computer connected to the device.
The control unit's parts and their major
functions are listed below.
・CTRL(Control) Sheet : The control unit's
main board, controls display and TO
HOST
・MC (Media Control) Sheet :Controls internet communications
and the USB ports (front, rear)
・APE(Audio Process Card for E3) Sheet : Controls Ensemble
tone generator, CD audio processing
・USB Sheet : Made up of power switch, front USB port,
remote control sensor
・CD drive unit with EXG(exchange) Sheet : CDEXG Sheet
converts CD control signals
・Panel Sheet with EL Display : Assorted buttons and indicators
・ENCD(Encoder) Sheet : Rotary encoder
・JACK Sheet : MIDI terminals, analog input/output jacks
・REG (Regulator) Sheet : Converts voltage supplied by the PS unit
12V to 3.3V, 5V, 1.2V, ±9V
4
6
Control Unit, without top cover
With CD drive unit Removed