Korg DW-6000 - Service Manual

PROGRAMMABLE
DIGITAL WAVEFORM
SYNTHESIZER
MANUAL
DW-6000
CONTENTS
1.
SPECIFICATIONS
2
2.
MIDI
IMPLEMENTATION :
3
3.
DATA DUMP
REFERENCE
6
4.
STRUCTURAL
DIAGRAM
10
5.
BLOCK
DIAGRAM
13
6.
CIRCUIT DIAGRAM
14
7. PC
BOARD
20
8.
CIRCUIT
DESCRIPTIONS
26
9.
CHECK
AND
ADJUSTMENT
PROCEDURE
29
10.
TROUBLESHOOTING
TABLE
32
11.
PARTS
LIST
33
KEIO
ELECTRONIC
LABORATORY
CORPORATION
TOKYO/JAPAN

Korg DW-6000 Specifications

General

Polyphony	6 voices
VCA	Analog VCA
Effects	Chorus
Keyboard	61 keys
Year Released	1985
Type	Synthesizer
Synthesis Type	Digital Waveform Modulation
Oscillators	2
LFO	1 LFO
Filter	Low-pass
Memory	64
MIDI	In/Out

Summary

MIDI Implementation

Transmitted Data

Details on data transmitted via MIDI, including channel messages.

System Exclusive Message

Defines system exclusive messages for Korg DW-6000, including device ID and write commands.

Recognized Receive Data

Details on MIDI data recognized by the DW-6000, including channel and system exclusive messages.

Data Dump Reference

DW-6000 Bit Map

Defines the bit map for DW-6000 data dump parameters, including offset and parameter values.

Interface with Personal Computer

Data Exchange Sending

Types of data sent from the DW-6000 to a computer, including device ID and data dump.

Data Exchange Receiving

Types of data received by the DW-6000 from a computer, including requests and parameter changes.

Circuit Descriptions

Overview of Circuit Boards

Lists the different circuit boards used in the DW-6000 and their primary functions.

KLM-653 Microcomputer and I;O Ports

Detailed description of the KLM-653 CPU, ports (A, B, C, TXD/RXD, Analog, Bus), and associated ICs.

KLM-654 DWGS System and Oscillator

Description of the DWGS basic system, CPU interface, wave table processing, and oscillator operation.

Check and Adjustment Procedure

D;A Converter Voltage Check

Checks and adjusts the reference voltage of the D/A converter on KLM-654.

DWGS Clock Check

Checks and adjusts the DWGS clock frequency on KLM-654.

OSC1 VCA Level Check

Checks and adjusts the VCA level for OSC1 on KLM-655.

OSC2 VCA Level Check

Checks and adjusts the VCA level for OSC2 on KLM-655.

Resonance Level and fo Check

Checks and adjusts resonance level and fo for voices on KLM-655.

fc Slope Check

Checks and adjusts the fc slope for voices on KLM-655.

Noise Level Check

Checks and adjusts the noise level for voices on KLM-655.

BBD Input Distortion Check

Checks and adjusts BBD input for distortion on KLM-711.

Troubleshooting Table

Parts List

Resistors

Lists various types of resistors including carbon, metal film, block, thermistors, and semi fixed VRs.

Capacitors

Lists various types of capacitors including Mylar, Styrol, Ceramic, Electrolytic, and film capacitors.

Semiconductors and Diodes

Lists transistors, digital transistors, diodes, bridge diodes, and double diodes.

Passive Components and Hardware

Includes fuses, harnesses, connectors, switches, sockets, washers, clips, and case parts.