General Music WX400 - User Manual

Introduction to the schematic diagrams for the WX400 multimedia workstation.

Step-by-step guide to opening the WX400 instrument.

Instructions for removing the keyboard assembly from the chassis.

Procedure for safely removing individual keys and springs.

Diagram showing the location and part numbers of internal components.

Guide for installing an optional DRAM expansion kit.

Identification of adjustment points for contrast, levels, and aftertouch.

Overview of the WX400's internal system connections and modules.

Block diagram for the CPU and sound generation circuitry.

Schematic diagrams for the DC-AC converter and phones boards.

Schematic diagram for the power amplifier and supply board.

Schematic diagrams for the left and right keyboard contact boards.

Schematic diagram for the main controls panel board.

Visual representation of critical signal timings for system operations.

Comprehensive table detailing adjustment types, test points, and values.

Essential safety warnings and guidelines for qualified personnel.

Step-by-step instructions for replacing EPROMs during the upgrade.