Casio WK-1200 - User Manual

This service manual covers the Casio WK-1200 electronic keyboard, focusing on its internal architecture, component specifications, and repair procedures. The document includes detailed technical breakdowns of key systems–such as the CPU (LSI1), DSP (LSI2), power supply, MIDI interfaces, and LCD driver circuitry–to aid technicians in diagnostics, troubleshooting, and circuit adjustments. It also provides schematics for printed circuit boards, pin configurations, waveform analysis, and assembly guidance, ensuring compatibility with General MIDI standards and supporting maintenance tasks like voltage calibration and component replacement.

Page 1 – Product Identification and Support Information
Page 2 – Specifications and Table of Contents
Page 3 – MIDI Keyboard Technical Specifications
Page 4 – Internal Circuitry Block Diagram
Page 5 – Keyboard Key Matrix Circuit Description
Page 6 – Button Matrix and Power Supply Circuitry
Page 7 – LCD Backlight and Reset Circuits
Page 8 – CPU Pin Configuration and Specifications
Page 9 – Digital Signal Processor Pin Functions
Page 10 – LCD Driver Pin Configuration
Page 11 – Audio Signal Processing
Page 12 – Power Amplifier IC Circuitry
Page 13 – Vop Voltage Adjustment Procedure
Page 14 – Signal Waveform Testing
Page 15 – Printed Circuit Board Layouts
Page 16 – Main PCB Schematic
Page 17 – Sub PCB Sub-Assembly Schematic
Page 18 – Console PCB Circuitry Schematic
Page 19 – LCD Driver PCB Schematic
Page 20 – Keyboard PCB Pin Configuration
Page 21 – Internal Component Exploded View
Page 22 – WK-1200 Parts List
Page 23 – Printed Circuit Board Component Listing
Page 24 – Functional Component Parts List
Page 25 – Service Contact Information

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ELECTRONIC KEYBOARD

WK-1200

WK-1200

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

REVERB

FREE

SESSION
LAYER

SPLIT
TOUCH
RESPONSE

MEMORY TRACK/DRUM PAD

HALL

STAGE
ROOM

SYNTH

MIXER

MEMORY

STEP

CHORD/1

REVERB

SYNTH

MIXER

MUSICAL INFORMATION SYSTEM

MEMORY

STEP

TEMPO

ACCOMP VOLUME

SYNCHRO/END

ING

INTRO

NORMAL/FIL

L-IN

VAR/FILL

-IN

AMP ENVELOPE

000-048 DECAY

PITCH ENVELOPE

00 FLAT

049-137 SUSTAIN

01-19 VIBRATO

20-49 OTHERS

MODE

POWER

VOLUME

100 RHYTHMS

FULL RANGE

MAX

ENVELOPE

MIN

CHORD

FINGERED
CASIO CHORD

NORMAL

TRANSPOSE/

FREE SESSION

LAYER

SPLIT

TOUCH

RESPONSE

TUNE/MIDI

CURSOR

RHYTHM

TONE

ENTER

200TONES

DEMO

TIE

REST

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About this manual

Brand: Casio
Model: WK-1200
Document type: User Manual
Language(s): English
Pages: 25
File size: 2.1 MB
Format: PDF

Summary

Page 1 - Product Identification and Support Information

Cover page featuring the keyboard line drawing and service manual designation.

Page 2 - Specifications and Table of Contents

Table of contents and technical specifications covering general features, rhythm functions, memory, synthesizer, mixer, MIDI, and other instrument functions.

Page 3 - MIDI Keyboard Technical Specifications

Technical details for the MIDI keyboard, including terminal types, power supply options, electrical performance metrics, physical dimensions, weight, and General MIDI compatibility.