Casio WK-1200- User Manual

Page 2 - SPECIFICATIONS; GENERAL; CONTENTS

— 1 — SPECIFICATIONS GENERAL Keyboard: 73 standard-size keys, 6 octaves (with touch response on/off) Drum pads: 6 Tones: 200 (128 General MIDI, 32 synthesized, 8 drum, 32 user); with layer andsplit Rhythm instrument tones: 51 Polyphony: 24 notes maximum (12 for certain tones) Digital effects: 3 reve...

Page 4 - BLOCK DIAGRAM

— 3 — BLOCK DIAGRAM KC0 ~ KC7 FI0 ~ FI9SI0 ~ SI9 KI0 ~ KI2PB0 ~ PB3 P10, P13P14, P17 Working Storage RAM (256K-bit) LSI4 TC55257DFL-70L(EL) MIDI EA0 ~ EA14 EIO0 ~ EIO7 Sound Source ROM (16M-bit) LSI3 MX23C1610MC- 12CA64 LRCKSOBCK D/A Converter IC1 UPD6379GR Filter Q308 ~ Q311 MainVolume Power Amplif...

Page 5 - CIRCUIT DESCRIPTION; KEY MATRIX

— 4 — CIRCUIT DESCRIPTION KEY MATRIX Note: Each key has two contacts, the first conatct (1) and second contact (2). Key Second contact (2) First contact (1) KC SI FI 0 C K 1 C K 2 C K 3 C K 4 C K 5 C K 6 C K 7 C K 0 I F ) 1 ( 1 C ) 1 ( 1 # C ) 1 ( 1 D ) 1 ( 1 # D ) 1 ( 1 E ) 1 ( 1 F ) 1 ( 1 # F ) 1 ...

Page 11 - FILTER BLOCK

— 10 — FILTER BLOCK Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth thewaveforms. DAC (IC1: UPD6379GR) The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of themelody, chord, bass, and percussion for the right...

Page 13 - ADJUSTMENT; DISPLAY PCB

— 12 — 3) Equipment connection/Procedure Vop voltage setting Output Set Voltmeter TP2 InputConnection InputPoint InputSignal Adjust OutputConnection OutputPoint Adjust for VR501 Voltmeter TP2 Adjust for 4.4 ± 0.1 V reading on voltmeter.Make fine adjustment accord-ing to the next instruction. Watchin...

Page 14 - MAJOR WAVEFORMS

— 13 — MAJOR WAVEFORMS 1 Clock signal SINKTest point T5 2 Clock signal FB1Test point T3 3 Clock signal FB2Test point T4 5 Key common signal KC0JC connector pin 3 6 Key common signal KC1JC connentor pin 4 7 Sound signal (LMEL)Test point T2 8 Sound signal (RMEL)Test point T1 9 Sound signal (LIN)JK con...

Page 15 - PRINTED CIRCUIT BOARDS

— 14 — PRINTED CIRCUIT BOARDS Main PCB JCM730-MA1M Sub PCB JCM730-MA2M Top View Bottom View 5 6 3 2 7 8 1 4 9 10

Page 16 - SCHEMATIC DIAGRAMS

— 15 — SCHEMATIC DIAGRAMS Main PCB JCM730-MA1M 8 7 2 3 1 4 6 5

Page 19 - LCD Driver PCB JCM730-LCD1M

Page 21 - EXPLODED VIEW

— 21 — EXPLODED VIEW 19 20 3 1 4 6 6 5 2 35 9 8 13 14 33 22 21 22 31 32 30 19 18 11 10 27 29 34 24 7 28 28 23 25 26 12 R-4 R-5 R-3 R-1 R-2 15 17 18 16

Page 22 - This parts list does not include the cosmetic parts, which; PARTS LIST

Notes: This parts list does not include the cosmetic parts, which p a r t s a r e m a r k e d w i t h i t e m N o . " R - X " i n t h e e x p l o d e dview.C o n t a c t o u r s p a r e p a r t s d e p a r t m e n t i f y o u n e e d t h e s eparts for refurbish. 1. Prices and specifications...

Table of Contents:

Summary

Other Casio Models