Casio WK-240 Montage- und Wartungsanleitung

WK-240

JUN. 2014

Ver. 1 : Jul. 2014

WK-240

CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

BLOCK AND WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

PCB INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

PRINTED CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

DIAGNOSTIC PROGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

PARTS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

WK-240

– 1 –

SPECIFICATIONS

Keyboard

Touch Response

76 standard size keys

2 types, Off

Maximum Polyphony 48 notes (24 for certain tones)

Tones

Built-in Tones

Sampling Tones

Functions

600

Up to 8 (Melody Sampling: 5, Drum Sampling: 3)*

Up to 10 seconds

Layer, Split, Piano/Organ button

Virtual Hall On, Off

Reverb 1 to 10, Off

Chorus 1 to 5, Off

Metronome

Beats per Measure

Tempo Range

0 to 9

30 to 255

Song Bank

Built-in Songs

User Songs

152

Up to 10*

Step Up Lesson

Lessons

Lesson Part

Functions

4 (Listen, Watch, Remember, Auto)

L, R, LR

Repeat, Voice Fingering Guide, Note Guide,

Performance Evaluation

Music Challenge 20 notes

Auto Accompaniment

Built-in Rhythms

User Rhythms

180

Up to 10 (Accompaniment Edit)*

Chord Book Function Chord guide

Registration 32 (4 setups × 8 banks)

Recorder

Keyboard Play

Playing Along with a

Built-in Songs

Memory Capacity

Real-time recording, playback

5 songs, 6 tracks

1 song (L, R, LR)

Approximately 12,000 notes (total for 6 songs)

Other Functions

Transpose

Octave Shift

Tuning

Preset Scales

Music Preset

One Touch Preset

Auto Harmonize

Arpeggiator

±1 octaves (–12 to +12 semitones)

Upper/Lower ±2 octaves

A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz)

305

180

12 types

90 types

WK-240

– 2 –

MIDI 16 multi-timbre received, GM Level 1 standard

Musical Information Function Tone, Rhythm, Song Bank numbers and names, staff notation,

ﬁngering, pedal operation, tempo, measure and beat number,

chord name, etc.

Inputs/Outputs

USB port

Sustain/Assignable jack

Phones/Output jack

Audio In jack

Mic In/Sampling jack

TYPE B

Standard jack (sustain, sostenuto, soft, rhythm)

Stereo standard jack

Output Impedance: 140 Ω, Output Voltage: 4.5 V (RMS) MAX

Stereo mini jack

Input Impedance: 9 kΩ, Input Sensitivity: 200 mV

Standard jack (connect a dynamic microphone only)

Input Impedance: 3 kΩ, Input Sensitivity: 10 mV

Power Jack DC 9.5 V

Power Supply

Batteries

Battery Life

AC Adaptor

Auto Power Off

2-way

6 D-size zinc-carbon batteries or alkaline batteries

Approximately 5 hours continuous operation on zinc-carbon batteries

AD-E95100L

• The AC adaptor can be used safely in areas up to 4,000 meters

above sea level.

Approximately 6 minutes (during battery operation) or 30 minutes

(during AC adaptor operation) without any operation, Auto Power Off

can be disabled.

Speakers 12 cm × 2 (Output: 2.5 W + 2.5 W)

Power Consumption 9.5 V =7.7 W

Dimensions 116.1 × 38.5 × 13.4 cm (45 3/4× 15 3/16 × 5 1/4inch)

Weight Approximately 6.9 kg (15.2 lbs) (without batteries)

* This data is stored in a shared memory area with a total capacity of approximately 320 Kbytes (1 Kbyte =

1,024 bytes).

WK-240

– 3 –

BLOCK AND WIRING DIAGRAM

KEYBOARD PCB (M709-KYA1)

MAIN PCB

(M822-MDA1)

POWER & AMP PCB

(M829-PSA1)

KEYBOARD PCB (M709-KYA2)

BATTERY

CN802 (10 pin) CN803 (10 pin) CN804 (15 pin)

CN4 (13 pin) CN5 (15 pin)

CN7 (+)

CN8 (-)

CN2 (10 pin) CN7 (5 pin)

CN16 (10 pin) CN20 (5 pin)CN14 (11 pin)

CN15 (+)

CN17 (-)

CN10 (+)

CN9 (-)

CN1 (11 pin)

USB (CN8)

MIC IN (J4)

PHONES (J1)

PEDAL (J1)

SPEAKER (L)

SPEAKER (R)

MIC VOL. (VR2)

MAIN VOL. (VR3)

AUDIO IN (J3)

CN8 (4 pin)

CN801 (13 pin)

FI0~FI3,

SI0~SI3,

KC0~KC4

FI4~FI9,

SI4~SI9,

KC5~KC7

LOUT, ROUT

AUDIO IN/MIC,

ADIN, APO,

STBY_CTL

ARXD,

ATXD

DB4~DB7,

E, R/W, RS, NMI

MPU

LSI1 Flash Memory

(128 Mbit)

LSI3

Button Controller

IC1

LCD

Controller/Driver

IC5

Power

Amplifier

IC2

MA1~MA19

MD0~MD15

MA1~MA23

SRAM

(4 Mbit)

LSI4

Filter

IC5

Filter

IC3

Power Supply Circuit

IC6, C24, C25, C27,

C33, C35, C183

Power

Supply Circuit

IC3, Q4, D1

Power Supply Circuit

Q4, Q6, Q7, C35~C37,

C40, C109, D4, D5

VA5

VD3

VD5

VA5

VA3VC

VD5

LOUT

ADIN

APO

ROUT

LCD

BUTTONS

POWER

SWITCH

DC (J2)

VCP

Filter

IC4

WK-240

– 4 –

PCB INFORMATION

M822-MDA1M829-PSA1

M709-KYA1 M709-KYA2

Parts Name PCB Name Functions

Main PCB

PCB UNIT/MAIN M822-MDA1 MPU, SRAM, Flash memory, Power supply circuit, Filter,

SUSTAIN/ASSIGNABLE jack, USB port

Power & Amp PCB

BACK LIGHT UNIT M829-PSA1

Power supply circuit, Power ampliﬁer, Filters,

LCD controller/driver, Button controller, LCD, Buttons,

Power switch, Main volume, Mic volume, DC terminal,

AUDIO IN jack, PHONES/OUTPUT jack,

MIC IN/SAMPLING jack, Speakers

Keyboard PCB

PCB UNIT/KYA M709-KYA1 Keyboard

M709-KYA2

WK-240

– 5 –

CIRCUIT DESCRIPTION

Y Nomenclature of Keys

E1 C2 C3 C4 C5 C6 C7 G7

Y Key Matrix

Each key has two contacts, the ﬁrst contact and second contact .

[NOTE] The diagram below illustrates how the contacts work.

Key

Second contact



First contact



KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

FI0 E1F1F1#G1G1#A1A1#

SI0 E1F1F1#G1G1#A1A1#

FI1 B1C2C2#D2D2#E2F2F2#

SI1 B1C2C2#D2D2#E2F2F2#

FI2 G2G2#A2A2#B2C3C3#D3

SI2 G2G2#A2A2#B2C3C3#D3

FI3 D3#E3F3F3#G3G3#A3A3#

SI3 D3#E3F3F3#G3G3#A3A3#

FI4 B3C4C4#D4D4#E4F4F4#

SI4 B3C4C4#D4D4#E4F4F4#

FI5 G4G4#A4A4#B4C5C5#D5

SI5 G4G4#A4A4#B4C5C5#D5

FI6 D5#E5F5F5#G5G5#A5A5#

SI6 D5#E5F5F5#G5G5#A5A5#

FI7 B5C6C6#D6D6#E6F6F6#

SI7 B5C6C6#D6D6#E6F6F6#

FI8 G6G6#A6A6#B6C7C7#D7

SI8 G6G6#A6A6#B6C7C7#D7

FI9 D7#E7F7F7#G7

SI9 D7#E7F7F7#G7

WK-240

– 6 –

Y Button Matrix

SWO0 SWO1 SWO2 SWO3 SWO4 SWO5 SWO6

SWI0 BANK, LISTEN Area1, WATCH

RHYTHM,

ONE

TOUCH PRESET

MUSIC PRESET 4 8 9

SWI1 Area2,

REMEMBER Area3, NEXT SONG BANK TONE 7 5 6

SWI2 Area4,

AUTO

STORE,

MUSIC

CHALLENGE

12+

SWI3

CHORDS,

ACCOMP,

PART SELECT

VAR./FILL-IN,

FF TEMPO yVIRTUAL HALL,

DEMO 0–3

SWI4 NORMAL/FILL-IN,

REW

START/STOP,

PLAY/STOP TEMPO tSPLIT RECORDER,

SAMPLING

AUTO

HARMONIZE/

ARPEGGIATOR,

TYPE

SWI5 INTRO, REPEAT

SYNCHRO/

ENDING,

PAUSE

METRONOME,

BEAT RHYTHM EDITOR LAYER PIANO/ORGAN,

CHORD BOOK FUNCTION

WK-240

– 7 –

PRINTED CIRCUIT BOARDS

Main PCB: M822-MDA1

WK-240

– 8 –

Power & Amp PCB: M829-PSA1

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