Casio CTK-4000 Troubleshooting guide

ELECTRONIC KEYBOARD

(without price)

CTK-4000

JUL. 2008

CTK-4000

Ver.2 : Dec. 2008

CONTENTS

SPECIFICATIONS ------------------------------------------------------------------------------------------ 1

BLOCK AND WIRING DIAGRAM --------------------------------------------------------------------- 3

PCB LAYOUT ----------------------------------------------------------------------------------------------- 4

CIRCUIT DESCRIPTION --------------------------------------------------------------------------------- 5

PRINTED CIRCUIT BOARDS -------------------------------------------------------------------------- 7

DIAGNOSTIC PROGRAM ------------------------------------------------------------------------------10

EXPLODED VIEW ----------------------------------------------------------------------------------------13

PARTS LIST ------------------------------------------------------------------------------------------------14

SCHEMATIC DIAGRAMS -------------------------------------------------------------------------------17

– 1 –

SPECIFICATIONS

Keyboard

Touch Response

Maximum Polyphony

Tones

Built-in Tones

Sampling Tones

Functions

Reverb

Chorus

Metronome

Beats per Measure

Tempo Range

Song Bank

Built-in Songs

User Songs

Step Up Lesson

Lessons

Lesson Part

Functions

Music Challenge

Auto Accompaniment

Built-in Rhythms

User Rhythms

Registration

Recorder

Keyboard Play

Playing Along with a

Built-in Songs

Memory Capacity

Other Functions

Transpose

Octave Shift

Tuning

Scale Tuning

Music Preset

One Touch Preset

Auto Harmonize

Arpeggiator

MIDI

Musical Information Function

61 standard-size keys

2 types, Off

48 notes (24 for certain tones)

570

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

Up to 10 seconds

Layer, Split

1 to 10, Off

1 to 5, Off

0, 2 to 6

30 to 255

152

Up to 10*

4 (Listen, Watch, Remember, Auto)

L, R, LR

Repeat, Voice Fingering Guide, Note Guide, Performance Evaluation

20 notes

180

Up to 10 (Accompaniment Edit)*

32 (4 setups × 8 banks)

Real-time recording, playback

5 songs, 6 tracks

1 song (L, R, LR)

Approximately 12,000 notes (total for 6 songs)

±1 octaves (12 semitones)

Upper/Lower ±2 octaves

A4 = approx. 440 Hz ±100 cents

Preset Scales

305

180

12 types

90 types

16 multi-timbre received, GM Level 1 standard

Tone, Rhythm, Song Bank, numbers and names; staff notation, ﬁngering, pedal

operation, tempo, measure and beat number, chord name, etc.

– 2 –

Inputs/Outputs

USB port

Sustain/Assignable jack

Phones/Output jack

Audio In jack

Power Jack

Power Supply

Batteries

Battery Life

AC Adaptor

Auto Power Off

Speakers

Power Consumption

Dimensions

Weight

TYPE B

Standard jack (sustain, sostenuto, soft, rhythm start/stop)

Stereo standard jack

Output Impedance: 200Ω, Output Voltage: 4.5V (RMS) MAX

Stereo mini jack

Input Impedance: 9kΩ, Input Sensitivity: 200mV

9V DC

2-way

6 D-size zinc-carbon batteries or alkaline batteries

Approximately 5 hours continuous operation on zinc-carbon batteries

AD-5

Approximately 6 minutes after last key operation (Operates during battery use only)

12cm × 2 (Output: 2.5W + 2.5W)

9V 7.7W

95.0 × 37.6 × 13.0 cm (37 7/16× 14 13/16× 5 /8 inch)

Approximately 4.6kg (10.1 lbs) (without batteries)

• Design and speciﬁcations are subject to change without notice.

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

(1Kbyte = 1,024bytes).

– 3 –

BLOCK AND WIRING DIAGRAM

KC5~KC7,

FI4~FI7,

SI4~SI7

KC0~KC4,FI0~FI3,SI0~SI3

MD0 ~ MD15

MA1~ MA18

MA1~MA23

VA5

VCP

VD5

VA3

VDP3

VD3

IC3

IC6

IC2

Power Supply Circuit

Q1~Q3,Q7,D105,203

VD5 VCP VA5

LVD5

CN22 CN18

CN14 CN15

VD3

CN2 (13pin)

CN801 (13pin) CN802 (10pin) CN803 (10pin) CN804 (11pin)

CN7 (4pin)

CN3 (11pin)CN3 (11pin)

CN1 (15pin)

CN3 (5pin)

CN5 (5pin)

CN4 9pin)

CN3 (15pin)

CN6 CN7

CN5 CN4

CN19 (5pin)CN18 (9pin)

MAIN PCB (M804-MDA1)

CONSOLE PCB (M804-PSA1)

CONSOLE PCB

(M805-CNB2)

CONSOLE PCB

(M805-CNA1)

KEYBOARD PCB

(M802-KYA1)

KEYBOARD PCB

(M802-KYA2)

SRAM(4Mbit)

IC9

P2ROM(128Mbit)

IC1

Keyboard Keyboard

MPU

IC7

Filter

IC5

POWER

SUPPLY

CIRCUIT

Filter

IC2

CONSOLE PCB

(M805-CNB1)

BUTTON

CONTROLLER

IC2

LCD

CONTROLLER

IC1

Power Amplifier

IC1

Filter

IC3

*Not used: 12pin-15pin

– 4 –

PCB LAYOUT

PCB Components

MAIN PCB M804-MDA1 MPU, Reset IC, SRAM(4Mbit), P2ROM(128Mbit), Key controller,

SD card, USB, Power supply circuit

SUB PCB M804-PSA1 Power supply circuit, Power amplifer, Phones terminal,

Phone terminal, Pedal, DC IN jack

Console PCBs M805-CNA1 LCD, LCD contorller, Button, Button contorller

M805-CNA2 Speaker

M805-CNA3 Speaker

M805-CNB1 Power SW, Button

M805-CNB2 Main volume

Keyboard PCBs M802-KYA1 Keyboard

M802-KYA2

M805-CNA1 PCBM804-PSA1 PCB

M805-CNB1 PCB

M805-CNB2 PCB

M804-MDA1 PCB

M802-KYA2 PCBM802-KYA1 PCB

– 5 –

Note: Each key has two contacts, the ﬁrst conatct 1 and second contact 2.

Key

Second contact First contact

NOMENCLATURE OF KEYS

CIRCUIT DESCRIPTION

KEY MATRIX

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

FI0 C2C2#D2D2#E2F2F2#G2

SI0 C2C2#D2D2#E2F2F2#G2

FI1 G2#A2A2#B2C3C3#D3D3#

SI1 G2#A2A2#B2C3C3#D3D3#

FI2 E3F3F3#G3G3#A3A3#B3

SI2 E3F3F3#G3G3#A3A3#B3

FI3 C4C4#D4D4#E4F4F4#G4

SI3 C4C4#D4D4#E4F4F4#G4

FI4 G4#A4A4#B4C5C5#D5D5#

SI4 G4#A4A4#B4C5C5#D5D5#

FI5 E5F5F5#G5G5#A5A5#B5

SI5 E5F5F5#G5G5#A5A5#B5

FI6 C6C6#D6D6#E6F6F6#G6

SI6 C6C6#D6D6#E6F6F6#G6

FI7 G6#A6A6#B6C7

SI7 G6#A6A6#B6C7

C2 C3 C4 C5 C6 C7

– 6 –

BUTTON MATRIX

SW00 SW01 SW02 SW03 SW04 SW05 SW06

SWI0 SAMPLING

RECORDER

RHYTHM CARD 4 8 9

SWI1 SCALE

EDITOR FUNCTION SONG

BANK TONE 7 5 6

SWI2 RHYTHM

EDITOR

METRONOME

LISTEN WATCH 1 2 +

SWI3 TEMPO

DOWN

START/

STOP

REMEMBER

NEXT 0 - 3

SWI4

CHORDS/

ACCOMP

ON_OFF

TEMPO

UP AUTO

MUSIC

CHALLENGE

SPLIT LAYER

AUTO

HARMONIZE/

APPEGGIATOR

SWI5 VARIATION/

FILL-IN

SYNCHRO/

ENDING

SWI6 NORMAL/

FILL-IN INTRO

– 7 –

PRINTED CIRCUIT BOARDS

Main PCB M804-MDA1

Top View

Bottom View

Sub PCB M804-PSA1

Top View

Bottom View

– 8 –

Console PCB M805-CNA1

Top View

Bottom View

Console PCB M805-CNA2 Console PCB M805-CNA3

Console PCB M805-CNB1

Console PCB M805-CNB2

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