Casio CTK-2000 Troubleshooting guide

ELECTRONIC KEYBOARD

(without price)

CTK-2000

MAY. 2008

CTK-2000

Ver.2 : Nov. 2008

CONTENTS

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

BLOCK AND WIRING DIAGRAM --------------------------------------------------------------------- 2

PCB LAYOUT ----------------------------------------------------------------------------------------------- 3

CIRCUIT DESCRIPTION --------------------------------------------------------------------------------- 4

PRINTED CIRCUIT BOARDS -------------------------------------------------------------------------- 5

DISASSEMBLY --------------------------------------------------------------------------------------------- 8

DIAGNOSTIC PROGRAM ------------------------------------------------------------------------------13

EXPLODED VIEW ----------------------------------------------------------------------------------------16

PARTS LIST ------------------------------------------------------------------------------------------------17

SCHEMATIC DIAGRAMS -------------------------------------------------------------------------------20

– 1 –

SPECIFICATIONS

Keyboard

Maximum Polyphony

Tones

Built-in Tones

Sampling Tones

Reverb

Metronome

Beats per Measure

Tempo Range

Song Bank

Tunes

Step Up Lesson

Lessons

Lesson Part

Functions

Music Challenge

Auto Accompaniment

Rhythm Patterns

Other Functions

Transpose

Tuning

MIDI

Musical Information Function

Inputs/Outputs

USB port

Sustain jack

Phones/Output jack

Audio In jack

Power Jack

Power Supply

Batteries

Battery Life

AC Adaptor

Auto Power Off

Speakers

Output

Power Consumption

Dimensions

Weight

61 standard-size keys

48 notes (24 for certain tones)

400

Sampling time: 1 second (ﬁxed)

Effects: 10 types

1 to 10, Off

0, 2 to 6

30 to 255

110

4 (Listen, Watch, Remember, Auto)

L, R, LR

Repeat, Voice Fingering Guide, Note Guide, Performance Evaluation

20 notes

150

±1 octaves (12 semitones)

A4 = approx. 440 Hz ±100 cents

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.

TYPE B

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

Stereo standard jack

Output Impedance: 200Ω, Output Voltage: 4.8V (RMS) MAX

Stereo mini jack

Input Impedance: 40kΩ, Input Sensitivity: 200mV

9V DC

2-way

6 AA-size zinc-carbon batteries or alkaline batteries

Approximately 4 hours continuous operation on alkaline batteries

AD-5

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

10cm × 2

2W + 2W

9V 7.7W

94.9 × 35.4 × 11.2 cm (37 3/8× 13 15/16× 4 7/16inch)

Approximately 3.8kg (8.4 lbs) (without batteries)

– 2 –

BLOCK AND WIRING DIAGRAM

MAIN PCB

(M800-MDA1)

SUB PCB

(M800-PSA1)

CONSOLE PCB

(M800-CNA)

CONSOLE PCB (M800-CNB)

MA1 ~ MA21

DB4 ~ DB7,E,R/W,RS (LCD signal)

KC0 ~ KC7,KI1,KI2,F19,FI10 (Button signal)

NMI

VE5

VD5

VD3

NMI

VCP

D103

MD0 ~ MD15

KC0 ~ KC7,FI0 ~ FI3,SI0 ~ SI3

P2ROM

(16Mbit)

IC2

POWER

CIRCUIT

Q101,Q102,

D104,D106

Power

Amplifier

IC101

LCD CONTROLLER

IC401

D/D CONVERTER

IC4,IC5

M800-KYA2 M800-KYA1

LOUT,ROUT

APO

ADIN

PEDAL

(L) (R)

Filter

IC3

Filter

IC2

Filter IC6

D107

MPU

IC1

CN801 (13pin)

CN1 (16pin)

CN6 (10pin)CN5 (12pin) CN3 (11pin)

CN109 (11pin)

CN404 (10pin)CN405 (12pin)

CN401 (8pin)

CN302 (8pin) CN301 (8pin)

CN106 (8pin)

CN803 (16pin)CN802 (13pin)

PHONES

POWER SW

MIAN VOL

SPEAKERS

LCD

USB

DC JACK

AUDIO IN

PEDAL

– 3 –

PCB LAYOUT

PCB Components

MAIN PCB M802-MDA1 MPU, ROM(16Mbit), D/D converter, USB terminal

SUB PCB M800-PSA1 Power supply circuit, Power amplifer

Phones terminal, Pedal terminal, Audio terminal, DC JACK

Console PCBs M802-CNA LCD controller, Button

M802-CNB Power switch, Main volume, Button

Keyboard PCBs M802-KYA1 Keyboard

M802-KYA2

M800-MDA1 PCB

M800-CNA PCB

M800-PSA1 PCB

M800-CNB PCB

M800-KYA1 PCB M800-KYA2 PCB

– 4 –

CIRCUIT DESCRIPTION

KEY MATRIX

NOMENCLATURE OF KEYS

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

KI0 C2 C2# D2 D2# E2 F2 F2# G2

KI1 G2# A2 A2# B2 C3 C3# D3 D3#

KI2 E3 F3 F3# G3 G3# A3 A3# B3

KI3 C4 C4# D4 D4# E4 F4 F4# G4

KI4 G4# A4 A4# B4 C5 C5# D5 D5#

KI5 E5 F5 F5# G5 G5# A5 A5# B5

KI6 C6 C6# D6 D6# E6 F6 F6# G6

KI7 G6# A6 A6# B6 C7

C2 C3 C4 C5 C6 C7

BUTTON MATRIX

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

KI1 TONE SONG TEMPO

GAME

WAIT PLAY/

STOP

METRONOME REPEAT

KI2 RHYTHM TEMPO

DOWN TYPE

PHRASE

START/

STOP REW FUNCTION FF

KI9 0 1 2 3 4 5 6 -

KI10 7 8 9 + GUIDE PAUSE PART

SELECT SAMPLING

– 5 –

PRINTED CIRCUIT BOARDS

Main PCB M800-MDA1 Sub PCB M800-PSA1

Top View

Bottom View

Top View

Bottom View

– 6 –

Console PCB M800-CNB

Top View

Bottom View

Console PCB M800-CNA

– 7 –

Key PCB M800-KYA1

Key PCB M800-KYA2

– 8 –

DISASSEMBLY

1. Remove the battery cover and then battery.

2. Remove 11 screws and then upper case.

3. Remove two lead wires by soldering.

4. Remove cable by soldering.

5. Make the keyboard unit and the main unit apart.

Read wire (Red)

Read wire (Black)

Cable (CN1)

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