Casio CTK-2080 User Manual

CTK-2080

INDEX

JUL. 2011

CTK-2080

ELECTRONIC KEYBOARD

Ver. 2 : Feb. 2012

CTK-2080

CONTENTS

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

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

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

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

PRINTED CIRCUIT BOARDS ......................................................................... 6

DISASSEMBLY ............................................................................................... 9

DIAGNOSTIC PROGRAM ............................................................................ 19

EXPLODED VIEW ......................................................................................... 26

PARTS LIST .................................................................................................. 27

SCHEMATIC DIAGRAMS ............................................................................. 30

SPECIFICATIONS

Keyboard 61 standard size keys

Maximum Polyphony 48 notes (24 for certain tones)

Tones

Built-in Tones 400
Sampling Tones 1 (Full Sampling) or 3 (Short Sampling)

Sampling Time: 1 second (Full Sampling) or

approximately 0.3 seconds each (Short Sampling)

Effects: 10 types (for Full Sampling samples)

Reverb 1 to 10, Off

Voice Pad 5 pads × 4 sets
(3 sets for sampled sounds, 1 set for percussion only)

Metronome

Beats per Measure 0, 2 to 6
Tempo Range 30 to 255

CTK-2080

Song Bank

Tunes 110

Step Up Lesson

Lessons 4 (Listen, Watch, Remember, Auto)
Lesson Part L, R, LR
Functions Repeat, Voice Fingering Guide, Note Guide, Performance Evaluation

Music Challenge 20 notes

Auto Accompaniment

Rhythm Patterns 150
One Touch Presets 150

Other Functions

Transpose ±1 octaves (-12 to +12 semitones)
Tuning A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz)

MIDI 16 multi-timbre received, GM Level 1 standard

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

ngering, pedal operation, tempo, measure and beat number,
chord name, etc.

Inputs/Outputs

USB port TYPE B
Sustain jack Standard jack (sustain, sostenuto, soft, rhythm)
Phones/Output jack Stereo standard jack
Output Impedance: 200 Ω, Output Voltage: 4.5 V (RMS) MAX
Audio In jack Stereo mini jack
Input Impedance: 9 kΩ, Input Sensitivity: 200 mV

Power Jack 9.5 V DC

– 1 –

Power Supply 2-way

Batteries 6 AA-size zinc-carbon batteries or alkaline batteries
Battery Life Approximately 3 hours continuous operation on alkaline batteries
AC Adaptor AD-E95100L
Auto Power Off Approximately 6 minutes (during battery operation) or 30 minutes

(during AC adaptor operation) without any operation

Speakers 10 cm × 2

Output 2 W + 2 W

Power Consumption 9.5 V 7.7 W

Dimensions 94.6 × 30.7 × 9.2 cm (37 1/4 × 12 1/16 × 3 5/8 inch)

Weight Approximately 3.4 kg (7.5 lbs) (without batteries)

CTK-2080

– 2 –

BLOCK AND WIRING DIAGRAM

KEYBOARD PCB (M800-KYA1) KEYBOARD PCB (M800-KYA2)

CN801 (13 pin) CN803 (16 pin)CN802 (13 pin)

CTK-2080

MAIN PCB (M822-MDA1)

USB

PEDAL (J1)

CN8 (4 pin)

Filter

VD3

Power Supply Circuit
IC6, C24, C25, C27,

C33, C35, C183

IC5

VD5

SUB PCB
(M822-PSA1)

ADIN

LOUT, ROUT

VA5

CN1 (11 pin)

AUDIO IN,
ADIN, APO,
STBY_CTL

MPU
LSI1

FI0~FI3, SI0~SI3, KC0~KC7

MA1~MA22

MD0~MD15

DB4~DB7,
E, R/W, RS, NMI

CN2 (10 pin) CN6 (12 pin)

CN301 (10 pin) CN302 (12 pin)CN101 (11 pin)

LCD

Controller/Driver

IC301

CN4 (16 pin)

Flash Memory

(16 Mbit)

LSI2

KC0~KC7,
KI1, KI2,
FI9, FI10

POWER SWITCH

(SW301, SW302)

VD5

Power Supply Circuit

C203~C205, D104, D105

D103

VA5

VA3

Power

Q101, Q102, Q106,

Supply Circuit

Q108, Q109, C185,

IC3, Q4, D1

D101

VCP

DC 9.5 V IN (J102)

APO

CN106 (+)

CN107 (-)

Filter

IC104

LOUT

ROUT

AUDIO IN (J104)

BATTERY

Filter

IC103

BUTTONS

MAIN VOL.

(SW303)

LCD

Power

Amplifier

IC101

PHONES (J103)

SPEAKER (L)

CN105 (-)

CN104 (+)

CN108 (+)

CN109 (-)

SPEAKER (R)

– 3 –

PCB INFORMATION

M822-MDA1M822-PSA1

CTK-2080

M800-KYA1

Classifi cation Parts Name PCB Name Components

MPU, Flash Memory (16 Mbit),

Main PCB PCB UNIT/MAIN M822-MDA1

Sub PCB PCB UNIT/POWER & AMP M822-PSA1

Keyboard PCB PCB UNIT/KYA

M800-KYA1

M800-KYA2

Power Supply Circuit, Filter,
SUSTAIN Jack, USB Port

Power Supply Circuit, Power Ampli er,

Filters, LCD Controller/Driver, LCD,
Buttons, Power Switch, Main Volume,
DC 9.5 V Terminal, AUDIO IN Jack,
PHONES/OUTPUT Jack

Keyboard

M800-KYA2

– 4 –

CIRCUIT DESCRIPTION



KEY MATRIX

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



NOMENCLATURE OF KEYS

CTK-2080

C2



BUTTON MATRIX

KI1

RHYTHM,

KI2

FI9 0 1 2 3 4 5 6 -

FI10 7 8 9 +

ONE TOUCH

PRESET

C3

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

SONG

BANK

$

TONE

TEMPO

w

C4

TEMPO

q

VOICE

PAD2,

WATCH

SET SELECT,

MUSIC

CHALLENGE

VOICE

PAD3,

REMEMBER

C5

VOICE

PAD4,

NEXT

VOICE

PAD1,

LISTEN

VOICE

PAD5,
AUTO

START/

STOP,

PLAY/
STOP

NORMAL/

FILL-IN,

REW

SYNCHRO/

ENDING,

PAUSE

C6

METRONOME,

BEAT

$

FUNCTION

ACCOMP,

CHORDS,

$

PART SELECT

C7

REPEAT,

INTRO

VAR./

FILL-IN,

FF

SAMPLING

– 5 –

Main PCB: M822-MDA1

CTK-2080

PRINTED CIRCUIT BOARDS

– 6 –

Sub PCB: M822-PSA1

CTK-2080

– 7 –

Keyboard PCB: M800-KYA1

Keyboard PCB: M800-KYA2

CTK-2080

– 8 –

CTK-2080

DISASSEMBLY



CAUTION

z

The photos show a prototype. The appearance of the instrument, such as color, may
differ from the actual model.

z

To avoid damages to the instrument and the oor, lay the instrument on a mattress

or blanket before starting disassembling.

z

There are several kinds of screws. Be sure to use the correct type of screws when
reassembling. It is advisable to sort the screws as shown below after removing
them.

z

If a screw cap is attached to a screw, be sure to reattach the screw cap when
reassembling.



BEFORE STARTING REPAIR OR SERVICING

z

Remove the AC adaptor, AC cord or batteries.

z

Remove accessories such as the music stand.

– 9 –



DISASSEMBLY

A. REMOVE THE PANEL UNITS

Main panel unit Right panel unitLeft panel unit

A-1. Undo 17 or seven screws on the bottom surface of the main unit.

NOTE: To remove only the main panel unit, undo seven screws indicated with red circles in the

illustration below.

CTK-2080

– 10 –

A-2. Place the main unit with the keys facing up.

A-3. Lift the main panel unit and turn it over.

NOTE: The main panel unit is connected to the lower case unit with the lead wires and FFCs.

Use caution when turn over the main panel unit.

Main panel unit

CTK-2080

Lead wires

(Left speaker)

Lead wires

(Batteries)

FFC

(M800-KYA2)

Lead wires

(Right speaker)

– 11 –

A-4. Disengage one hook and then remove the right panel unit.

A-5. Disengage one hook and then remove the left panel unit.

Hook Hook

CTK-2080

Right panel unitLeft panel unit

– 12 –

B. REMOVE THE M822-MDA1 PCB (MAIN PCB)

B-1. Unsolder one FFC.

M822-MDA1 PCB

FFC (M800-KYA2)

B-2. Unsolder three FFCs.

B-3. Undo three screws and then remove the M822-MDA1 PCB.

CTK-2080

FFC (M822-PSA1) M822-MDA1 PCB

<Notes On Assembly>

• The number of pins on the PCB pad differs from that on the cable. Solder in the way that No.1
pin on the cable (orange) is connected to No.1 pad on the PCB.

FFC (M822-PSA1)

PCB: 12 pads
Cable: 11 pins

– 13 –

C. REMOVE THE M822-PSA1 PCB (SUB PCB)

C-1. Unsolder four lead wires.

Lead wire (Blue)

Lead wire (White) Lead wire (Black) Lead wire (Red)

C-2. Undo 23 screws.

CTK-2080

C-3. Remove the M822-PSA1 PCB from main panel and then unsolder two lead wires.

Lead wire (Blue)

Lead wire (White)

– 14 –

C-4. Remove the M822-PSA1 PCB, LCD components and rubber keys.

LCD componentsM822-PSA1 PCB

CTK-2080

<Notes On Assembly>

• To install the M822-PSA1 PCB, tighten the screws for the LCD part in the order indicated with
the numbers below. If not tighten correctly, it may cause the LCD display errors.

5 2 4

M822-PSA1 PCB

6 1 3

D. REMOVE THE SPEAKER

D-1. Unsolder two lead wires.

D-2. Undo four screws and then remove the SPEAKER.

<Left speaker> <Right speaker>

Lead wire (Blue)

Lead wire (White)

Lead wire (White)

Lead wire (Blue)

– 15 –

E. REMOVE THE KEYBOARD

E-1. Undo 21 screws and then remove the keys.

CTK-2080

– 16 –

F. REMOVE THE M800-KYA1/KYA2 PCBs (KEYBOARD PCB)

M800-KYA1 PCB M800-KYA2 PCB

F-1. Unsolder one FFC connected to the M822-MDA1 PCB.

M822-MDA1 PCB

CTK-2080

FFC (M800-KYA2)

F-2. Disengage the hooks and then remove the M800-KYA1/KYA2 PCBs.

– 17 –

F-3. Remove ve rubber contact strips.

NOTE: One rubber contact strip differs in length.

CTK-2080

Rubber contact strips

<How To Install Rubber Contact Strips>

• Lightly insert the tip of a rubber contact strip into the
PCB. Pull the tip from the back of the PCB and install
it using a tool such as tweezers. Do not forcibly pull it.

This rubber contact strip differs

from the others in length.

– 18 –

DIAGNOSTIC PROGRAM



PREPARATION

(1) Connect the AC adaptor.

NOTE: “AC ADAPTOR CHECK” cannot be performed unless the AC adaptor is connected.

(2) Turn the main volume to the maximum.

(3) Have a PC and a USB cable ready.

NOTE: “USB CHECK” cannot be performed without a PC and a USB cable.

Operating System: Windows® XP (SP2 or later) *1
Windows Vista® *2
Windows 7® *3
Mac OS® X (10.3.9, 10.4.11, 10.5.8 or later, 10.6.6 or later)

*1: Windows XP Home Edition/Windows XP Professional (32 bit)

*2: Windows Vista (32 bit)

*3: Windows 7 (32 bit, 64 bit)

CTK-2080



HOW TO START THE DIAGNOSTIC PROGRAM

(1) Hold down the “0”, “1” and “2” buttons at the same time, to turn the power ON.

NOTE: Be sure to turn OFF the power when the test is nished.

(2) Release the “0”, “1” and “2”

(3) After the diagnostic program is launched, the test mode screen appears.

buttons.

– 19 –

CTK-2080



TEST ITEMS

Pressing a test button after the diagnostic program was launched or while on the main screen enables
the corresponding test item to be tested.

Test Items Buttons Note

A. BUTTON CHECK 1

B. AC ADAPTOR CHECK 3 AC adaptor

C. ROM VERSION & MODEL CHECK 9

D. LCD CHECK 2

E. USB CHECK PC, USB cable

<Test Mode Main Screen>



TEST PROCEDURES

A. BUTTON CHECK

A-1. Press the “1” button to select the “BUTTON CHECK”.

– 20 –

A-2. Press the button in the order indicated in the illustration.

NOTE: You cannot cancel this check procedure mid-way.

<If the result passes>

The conrmation chord sounds and “1:SW00XX” is displayed on the LCD with “XX” indicating the

corresponding button number in the illustration.

<If the result fails>

If there is a button failure or the buttons are pressed in a wrong sequence, an error tone sounds
and the button number which you pressed will be displayed on the LCD.

CTK-2080

START

1F

03

1E 1D 09 08

04 05 06 07 1C

00

01

02

0D 0A 0B 0E 0C 0F

– 21 –

1A

1B

10

1211

SW OK!

191817

161514

CTK-2080

A-3. When the “3” button is pressed at the end, a conrmation chord sounds and “SW OK!” is displayed

on the LCD.

A-4. Check to see if the LCD is as shown below.

A-5. Press the “0” button to return to the main screen.

B. AC ADAPTOR CHECK

B-1. Press the “3” button to select the “AC ADAPTOR CHECK”.

B-2. Make sure that a value “X” shown in the illustration is in the range of 1 to 3.

B-3. Press the “3” button again.

B-4. Make sure that a value “XX” shown in the illustration is in the range of 00 to FF.

B-5. Press the “0” button to return to the main screen.

– 22 –

C. ROM VERSION & MODEL CHECK

C-1. Press the “9” button to perform the “ROM VERSION CHECK”.

The ROM version appears on the LCD.

C-2. Check that the ROM version is “18376”.

C-3. Press the “9” button to perform the “MODEL CHECK”.

The model name appears on the LCD.

C-4. Check that the model name is “MX822”.

CTK-2080

C-5. Press the “0” button to return to the main screen.

– 23 –

D. LCD CHECK

D-1. Press the “2” button to select the “LCD CHECK”.

D-2. Press the “2” button and check to see if all LCDs are lit.

CTK-2080

D-3. Press the “2” button and check to see if all LCDs are turned off.

D-4. Press the “0” button to return to the main screen.

– 24 –

CTK-2080

E. USB CHECK

NOTE: The following procedures are for a PC with Windows XP.

E-1. Connect the main unit to the PC with a USB cable.

E-2. Open the windows “Device Manager”, and then make sure “USB Audio Devices” is listed under

“Sound, video and game controllers”.

E-3. Disconnect the USB cable.

E-4. Verify “USB Audio Devices” is not listed under “Sound, video and game controllers”.

– 25 –

EXPLODED VIEW

CTK-2080

19

22

24

21

23

4

5

6

7

8

13

12

8-1

14

11

15

2

9

10

16

7

22

17

18

1

23

25

24

20

21

27

34

35

36

42

40

43

25

39

41

45

38

35

37

46

37-1

36

26

29

28

31

30

32

47

33

32

3

44

– 26 –

PARTS LIST

CTK-2080

Notes:

1. Pricesandspecicationsaresubjecttochange
withoutpriornotice.

2. Refertothelatest“PartsPriceCode”at
“PARTSFINDER”ontheCasioServiceWEBsite
(https://www.servicecasio.com).

3. Asforsparepartsorderandsupply,referto
the“GUIDEBOOKforSparepartsSupply”,
publishedseparately.

4. Thenumbersinitemcolumncorrespondto
thesamenumbersindrawing.

– 27 –

CTK-2080_US

CTK-2080

N Item Code No. Parts Name Specification Q'ty

MAIN PCB

N 1 10401017 PCB UNIT/MAIN TK-RJM511249*001 1 A MDA1

J1 10206815 JACK/PEDAL JY-6314*01-030 1 B

CN8 10236624 CONNECTOR/USB UBR24-4K5G00 1 C

L11 10193074 COIL DLW21HN181SQ2L 1 X

D4 10009218 DIODE 1SS400TE61 1 X

IC5 10211950 IC NJM2068M-D(TE1) 1 X

N IC6 10398240 IC XC6402FV36PR-G 1 X

N LSI2 10396644 MEMORY MX29LV160DBTI-70G 1 C

X1 10375016 RESONATOR 7V48080006 1 X

N Q12,Q13 10399706 TRANSISTOR DSC500100L 2 X

SUB PCB

N 2 10401018 PCB UNIT/POWER & AMP TK-RJM511239*001 1 B PSA1

L103,L104 10231919 COIL RB53-856396NP 2 X

L102,L105,L106 10231920 COIL RB53-856397NP 3 X

J102 35015103 JACK/DC HEC3110-01-010 1 A

J103 10305218 JACK/PHONE JY-6316B*01-070 1 B

J104 10305131 JACK/AUDIO IN ST-3529B 1 B

IC103,IC104 10206677 IC NJM2068D-D 2 C

N IC101 10370338 IC TA8227APG-D12-H-T 1 X

IC301 10222381 LSI ST7066U-0A-QG 1 C

Q106 10206835 TRANSISTOR KTA1046-Y-U/P 1 X

VR301 69304870 VARIABLE RESISTOR EVND8AA03B53 1 X Contrast for LCD

D103,D104,

D301-D308

D101,D102 10261170 DIODE SRT14-A2 2 X

D105 23603102 DIODE UDZSTE-175.1B 1 X

TH301 10245365 THERMISTOR TSM1A103J34D3RZ 1 X

Q102,Q104,

N

Q108,Q109

Q105 10217742 TRANSISTOR KTA1270-Y-AT/P 1 X

Q101 10206675 TRANSISTOR KTA1273-Y-AT/P 1 X

23901820 DIODE 1SS355TE-17 10 X

10399706 TRANSISTOR DSC500100L 4 X

Price
Code

R Remarks

KEYBOARD PCB

3 10401014 PCB UNIT/KYA TK-RJM508609*003 1 C KYA1/KYA2

D801-D830,D832 10301580 DIODE LM1MA142WAT1G 31 X

PANEL UNIT

N4 10402407 DISPLAY PLATE RJM511072-001V02 1X

5 10199714 KNOB/SLIDE RJM503803-002V01 1 X

N 6 10400571 CASE/PANEL RJM511042-002V01 1 X

7 69276630 FABRIC TAPE/8X15 M440832-1 2 X

8 69270510 SLIDE CONTACT/8D CSB-08D 1 X

8-1 10417025 FABRIC TAPE/SL RJM511833-001V01 1 X

N9 10402514 SHEET/for fireproofing RJM511371-001V02 1X

N 10 10405127 LCD ZAS-TY012725DN00 1 X

11 10301465 RUBBER CONNECTOR/for LCD RJM508539-001V01 2 X

N 12 10400577 RUBBER BUTTON/A RJM511051-001V01 1 X

N 13 10400579 RUBBER BUTTON/B RJM511052-001V01 1 X

N 14 10400581 RUBBER BUTTON/C RJM511053-001V01 1 X

N 15 10400583 RUBBER BUTTON/D RJM511054-001V01 1 X

N 16 10400585 RUBBER BUTTON/E RJM511055-001V01 1 X

N 17 10400589 RUBBER BUTTON/F RJM511056-001V01 1 X

N 18 10400591 RUBBER BUTTON/G RJM511057-001V01 1 X

– 28 –

CTK-2080_US

CTK-2080

N Item Code No. Parts Name Specification Q'ty

SIDE PANEL UNIT

N 19 10394575 CASE/SIDE PANEL/LEFT RJM511043-001V01 1 X

N 20 10394576 CASE/SIDE PANEL/RIGHT RJM511044-001V01 1 X

N 21 10405274 PACKING/8X200 RJM511196-002V01 2 X

N 22 10264808 SPEAKER C10J01A 2 X

N 23 10402403 WIRE/BLUE 1007TASC24300B3030 2 X for Speaker (+)

N 24 10402404 WIRE/WHITE 1007TASC24300W3030 2 X for Speaker (-)

N 25 10345562 SPONGE/20X200 M440755-001V01 2 X for Speaker wires

KEYBOARD UNIT

N 26 10399802 WHITE KEY/CB TK-RJM507243*004 4 A

N 27 10399803 WHITE KEY/CS TK-RJM507244*004 1 X

28 10289646 BLACK KEY/10p RJM506595-005V02 2 A

29 10289647 BLACK KEY/5p RJM506595-006V02 1 X

30 10163902 RUBBER CONTACT/CB RJM503854-001V01 4 A

31 10163903 RUBBER CONTACT/CS RJM503855-001V01 1 X

N 32 69268840 FABRIC TAPE/4X10 M440684-1 3 X

33 10263729 SPONGE/43X180 M441123-001V01 1 X

MAIN CASE UNIT

34 10401011 CASE UNIT/MAIN TK-RJM511213*001 1 X

35 10284332 BRACKET/for STAND M440866-001V02 2 X

36 69226920 RUBBER FOOT M41361-6 4 X

N 37 10373683 FELT/LOWER LIMIT/KEYBOARD RJM508593-001V02 1 X

37-1 10317116 FELT/DAMPER/KEYBOARD RJM509138-001V01 1 X

N 38 10373681 FELT/UPPER LIMIT/KEYBOARD M440342-001V03 1 X

N 39 10400576 BATTERY TERMINAL/+ RJM511046-001V01 1 X

N 40 10380432 BATTERY TERMINAL/- M440002-001V03 1 X

41 69271060 BATTERY TERMINAL/A M440676-1 2 X

42 69271070 BATTERY TERMINAL/B M440677-1 3 X

43 10243428 BATTERY COVER TK-M340884*020 1 X

N 44 10381069 LOWER COVER/A RJM508655-001V04 1 X

N 45 10381070 LOWER COVER/B RJM508656-001V04 1 X

N 46 10381071 LOWER COVER/C RJM508657-001V04 1 X

47 10400556 LABEL/RATING RJM504373-050V02 1 X

Price
Code

R Remarks

ACCESSORIES

- 10366857 MUSIC STAND RJM510426-001V01 1 C

N - 10408260 AC ADAPTOR AD-E95100LU-P2 1 B

N - 10344814 STAND CS-30X(D) 1 X

– 29 –

Main PCB: M822-MDA1

CTK-2080

SCHEMATIC DIAGRAMS

Not used

(to PSA1/CN101)

PEDAL

USB

(J1)

(to PSA1/

CN301)

(to PSA1/

CN302)

(to KYA2/

CN803)

– 30 –

Sub PCB: M822-PSA1

BATTERY RIGHT SPEAKERLEFT SPEAKER

CTK-2080

(to LEFT SPEAKER)

Not used

PHONES

(J103)

DC 9.5 V IN

(J102)

AUDIO IN

(J104)

(to MDA1/

CN2)

(to RIGHT SPEAKER)

(to BATTERY)

POWER SWITCH

(SW301, SW302)

(to MDA1/CN1)
Not usd: 12 pin

(to MDA1/CN6)

MAIN VOL.

(SW303)

– 31 –

Keyboard PCB: M800-KYA1/KYA2

Not used

CTK-2080

(to KYA1/

CN801)

(to MDA1/

CN4)

Not used

(to KYA2/

CN802)

– 32 –

Ver. 1 : Jul. 2011

• Correction of the PARTS LIST (P28)

Ver. 2 : Feb. 2011

• Correction of the EXPLODED VIEW (P26)

• Correction of the PARTS LIST (P28 and P29)

CASIO COMPUTER CO.,LTD.

Overseas Service Division

6-2, Hon-machi 1-Chome

Shibuya-ku, Tokyo 151-8543, Japan