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
MD0 ~ MD15
MA1~ MA18
MA1~MA23
VA5
VCP
VD5
VA3
VDP3
VD3
VD3
IC3
IC6
IC2
Power Supply Circuit
Q1~Q3,Q7,D105,203
VC
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)
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
FI
KC
SI
21
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

– 9 –
Keyboard PCB M802-KYA1
Top View
Bottom View
Keyboard PCB M802-KYA2
Top View
Bottom View

– 10 –
DIAGNOSTIC PROGRAM
 Initial Setting
1. Connect the AC adaptor.
2. "Main" volume: MAX
3. Prepare a PC with USB cable connected for USB check.
 How to start diagnostic program
1. Press and hold the "0", "1" and "2" buttons.
2. Press the "POWER" button.
3. The massage "TESTMODE" is appears on LCD.
TESTMODE
4. Release the "0", "1" and "2" buttons.
 Diagnostic program
1. Button check
 Press "1" button.
 Press the button in the order indicated in the illustration below.
The button number will be displayed on the LCD.
Example) SW00 + (the button number shown in the illustration)
If the switch function is OK: You will hear the OK sound signal and the button number will be displayed.
If the switch function is NG or switches were pressed in a wrong order: You will hear the NG sound signal
and the button number will be displayed.
23
25
24
21
04 05 06 07 08 20 0A 09 0E 0B 0C 0F 0D 10 11 12 13 22 26
02
01
00 1B
18
15
14
1C
19
16
1F
1D
1A
17
OK
 Press the "+" button the last.
 Press "0" to end the Button Check.
1:SW
1:SW OK!
TEST 1-9

– 11 –
2. AC adaptor check
 Press "3" button.
Make sure that a value "XXX" shown in the illustration is in
the range of 000 to 3FF.
 Press "3" button.
Make sure that a value "XXX" shown in the illustration is in
the range of 000 to 1FF.
 Press "0" to end the AC adaptor Check.
3. Memory check
 Press "5" button. (ROM check)
 Press "1" button.
* Check for "OK" message and sound signal.
 Press "0" to end the ROM Check.
 Press "6" button. (RAM check)
 Press "1" button.
* Check for "OK" message and sound signal.
 Press "0" to end the RAM Check.
3:AD1 XXX
000 to 3FF
3:AD3 XXX
000 to 1FF
6:MEM
5:ROM
OK
OK
TEST 1-9
TEST 1-9
TEST 1-9

– 12 –
4. ROM Version and Model check
 Press "9" button. (ROM Version)
"6501" must be displayed.
 Press "9" button. (Model)
"MX804" must be displayed.
 Press "0" to end the ROM Version and Model Check.
5. LCD check
 Press "2" button.
 Press "2" button.
* All dots and characters of LCD turn on.
* There is no lack of the dot and the charater.
 Press "2" button.
* LCD no display.
 Press "0" to end the LCD Check.
6. USB check
* Operating System
Windows® XP (SP2 or later)*1
Windows Vista® *2
Mac OS® X (10.3.9, 10.4.11 or later, 10.5.2 or later)
*1: Windows XP Home Edition
Windows XP Professional (32- bit)
*2: Windows Vista (32- bit)
 Connect CTK-4000 to the computer with a USB cable.
 Check that the message "USB AUDIO DEVICE" appears in "Device Manager" → "Sound, Video and
Game Controller" on the computer monitor.
 Disconnect the USB cable.
 Check that the message "USB AUDIO DEVICE" disappears in "Device Manager" → "Sound, Video and
Game Controller" on the computer monitor.
DIAGNOSTIC PROGRAM IS FINSHED.
6501
MX 804
2:LCD
TEST 1-9
TEST 1-9

– 13 –
EXPLODED VIEW
(-) (+)
(-) (+)
7
8
5
11
9
12
10
34
15
16
31
31
13
3
1
2
20
24
19
18
17
23
22
21 25
4
42
40
R-1
29
30
28
2-1
2-2
40
33 32
40
35
35
36
37
41
R-2
39
39
38
41
R-3
R-4
R-5
27
26
14
6

– 14 –
Notes: This parts list does not include the cosmetic parts,
which parts are marked with item No. “R-X” in the
exploded view.
Contact our spare parts department if you need
these parts for refurbish.
1. Prices and specifications are subject to change
without prior notice.
2. As for spare parts order and supply, refer to
the “GUIDEBOOK for Spare parts Supply”,
published seperately.
3. The numbers in item column correspond to the
same numbers in drawing.
PARTS LIST
CTK-4000

– 15 –
1 CTK-4000_DI
2 CTK-4000_CHINA
3 CTK-4000_EU
4 CTK-4000_UK
5 CTK-4000_US
12345
Main PCB
N1 10310574 PCB ASSY/MDA1 TK-RJM508908*001 1 1 1 1 1 DH A
CN7 10236622 CONNECTOR USB-4FBRS30NB2 1 1 1 1 1 AC X
D1-D4 10276977 DIODE L1SS400T1G 4 4 4 4 4 AA X
IC5 10211950 IC NJM2068M-D(TE1) 1 1 1 1 1 AC C
IC8 10197554 IC TC7SZ126FU(TE85L.F 1 1 1 1 1 AE C
IC4 10197809 IC TC7WH123FU(TE12L.F 1 1 1 1 1 AE C
IC2 10098821 IC XC6202P332PR 1 1 1 1 1 AD C
IC6 10269340 IC XC6403FY51PR 1 1 1 1 1 AE C
IC9 10299049 LSI LP62S16256GV55LLIF 1 1 1 1 1 BX C
NIC1 10305133 LSI MR27T12802L11ATA3A 1 1 1 1 1 BN C
L11 10193074 COIL DLW21HN181SQ2L 1 1 1 1 1 AC X
L2,4,10 10089941 COIL BLM21PG221SN1D 3 3 3 3 3 AA X
L3 10238668 COIL EBMS160808A102 1 1 1 1 1 AA X
Sub PCB
N2 10310575 PCB ASSY/PSA1 TK-RJM508909*001 1 1 1 1 1 CX B
N2-1 10206832 WIRE 1007TASC24140W4040 1 1 1 1 1 AA XWhite(+)
N2-2 10206831 WIRE 1007TASC24140G4040 1 1 1 1 1 AA XGreen(-)
FU4 10236708 FUSE 25H1000G 1 1 1 1 1 AC C
FU3 10307615 FUSE 25H1250G 1 1 1 1 1 AC C
IC1 10300598 IC TA8227APL-D12-H-T 1 1 1 1 1 AG C
J2 10088189 CONNECTOR DS-240A2-383V4H 1 1 1 1 1 AC CDC jack
J5 10206815 CONNECTOR JY-6314*01-030 1 1 1 1 1 AA CPedal jack
J4 10305218 CONNECTOR JY-6316B*01-070 1 1 1 1 1 AI CPhone jack
J3 10305131 CONNECTOR ST-3529B 1 1 1 1 1 AO C
L3,4 10231919 COIL RB53-856396NP 2 2 2 2 2 AA X
L2,5 10231920 COIL RB53-856397NP 2 2 2 2 2 AA X
Q3 10206676 TRANSISTOR KTC2026-Y-U/P 1 1 1 1 1 AB X
D103,202,203 10276977 DIODE L1SS400T1G 3 3 3 3 3 AA X
D105 79114195 DIODE UDZSTE-175.6B 1 1 1 1 1 AA X
IC2,3,4 10211950 IC NJM2068M-D(TE1) 3 3 3 3 3 AC X
Q1 10216428 TRANSISTOR KTA1666-Y-RTF/P 1 1 1 1 1 AB X
Q2,7 10207675 TRANSISTOR KTC4075-GR-RTK/P 2 2 2 2 2 AA X
Console PCBs
N3 10310578 BL ASSY TK-RJM508713*001 1 1 1 1 1 DH C
IC2 10159709 LSI UPD65881GK-1019ETA 1 1 1 1 1 AT C
VR1 69304870 VARIABLE R EVND8AA03B53 1 1 1 1 1 AA C
X1 10093909 CERAMIC OSCILLATOR CSBLA1M00J58-B0 1 1 1 1 1 AC X
D4,5 10209564 LED KPTD-3216SURCK 2 2 2 2 2 AA X
IC1 10222381 LSI ST7066U-0A-QG 1 1 1 1 1 AU X
Q2,3 10202670 TRANSISTOR KTA2014-GR-RTK/P 2 2 2 2 2 AA X
Q1 10207675 TRANSISTOR KTC4075-GR-RTK/P 1 1 1 1 1 AA X
N4 10310579 PCB ASSY/CNB2 TK-RJM508910*001 1 1 1 1 1 CG C
VR1 10273794 VARIABLE RESISTOR F-09KGH1-CASIO-2 1 1 1 1 1 AO X
Keyboard PCB
s
5 10304697 PCB ASSY/KEY/RUBER TK-RJM508598*001 1 1 1 1 1 CJ C
610304698 PCB ASSY/KYA TK-RJM508618*001 11111 CE C
D1-D61 10294400 DIODE LM1MA142WKT1G 61 61 61 61 61 AA X
N Item Parts NO. Parts Name RemarksSpecification Q'TY Price
Code R

– 16 –
1 CTK-4000_DI
2 CTK-4000_CHINA
3 CTK-4000_EU
4 CTK-4000_UK
5 CTK-4000_US
12345
Keyboard Uni
t
710269451 RUBBER/CONTACT/CB RJM507656-001V01 44444 AG B
810270393 RUBBER/CONTACT/CS RJM507657-001V01 11111 AG B
9 10249864 WHITE KEY/CB TK-RJM507243*001 4 4 4 4 4 BB C
10 10249865 WHITE KEY/CS TK-RJM507244*001 1 1 1 1 1 BD C
11 10274032 BLACK KEY/10P RJM506595-001V02 2 2 2 2 2 AL C
12 10247548 BLACK KEY/5P RJM506595-002V01 1 1 1 1 1 AE C
Case Uni
t
13 10131110 REFLECTOR RJM502577-001V01 1 1 1 1 1 AC C
N 14 10308432 LED SLR343BD2T3F 2 2 2 2 2 AS C
N 15 10305395 PLATE/DISPLAY RJM508689-001V01 1 1 1 1 1 AH C
N 16 10187478 KNOB/ROTARY RJM502503-005V02 1 1 1 1 1 AG C
N 17 10305382 RUBBER KEY/A RJM508680-001V01 1 1 1 1 1 AH C
N 18 10305384 RUBBER KEY/B RJM508681-001V01 1 1 1 1 1 AJ C
N 19 10305385 RUBBER KEY/C RJM508682-001V01 1 1 1 1 1 AK C
N 20 10305387 RUBBER KEY/D RJM508683-001V01 1 1 1 1 1 AK C
N 21 10305389 RUBBER KEY/E RJM508684-001V01 1 1 1 1 1 AK C
N 22 10305390 RUBBER KEY/F RJM508685-001V01 1 1 1 1 1 AH C
N 23 10305391 RUBBER KEY/G RJM508686-001V01 1 1 1 1 1 AK C
N 24 10305393 RUBBER KEY/H RJM508687-001V01 1 1 1 1 1 AH C
N 25 10308433 LCD TY11239N-C0025/08 1 1 1 1 1 BL C
26 10203058 CONNECTOR RJM505822-001V01 2 2 2 2 2 AD C
27 10037738 SPONGE M441167-1 2 2 2 2 2 AA C
28 10131094 TOP PIECE RJM502565-001V01 1 1 1 1 1 AA C
29 10250780 FILM RJM507061-001V01 1 1 1 1 1 AA C
30 10248119 PLATE/BL RJM506818-001V01 1 1 1 1 1 AL C
31 10272063 SPEAKER C12J03 2 2 2 2 2 AP C
N 32 10309816 WIRE 1007TASC24360B3030 1 1 1 1 1 AA X SP RIGHT+
N 33 10309817 WIRE 1007TASC24370T3030 1 1 1 1 1 AA X SP RIGHT-
N 34 10310573 COVER ASSY/BATTERY TK-M341288*005 1 1 1 1 1 BL C
35 69226920 FOOT/RUBBER M41361-6 2 2 2 2 2 AA X
N 36 10301471 CUSHION RJM508593-001V01 1 1 1 1 1 AJ C
N 37 10304864 DAMPER/KB RJM507745-002V01 1 1 1 1 1 AC C
N 38 10205015 CUSHION M440342-001V02 1 1111 AC C
39 69226920 FOOT/RUBBER M41361-6 2 2 2 2 2 AA C
N 40 10263728 PACKING M441117-001V02 3 3 3 3 3 AB X
41 10214396 PACKING RJM506032-001V01 2 2 2 2 2 AA X
N 42 10136565 PACKING M441190-002V01 1 1 1 1 1 AH X
ACCESSORIES
- 10107083 STAND/MUSIC M141071-5 1 1 1 1 1 AW C
REFURBISH
N R-1 10310576 CASE ASSY/UPPER TK-RJM508712*001 1 1 1 1 1 DE C
N R-2 10313608 CASE UNIT/MAIN TK-RJM508715*001 1 1 1 1 1 DE C
R-3 10302799 L COVER/A RJM508655-001V01 1 1 1 1 1 AD C
R-4 10302800 L COVER/B RJM508656-001V01 1 1 1 1 1 AD C
R-5 10302801 L COVER/C RJM508657-001V01 1 1 1 1 1 AD C
RemarksSpecification Q'TY Price
Code RN Item Parts NO. Parts Name

– 17 –
SCHEMATIC DIAGRAMS
Main PCB M804-MDA1
Not used:
pin12 to pin15

– 18 –
Sub PCB M804-PSA1
Not used