Casio AP400 Service Manual

(without price)

AP-400

INDEX

JUL. 2008

AP-400

ELECTRONIC KEYBOARD

Ver.1 : May. 2005

SPECIFICATIONS

Keyboard

Maximum Polyphony

Tones

Effects

Metronome

Beats Tempo Range

Duet

Music Library

Number of Songs Song volume Part On/Off

Recorder

Number of Song Number of Tracks Capacity Recorded Data Protection

Pedals

Other Functions

Touch Select Transpose Tuning Operation Lock

MIDI

Inputs/Outputs

PHONES jack

MIDI OUT/IN terminals Pedal connector

Speakers

Power Requirements

Power Consumption

Dimensions

Weight

88-key piano keyboard, with Touch Response

128 notes

11

Layer (excluding bass tones)

Split (Low-range bass tones only)

Brilliance (–3 to 0 to 3), Reverb (4 types), Chorus (4 types), Acoustic Resonance

0, 2, 3, 4, 6 20 to 255 5

Adjustable tone range (–2 to 0 to 1 octaves)

60 Adjustable L, R

Functions: Real-time recording, playback 1 2 Approximately 5,000 notes total Built-in ﬂash memory

Damper, soft, sostenuto

3 types, Off ±1 octaves (–12 to 0 to 12) A4 = 440.0 Hz ±99 cents (variable)

16-channel multi-timbre receive

Stereo standard jacks × 2 Output impedance: 470Ω Output Voltage: 22V (RMS) MAX

12cm × 2 + φ5cm × 2 (Output 20W + 20W)

φ

120V

60W

Digital Piano and Stand: 139.5 (W) × 42.7 (D) × 83.8 (H) cm

15

(54

/16× 16 13/16× 33 inch)

Digital Piano and Stand: approximately 44.5 kg (98.1 lbs)

– 1 –

BLOCK AND WIRING DIAGRAM

Power Switch

SD-RAM (64Mbit)

IC2

Reset IC

IC1

RESET

12MHz

SDA0 ~ SDA12,

SDBA0,SDBA1

SDD0 ~ SDD15

D8 ~ MD15

Power Amplifier

IC401

FLASH (128Mbit)

IC6

PS-RAM (16Mbit)

IC7

A1 ~ A20

D0 ~ D15

Keyboard Keyboard Keyboard

Power Supply Circuit

D401~D408,

IC402,D201,D202,

C202,C212,C209,

D219,D220

Q202~Q205 IC403,C220,C229 ,C299,D221,D222

VA12VD5 VF VC

SpeakerTweeter

(L)

Speaker Tweeter

(R)

Main Volume

CONSOLE PCB

(M333-CNA1)

CONSOLE PCB (

M333

-CNA4)

Keyboard PCB (MCZS-KYB1)

Keyboard PCB

(MCZS-KYC1)

Keyboard PCB

(MCZS-KYA1)

SUB PCB (M334-PSA1)

CONSOLE PCB (M

333

-CNA3)

CONSOLE PCB

(M333-CNA2)

Phones

MIDI

POWER SUPPLY PCB (

M420-ACA1

)

MAIN PCB (M334-MDA1)

Buttons/LEDs

LOUT

ROUT

MPU

IC5

Control signal

SIN2/SOUT2

DAC

IC10

SI0 ~ SI10

FI0 ~ FI10

KC0 ~ KC7

KEY CONTROLLER

IC11

LOW-NOISE

OPERATIONAL

AMPLIFIER

IC404,IC405,

Q208~Q211,

D223~D226

Power

Transformer

T1

C1,L1

Fuse

FU1

Pedal

CN9CN2

CN211 CN212 CN601

CN605

CN803

CN804 CN805

CN802 CN801

CN602

CN205 CN206

CN203 CN202

CN208

CN611

CN11

CN606 CN201

CN209

CN14

– 2 –

PCB LAYOUT

M334-PSA1 PCB M333-CNA3 PCB

M334-MDA1 PCB

M333-CNA1 PCB

M333-CNA4 PCB

M333-CNA2 PCB

MCZS-KYA1 PCB MCZS-KYB1 PCB MCZS-KYC1 PCB

Transformer

MAIN PCB N334-MDA1 MPU, Reset IC, SD-RAM(64Mbit), PS-RAM(64Mbit),

SUB PCB M334-PSA1 Power supply circuit, Power amplifer

Console PCBs M333-CNA1 MIC volume, Button

Keyboard PCBs MCZS-KYA1 Keyboard

PCB Components

M333-CNA2 Phones terminal

M333-CNA3 MIC terminal

M333-CNA4 Power LED

MCZS-KYB1

MCZS-KYC1

FLASH memory(128Mbit), DAC, Key controller

– 3 –

KEY MATRIX

F#3G#3 A#3 C#4 D#4 F#4G#4A#4 C#5D#5 F#5 G#5A#5

F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6

D#3

C2 D2 E2 F2 G2 A2 B2 C3 D3 E3

B6A6G6F6E6D6 C7

C#3A#2G#2F#2D#2C#2

C1 D1 E1 F1 G1 A1 B1A0 B0

A#1A#0 G#1F#1D#1C#1 A#6G#6F#6D#6C#6

B7A7G7F7E7D7 C8

A#7G#7F#7D#7C#7

FI0 A0

SI0 A0

FI1 F1

SI1 F1

FI2 C2#

SI2 C2#

FI3 A2

SI3 A2

FI4 F3

SI4 F3

FI5 C4#

SI5 C4#

FI6 A4

SI6 A4

FI7 F5

SI7 F5

FI8 C6#

SI8 C6#

FI9 A6

SI9 A6

FI10 F7

SI10 F7

CIRCUIT DESCRIPTION

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7













































A0#

F1#

D2

A2#

F3#

D4

A4#

F5#

D6

A6#

F7#













































B0

G1

D2#

B2

G3

D4#

B4

G5

D6#

B6

G7













































C1

G1#

E2

C3

G3#

E4

C5

G5#

E6

C7

G7#













































C1#

A1

F2

C3#

A3

F4

C5#

A5

F6

C7#

A7













































D1

A1#

F2#

D3

A3#

F4#

D5

A5#

F6#

D7

A7#













































D1#

B1

G2

D3#

B3

G4

D5#

B5

G6

D7#

B7













































E1

C2

G2#

E3

C4

G4#

E5

C6

G6#

E7

C8













































NOMENCLATURE OF KEYS

BUTTON MATRIX

SWB SWC SWD SWE

SI0

SI1 L / R RECORDER CLASSIC

SONG

/





MODERN

– 4 –

METRONOME

TONE/

SETTING

– 5 –

PRINTED CIRCUIT BOARDS

Main PCB M334-MDA1

Top View

Bottom View

– 6 –

Sub PCB M334-PSA1

Top View

Bottom View

– 7 –

Console PCB M333-CNA1

Top View

Bottom View

– 8 –

Top View

Console PCB M333-CNA2

Bottom View

Console PCB M333-CNA3

Top View

Bottom View

Top View

Console PCB M333-CNA4

Bottom View

Power supply PCB M420-ACA1

– 9 –

Keyboard PCB MCZS-KYA1

Keyboard PCB MCZS-KYB1

Keyboard PCB MCZS-KYC1

DISASSEMBLY

1. Remove the AC adaptor, Pedal cord and Music stand.

2. To damage neither the ﬂoor nor the main body, the main body is put on the mat or the blanket, etc.

Music stand

Connector (AC)

3. Remove three screws.

4. Remove the top board.

Pedal cord

– 10 –

5. Remove two screws and two stoppers on the left and right ends.

6. Remove the key cover.

Stoppers

– 11 –

Key cover

7. Remove the twist ties that hold the cables in place.

M420-ACA PCB

Transfomer

M334-PSA1 PCB

M334-MDA1 PCB

8. Removing the M334-MDA1 PCB

8-1. Remove three connectors.

8-2. Remove the connector, release the lock and then remove the FPC.

8-3. Remove four screws and the M334-MDA1 PCB.

Connector

(M334-PSA1)

Connector

(Keyboard)

Connector

(M333-CNA1)

M333-CNA3 PCB

Connector

(Pedal)

9. Removing the M333-PSA1 PCB, M420-ACA PCB and Transfomer

9-1. Remove eight connectors.

Speaker (L)

(Tweeter)

Speaker (L)

(Main)

Connector

(M333-CNA2)

Speaker (R)

(Main)

– 12 –

Connector

(M333-CNA4)

Speaker (R)

(Tweeter)

Connector

(M333-CNA3)

Connector

(M333-CNA1)

9-2. Remove 16 screws and the M333-PSA1 PCB, M420-ACA PCB and Transfomer.

M420-ACA PCB

Transfomer

M334-PSA1 PCB

10. Removing the M333-CNA3 PCB and Pedal connector

10-1. Remove ﬁve screws and the M333-CNA3 PCB and Pedal connector.

M333-CNA3 PCB

Pedal connector

10-2. Remove three screws and the M333-CNA3 PCB.

– 13 –

M333-CNA3 PCB

11. Remove 12 screws and four speakers.

12. Remove six screws and the CN-PANEL.

CN-PANEL

– 14 –

13. Removing the M333-CNA4 PCB

13-1. Remove six screws and the front board assy.

13-2. Remove two screws and the M333-CNA4 PCB.

M333-CNA4 PCB

14. Removing the Side block

14-1. Remove four screws (left and right).

14-2. Remove the side units (left and right).

– 15 –

15. Disassembling the left side unit (M333-CNA1 PCB, M333-CNA2 PCB)

15-1. Remove two screws and the M333-CNA2 unit.

15-2. Remove two nuts and the M333-CNA2 PCB.

15-3. Remove four screws.

15-4. Remove the volume knob and the rubber key and M333-CNA1 PCB.

Rubber key

M333-CNA2 PCB

16. Disassembling the right side unit (Power switch)

16-1. Remove two screws and the Power switch.

M333-CNA2 PCB

Power switch

– 16 –

17. To remove the Keyboard

17-1. Remove four screws and then four brackets.

17-2. Remove eight screws and then the I-BRACKET.

I-BRACKET

– 17 –

17-3. Remove 24 screws and then the KEY-BOARD ASSY.

17-4. Remove the keys.

Caution while assembling the keys.

• Set the key as shown in ﬁgures below.

– 18 –

17-5. Remove nine screws then the MCZS-KYC1 PCB.

17-6. Remove 12 screws then the MCZS-KYB1 PCB.

17-7. Remove nine screws then the MCZS-KYA1 PCB.

MCZS-KYA1

(Nine screws)

MCZS-KYB1

(12 screws)

19-8. Remove eight rubber keys.

* One of the keys has the different length from others.

MCZS-KYC1

(Nine screws)

* How to install the rubber keys.

– 19 –

DIAGNOSTIC PROGRAM

Initial Setting



1. Connect the AC adaptor.

2. Connect the pedal. NOTE: If there is no pedal, pedal check can be skipped.

3. “Main” volume: MAX

How to start diagnostic program



1.

While pressing down “METRONOME”, “RECORDER”, and “SONG (/)” buttons at the same time, turn the power ON.

Wait for conﬁrmation chords C4, E4, G4 sound.

2. Release

Diagnostic program



1. Automatic Test

The LEDs light in thesequence shown below

RAM check



ROM check



LED check



“METRONOME”, “RECORDER”, and “SONG (/)” buttons

“L / R”

or

“/”

lights when an error is found in ROM.

2. Sound check

When standing in the center, the tester hears the maximum test sound from the speakers.

3. MODEL check

The conﬁrmation chords C4, E4, G4 sounds.

“CLASSIC” LED ﬂashes.

Press the “



Press the [RECORDER] button again to stop the sound.



Press “TONE/SETTING” button to perform the “MODEL check.”



RECORDER

” button to perform the “Sound check.”

– 20 –

4. ROM version check (Internal ROM, External ROM)

Press “TONE/SETTING” button to perform the “ROM check (Internal ROM).”



The conﬁrmation chords C4, E4, G4 sounds.

Each time “



SONG (/)

” button is pressed, the different LEDs light.

Conﬁrm with the lit LED.

Press “TONE/SETTING” button to perform the “ROM check (External ROM).”



The conﬁrmation chords C4, E4, G4 sounds.

Each time “



SONG (/)

” button is pressed, the different LEDs light.

Conﬁrm with the lit LED.

LED Status > 0 : “

SONG (/)

” LED 1 : “MODERN” LED

2 : “CLASSIC" LED 3 : “RECORDER” LED

4 : “R” LED 5 : “L” LED

6 : “L + MODERN” LED 7 : “L + CLASSIC” LED

8 : “L + RECORDER” LED 9 : “L + R” LED

Internal ROM (0712110915): 0→7→1→2→1→1→0→9→1→5

External ROM (0712110915): 0→7→1→2→1→1→0→9→1→5

Internal ROM LED Sequence External ROM LED Sequence

1: (0) “

SONG (/)

” LED 1: (0) “

SONG (/)

” LED

2: (7) “L + CLASSIC” LED 2: (7) “L + CLASSIC” LED

3: (1) “MODERN” LED 3: (1) “MODERN” LED

4: (2) “CLASSIC” LED 4: (2) “CLASSIC” LED

5: (1) “MODERN” LED 5: (1) “MODERN” LED

6: (1) “MODERN” LED 6: (1) “MODERN” LED

7: (0) “

SONG (/)

” LED 7: (0) “

SONG (/)

” LED

8: (9) “L + R” LED 8: (9) “L + R” LED 9: (1) “MODERN” LED 9: (1) “MODERN” LED

10: (5) “L” LED 10: (5) “L” LED

5. BUTTON check

Press “TONE/SETTING” button to perform the “BUTTON check.”



The conﬁrmation chords C4, E4, G4 sounds.

Press the buttons in the order indicated in the illustration on the right.



A buzzer sounds if buttons are pressed in a wrong order. This check cannot be aborted in mid-course.

– 21 –

6. Pedal check (If there is no pedal, pedal check can be skipped.)

Press “TONE/SETTING” button to perform the “Pedal check”.



The conﬁrmation chords C4, E4, G4 sounds.

Press the “SOFT” pedal.



The conﬁrmation chord E4 sounds and “MODERN” LED lights.

Press the “SOSTENUTO” pedal.



The conﬁrmation chord G4 sounds and “MODERN” LED lights.

Press the “DAMPER” pedal.



The conﬁrmation chord C4 sounds and “CLASSIC” LED lights.

7. Headphone check

Press “TONE/SETTING” button to perform the “Headphone check.”



The conﬁrmation chords C4, E4, G4 sounds and “L” LED lights.

Connect the headphone to the jack.



“R” LED lights.

Press the “A4” key.



Remove the headphone from the jack.



“L” LED lights.

There are 2 headphone jacks. Repeat Steps  →  →  for each jack.



Press “TONE/SETTING” button to ﬁnish the “headphone check.”



The conﬁrmation chords C4, E4, G4 sound and the light on "L" LED turns off.

8. MIDI check (If there is no MIDI cable, this check can be skipped.)

Press “TONE/SETTING” button to perform the “MIDI check.”



The conﬁrmation chords C4, E4, G4 sound and the light off LED.

Connect the MIDI cable.



Press the “A4” key.



The conﬁrmation chords C4, E4, G4 sounds.

Remove the MIDI cable.



Press “TONE/SETTING” button.



The conﬁrmation chords C4, E4, G4 sounds.

Press “TONE/SETTING” button.



The conﬁrmation chords C4, E4, G4 sound twice.

9. FLASH MEMORY check

Hold down “RECORDER” button to perform the “FLASH Memory Check”.



“RECORDER” LED ﬂashes Then the light on "RECORDER" LED turns off and the conﬁrmation chords C4, E4, G4 sound.

The diagnostic program ends.

Turn off the power to complete the checking.

– 22 –

35

36

34

32

33

24

4

36

12

8

23

24

20

22

21

30

29

28

26

27

31

38

37

39

40

44

37

7

13

8

25

7

16

41

42

43

44

11

10

9

18

19

5

1

2

3

17

6

14

17

6

15

4-1

EXPLODED VIEW

– 23 –

x4

x4x6

x1

x2

x1

x2

71

70

75

76

74

77

69

68

45

65

46

63

61

66

62

52

48

59

60

57

58

51

56

55

54

47

50

49

53

64

72

78

73

67

– 24 –

PARTS LIST

AP-400

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.

– 25 –

1 AP-400_DI_120V 6 AP-400CY_DI_120V

1 2 3 4 5 6 7 8 9 10

MAIN PCB

N 1 10310156

PCB ASSY/MAIN TK-RJM508426*001 1 1 1 1 1 1 1 1 1 1 DL A

F6,F7 10122975

NETWORK/R-C EZASSB516BJ 2 2 2 2 2 2 2 2 2 2 AA C

F2,3,4,5,9,

10,11

10122976 NETWORK/R-C EZASTB63ABJ 7 7 7 7 7 7 7 7 7 7 AA C

F8 10132152

EMI FILTE

R

NFW31SP106X1E4L 1 1 1 1 1 1 1 1 1 1 AI C

IC10 10256338

IC CS4351-CZZ

R

1 1 1 1 1 1 1 1 1 1 AS C

IC1

10241413

IC R1151N001C-TR-F 1 1 1 1 1 1 1 1 1 1 AE C

IC8

10123002

IC TC74VHC174FT

(EL)

1 1 1 1 1 1 1 1 1 1 AD C

IC9

10258396

IC TC74VHC541FT

(

EL.K)1 1 1 1 1 1 1 1 1 1 AE C

IC5

10255468

LSI MB91F036PFF-GE1 1 1 1 1 1 1 1 1 1 1 CB C

IC11

10253886

LSI UPD65942GA-Y299EU

A

1 1 1 1 1 1 1 1 1 1 AXC

IC7

10262261

MEMOR

Y

MB82D01181E60LPBNE 1 1 1 1 1 1 1 1 1 1 BC C

IC2

10284633

MEMOR

Y

MD56V62162J75TA03A1 1 1 1 1 1 1 1 1 1 BC C

IC6

10284634

MEMOR

Y

NAND128W3A2BN6E 1 1 1 1 1 1 1 1 1 1 BI C

L8,11,12,

18,19

10095204 COIL BLM18AG102SN1D 5 5 5 5 5 5 5 5 5 5 AA C

L13,16,17

10122963

COIL BLM21AG102SN1D 3 3 3 3 3 3 3 3 3 3 AC C

Q1

22592764

TRANSISTOR 2SB1188T100Q 1 1 1 1 1 1 1 1 1 1 AB C

Q2

10202670

TRANSISTOR KTA2014-GR-RTK/P 1 1 1 1 1 1 1 1 1 1 AA C

X1

10133372

CRYSTAL OSCILLATOR SMD-49-12M 1 1 1 1 1 1 1 1 1 1 AI C

N

CN2

10284753

HARNESS JB20-13P-6-M681 1

1 1 1 1 1 1 1 1 1 AV C

PS1 PCB

N 2 10310157 PCB ASSY/PSA1J TK-RJM508401*001 1 1 1 1 C

X

B 120V

N 2 10310158 PCB ASSY/PSA1E TK-RJM508797*001 1 1 1 1 1 1 C

X

B 230V

D405,406,

407,408

10209182 DIODE 1N5401-F80 4 4 4 4 4 4 4 4 4 4 AA X

D401,402,

403,404

10209183 DIODE PS201-F99 4 4 4 4 4 4 4 4 4 4 AA X

FU401 10052231 FUSE 51MS010

L

1 1 1 1 AC C 120V

FU401 10054029 FUSE 50T010H 1 1 1 1 1 1 AC C 230V

FU402,403 10052230 FUSE 51MS040

L

2 2 2 2 AC C 120V

FU402,403 10054030 FUSE 50T040H 2 2 2 2 2 2 AC C 230V

IC401 10207559 IC LM4765T/NOPB 1 1 1 1 1 1 1 1 1 1 BC C IC402 21145796 IC NJM78M05F

A

1 1 1 1 1 1 1 1 1 1 AE

X

L202,203 10231920 COIL RB53-856397NP 2 2 2 2 2 2 2 2 2 2 AA

X

D201,202,

220,221,

222,227

10276977 DIODE L1SS400T1G 6 6 6 6 6 6 6 6 6 6 AA X

D228 10294395 PHOTO COUPLER PC900V0NIPX

F

1 1 1 1 1 1 1 1 1 1 A

X

IC404,40510211950 IC NJM2068M-D(TE1

)

2 2 2 2 2 2 2 2 2 2 AC C

N IC403 10305852 IC NJM78M12DL1A

(

TE1)1 1 1 1 1 1 1 1 1 1 AM C

Q202-207,

212-220

69300298 TRANSISTOR 2SC4081T106R 15 15 15 15 15 15 15 15 15 15 AA C

N Q208-211 10305853 TRANSISTOR KTD1304-RTK/P 4 4 4 4 4 4 4 4 4 4 AB C N D219 10307695 DIODE LUDZS5.6BT1G 1 1 1 1 1 1 1 1 1 1 AA

X

N D223-226 10308381 DIODE LUDZS7.5BT1G 4 4 4 4 4 4 4 4 4 4 AA

X

Q221 69409403 TRANSISTOR 2SA1576AT106R 1 1 1 1 1 1 1 1 1 1 AA C

SpecificationN Item Parts No. Parts Name Remarks

Q'TY

PRICE

CODE

R

2 AP-400_DI_230V 7 AP-400CY_DI_230V 3 AP-400_EU 8 AP-400CY_EU 4 AP-400_UK 9 AP-400CY_UK 5 AP-400_US 10 AP-400CY_US

– 26 –

1 AP-400_DI_120V 6 AP-400CY_DI_120V

1 2 3 4 5 6 7 8 9 10

MAIN CASE UNIT

3 10164284 PCB ASSY/ACA1U TK-RJM503880*001

1 1 1 1 BA C

120V

3 10164286 PCB ASSY/ACA1E TK-RJM503882*001

1 1 1 1 1 1 AZ C

230V

4 10164278 CORD ASSY/AC TK-RJM503864*002 1 1 1

1 AM C

120V

4 10100792 CORD SET INQ.1258

(1)

1 1 AP C

Korea

4 10045706 CORD SET EC2NC-M001

A

1 1 1 1 AM C

Korea/EU

4 10045707 CORD SET BC2NC-M001

A

1 1 BD C

UK

4-1 10164279 INLET ASSY/AC TK-RJM503865*001 1 1 1 1

1 1 AH C

230V

5 10224216 TRANSFORMER TE-427-1M1

A

1 1 1 1 BY C

120V

5 10224217 TRANSFORMER TE-427-2M1

A

1 1 1 1 1 1 DB C

230V

N 6 10305155 SPEAKER C05JT02

2 2 2 2 2 2 2 2 2 2 BI C

N 7 10305153 SPEAKER C12J05

2 2 2 2 2 2 2 2 2 2 B

X

C

8 10052226

NET M441205-1 2 2 2 2 2 2 2 2 2 2 AC

X

N 9 10310171

PCB ASSY/CNA3 TK-RJM508793*001 1 1 1 1 1 1 1 1 1 1 BS C

L605 10231919

COIL RB53-856396NP 1 1 1 1 1 1 1 1 1 1 AA

X

L604 10231920

COIL RB53-856397NP 1 1 1 1 1 1 1 1 1 1 AA

X

N CN605 10310371

HARNESS SAN-5P-34-M334 1 1 1 1 1 1 1 1 1 1 AM

X

10 10294354 BRACKET RJM508332-001V01

1 1 1 1 1 1 1 1 1 1 AF

X

11 10169597 BRACKET/JACK RJM504221-001V01

1 1 1 1 1 1 1 1 1 1 AA

X

12

10164047

HARNESS EH-2P-48-M42

0

1 1 1 1 1 1 1 1 1 1 AD C

for Left Speake

r

N 13

10309718

HARNESS EH-2P-59-M334

1 1 1 1 1 1 1 1 1 1 AH C

for Right Speake

r

N 14

10309719

HARNESS PH-2P-50-M334

1 1 1 1 1 1 1 1 1 1 AG C

for Left Tweete

r

N 15

10309720

HARNESS PH-2P-61-M334

1 1 1 1 1 1 1 1 1 1 AG C

for Right Tweete

r

N 16

10265692

HARNESS SMP-5P-25-MP

5

1 1 1 1 1 1 1 1 1 1 AP C

for PEDAL-UNIT

N 17 10256315 BRACKET/TW RJM507322-001V01

2 2 2 2 2 2 2 2 2 2 A

X

N 18 10305051 PACKING RJM508753-001V01

1 1 1 1 1 1 1 1 1 1 AQ

X

N 19 10305050 BRACKET/UL RJM508296-001V01

1 1 1 1 1 1 1 1 1 1 CB

X

N 20

10310173 CASE ASSY/MAIN TK-RJM508375*001 1 1 1 1 1 EG C

N 20

10310174 CASE ASSY/MAIN TK-RJM508375*002 1 1 1 1 1 EG C

Cherr

y

N 21 10294385 FRONT BOARD RJM508282-001V01

1 1 1 1 1 CO C

N 21 10305061 FRONT BOARD RJM508282-002V01

1 1 1 1 1 CO C

Cherr

y

N 22 10308909 BRACKET/KEY RJM505578-002V0

3

1 1 1 1 1 1 1 1 1 1 CL

X

N 23 10310172

PCB ASSY/CNA4 TK-RJM508795*001 1 1 1 1 1 1 1 1 1 1 BO C

24 10269833 RUBBER FOOT RJM507817-001V01

2 2 2 2 2 AA C

24 10263611 RUBBER FOOT SJ-1038

(

CLEAR

)

2 2 2 2 2 AG C

Cherr

y

25 10184475

STOPPER RJM505299-001V01 2 2 2 2 2 2 2 2 2 2 AB C

N 26 10310161

SIDE UNUT/L TK-RJM508278*002 1 1 1 1 1 1 1 1 1 1 CR C

27 10052232 KNOB/RTR M341402-1

1 1 1 1 1 1 1 1 1 1 AE C

28 10294361 SIDE BLOCK/L RJM508325-001V01

1 1 1 1 1 1 1 1 1 1 AR

X

29 10281445 RUBBER KEY RJM505783-002V0

2

1 1 1 1 1 1 1 1 1 1 AD C

N 30 10310169

PCB ASSY/CNA1 TK-RJM508627*001 1 1 1 1 1 1 1 1 1 1 CB C

N CN602 10284749

HARNESS SAN-8P-113-M681 1 1 1 1 1 1 1 1 1 1 AU

X

VR601 10273791

VARIABLE RESISTOR F-09KGH-CASIO-1 1 1 1 1 1 1 1 1 1 1 AJ

X

N CN601 10310374

HARNESS SAN-5P-80-M334 1 1 1 1 1 1 1 1 1 1 BE

X

D607-610 10276977

DIODE L1SS400T1G 4 4 4 4 4 4 4 4 4 4 AA

X

D601-606 10294401

LED LT2P71-81-M1-7049

5

6 6 6 6 6 6 6 6 6 6 AB

X

IC601,602 10294403

IC TC74VHC164F

(

EL.K.F

2 2 2 2 2 2 2 2 2 2 AN

X

SW601-607 10228658

SWITCH THVV502GAA 7 7 7 7 7 7 7 7 7 7 AA

X

N 31 10310170

PCB ASSY/CNA2 TK-RJM508630*001 1 1 1 1 1 1 1 1 1 1 B

X

C

J601,602 10126045

JACK JY-6360*04-09

0

2 2 2 2 2 2 2 2 2 2 AE

X

L601,602 10231919

COIL RB53-856396NP 2 2 2 2 2 2 2 2 2 2 AA

X

N CN611 10310375

HARNESS SCN-6P-80-M334 1 1 1 1 1 1 1 1 1 1 AV

X

N 32 10310162

SIDE UNIT/R TK-RJM508279*002 1 1 1 1 1 1 1 1 1 1 CG C

33 69245260 BUTTON/POWER M340318-1

1 1 1 1 1 1 1 1 1 1 AA C

N 34 10308907 SIDE BLOCK/R RJM508326-001V0

2

1 1 1 1 1 1 1 1 1 1 AP

X

N 35 10310163

SW ASSY/POWER TK-RJM508792*001 1 1 1 1 1 1 1 1 1 1 BI C

36 10294363 BRACKET/R RJM508404-001V01

2 2 2 2 2 2 2 2 2 2 AD

X

37 58614294 NUT USN-4015

2 2 2 2 2 2 2 2 2 2 AB C

N 38

10310159 PANEL ASSY/CN TK-RJM508376*001 1 1 1 1 1 CT C

N 38

10310160 PANEL ASSY/CN TK-RJM508376*002 1 1 1 1 1 CT C

Cherr

y

39 10294366

PLATE/NAME RJM508409-001V01 1 1 1 1 1 1 1 1 1 1 AH C

N 40 10305053

TAPE RJM507535-001V0

2

1 1 1 1 1 1 1 1 1 1 AB C

41

10294070 COVER ASSY/KEY TK-RJM508274*001 1 1 1 1 1 DO C

N 41

10310176 COVER ASSY/KEY TK-RJM508274*002 1 1 1 1 1 DJ C

Cherr

y

42 10211850

GEAR RJM505897-001V01 2 2 2 2 2 2 2 2 2 2 AA C

N 43

10294073 BOARD ASSY/TOP TK-RJM508275*001 1 1 1 1 1 DK C

N 43

10310175 BOARD ASSY/TOP TK-RJM508275*002 1 1 1 1 1 DF C

Cherr

y

44 10294353 BRACKET RJM508338-001V01

4 4 4 4 4 4 4 4 4 4 AB

X

Q'TY

PRICE

CODE

R RemarksN Item Parts No. Parts Name Specification

2 AP-400_DI_230V 7 AP-400CY_DI_230V 3 AP-400_EU 8 AP-400CY_EU 4 AP-400_UK 9 AP-400CY_UK 5 AP-400_US 10 AP-400CY_US

– 27 –

1 AP-400_DI_120V 6 AP-400CY_DI_120V

1 2 3 4 5 6 7 8 9 10

KEYBOARD UNIT

45 10298122 KEY ASSY TK-RJM506362*003 1 1 1 1 1 1 1 1 1 1 EF A 46 10204304 CHASSIS RJM505515-001V01

1 1 1 1 1 1 1 1 1 1 B

X

C

47 10135317 BLACK KEY RJM502797-001V01

36 36 36 36 36 36 36 36 36 36 AC

C

48

10135426 WHITE KEY/CEGB RJM502862-001V01

7 7 7 7 7 7 7 7 7 7 AT

C 4pcs-1se

t

49 10135427 WHITE KEY/DFA RJM502863-001V01

7 7 7 7 7 7 7 7 7 7 AQ

C 3pcs-1se

t

50 10135428 WHITE KEY/B RJM502794-001V01

1 1 1 1 1 1 1 1 1 1 AG

C

51 10135429 WHITE KEY/SA RJM502795-001V01

1 1 1 1 1 1 1 1 1 1 AJ

C

52

10135430 WHITE KEY/SC RJM502796-001V01

1 1 1 1 1 1 1 1 1 1 AJ

C

53

10208265 HAMMER ASSY/W1 TK-RJM506035*001

13 13 13 13 13 13 13 13 13 13 AF

C

54

10208266 HAMMER ASSY/W2 TK-RJM506036*001

13 13 13 13 13 13 13 13 13 13 AF

C

55

10208267 HAMMER ASSY/W3 TK-RJM506037*001

13 13 13 13 13 13 13 13 13 13 AF

C

56

10208269 HAMMER ASSY/W4 TK-RJM506038*001

13 13 13 13 13 13 13 13 13 13 AF

C

57

10208275 HAMMER ASSY/B1 TK-RJM506039*001

9 9 9 9 9 9 9 9 9 9 AE

C

58

10208281 HAMMER ASSY/B2 TK-RJM506040*001

9 9 9 9 9 9 9 9 9 9 AE

C

59

10208286 HAMMER ASSY/B3 TK-RJM506041*001

9 9 9 9 9 9 9 9 9 9 BJ

C

60

10208290 HAMMER ASSY/B4 TK-RJM506042*001

9 9 9 9 9 9 9 9 9 9 AE

C

61

37195442

CABLE N30315B1B05-UL2896 1 1 1 1 1 1 1 1 1 1 AO

C

62

10133656 RUBBER/CONATCT/AG RJM502920-001V01 7 7 7 7 7 7 7 7 7 7 AK C 63 10133635 RUBBER/CONTACT/GC RJM502921-001V01 1 1 1 1 1 1 1 1 1 1 AG C 64 10294093 CUSHION/HAMME

R

TK-RJM507910*001 1 1 1 1 1 1 1 1 1 1

CG

C

65 10294094 PCB ASSY/KEY TK-RJM506061*003 1 1 1 1 1 1 1 1 1 1

CU

C

66

10212699 FERRITE CORE K5ARP40X6.5X1

2

1 1 1 1 1 1 1 1 1 1 AS C

for CABLE

67 10078919 SPONGE M441328-001V01

1 1 1 1 1 1 1 1 1 1 AD C

STAND

N 68

10310177 SCREW SET TK-RJM508640*001 1 1 1 1 1 CC C

N 68

10310178 SCREW SET TK-RJM508640*002 1 1 1 1 1 BV C

Cherr

y

N 69

10310179 BOARD ASSY/L TK-RJM508738*001 1 1 1 1 1 DG C

N 69

10310164 BOARD ASSY/L TK-RJM508738*002 1 1 1 1 1 DF C

Cherr

y

N 70 10310165

BOARD ASSY/R TK-RJM508739*001 1 1 1 1 1

DF

C

N

70 10310166

BOARD ASSY/R TK-RJM508739*002 1 1 1 1 1

DF

C

Cherr

y

N 71 10309721

BACK BOARD RJM508304-003V01 1 1 1 1 1 DF C

N 71 10305075

BACK BOARD RJM508304-002V01 1 1 1 1 1 DF C

Cherr

y

72 10160973

FOOT RJM503826-001V01 4 4 4 4 4 4 4 4 4 4 AB

X

73 10203751

SCREW/TRUMPET M441270-001V0

2

8 8 8 8 8 8 8 8 8 8 AA

X

N 74

10310167 BOARD ASSY/PEDAL TK-RJM508301*002 1 1 1 1 1 DL C

N 74

10310168 BOARD ASSY/PEDAL TK-RJM508301*003 1 1 1 1 1 DL C

Cherr

y

75

10294106 BOARD ASSY TK-RJM508302*001 1 1 1 1 1 DI C

N 75

10310180 BOARD ASSY TK-RJM508302*002 1 1 1 1 1 DC C

Cherr

y

76 10263906 PEDAL ASSY TK-RJM507377*001

1 1 1 1 1 1 1 1 1 1 CL C

77 10212698 HARNESS SMR-5P-155-MP

5

1 1 1 1 1 1 1 1 1 1 AM C

78 10260690 ADJUSTER

FL-20-CR3-KE 1 1 1 1 1 1 1 1 1 1 AF

X

ACCESSORIES

- 10255460

MUSIC BOO

K

05PHCOSCOREWL1A

1 1 1 1 1 1 1 1 1 1 A

X

- 10294108

STAND ASSY/MUSIC TK-RJM504667*004 1 1 1 1 1 C

X

C

N - 10310181

STAND ASSY/MUSIC

TK-RJM504667*005 1 1 1 1 1 DA C

Cherr

y

RemarksSpecification

Q'TY

PRICE

CODE

RN Item Parts No. Parts Name

2 AP-400_DI_230V 7 AP-400CY_DI_230V 3 AP-400_EU 8 AP-400CY_EU 4 AP-400_UK 9 AP-400CY_UK 5 AP-400_US 10 AP-400CY_US

– 28 –

– 29 –

SCHEMATIC DIAGRAMS

Main PCB M334-MDA1 (1/2)

– 30 –

Main PCB M334-MDA1 (2/2)

– 31 –

Sub PCB M334-PSA1

– 32 –

Console PCB M333-CNA1

– 33 –

Console PCB M333-CNA2 Console PCB M333-CNA3 Console PCB M333-CNA4

– 34 –

Console PCB M420-ACA1 (250V) Console PCB M420-ACA1 (125V)

– 35 –

Keyboard PCB MCZS-KYA1

– 36 –

Keyboard PCB MCZS-KYB1

– 37 –

Keyboard PCB MCZS-KYC1

CASIO COMPUTER CO.,LTD.

Overseas Service Division

6-2, Hon-machi 1-Chome

Shibuya-ku, Tokyo 151-8543, Japan

Casio AP400 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

AP-400

CONTENTS

SPECIFICATIONS

BLOCK AND WIRING DIAGRAM

PCB LAYOUT

CIRCUIT DESCRIPTION

PRINTED CIRCUIT BOARDS

DISASSEMBLY

DIAGNOSTIC PROGRAM

EXPLODED VIEW

PARTS LIST

SCHEMATIC DIAGRAMS