Akai MPD18 User manual

Confidential Akai Service Manual
AKAI
MPD18
[AD17]
Service Manual
v1.0
2012.05.03
The information in this document contains privileged and confidential information. It is intended
only for the use of those authorized by Akai Professional. If you are not the authorized, intended
recipient, you are hereby notified that any review, dissemination, distribution or duplication of this
document is strictly prohibited. If you are not authorized, please contact Akai Professional and
destroy all copies of this document. You may contact Akai Professional at
[email protected].
Copyright Akai Professional
ATTENTION!
THIS DOCUMENT CONTAINS SENSITIVE
PROPRIETARY INFORMATION.
ALL RECIPIENTS MUST HAVE A CURRENT
NON-DISCLOSURE AGREEMENT ON FILE
WITH AKAI PROFESSIONAL.
DO NOT MAKE ILLEGAL
COPIES OF THIS DOCUMENT

Confidential Akai Service Manual
PREFACE
This document is intended to assist the service technician in the operation, maintenance and
repair of the Akai device. Together with the User Reference Manual, this document provides a
complete description of the functionality and serviceability of the Device. Any comments or
suggestions you may have pertaining to the document are welcome and encouraged.
READ THIS!
In addition to any purchase price that Akai may charge as consideration for Akai selling or
otherwise transferring this service manual (“Manual”) to you, if you are not a service and repair
facility (“Service Center”) authorized by Akai in writing to be an authorized Service Center, Akai
sells or transfers the Manual to you on the following terms and conditions:
Only Service Centers authorized by Akai in writing are authorized to perform service and repairs
covered by an Akai warranty (if any), and transfer of the Manual to you does not authorize you to
be an authorized Service Center. Therefore, if you perform, or if the Manual is used to
perform, any service or repairs on any Akai product or part thereof, any and all warranties
of Akai as to that product and any service contract with Akai for that product shall be
voided and shall no longer apply for such product, even if your services or repairs were
done in accordance with the Manual.
All service or repairs done by you or with reference to the Manual shall be solely your
responsibility, and Akai shall have no liability for any such repairs or service work. All such
service or repairs are performed at the sole risk of the person performing the service or
repairs. You agree that all such work will be performed in a competent, professional and safe
manner at all times and to indemnify and fully hold Akai and its successors and assigns harmless
in the event of any failure to so perform.
Your purchase of the Manual shall be for your own ultimate use and shall not be for purposes of
resale or other transfer.
As the owner of the copyright to the Manual, Akai does not give you the right to copy the Manual,
and you agree not to copy the Manual without the written authorization of Akai. Akai has no
obligation to provide to you any correction of, or supplement to, the Manual, or any new or
superseding version thereof.
Akai shall have the right to refuse to sell or otherwise transfer repair parts or materials to you in
its sole discretion. You shall not use, sell or otherwise transfer spare or replacement parts
supplied by Akai to you (i) to repair or be used in products manufactured for or by third parties or
(ii) to any third parties for any purpose.
You shall not make any warranties or guarantees with respect to the products of Akai or the use
thereof on behalf of Akai or in your own name.
The foregoing describes the entire understanding related to sale or transfer of the Manual to you,
and no other terms shall apply unless in a writing signed by an authorized representative of Akai.
All Trademarks are property of their respective companies.

Confidential Akai Service Manual
WARNINGS
TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE
THIS PRODUCT TO WATER OR MOISTURE.
The arrowhead symbol on a lightning flash inside a triangle is
intended to alert the user to the presence of uninsulated "dangerous
voltage" within the enclosed product which may be of sufficient
magnitude to constitute a risk of electric shock to persons.
The exclamation point inside a triangle is intended to alert the user
to the presence of important operating, maintenance and servicing
instructions in the literature which accompanies the product.
REPAIR BY ANY PERSON OR ENTITY OTHER THAN AN AUTHORIZED
AKAI SERVICE CENTER WILL VOID THE AKAI WARRANTY.
PROVISION OF THIS MANUAL DOES NOT AUTHORIZE THE RECIPIENT TO
COMPETE WITH ANY AKAI DISTRIBUTOR OR AUTHORIZED REPAIR
SERVICE CENTER IN THE PROVISION OF REPAIR SERVICES OR TO BE
OR MAKE REPAIRS AS AN AUTHORIZED SERVICE CENTER.
ALL REPAIRS DONE BY ANY ENTITY OTHER THAN AN AUTHORIZED AKAI
SERVICE CENTER SHALL BE SOLELY THE RESPONSIBILITY OF THAT
ENTITY, AND AKAI SHALL HAVE NO LIABILITY TO THAT ENTITY OR TO
ANY OTHER PARTY FOR ANY REPAIRS BY THAT ENTITY.
Regarding the Power Supply Fuse
CAUTION: The product under service may employ the use of a
replaceable fuse. Danger of fire or electrocution if fuse is incorrectly
replaced. Replace with only the same type or equivalent type
recommended by the equipment manufacturer.
Regarding the Internal Battery
CAUTION: The product under service may employ the use of a
internal battery. Danger of explosion if battery is incorrectly
replaced. Replace only with the same or equivalent type
recommended by the manufacturer. Dispose of used batteries
according to the manufacturer's instruction.

Confidential Akai Service Manual
Safety Instructions
Carefully read the applicable items of the operating instructions and these safety suggestions
before using this product. Use extra care to follow the warnings written on the product itself and in
the operating instructions. Keep the operating instructions and safety suggestions for reference in
the future.
1. Power Source. The product should only be connected to a power supply which is described
either in the operating instructions or in markings on the product.
2. Power Cord Protection. AC power supply cords should be placed such that no one is likely to
step on the cords and such that nothing will be placed on or against them.
3. Periods of Non-use. If the product is not used for any significant period of time, the product's
AC power supply cord should be unplugged from the AC outlet.
4. Foreign Objects and Liquids. Take care not to allow liquids to spill or objects to fall into any
openings of the product.
5. Water or Moisture. The product should not be used near any water or in moisture.
6. Heat. Do not place the product near heat sources such as stoves, heat registers, radiators or
other heat producing equipment.
7. Ventilation. When installing the product, make sure that the product has adequate
ventilation. Improperly ventilating the product may cause overheating, which may damage the
product.
8. Mounting. The product should only be used with a rack which the manufacturer
recommends. The combination of the product and rack should be moved carefully. Quick
movements, excessive force or uneven surfaces may overturn the combination which may
damage the product and rack combination.
9. Cleaning. The product should only be cleaned as the manufacturer recommends.
10. Service. The user should only attempt the limited service or upkeep specifically described in
the operating instructions for the user. For any other service required, the product should be
taken to an authorized service center as described in the operating instructions.
11. Damage to the Product. Qualified service personnel should service the unit in certain
situations including without limitation when:
a. Liquid has spilled or objects have fallen into the product,
b. The product is exposed to water or excessive moisture,
c. The AC power supply plug or cord is damaged,
d. The product shows an inappropriate change in performance or does not operate
normally, or
e. The enclosure of the product has been damaged.

AD17 Full BOM
Date: 9/26/2008
P/N Description Qty Ref. Des. Approved Mfr. Mfr's P/N PADsMfr.
TOP LEVEL
SHIPPING BOX (KRAFT BOX WITH BLACK SILKSCREEN) 0.5
GIFT BOX (1 COLOR KRAFT BOX) 1
PE BAG 370X280X.03 0.006
LAMINATE PRODUCT BAG 1
7-51-0226 SAFETY INSTRUCTIONS 1
QUICK START MANUAL AD17 (5.5" x 8.5", ~56 pages) 1
PAPER CD HOLDER 1
CD-ROM SOFTWARE USER APPLICATION AD17 1
CA040210002 CORD USB A-B L1000 BLACK + EMI COIL + USB 2.0 TAG
(1 METER)
1
LABEL (SERIAL NUMBER / BARCODE) 1
LABEL (SAFETY) 1
CARDBOARD PACKAGING ENDCAP (Same as AD16) 2
MECHANICALS
PLASTIC TOP PANEL (BLACK PAINT with 2 COLOR
SILKSCREEN)
1
PLASTIC BOTTOM PANEL (BLACK PAINT with NO
SILKSCREEN)
1
AA821460X METAL PAD SENSOR BRACKET (AD16) 1
9-30-0045 SILICON MPC PAD (GREY) 1
AA821466X PLASTIC SLIDER CAP (AD16) 1
PT1510619 PLASTIC SMALL PUSH BUTTONS (AD24) 6
RUBBER FOOT 4
PLASTIC LED STANDOFF 6
SCREWS 12
ELECTRICALS
OTM10030 16-POSITION SENSOR PAD 1

AD17 Full BOM
Date: 9/26/2008
P/N Description Qty Ref. Des. Approved Mfr. Mfr's P/N PADsMfr.
0-09-0057 POT 10KB STEREO SLIDE 45mm 1 P26 ALPS MFG CORPORATION
FORWARD ELECTRONICS
CO LTD.
RS45112-0620-C0-P1-B103
RF45112P6120-10K(2B)x2
(YN)
ALPS
0-10-0000 RES 0 OHM 1/8W 5% 1206 1 R27
0-12-0000 RES 0.0 OHM 1/10W 5% 0603 1 R42 Walsin Technology
Corporation
Digi-Key Corporation
Yageo
WR06X000P
311-0.0GRCT-ND
RC0603JR-070RL
0-15-0000 RES 0 OHM 1/10W 5% 0805 1 R9
0-15-0103 RES 10K OHM 1/10W 5% 0805 9 R5 R12
R16-17
R19-20
R23 R25
R28
0-15-0109 RES 1.0 OHM 1/10W 5% 0805 1 R15
0-15-0220 RES 22 OHM 1/10W 5% 0805 2 R35-36
0-15-0221 RES 220 OHM 1/10W 5% 0805 1 R10
0-15-0273 RES 27K OHM 1/10W 5% 0805 4 R6 R18
R21 R26
0-15-0363 RES 36K OHM 1/10W 5% 0805 1 R43
0-15-0471 RES 470 OHM 1/10W 5% 0805 4 R4 R8
R14 R24
0-15-0472 RES 4.7K OHM 1/10W 5% 0805 4 R3 R7
R11 R22
0-15-0473 RES 47K OHM 1/10W 5% 0805 1 R38
0-16-1501 RES 1.50K OHM 1/10W 1% 0805 1 R37
0-17-0221 RES CHIP ARRAY 4 X 220 OHM 1/16W 5% ISOLATED c-
c=0.8mm
2 R1-2 SKYWELL TECHNOLOGY
SEI ELECTRONICS
CTS
VENKEL
PANASONIC INDUSTRIAL
CO
RA03J221-4
RAC16-4D 220 5%
742C083221J
CRN16-4-221JCT
EXBV8V221J
TAD COMPONENTS,
INC.
0-17-8103 RES CHIP ARRAY 8x10K OHM 1/16W 5% COM-BUS c-
c=1.27mm SMD
1 R13 PANASONIC INDUSTRIAL
CO
EXBA10P103J

AD17 Full BOM
Date: 9/26/2008
P/N Description Qty Ref. Des. Approved Mfr. Mfr's P/N PADsMfr.
1-55-0561 CAP 560pF NPO 0805 5% 50V 4 C5 C14
C18 C20
1-61-0180 CAP 18pF NPO 0603 5% 50V 2 C1-2 Digi-Key Corporation
Digi-Key Corporation
TDK Corporation
Walsin Technology
Corporation
445-1272-1-ND
445-1272-2-ND
C1608C0G1H180J
0603N180J500L
1-62-0103 CAP 0.01uF X7R 0603 10% 50V 6 C3 C7 C9
C11-12
C15
Digi-Key Corporation
Walsin Technology
Corporation
Pan Overseas Electronic Co.,
LTD.
Pan Overseas Electronic Co.,
LTD.
Walsin Technology
Corporation
KEMET Electronics
Corporation
399-1091-1-ND
0603B103K500CT
A0603R103KCT
U0603R103KCT
0603B103K101CT
C0603C103K5RACTU
1-62-0104 CAP 0.1uF X7R 0603 10% 50V 11 C4 C8
C10 C13
C16 C19
C21-22
C24 C27
C95
Digi-Key Corporation
KEMET Electronics
Corporation
Walsin Technology
Corporation
399-5089-1-ND
C0603C104K5RACTU
0603B104K500C
1-70-1471 CAP 4.7uF TANT-A SMD 20% 6.3V 1 C6 NICHICON (AMERICA)
CORP.
VENKEL
AVX
PANASONIC INDUSTRIAL
CO
F930J475MAA(RoHS)
TA006TCM475MAR
TAJA475M010R
ECSTOJY475R
1-70-2102 CAP 10uF TANT-A 20% 10V 1 C23 PANASONIC INDUSTRIAL
CO
ECST1AY106R

AD17 Full BOM
Date: 9/26/2008
P/N Description Qty Ref. Des. Approved Mfr. Mfr's P/N PADsMfr.
2-49-0070 DIODE SWITCHING DUAL COMMON-CATHODE SOT-23 8 D1-8 Infineon Technologies
ROHM
NXP Semiconductors
FAIRCHILD SEMI
ON SEMICONDUCTOR
BAV 80 B5003(RoHS)
BAV70T116(RoHS)
BAV70 T/R(RoHS)
BAV70(RoHS)
BAV70LT3G(RoHS)
2-51-4401 TRANS NPN 2N4401 40V 1A SOT-23 2 Q2-3 FAIRCHILD SEMI
Micro Commercial
Components
ON SEMICONDUCTOR
DIODES INC.
MMBT4401
MMBT4401-TP(RoHS)
MMBT4401LT1G(RoHS)
MMBT4401-7-F(RoHS)
2-61-7223 REG VOLTAGE NJU7223DL1-33 3.3V TO-252 1 U4 JRC (NEW JAPAN RADIO
COMPANY)
NJU7223DL1-33 JRC
2-71-1324 IC LMV324 QUAD OP AMP LOW VOLTAGE RAIL-TO-RAIL
OUTPUT SOP-14
1 U1 NATIONAL
SEMICONDUCTOR
NATIONAL
SEMICONDUCTOR
LMV324M/NOPB(RoHS)
LMV324M
NATIONAL
3-01-0001 LED YELLOW ROUND T1(3mm) 6 LED1-6 EVERLIGHT ELECTRONICS
CO. LTD.
EL204YD
4-08-0401 CON USB 4-PIN FEMALE PC-MOUNT 90° W/SHIELD 1 J7 WIESON ELECTRONIC CO.
AMP INC.
3700-4CBT1T1W
787780-1
WIESON
4-14-1120 HEADER DIL 20-PIN 0.1 SHRD 1 J3 JAWS ELECTRONIC LTD. 3500-GS-20
4-15-2005 CON SIL 20-PIN 1mm FFC/FPC 90° ZIF BOTTOM-CONTACT 1 J1 J.S.T. MFG CO. LTD 20FMZ-ST(LF)(SN) JST
6-02-0065 SWITCH TACT SPST 5mm PITCH 4.3mm HEIGHT 160gf 6 SW1-6 FORWARD ELECTRONICS
CO LTD.
SFKHVBB3425-YN(RoHS) Forward Electronics
7-01-0058 CRYSTAL 8 MHz PARALLEL 18pF SMD HC-49/UP 1 X1 YOKETANT CORP
ECLIPTEK INC
R49SSB-008000-FA-18-30-YA
EC1SM-8.000M-TR
ECLIPTEK
CORPORATION
NEW PART IC MPU STM32F103R8T6 32-BIT 64K FLASH 72MHZ 3.3V
TQFP-64
1 U2 ST Microelectronics STM32F103R8T6 ST
MICROELECTRONICS
PCB Bare PCB, 2-Layer, 200mm x 60mm (apx 50% of AD32 right
PCB)
1

4/2/2009

AD17MNA00A.sch

9-79-0527-4-0

9-40-0527-4

ASSY NUMBER:

1

2
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3
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4

5

6

D

C

B

A

C

D

B

A
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COMPANY:

TITLE:

PART NUMBER:

FILENAME:

SCALE:

RELEASED:
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DRAWN:
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DATED:

DATED:

SIZE:

SHEET:

OF

1

1

C

AD17 MAIN PCB

AKAI PROFESSIONAL

CAN

STM32 JTAG

USB

FULL-SPEED

RC filter for VDDA

NC

USB DISCONNECT

NC

FADER

NC

FULL LEVEL

16 LEVELS

A

B

C

S1

FULL LEVEL

16 LEVELS

MAP PRESETS

MIDI CHANNEL

PAD BANK

S1

NC

NC

3.3V

TO 4x4 FSR PAD MATRIX

SWITCHES

LEDS

All LEDs set for 6mA

Only 3 will be lit at any time

Copyright Akai Pro 2009

NC

NC

NC

NC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

J2

C5

0.1uF

C10

0.1uF

C4

0.1uF

C3

0.1uF

R13

220 ohm

C8

0.01uF

C9

4.7uF,6.3V

GND

1

+VBUS

2

D-

3

D+

4

5

6

J1

R2

0 ohm

Q2

MBT4401

R4

47k

R3

36k

Q1

MBT4401

R7

1.50k 1%

R5

22 ohm

R6

22 ohm

R17

1 ohm

TP3

R14

0 ohm

C7

0.1uF

1

2

3

4

5

6

P1

10KB

C26

0.1uF

C20

0.1uF

LED1

RED

LED2

RED

LED3

RED

LED4

RED

LED5

RED

LED6

RED

R32

4.7k

C22

560pF

3

+

2

-

1

U3-A

LMV324M

R26

470 ohm

R28

10k

R29

27k

1

2

3

D2

BAV70

1

2

3

D1

BAV70

1

2

3

D4

BAV70

1

2

3

D3

BAV70

1

2

3

D8

BAV70

1

2

3

D7

BAV70

1

2

3

D6

BAV70

1

2

3

D5

BAV70

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

J3

20FMZ-ST(LF)(SN)

C21

0.1uF

-v

+v

4

11

U3-E

LMV324M

R34

4.7k

C24

560pF

R40

470 ohm

R36

10k

R37

27k

R35

4.7k

C25

560pF

R41

470 ohm

R39

10k

R38

27k

R33

4.7k

C23

560pF

R27

470 ohm

R31

10k

R30

27k

5

+

6

-

7

U3-B

LMV324M

10

+

9

-

8

U3-C

LMV324M

12

+

13

-

14

U3-D

LMV324M

C15

0.01uF

C16

0.01uF

C17

0.01uF

C18

0.01uF

C19

0.01uF

SW1

SW2

SW3

SW4

SW5

SW6

C11

0.1uF

C12

0.1uF

1

OUT

2

IN

3

GND

U2

NJU7223DL1-33

R18

0 ohm

TP1

TP2

TP4

TP5

R19

10k

R16

10k

R15

10k

R1

10k

R11

10k

C14

4.7uF,6.3V

C13

4.7uF,6.3V

C1

0.1uF

R8

220 ohm

R9

220 ohm

R22

220 ohm

R23

220 ohm

R24

220 ohm

R42

220 ohm

R10

10k

R12

10k

R20

10k

R21

10k

R25

10k

R43

10k

VSS

VDD

1

VBAT

2

PC13-TAMPER-RTC

3

PC14-OSC32_IN

4

PC15-OSC32_OUT

5

PD0-OSC_IN

6

PD1-OSC_OUT

7

NRST

8

VSSA

9

VDDA

10

PA0-WKUP

11

PA1

12

PA2

13

PA3

14

PA4

15

PA5

16

PA6

17

PA7

18

PB0

19

PB1

20

PB2/BOOT1

21

PB10

22

PB11

23

24

25

PB12

26

PB13

27

PB14

28

PB15

29

PA8

30

PA9

31

PA10

32

PA11

33

PA12

34

PA13

35

36

37

PA14

38

PA15

39

PB3

40

PB4

41

PB5

42

PB6

43

PB7

44

BOOT0

45

PB8

46

PB9

47

48

U1

STM32F102C8T6

C2

18pF

C6

18pF

X1

8 MHz

+3.3V

STM_TRST

STM_TDI

STM_TMS

STM_TCK

STM_TDO

STM_RST

+3.3V

STM_TMS

STM_TCK

STM_TDI

STM_TDO

STM_TRST

+3.3V

VBUS

+3.3V

+VDDA

AGND

STM_RST

+VDDA

AGND

PADSCAN[00:03]

PADSCAN00

PADSCAN01

PADSCAN02

PADSCAN03

PAD[00:15]

PAD00

PAD01

PAD02

PAD03

PAD04

PAD05

PAD06

PAD07

PAD08

PAD09

PAD10

PAD11

PAD12

PAD13

PAD14

PAD15

+VDDA

AGND

PAD00

PAD01

PAD02

PAD03

PAD04

PAD05

PAD06

PAD07

PAD08

PAD09

PAD10

PAD11

PAD12

PAD13

PAD14

PAD15

+3.3V

AGND

AGND

AGND

AGND

AGND

AGND

+3.3V

+3.3V

USB_DP

USB_DM

USB_DISCONNECT

PADRETURN3

PADRETURN2

PADRETURN1

PADRETURN0

FADER

PADSCAN02

PADSCAN03

SW_FULL_LVL

SW_16_LVL

SW_MAP

SW_S1

SW_PAD_BANK

SW_MIDI_CH

LED_FULL_LVL

LED_16_LVL

LED_A

LED_B

LED_C

LED_S1

PADSCAN00

PADSCAN01
