Akai APC20 User manual

Confidential Akai Service Manual
AKAI
APC20
(ADA3)
Service Manual
Rev. 1
2010.04.14
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.

SPECIFICATION
FEATURES
1. Designed in partnership with Ableton, mapped for Live, and fully customizable
2. Clip Launch matrix with multicolor lighting displays current clip status
3. No mapping required; every button and fader is pre-mapped
4. Bidirectional hardware/software communication for visual feedback on APC20
5. Solid, professional feel with rugged, metal chassis and premium controls
6. Comes with Ableton Live Akai Professional APC Edition software
7. Works with Standalone editions of Ableton Live
8. USB plug-and-play connection for Mac and PC
SERVICE MANUAL
MODEL: APC20

Equipment Needed.
1x1
2x1
3x1
4x1
5x1
6x1
Setting up
1Plug in th power and USB cable to the APC20.
2Connects the usb with the PC
P
art
I
Main Board Power Test(PCBA)
1Test using multimeter to measure the voltage according to the location shown in below figure.
2If all the value tested are same after round up then the main board power test is passed.
Figure 1: Location to test voltage
USB cable
PC
MultiMeter
APC20 12V 2A adaptor
APC20 TEST PROCEDURES
APC20
Foot Switch

Part II
Functionality Test
Setting up
1Plug in the power and USB cable to the APC20.
2Connects the usb with the PC
3Press the power switch to power on the set before start the test program.
4Open the APC20 Test Application by double click or simply select using a mouse and press the
Enter button on the keyboard on the APC20 Test Program .10.exe as shown in the figure below.
Figure 2: APC20 Test Program ICON
5After the program have been loaded, it will pop up a selection window which you need to select
USB device as shown below. Select USB Audio Device for WinXP and APC40 for Win Vista
Figure 3: Selecting USB device
6After Selecting the USB device used, a main test window will show up as below.
Figure 4: Main test window
APC20 TEST PROCEDURES

Button function test
1As shown in the figure below, press all the button in the are which are mark by yellow box.
Figure 5: button test area
2This part of test is to test the button functionality and once you press the button it will on the yellow
LED and at the test application the button press will be show in green. Below is a sample of all the
button are pressed and showing green.
Figure 6: button test pass
APC20 TEST PROCEDURES

Slider test
1Slides the fader show in the incated area to test its functionality.
Figure 7: Fader test area
2For the 9 vertical fader, push it to the top then push it down to the bottom to ensure it can reach
top and bottom side. When it does, the fader will show green to pass.
3Noted that when fader are at the top position, the current parameter are 127 and bottom is 0.
4As for the one and only horizontal slider, push it to the left most with the current parameter is 0 and
to the right most with the current parameter is 127.
Encoder test
1There are only one encoder to be tested.
2The encoder are the CUE LEVEL. This VR only need to turn it clockwise 360 deg but
you just need to turn it slowly to pass it.
3After this test, the display of the test application should be as below.
Figure 8: VR pass display
APC20 TEST PROCEDURES

Part III
LED test
The main purpose of this test is to make sure all LED are ok and the color are correct.
Green LED test
1Press the Green LED? Button in the applcation by using the mouse.
2The LED on the indicated area will on. Make sure all the LED are on and the color or brightness
are even among each type of LED.
Figure 11: All LED ON.
APC20 TEST PROCEDURES

RED LED test
1Press the Green LED? Button in the applcation by using the mouse in the test application.
2The clip launch will all lite up in red with certain part of the other LED as shown below.
Figure 10: All LED on SET are on
Dual LED test
1Passing the red by click on RED pass button then the 2 color LED will both lite up
as shown below:
Figure 11: dual color LED
2 Confirm that all same colored LED are even in color.
APC20 TEST PROCEDURES

**Critical Point:
Make sure the LED:
1color and brightness are even Darker
Brighter
ok
NG
2there is no light spot shows at the rubber keypad
got light spot
ok NG
3Make sure that all LED in the indicated are on and no missing as shown below.
4 After confirm that all LED have no problem, press the ALL LEDs? to complete the test
5 There will be a big PASS on the top right showing the set has pass all the test.
APC20 TEST PROCEDURES
END

APC20 WIRING DIAGRAM
FFC5005002001
CN1020001504
TWPC08A00903
TWPC09A01201

Lvl Materials SPECS Qt
y
Part Location
.1 BAGL-55A WIRE CLIP 2.000 23
.1 CN1020001504 CONN WIRE 10P 2.0 150MM FEMALE/FEMALE 1.000 20
.1 FFC5005002001 FFC 50P 200MM PITCH 0.5MM-ROH 1.000 19
.1 LAC22AKA95 ABLETON APC EDITION SERIAL NO STICKER(ADA1&ADA3) 1.000 22
.1 LAC52ALE01 LABEL (SAFETY) 1.000 21
.1 MT0601802 HEAT METAL 2.000 24
.1 MT1504432 T3 SHOULDER SCREW 6.000 11
.1 MT153031301 BOTTOM PLATE(SPRAY & PRINT) 1.000 15
.1 NM1504403 VELVET CARPET 9.000 18
.1 PT1304315 POWER CABLE RETAINER 1.000 10
.1 PT151063801 SLIDE KNOB (ADD WHITE INK) 9.000 1
..2 PT1510638 SLIDE KNOB 1.000
.1 PT1510643 KNOB (ALPHA) (SHARING TOOL AL9-11-1011) 1.000 7
.1 PT152062001 ADA3 SIDE CAP LEFT(SPRAY RUBBER PAINT) 1.000 6
..2 PT1520620 ADA3 SIDE CAP LEFT 1.000
.1 PT152062101 ADA3 SIDE CAP RIGHT(SPRAY RUBBER PAINT) 1.000 5
..2 PT1520621 ADA3 SIDE CAP RIGHT 1.000
.1 PT153001601 TOP PANEL ADA3 (SPRAY & PRINT APC20) 1.000 3
..2 PT1530016 TOP PANEL ADA3 1.000
.1 RU1504315 RUBBER KEYPAD 1.000 12
.1 RU1530601 RUBBER FOOT 4.000 17
.1 SC0306RINI SCREW 3.000 8
.1 SC0308RBBI SCREW 16.000 16
.1 SC0308RBNI SCREW 23.000 4
.1 SC0310RIBI SCREW M3 X 10 1.000 9
.1 TP0316B BLACK ACETATE CLOTH TAPE W16MM X L30M 0.002 25
.1 TWPC08A00903 PCB ASS'Y (MAIN) 1.000 14
..2 AL0-17-2470 RES C.ARRAY 4X47 OHM 1/16W 5% ISOLATED C-C=0.5MM 7.000 R11, 18 , 20 , 24~26 , 29
..2 AL0-17-8103 Array Resistor 8 X 10k 1/16 W 5% 2.000 R13, 14
..2 AL1-70-1471 CAP. 4.7UF/6.3V TANT-A SMD 20% 1.000 C6
..2 AL2-51-0340 DIODE SCHOTTKY MBRA340T3 40V 3A 2.000 D1, 4
..2 AL2-51-4401 TRANS NPN 2N4401 40V 1A SOT-23 2.000 Q2, 3
..2 AL2-56-0749 Transistor FZT749 SOT-223 1.000 Q1
..2 AL2-61-3463 IC REG VOLTAGE MC34063A ADJ 1.000 U3
..2 AL2-61-7223 IC REG VOLTAGE NJU7223DL1-33 3.3V TO-252 1.000 U4
..2 AL2-61-7885 IC UA7805 CKTTR TO-263-DR51 1.000 U1
..2 AL4-21-5000 Connector 50P 0.5MM SMD-ROHS 1.000 J1
..2 CS102K5003X7R CHIP CAP 1000PF/50V,X7R,+/-10%, SMD 0603 6.000 C3 , 9, 11~12, 15, 17
..2 CS103K5003X7R C.CAP 0.010UF 50V X7R,±10% SMD 0603 1.000 C7
..2 CS104K5003X7R CHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 0603 13.000 C8, 10, 13~14, 16, 18~19, 21~22,
C31~34
..2 CS180J5003NPO CHIP CAP. SMD 18pF/50V 0603 NPO 2.000 C1~2
..2 CS221J5003NPO C. CAP. SMD 220 pF 50V 5% 0603 NPO 1.000 C20
..2 ICSTM32F102R8T6 IC STM32F102R8T6 TQFP64-DR376 1.000 U2
..2 PC08A009 PCB 4 layer FR-4 175*80MM 1.000
..2 RS000004F06 CHIP RES. 0 O 1% SMD 1206 2.000 R30, 45
..2 RS000008J05 CHIP RES. 0  5% SMD 0805 3.000 R1, 2, 17
..2 RS000010J03 CHIP RES. 0  1% SMD 0603 10.000 R3~9, 42, 46, 47
..2 RS000108J05 CHIP RES. 1  5% SMD 0805 1.000 R15
..2 RS001K10F03 CHIP RES. 1K  1% SMD 0603 3.000 R22, 31, 33
..2 RS002210F03 CHIP RES. 22  1% SMD 0603 2.000 R35~36
..2 RS010K10F03 CHIP RES. 10K  1% SMD 0603 5.000 R12, 16, 19, 23, 44
..2 RS012008F05 CHIP RES. 120  1% SMD 0805 1.000 R21
..2 RS01K510F03 CHIP RES. 1.5K  1% SMD 0603 1.000 R37
..2 RS022010F03 CHIP RES. 220  1% SMD 0603 1.000 R10
..2 RS036K10F03 CHIP RES. 36K  1% SMD 0603 1.000 R43
..2 RS047K10F03 CHIP RES. 47K  1% SMD 0603 1.000 R38
..2 RS12318F05 CHIP RES 12K OHM 1/10W ±1% 0805 1.000 R27
..2 RS196218F05 RES 19.6K OHM 1% 0805 1.000 R28
..2 TCS106M1006 TAN-CAP 10UF/10V (A CASE )SND A CASE 1.000 C23
APC20 BOM

Lvl Materials SPECS Qty Part Location
..2 UHDRRI127-101M INDUCTOR 100UH 3A 20% SMD 1.000 L1
..2 UHSQD105T-751 Ferrite CM choke Coil 750 ohm @100MHz 1.000 L2
..2 XTM08000X6F1 Crystal 8MHz HC49SMD 1.000 X1
..2 AL1-16-0333 CAP 330UF ELEC LOW-ESR 25V 105°C 3.5 X 8 X 15MM 3.000 C4~5 ,30
..2 AL4-08-0402 CON USB SOCKET 4 PIN FEMALE PC-MNT HORIZONTAL 1.000 J7
..2 AL6-02-0001 SWITCH DPDT 1.000 SW1
..2 EC22616TS E. CAP 22UF/16V (HEIGHT: 7MM) 3.000 C26~27, 35
..2 JKDJ-0702B-020 DC SOCKET 2.0MM 1.000 J4
..2 R0R2201T5 RESISTOR 0.22 OHM 1W 5% 3.000 R39~41
..2 TE10201002 10P CONNECTOR SOCKET 1.000 J2
..2 TE962542001 20P CONNECTOR SOCKET 1.000 J3
.1 TWPC09A01201 FUNCTION PCB ASS'Y 1.000 13
..2 AL0-17-0102 CHIP RESISTOR ARRAY 4X1K OHM 1/16W 5% (SMD) 4.000 R22~25
..2 AL0-17-0221 CHIP RES ARRAY 4X220 ohm1/16W 4.000 R20, 21, 26, 27
..2 AL2-54-0138 TRANSISTOR BSS138 16.000 Q1~12, 17, 18, 23, 24
..2 AL2-54-6306 TRANS SMALL-SIGNAL DUAL EN-MOSFET FDC6306P SSOT-6 8.000 Q13~16, 19~22
..2 AL2-63-0541 IC 74AHCT541-DR99 1.000 U2
..2 AL2-73-4051 IC 74HC4051 SINGLE 8-CHAN MUX 16-PIN SOIC 2.000 U3, 4
..2 AL4-21-5000 Connector 50P 0.5MM SMD-ROHS 1.000 J1
..2 AL9-61-0201 IC(AL2-80-0256) FPGA_ADA1_V0_13 1.000 U1
...3 AL2-80-0256 IC LCMX0256 TQFP-100-DR217 1.000
..2 BABL3008 BLANK LABEL 30MM X 8MM (ART PAPER) 1.000
..2 CS103K5003X7R C.CAP 0.010UF 50V X7R,±10% SMD 0603 1.000 C20
..2 CS104K5003X7R CHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 0603 35.000 C4~15, 17~19, 22~41
..2 DIENLL4148SM DIODE SIGNAL LL4148-GS08 SM MELF (SMD) (VISHAY) 87.000 D87~173
..2 LD-19-22SURSYGC LED HYPER RED/GREEN SMD EVERLIGHT 40.000 D1~8, 10~17, 19~26, 28~35, 37~44
..2 LDKPTC2012QBC-C LED BLUE KPTC2012QBC-C 0805-ROH 8.000 D71~78
..2 LDLTST-C190KGKT LED (GREEN) (3-20-0009) 30.000 D9, 18, 27, 36, 45~70
..2 LDLTST-C190KRKT LED RED (3-20-0011) 8.000 D79~86
..2 PC09A012 FUNCTION PCB 2 LAYER FR-4 276*204MM 1.000
..2 RS000008J05 CHIP RES. 0  5% SMD 0805 15.000 R1, 4, 5, 10, 11, 14, 30, 39, 40, 53~55,
R59~61
..2 RS000010J03 CHIP RES. 0  1% SMD 0603 1.000 R2
..2 RS001M10F03 CHIP RES. 1M  1% SMD 0603 2.000 R57, 58
..2 RS002208F05 CHIP RES. 22  1% SMD 0805 5.000 R7, 9, 13, 16, 19
..2 RS002408F05 CHIP RES. 24  1% SMD 0805 1.000 R51
..2 RS002708F05 CHIP RES. 27  1% SMD 0805 1.000 R52
..2 RS010K10F03 CHIP RES. 10K  1% SMD 0603 16.000 R31~38, 43~50
..2 RS047K10F03 CHIP RES. 47K  1% SMD 0603 2.000 R3, 17
..2 RS05R608J05 CHIP RES. 5.6  5% SMD 0805 5.000 R6, 8, 12, 15, 18
..2 RS06R808J05 CHIP RES. 6.8  5% SMD 0805 4.000 R28, 29, 41, 42
..2 TCS106M1006 TAN-CAP 10UF/10V (A CASE )SND A CASE 1.000 C21
..2 AL0-09-0044 VARIABLE RESISTOR 2.5KB 1.000 P1
..2 AL0-09-0057 SLIDE VR (STEREO) 10KB 45MM 9.000 P2~10
..2 EC22616TS E. CAP 22UF/16V (HEIGHT: 7MM) 3.000 C1, 2, 16
..2 EC33706TSS05 CAP 330UF ELEC 6.3V 1.000 C3
..2 TE622001001 10P CONNECTOR SOCKET 1.000 J2
.1 TWPT151062001 PLASTIC KNOB ASS'Y (KNOB + COVER) 1.000 2
..2 PT1510620 KNOB 1.000
..2 PT1510621 KNOB COVER 1.000
.1 AA406633J PE BAG 370X280X.03 PRINTING 0.006
.1 AA821535X CORD USB A-B L1000 BLACK 1.000
.1 AL7-10-1215 ADAPTOR 12V 2.0A 24W 1.000
.1 AL7-51-0226-I AKAI SAFETY MANUAL REV I 1.000
.1 AL7-91-1002 SILICAL GEL 5G PACKET 1.000
.1 AL9-63-0014-8 CD ABLETON LIVE 8 1.000
.1 CGADA3310AKA01 GITBOX 1.000
.1 CTADA3513AKA01 OUTER CARTON 0.500
.1 GEAKA06 AKAI ABLETON CARD 1.000
.1 LAC22AKA88 SERIAL NO & BARCODE LABEL 1.000
.1 LAC67YAH261 LABEL (GREEN MARKING) 02~03 VERSION FOR ROHS 1.000

Lvl Materials SPECS Qt
y
Part Location
.1 LAP67YAH255 LABEL (RED MARKING) 2.000
.1 OPADA3AKA01 QUICK START MANUAL 1.000
.1 PE150350400BEP PLASTIC BAG W/PRINTING 0.004
.1 PLADA101 ADA1 POLYFOAM LEFT 1.000
.1 PLADA102 ADA1 POLYFOAM RIGHT 1.000
.1 SD40035000RJP LAMIN BAG 1.000