Akai MPD226 Service Manual
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SERVICE MANUAL
Pads
Pads
Pads
Pads
Knobs
Knobs
Knobs
Knobs
Buttons
Buttons
Buttons
Buttons
Display
Display
Display
Display
Connections
Connections
Connections
Connections
Power
Power
Power
Power
Dimensions
Dimensions
Dimensions
Dimensions
(width x depth x
height)
Weight
Weight
Weight
Weight
SPECIFICATIONS
1 6 1 6 1 6 1 6
v e l o c i t y - a n d p r e s s u r e - s e n s i t i v e p a d s , R G B - b a c k l i t
4 4 4 4
b a n k s a c c e s s i b l e v i a
4 4 4 4
3 6 0 ° a s s i g n a b l e p o t e n t i o m e t e r s
3 b a n k s a c c e s s i b l e v i a C o n t r o l B a n k b u t t o n
3 b a n k s a c c e s s i b l e v i a C o n t r o l B a n k b u t t o n
3 b a n k s a c c e s s i b l e v i a C o n t r o l B a n k b u t t o n
3 b a n k s a c c e s s i b l e v i a C o n t r o l B a n k b u t t o n
1 1 1 1
3 6 0 ° e n c o d e r f o r d i s p l a y n a v i g a t i o n a n d s e l e c t i o n v i a p u s h
4 4 4 4
a s s i g n a b l e s w i t c h e s , a m b e r - b a c k l i t
1 0 1 0 1 0 1 0
d e d i c a t e d f u n c t i o n b u t t o n s , a m b e r - b a c k l i t
3 3 3 3
t r a n s p o r t b u t t o n s
4 4 4 4
d i r e c t i o n a l c u r s o r b u t t o n s f o r d i s p l a y n a v i g a t i o n
2 0 2 0 2 0 2 0
4 4 4 4
x
c h a r a c t e r s , m o n o c h r o m e b a c k l i t w i t h a d j u s t a b l e c o n t r a s t
1 1 1 1
U S B p o r t
1 1 1 1
p o w e r i n p u t ( p o w e r a d a p t e r s o l d s e p a r a t e l y )
1 1 1 1
1 / 8 " M I D I i n p u t ( 1 / 8 " - M I D I a d a p t e r i n c l u d e d )
1 1 1 1
1 / 8 " M I D I o u t p u t ( 1 / 8 " - M I D I a d a p t e r i n c l u d e d )
1 1 1 1
K e n s i n g t o n l o c k s l o t
v i a c o m p u t e r U S B b u s o r U S B c h a r g e r ( s o l d s e p a r a t e l y )
v i a p o w e r a d a p t e r ( s o l d s e p a r a t e l y ) : 6 V D C , 1 A , c e n t e r - p o s i t i v e
1 3 . 1 " x 1 0 . 0 " x 1 . 9 "
3 3 . 3 c m x 2 5 . 4 c m x 4 . 8 c m
2 . 9 l b s .
1 . 3 k g
P a d B a n k
P a d B a n k
P a d B a n k
P a d B a n k
b u t t o n
MODEL: MPD226

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Summary of Contents for Akai MPD226

  • Page 1 SERVICE MANUAL MODEL: MPD226 SPECIFICATIONS Pads Pads Pads Pads 1 6 1 6 1 6 1 6 v e l o c i t y - a n d p r e s s u r e - s e n s i t i v e p a d s , R G B - b a c k l i t...
  • Page 2: Disassembly Procedures

    DISASSEMBLY PROCEDURES DISASSEMBLE THE BOTTOM PANEL, KNOB AND SLIDER VR CAP. (A) REMOVE 5 KNOBS, 5 NUTS, 5 WASHERS AND 4 PCS SLIDER VR CAP FROM THE TOP PANEL. (B) REMOVE 13 SCREWS FROM THE BOTTOM PANEL. (Fig1) DISASSEMBLE THE TOP PCB ASSEMBLY, FSR PCB ASSEMBLY AND LCM. (A)REMOVE 2 PCS CABLE FROM THE TOP PCB ASSEMBLY AND FSR PCB ASSEMBLY.
  • Page 3: Wiring Diagram

    WIRING DIAGRAM (US/AU)
  • Page 4: Packing Diagram

    PACKING DIAGRAM (US/AU)
  • Page 5: Explode Diagram

    EXPLODE DIAGRAM (US/ AUS) EQUENCIAL NO EXPLODE DIAGRAM WILL BE MARKED ON REF.COLUMM OF BOM LIST...
  • Page 6 AD27AKA21 LEVEL DESCRIPTION AD27AKA21 AD27 USB5V USA AA821535X USB 2.0 Cable 1m A/B Type Black BASJ5012B PU Stand CA030000503 TRS Cable 50mm 3.5φ/MIDI Type Black CN0100000501 Flat Cable GND Wire Black Length 50mm Line/Female EVA1504479 FFC1610000501 FFC 16Pin Pitch:1.0mm Length:50mm FFC1610001501 FFC 16Pin Pitch:1.0mm Length:150mm GEAKA17...
  • Page 7 SC0208RBCI Screw M2X8 PPC Tapping SC0308PBBI Screw M3X8 PBB Tapping SC2605PBBI Screw M2.6x5 PBB Tapping TWPC14A01101 TOP PCB Assembly AA822524X IC SN74HC165PW U1~3 AA822748X Diode BAV99 D2,3 AL0-17-0101 RES Array 4X100 1/10W 0603 R6,78,103 AL0-17-0221 RES ARRAY 4X220 1/10W 0603 R11,12,13 AL0-17-0331 RES Array 4X330 1/10W 0603...
  • Page 8 LDKPT-1608SYCK Liquid-emitting Diode Yellow SMD 0603 19 LED1~7,9~20 angle 120° PC14A011 TOP PCB 2Layer FR-4 1.6T 255*165MM RS000008J05 RES 0 5% SMD 0805 15 R10,27,60,61,63,66,99,101,127,132,133 R139,142,148,162 RS001508F05 RES 15 1% SMD 0805 R153 RS001K08F05 RES 1K 1% SMD 0805 R128~130 RS001K10F03 RES 1K 1% SMD 0603 R165...
  • Page 9 RS004708F05 RES 47 1% SMD 0805 R264,265,266,267,268 RS010K08F05 RES 10K 1% SMD 0805 R220,224,228,232 RS012108F05 RES 121 1% SMD 0805 16 R200,203,206,209,212,215,234,237,240 R243,246,249,252,255,258,261 RS01K508F05 RES 1.5K 1% SMD 0805 R218,222,226,230 RS047008F05 RES 470 1% SMD 0805 R219,223,227,231 RS06K808F05 RES 6.8K 1% SMD 0805 R221,225,229,233 RS33R208F05 RES 33.2 1% SMD 0805...
  • Page 10: Hardware Setup

    This document is intended to describe the operation of the ADT1 Manufacturing Test application for the Production Testing of MPD226. Terms MPD226: A USB Pad Controller. Also known as AD27. ADT1: A Manufacturing Test application that runs on Windows computers. Hardware setup ADT1 expects the following connections to be made: 1.
  • Page 11: Software Setup

    The ports that need to be selected depend on the sub-tests that are being performed for that product. In addition to the main USB-MIDI port, the Manufacturing test for MPD226 requires that a port be selected for the MIDI loopback test.
  • Page 12: User Interface

    Midi Loopback port selection The next Chooser window will allow the Tester to select the port used for the MIDI loopback test. Select the correct port and click “OK”. This selection should only need to be done once when the program is first run. User Interface The Main Test screen has a representation of the Device Under Test.
  • Page 13: Version Number

    (i.e. every subtest button is green). Serial Number When a test starts, the Serial Number of the MPD226 will be read and displayed in the bottom left corner. The Serial Number will also be read from the MPD226 and displayed after Serialisation has completed.
  • Page 14 This test requires a MIDI cable to be connected between the MIDI IN and MIDI OUT connectors on the rear panel. Test messages are sent to the MPD226 for transmission from the MIDI OUT connector on the rear panel. The ADT1 Manufacturing Test app looks for these messages to be received back on the MIDI IN connector.
  • Page 15: Led Tests

    LED tests There are a number of LED tests in the MPD226 Manufacturing Test. – Red Pad LEDs – Green Pad LEDs – Blue Pad LEDs – Button LEDs...
  • Page 16 In each case, the ADT1 Manufacturing Test app will send a message to flash LEDs on the MPD226. The User interface will indicate which LEDs are flashing and what colour they should be. The Tester should indicate whether the test passed by pressing the UI controls indicated by the “bubble”...
  • Page 17: Button Test

    User Interface and, where possible, it will send a message to light the LED that is associated with the button on the MPD226. The buttons can be pressed in any order, but if ADT1 detects two button events at exactly...
  • Page 18 Fader Test This test requires that the Test operate the indicated Faders to their minimum and then maximum limits. When the Minimum has been reached, the graphic symbol on the User Interface will change.
  • Page 19 User interface and send a message to the MPD226 to light the associated Pad LED. When the ADT1 Manufacturing Test application detects maximum pad pressure, it will change the graphic symbol to green and send a message to the MPD226 to switch off the associated Pad LED.
  • Page 20 Rotary Encoder test The Tester needs to turn the encoder first clockwise and the anti-clockwise as indicated by the ADT1 Manufacturing Test application. ADT1 will check that all possible values are received from the knob control. The progress of the test is indicated by the graphics on the control. Graphics ADT1 Tester...
  • Page 21 ADT1 has detected all Tester should turn knob anti-clockwise. clockwise values. ADT1 is waiting for Tester to turn knob anti-clockwise. ADT1 has detected anti- Tester should continue to turn knob clockwise movement. anti-clockwise ensuring that all values are sent. ADT1 has detected all anti- Tester should move to next knob clockwise values.
  • Page 22 In this test, the ADT1 Manufacturing Test application will send messages to the MPD226 to set all the segments on the LCD display first on and then off. For both the “on” and “off” tests, the Tester should examine the LCD and use the indicated buttons to confirm whether the subtest has passed.
  • Page 23 The Tester can type the Serial Number, followed by Carriage Return, but it is preferred that a USB Barcode Reader is used to scan the serial number barcode on the MPD226. When the Serialisation has completed successfully, the display will update.
  • Page 24 Test Complete - Next MPD226 When a test of a MPD226 is complete, either successful or unsuccessful, it should be possible to just disconnect that MPD226 and connect the next one. It would not normally be necessary to reselect the ports as long as the corresponding test on the previous...

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