Akai MPK25 Service Manual Download Page 2

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DISASSEMBLY PROCEDURES

1. DISASSEMBLE THE CABINET (Fig1)

(A) REMOVE 14 SCREWS FROM BOTTOM PANEL.

(Fig1)

2. DISASSEMBLE THE TOP PANEL AND MAIN PCB ASS’Y. (Fig2)

(A) REMOVE 13 KNOBS

(B) REMOVE 4 NUTS AND 4 WASHERS

(C)(D)(E)(F) REMOVE 4 CABLES.

(G) REMOVE 3 SCREWS

(Fig.2)

Summary of Contents for MPK25

Page 1: ...annels x 3 ports MIDI output channels from 5 pin MIDI 16 Keyboard 25 Semi Weighted keyboard velocity and channel pressure sensitive Drum pads 12 velocity and pressure sensitive Drum pad banks 4 360 de...

Page 2: ...1 DISASSEMBLE THE CABINET Fig1 A REMOVE 14 SCREWS FROM BOTTOM PANEL Fig1 2 DISASSEMBLE THE TOP PANEL AND MAIN PCB ASS Y Fig2 A REMOVE 13 KNOBS B REMOVE 4 NUTS AND 4 WASHERS C D E F REMOVE 4 CABLES G...

Page 3: ...3 DISASSEMBLE THE TOP PANEL PCB ASS Y Fig 3 A REMOVE 1 CABLE B REMOVE 13 SCREWS Fig 3 4 DISASSEMBLE THE LCM ASS Y Fig 4 A REMOVE 4 SCREWS Fig 4...

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Page 7: ...OTTOM PANEL 1 1 PAD25AKA01 PACKING 1 2 AA821535X USB CABLE L 1M 1 2 AA822328X SHEET POLY 900X900 1 2 AL7 51 0226 D SAFETY MANUAL 1 2 AL9 63 0010 A ABLETON LIVE LITE 7CD 1 2 AL9 63 0012 MPK25 AD25 CD 1...

Page 8: ...K 1 SMD 0805 2 R87 90 2 AL0 16 4752 RES 47 5K SMD 1 4 R59 60 74 75 2 AL0 16 8060 RES 806 SMD 1 1 R46 2 AL0 17 0101 RES ARRAY 4X100 1 10W 0603 7 R34 62 63 65 67 69 70 2 AL0 17 0472 RES ARRAY 4X4 7K 1 1...

Page 9: ...5 13 2 RS820K10J03 RES 820K OHM 1 10W 0603 1 R18 2 RS82K508F05 RES 82 5K 1 SMD 0805 1 R64 2 TE512540801 TERMINAL 8P 2 54mm 1 J10 2 UH160808T 102Y BEAD 1000 100MHZ 0603 2 L1 4 2 UHLPF3218MF100M 10UH 1A...

Page 10: ...310J03 RES 10K 5 SMD 0603 7 R6 9 17 19 35 48 49 2 RS10418J05 RES 100K 5 SMD 0805 1 R18 2 RS10510J03 RES 1M 5 SMD 0603 2 R10 22 2 RS22118J05 RES 220 5 SMD 0805 6 R15 16 20 36 39 40 2 RS27318J05 RES 27K...

Page 11: ...10 TP9 TP6 TP3 TP2 R62 A 100 ohm R62 B 100 ohm C34 0 1uF C54 0 1uF C67 0 1uF C37 0 1uF C52 0 1uF C53 0 1uF C38 4 7uF 25V R40 10K C79 0 1uF R68 10K R34 D 100 ohm R34 C 100 ohm TP8 R34 B 100 ohm R69 D 1...

Page 12: ...R2 0 ohm R3 0 ohm TP5 TP4 TP7 C3 0 1uF C31 0 1uF C4 0 1uF L2 10uH C14 1uF C30 1uF G D S U4 A FDC6306P R26 1K 1 2 3 4 5 6 7 8 J4 MIDI C6 1000pF C10 1000pF R15 220 ohm U2 TLP181 Q4 MBT4401 R28 220 ohm R...

Page 13: ...1 2 3 4 J8 C25 0 1uF C44 DNS 0 1uF C43 0 1uF C48 1000pF R66 DNS 0 ohm R56 33 2k 1 R59 47 5k 1 12 13 14 U8 D LMV324M R64 82 5k 1 R61 15 8k 1 v v 4 11 U8 E LMV324M C72 0 1uF C60 0 1uF R91 2 32k 1 R90 4...

Page 14: ...EL Grounded mounting hole Attaching ground wire between LCM and mounting hole may improve ESD immunity C9 22uF R5 10 ohm 1 2 3 4 R27 1 2 3 4 R12 1 2 3 4 R2 1 2 3 4 R26 1 2 3 4 R11 1 2 3 4 R1 TP1 TP2 C...

Page 15: ...4 IO5 5 IO4 6 IO3 7 IO2 8 IO1 9 IO0 10 A 11 B 12 VSS 14 C 13 D 15 INH 16 IO15 17 IO14 18 IO13 19 IO12 20 IO11 21 IO10 22 IO9 23 IO8 24 VDD U3 CD74HC4067M 1 OUT IN 2 IO7 3 IO6 4 IO5 5 IO4 6 IO3 7 IO2...

Page 16: ...across product line Dissipation at accidental 9VDC input will be about 300mW B Copyright c 2008 Akai Professional 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 J4 GFP 231221 21802G R18 100k 1 2 3 4 5...

Page 17: ...EL LED7 YEL LED2 YEL 1 OE 2 D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 GND 11 CLK 12 Q7 13 Q6 14 Q5 15 Q4 16 Q3 17 Q2 18 Q1 19 Q0 20 VCC U2 SN74AC574PW 1 OE 2 D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 GN...

Page 18: ...OTE REPEAT PAD B ENCODER Copyright c 2008 Akai Professional B CONTROL BANK FULL LEVEL 12 LEVELS TAP TEMPO OCTAVE OCTAVE FOOTSWITCH R9 10K R6 10K S26 1 A 2 B 3 C 4 5 E1 DC11B2421403 YN S27 S25 S28 S15...

Page 19: ...8 10K R46 27k R41 4 7k C57 560pF R45 470 ohm R49 10K R47 27k R37 4 7k C50 560pF R42 470 ohm R35 10K R38 27k 1 2 3 D2 BAV70 1 2 3 D3 BAV70 1 2 3 D5 BAV70 1 2 3 D4 BAV70 1 2 3 D6 BAV70 1 2 3 D7 BAV70 3...

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Page 29: ...The Max MSP Runtime Installed 4 An expression pedal 5 A sustain pedal 6 A USB A to B cable Preparation 1 If your PC does not have a copy of the Max Runtime installed you will first need to install th...

Page 30: ...e testing instruction to move on To the top left of the screen the currently manipulated parameter value is displayed This will be used to check velocity values Note although the tester may advance th...

Page 31: ...or a full range of values If having difficulty passing an encoder please turn more slowly across the 127 0 crossing at 6 o clock on the dial The tester may find an optimal testing speed where although...

Page 32: ...nfirm Velocity has full range The aftertouch is touchy You will likely need to go up and down twice to confirm all values are met The velocity of your presses is displayed in the top left as the curre...

Page 33: ...ed by the aftertouch field under the keyboard Please confirm a full range to 127 Velocity values are displayed on the top left of the screen as the Current Parameter Please confirm a full range to 127...

Page 34: ...Display Pass You want the unit to look like this Serialization If all the tests Passed then the big All Pass message will light green and the tester may serialize YH is familiar with this step from th...

Page 35: ...er unit please close and restart Thank You for using the MPK25 Test Program Sun kia P ng an You are done Please restart the application after disconnecting the unit and before connecting a new unit to...

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