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Akai MPK225 Service Manual page 38

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1
6
COMPONENTS ON THIS SHEET SHOULD BE ON RIGHT PCB
A
D
+3V3
C15
0.1uF
R77
GND
VCC
47 ohm
9
11
SER_OUT
D0
7
12
NC
BUTTONS_IN
SER_OUT
D1
13
D2
14
D3
3
TP10
D4
4
D5
5
U1
D6
6
74HC165
D7
10
SER_IN
2
CLOCK
1
SHIFT/LOAD
15
INHIBIT
GND
GND
B
+3V3
C
R76
47 ohm
0.1uF
C16
GND
VCC
9
11
SER_OUT
D0
7
12
NC
SER_OUT
D1
13
D2
14
D3
3
D4
4
D5
5
U2
D6
6
74HC165
D7
10
SER_IN
2
CLOCK
1
SHIFT/LOAD
15
INHIBIT
GND
GND
+3V3
R7
47 ohm
0.1uF
C17
B
GND
VCC
C
9
11
SER_OUT
D0
7
12
NC
SER_OUT
D1
13
D2
14
D3
3
D4
4
U3
D5
5
74HC165
D6
6
D7
10
SER_IN
2
CLOCK
1
SHIFT/LOAD
15
INHIBIT
GND
GND
+3V3
C18
R5
0.1uF
47 ohm
GND
VCC
9
11
SER_OUT
D0
7
12
NC
SER_OUT
D1
13
A
D2
14
D3
3
D4
4
U4
D5
5
D6
74HC165
6
D7
10
SER_IN
D
2
CLOCK
1
SHIFT/LOAD
15
INHIBIT
GND
GND
1
2
3
5
4
BTNS_[0..31]
R35
10K
BTNS_0
BTNS_1
BTNS_2
BTNS_3
BTNS_4
BTNS_5
BTNS_6
BTNS_7
SHIFT_BUTTONS1
LOAD_BUTTONS
R64
10K
PAD BANK A
BTNS_08.
PAD BANK B
BTNS_09.
PAD BANK C
BTNS_10.
PAD BANK D
BTNS_11.
FULL LEVEL
BTNS_12.
BTNS_13
BTNS_14
BTNS_15
SHIFT_BUTTONS1
LOAD_BUTTONS
R3
10K
BTNS_16
BTNS_17
BTNS_18
BTNS_19
BTNS_20
BTNS_21
BTNS_22
BTNS_23
10K
10K
E1
SHIFT_BUTTONS1
LOAD_BUTTONS
2
B
3
C
1
A
4
5
GND
R4
10K
BTNS_24
BTNS_25
BTNS_26
BTNS_27
BTNS_28
BTNS_29
BTNS_30
BTNS_31
SHIFT_BUTTONS1
LOAD_BUTTONS
2
3
4
3
BTNS_[0..31]
BTNS_0
BTNS_1
BTNS_2
BTNS_3
BTNS_4
BTNS_5
BTNS_6
BTNS_7
BTNS_13
BTNS_14
BTNS_15
BTNS_16
BTNS_17
BTNS_18
BTNS_19
BTNS_20
BTNS_21
BTNS_22
BTNS_23
BTNS_24
BTNS_25
BTNS_26
BTNS_27
BTNS_28
BTNS_29
BTNS_30
BTNS_31
+3V3
+3V3
R246
R10
10K
R244
0 ohm
R248
EXT0
0 ohm
R247
EXT1
EXT2
EXT3
C1001
C1000
EXT4
R13
0 ohm
R11
GND
GND
0 ohm
Identifier
EXT3
Do Not Stuff
AD2A
Low
GND
DRAWN:
DRAWN_BY_1
RELEASED:
4
5
2
1
SW0
PRESET
SW1
EDIT
SW2
GLOBAL
SW3
PROGRAM CHANGE
SW4
CURSOR LEFT
SW5
CURSOR RIGHT
SW6
CURSOR UP
SW7
CURSOR DOWN
SW13
OCTAVE DOWN
SW14
OCTAVE UP
SW15
PREVIEW
SW16
NOTE REPEAT
SW17
ARP
SW18
LATCH
SW19
LOOP
SW20
TAP TEMPO
SW21
CONTROL BANK A
SW22
TIME DIVISION
SW23
REWIND
SW24
FFWD
SW25
STOP
SW26
PLAY
SW27
RECORD
SW28
SOFTKEY 1
SW29
SOFTKEY 2
SW30
SOFTKEY 3
SW31
SOFTKEY 4
GND
EXT4
Low
Copyright (c) 2013 Akai Professional
COMPANY:
AKAI
TITLE:
board
RIGHT PCB - SWITCHES
PART NUMBER:
PART_NUMBER
ASSY NUMBER:
ASSEMBLY_NUMBER
DATED:
#NAME?
FILENAME:
#NAME?
DATED:
Title
SCALE:
SHEET:
Size
Number
A3
Date:
2014/4/25
File:
D:\RD22\..\SWITCHES-20130911.SchDocDrawn By:
5
6
A
D
B
C
B
C
A
D
SIZE:
#NAME?
OF
*
*
Revision
Sheet of
6

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