Akai MPK mini MK3 Service Manual page 35

1 2
VR+3.3V VR+3.3V
P1 P5
1 2 1
PAD0
FSR FSR
C40
A
1000pF
DNS
P2 P6
DGND
1 2 1
PAD1
FSR FSR
C42
1000pF
DNS
P3 P7
DGND
1 2 1
PAD2
FSR FSR
C47
1000pF
DNS
P4 P8
DGND
1 2 1
PAD3
FSR FSR
C53
B
1000pF
DNS
PAD
DGND
Key SCAN
To Keyboard
SW1
D5
KBD_ROW0
D+3.3V
PROG_SEL
DIEN1N4148WSM
SW2
D6
KBD_ROW1
PROG_CH
DIEN1N4148WSM
SW3
D7
C
KBD_ROW2
CC
DIEN1N4148WSM
FCN1
SW4
D8
1
KBD_ROW3 2
BACK A/B DIEN1N4148WSM 3
4
SW5
D9
5
KBD_ROW4 6
APP 7
DIEN1N4148WSM
8
SW6
D10 9
KBD_ROW5 10
TAP DIEN1N4148WSM 11
12
SW7
D11 13
KBD_ROW6 14
OCTAVE_UP 15
DIEN1N4148WSM
16
SW8
D12
KBD_ROW7
OCTAVE_DOWN
DIEN1N4148WSM
KEY_COL0
SW9
D13
KBD_ROW0
FULL_LEVEL DIEN1N4148WSM
D
SW10
D14
KBD_ROW1
NOTE REPEAT DIEN1N4148WSM
KEY_COL1
1 2
3
VCC VLED
D3
DNS
D4
2 S D
PAD4
C41 Q3
DMP3099L
1000pF
DNS
R31 R32
100KΩ 1KΩ
DGND
2
PAD5
R52
LED_PW_EN
Q4
1KΩ
C43
1000pF IC7
DNS
C46
DGND
DGND 0.1uF
2
PAD6
DGND
C48
1000pF
DNS
DGND LED_DATA
2
PAD7
LED_RC
C54
LED_CLK
1000pF
DNS
DGND
VR+3.3V
DGND
KBD_COL7
KBD_ROW0
KBD_COL6
VR+3.3V
KBD_ROW1
KBD_COL5
KBD_ROW2
KBD_COL4
KBD_ROW3
KBD_COL3
KBD_ROW4
KBD_COL2
KBD_ROW5
KBD_COL1
KBD_ROW6
KBD_COL0
KBD_ROW7
DGND
FOR EMC
DGND
3
4 5
C44 IC8
DGND 0.1uF
DGND
74HC595
R53 100Ω
R55 0Ω
C50
470pF
DGND DGND DGND
VR+3.3V
C55 C56
VR1 VR2
100pF 100pF
K1 K2
DGND DGND
1 1
P1PHA P2PHA
3 3
P1PHB P2PHB
C60 C61
C66 C67
100pF 100pF
100pF 100pF
DGND
DGND DGND
VR+3.3V
C71 C72
VR5
100pF VR6 100pF
K5
DGND K6 DGND
1 1
P5PHA P6PHA
3 3
P5PHB P6PHB
C75 C76
C80 C81
100pF 100pF
100pF 100pF
DGND
DGND DGND
Approval Check Design
4 5
6
IC9
C45
DGND DGND
0.1uF
74HC595 DGND
74HC595
R54 100Ω
C49
47pF
C51 C52
DNS
DNS 470pF
47pF
DGND
DGND DGND DGND
LED Driver
VR+3.3V VR+3.3V
C57
VR3 100pF
K3 DGND
1
P3PHA
3
P3PHB
C62
C68
100pF
100pF
DGND DGND
DGND
VR+3.3V VR+3.3V
C73
VR7
100pF
K7
DGND
1
P7PHA
3
P7PHB
C77
C82
100pF
100pF
DGND DGND
DGND
Title:
Size Number
A3
Date :
File Name:
REV DATE Description
6
7 8
BREAK OFF
VR+3.3V.
VR9B
10KA
VR9A 7 8
10KA
A
C59
2'
JOYSTICK_Y.
0.1uF
C65
0.01uF
1
DGND. DGND.
C69
C70 0.01uF
2
JOYSTICK_X.
0.1uF VR+3.3V.
1
2
JOYSTICK_Y.
3
JOYSTICK_X.
VR+3.3V. 4
Joystick
TE2
DGND.
VR+3.3V
1
2
JOYSTICK_Y
3
JOYSTICK_X
4
B
TE3
DGND
C58
VR4
100pF
K4
DGND
1
P4PHA
3
P4PHB
C63 C64
C
100pF 100pF
DGND
C74
VR8
100pF
K8
DGND
1
P8PHA
3
P8PHB
C78 C79
100pF 100pF
VR
DGND
D
Revision
Sheet of
Design By :
7 8