Akai MPC Service Manual

1 1
2 2
3 3
4 4
5 5
6 6
D D
C C B B
A A
NC
MAIN LEFT OUT
MAIN RIGHT OUT
NC
NC
ASSIGNABLE OUT 1
Output (Full Scale)
NC
DAC 0dBFS
Analog Outputs
ASSIGNABLE OUT 2
S/PDIF
S/PDIF +
SUM
USB OUT 3/4
2nd order LPF 0dB Gain
4.4dBV (differential) -1.6dBV per leg
+15dBV
+4.4dBV SE
~+5dBV full scale
MUTE
MONITOR SEND R MONITOR SEND L DAC1 SEND R DAC1 SEND L MAIN RETURN R MAIN RETURN L HP RETURN HP RETURN
3/4 1/2 (w/ mon mix)
TO FRONT PANEL PCB
TO TOP PANEL PCB
ANALOG IN MONITOR
0dB gai n for S/PDIF +9dB gai n for A nal og In
frompage2
10.6dB Gain
Output (Full Scale with volumeknob at Max) +16.4dBV
USB OUT 1/2
0dB
Gain
+4.4dBV di ff
9-79-0604-B-0
9-40-0604-B
MJS
ANALOG OUT-20120425.SchDoc
ACVO Rear Analog PCB
ASSY NUMBER:
123456
D C B A
C D B A
COMPANY: TITLE: PART NUMBER: FILENAME: SCALE:
RELEASED: DRAWN: DATED:
DATED:
SIZE:
SHEET: OF
32
Akai Professional
1.40K 1%
R79
2SD2114K
Q2
220 ohm
R80
1000pF
C46
220 ohm
R81
1.40K 1%
R82
2SD2114K
Q4
220 ohm
R83
1000pF
C47
220 ohm
R90
T
TS
R
S
RS
J9
T
TS
R
S
RS
J10
MBT4403
Q16
1000pF
C90
1000pF
C91
BAW56
1 2
3
D13
1.40K 1%
R70
2SD2114K
Q1
220 ohm
R71
1000pF
C65
220 ohm
R72
1.40K 1%
R73
2SD2114K
Q3
220 ohm
R74
1000pF
C66
220 ohm
R84
T
TS
R
S
RS
J7
T
TS
R
S
RS
J8
1000pF
C70
1000pF
C71
BAW56
1 2
3
D20
1K
R128
100K
R41
MBT4401
Q8
1000pF
C61
1.30K 1%
R68
2.55K 1%
R86
5.36K 1%
R52
5.36K 1%
R55
6.19k 1%
1 2
R51
6.19k 1%
1 2
R54
5.36K 1%
R104
5.36K 1%
R105
220pF
C92
220pF
C93
0.1uF
C149
47uF,16V
C150
0.1uF
C151
47uF,16V
C152
1 2 3 4 5 6 7 8 9
10
J13
0.1uF
C11
47uF,16V
C26
0.1uF
C30
47uF,16V
C32
1 2 3 4 5 6 7 8 9
10 11 12 13 14
J12
47uF,16V
C73
47uF,16V
C74
MC33079
411
U11E
+
5
-
6
7
U11B
+
3
-
2
1
U11A
+
10
-
9
8
U11C
+
12
-
13
14
U11D
MC33078
+
5
-
6
7
U13B
MC33078
+
3
-
2
1
U13A
MC33078
84
U13C
S31
S19
S4
S5
S6
S7
MC33079
411
U12E
+
5
-
6
7
U12B
+
3
-
2
1
U12A
+
10
-
9
8
U12C
+
12
-
13
14
U12D
3.01k 1%
R119
1.40K 1%
R120
3.01k 1%
R121
1.40K 1%
R135
100pF
C23
100pF
C31
47uF,16V
C102
0.1uF C97 0.1uF C50
0.1uF
C43 0.1uF C59
0.1uF
C98 0.1uF C100
1000pFC62
1000pF
C63
2.55K 1%
R56
2.55K 1%
R63
2.55K 1%
R69
1.30K 1%
R85
1000pF
C117
1000pF
C8
1.30K 1%
R42
2.55K 1%
R45
1000pF
C41
1000pF
C42
2.55K 1%
R46
2.55K 1%
R87
2.55K 1%
R88
1.30K 1%
R89
1000pF
C64
1000pFC67
1.30K 1%
R96
2.55K 1%
R97
1000pFC68
1000pF
C69
2.55K 1%
R100
2.55K 1%
R106
2.55K 1%
R117
1.30K 1%
R118
1000pF
C72
1000pF
C76
1.30K 1%
R122
2.55K 1%
R123
1000pFC78
1000pF
C82
2.55K 1%
R125
2.55K 1%
R126
2.55K 1%
R127
1.30K 1%
R129
1000pF
C87
1000pF
C119
1.30K 1%
R130
2.55K 1%
R131
1000pF
C120
1000pF
C121
2.55K 1%
R133
2.55K 1%
R134
2.55K 1%
R140
1.30K 1%
R141
1000pF
C122
1000pF
C123
1.30K 1%
R142
2.55K 1%
R143
1000pFC125
1000pF
C128
2.55K 1%
R144
2.55K 1%
R145
2.55K 1%
R146
1.30K 1%
R147
1000pF
C130
DAC2L
DAC1R
DAC2R
MONITORR MONITORL DAC1L
AGND AGND
AGND
AGND AGND
AGND
AGND AGND
AGND
AGND AGND
AGND
MUTE
AGND AGND
ANALOG_IN_L ANALOG_IN_R
AGND AGND
AGND
+12VA -12VA
AGND AGND
MUTE
AGND
+12VA -12VA
AGND AGND
MUTE
CHGND CHGND
DAC2L+
DAC2L-
DAC2R+
DAC2R-
DAC3L+
DAC3L-
DAC3R+
DAC3R-
DAC1L+
DAC1L- DAC1R-
DAC1R+
AGND AGND
AGND
+12VA
-12VA
AGND
+12VA
-12VA
AGND
+12VA
-12VA
AGND AGND AGND AGND AGND AGND
AGND AGND AGND AGND
CCGND DGND
CC01 0.1uF CC02 0.1uF
CC03 0.1uF
CCGND AGND
47uF,16V
C101
S18
S20
S21
CHGND
S22
S23
S24
CHGND
(+)
Q14 MBT4401
10K
R91
MUTE CONTROL
CODEC_MUTE MutestateAN_POWER_EN POWER_FAIL
H L Z ON
ON OFF
X X X
X
H L L ONXX
X ONZX HX X ON
(fr omcodec) (fr omAtmel
MCU)
(fr om+12V monitor circuit)
1
2 3
MBT4401
Q13
+5VA
-12VA
DGND
DGND
AN_POWER_EN
DGND
POWER_FAIL
DGND
+3.3V
POWER_FAIL
MUTE
R93 10K
Q12 MBT4401
R92 100K
R161 1K
+5VA +5VA
AGND
R29 100K 1%
AGND
R39 100K 1%
C53 4.7uF
AGND
NC NC
NC NC
12
10K
R103
12
100k
R108
12
4.7uF C77
1
2 3
MBT4401
Q20
USB_ENUM
+3.3V
AGND
DGND
2012.04.24

Akai MPC Specifications

General

Impedance	16 Ω
Driver unit	50 mm
Magnet type	Neodymium
Ear coupling	Circumaural
Headphone frequency	12 - 24000 Hz
Headphone sensitivity	114 dB
Cable length	2.1 m
Product color	Black, Red, Silver
Wearing style	Head-band
3.5 mm connector	Yes
Connectivity technology	Wired