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Akai MPC Service Manual

Akai MPC
52 pages
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1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
MIC/LINE IN
MIC/LINE IN
PHONO IN RIGHT
PHONO IN LEFT
PHONO/LINE SWITCH
Phono(nomi nal)
Phono Gain +40dB @1kHz
LineGain 0dB
LI NE MICMICLINE
Li ne input (nomi nal )
-10dBV
Mic Gain 35.01dB
Li ne Gain ~0dB
LINE
MIC
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
-8dBV-10dBV
Li ne input (nomi nal ) Phono (nominal)
-10dBV1.8dBV
-10dBV i nput4dBu Input
Li ne input target s(nomi nal)
-43dBV
(for FS at ADC)
MIN
(w/o clipping)
MAX
-18dBV
MIC input(maximum)
+/- reversed to force
at gain control.
inversi on at gain control.
in order to cancel out phase
Phase inverted here
-48dBV
Fixed Inverting Gain
Phono(nomi nal)Li ne input (nomi nal )
1.7dBV 3.7dBV
N/C
N/C
RIGHT
to cancel phasei nversion
phase i nversion in order
+/- reversed to force
at gain control.
to cancel phasei nversion
phase i nversion in order
LEFT
ANALOGI / O and BUFFERING
+7dB
TO TOP PANEL
TO PHONOGROUND LUGHEADER
GAIN
~-50dB to +25dB
(w/o clipping)MAX Input
Li ne: +9dBV
Phono: -31dBV
-19dBV
(for FS at ADC)
MIN
(w/o clipping)
MAX
Li ne input(maxi mum)
16dBV
To page3
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
31
9-79-0604-B-0
9-40-0604-B
Akai Professional
MJS
100 ohm
R4
47.5K 1%
R3
47uF,16V
C3
562 ohm 1%
R5
1500pF
C1
4700pF
C2
56.2K 1%
R6
681K 1%
R19
681K 1%
R20
56.2K 1%
R7
4700pF
C12
1500pF
C13
562 ohm 1%
R8
47uF,16V
C14
47.5K 1%
R2
100 ohm
R9
100pF
C15
100pF
C16
1
2
3
4
5
6
S2
1
2
3
4
5
6
7
J2
47pF
C17
47pF
C18
47uF,63V
C40
47uF,63V
C39
1
2
3
4
5
6
7
J4
47pF
C19
47pF
C20
47uF,63V
C38
47uF,63V
C37
TL074
+
3
-
2
1
U4A
TL074
+
5
-
6
7
U4B
TL074
+
12
-
13
14
U4D
0.1uFC57
0.1uF
C81
INA163
VO1
1
2
GS1
3
-
4
+
5
V-
6
7
8
9
10
V+
11
GS2
12
13
VO2
14
SENSE
REF
U6
100pF
C49
100 ohm
R66
100 ohm
R67
0.1uFC56
0.1uF
C80
INA163
VO1
1
2
GS1
3
-
4
+
5
V-
6
7
8
9
10
V+
11
GS2
12
13
VO2
14
SENSE
REF
U5
100pF
C48
100 ohm
R64
100 ohm
R65
1
2
3
4
5
6
S1
1000uF,6.3V
C86
1000uF,6.3V
C85
107 1%
R99
107 1%
R98
47.5K 1%
R61
47.5K 1%
R62
47.5K 1%
R59
47.5K 1%
R60
TL074
+
10
-
9
8
U4C
5.36K 1%
R10
2.43K 1%
R57
5.36K 1%
R11
DNS_4.3MR114
DNS_4.3M
R113
47uF,16V
C21
47uF,16V
C25
15K
R35
15K
R34
15K
R15
15K
R36
100K
R33
100K
R32
BAV99
1
2
3
D2
BAV99
1
2
3
D3
100KR18
100K
R21
BAV99
1
2
3
D1
BAV99
1
2
3
D4
BAV99
1
2
3
D10
BAV99
1
2
3
D11
1000pF
C103
1000pF
C104
10K 1%R136
10K 1%R167
100pFC36
100pF
C118
274 ohm 1%
R171
274 ohm 1%
R172
47uF,16V
C126
47uF,16V
C127
J18
1
2
3
4
5
6
7
8
9
10
11
12
J5
R23
5.36K 1%
R24
5.36K 1%
MC33079
411
U2E
MC33079
+
12
-
13
14
U2D
R25
5.36K 1%
R26
5.36K 1%
MC33079
+
10
-
9
8
U2C
R75 0 ohm
R76 0 ohm
R77 0 ohm
R78 0 ohm
MC33079
+
3
-
2
1
U2A
MC33079
+
5
-
6
7
U2B
0.1uF
C129
0.1uF
C6
0.1uF
C94
0.1uF
C95
TL074
411
U4E
2.43K 1%
R58
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
47uF,63V C132
47uF,63V
C133
47uF,63V C134
47uF,63V
C135
BC856
Q7
BC856
Q9
47.5K 1%
R157
47.5K 1%
R158
15K
R13
15K
R14
15K
R16
15K
R17
BC856
Q10
BC856
Q11
47.5K 1%
R159
47.5K 1%
R160
100pFC4
100pFC5
MIC/LINE _IN_R-
MIC/LINE_IN_R+
MIC/LINE_IN_R
MIC/LINE_IN_L
PHONO/LINE_IN_R
PHONO/LINE_IN_L
FB_R
OUT_R
OUT_L
FB_L
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
+12VA
-12VA
-12VA
+12VA
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
+12VA
-12VA
+12VA
-12VA
+12VA
-12VA
+12VA
-12VA
+12VA
-12VA
+12VA
-12VA
AGND
ANALOG_IN_L
ANALOG_IN_R
ADC1L+
ADC1L-
ADC1R+
ADC1R-
-12VA
+12VA
AGND
-12VA
+12VA
AGND
CHGND
CHGND
CHGND
CHGND
AGND
+50V
+12VA
+50V
+12VA
1
2
3
RJ-1106-09-0300B
J3A
4
5
6
RJ-1106-09-0300B
J3B
C33 220pF
C7 220pF
C44 1000pF C35 1000pF
To page3
ANALOG_IN_L
ANALOG_IN_R
AGND
AGND
N/C
PHONO
LINE
N/C
1
2 3
2SD2114K
Q15
1
2 3
2SD2114K
Q17
1 2
5.36k 1%
R95
1 2
5.36k 1%
R101
12
47.5k 1%
R102
AGND
+12VA
-12VA
2012.04.24

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Akai MPC Specifications

General IconGeneral
Impedance16 Ω
Driver unit50 mm
Magnet typeNeodymium
Ear couplingCircumaural
Headphone frequency12 - 24000 Hz
Headphone sensitivity114 dB
Cable length2.1 m
Product colorBlack, Red, Silver
Wearing styleHead-band
3.5 mm connectorYes
Connectivity technologyWired

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