M-Audio Keystation 49, Service Manual

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C C
B B
A A
Title
Number Revision Size
A3
Date: 2014-4-4 Sheet of
File: C:\Documents and Settings\..\MK33.01.06.SchDoc Drawn By:
06
1
1
2
2
3
3
SW1A
SK-22F12-G7
4
4
5
5
6
6
SW1B
SK-22F12-G7
C8051F320
P00
2
P01
1
P02
32
P03
31
P04
30
P05
29
P06
28
P07
27
P10
26
P1
25
P1
24
P1
23
P1
22
P1
21
P1
20
P1
19
P20
18
P2
17
P2
16
P2
15
P2
14
P2
13
P2
12
P2
11
P30/C2D
10
D+
4
D-
5
VBUS
8
REGIN
7
RST/C2CK
9
VDD
6
GND
3
U2
P3.0/C2D/LED0
USB_D+
USB_D-
USB_D+
USB_D-
P3.0/C2D/LED0
100nF
C6
4.7uF
C3
GND
100nF
C8
4.7uF
C7
+5V
GND
+3.3V
RESET
GND
+VBUS
1
D-
2
D+
3
GND
4
5 6
J1
100nF
C4
CHGND
USB_D-
USB_D+
USB_D-
USB_D+
100nF
C2
SUSTAIN
PH2.0-3Z
1
2
3
J7
+3.3V
GND
MAIN_VOL
100nF
C9
PITCHBEND
PITCHBEND
MODULATION
MODULATION
PEDAL_VOL
PEDAL_VOL
MAIN_VOL
MAIN_VOL
742792651
L2
SFI0603
R10
100nF
C5
GND
22R R6
22R R7
742792651
L1
VBUS
VBUS
VBUS
VBUS
1/4" STEREO JACK
S
1
R
3
T
2
J4
+3.3V
GND
47R
R1
SS12
D1
L3
L4
SUSTAIN
574_CLK
574_CLK
PH2.0-6Z
J8
+3.3V
GND
MODULATION
PITCHBEND
100nF
C10
100nF
C11
LED2
W[0..15]
W0
W1
W2
W3
W4
W5
W6
W7
FR0
FR
FR
FR
FR
FR
FR
FR
1
3
5
7
9
11
13
15
17
19
21
23
25
2
4
6
8
10
12
14
16
18
20
22
24
26
J2
SN74HC574NSR
OE
1
CLK
11
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
Q0
19
Q1
18
Q2
17
Q3
16
Q4
15
Q5
14
Q6
13
Q7
12
GND
10
VC
C
5
20
U1
100nF
C1
+3.3V
GND
574_CLK
574_CLK
GND
W0
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
W11
W12
W13
LED3
LED4
FR0
FR1
FR2
FR3
FR4
FR5
FR6
FR7
W13
W12
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
WR13
WR12
W8
W9
W10
W11
FR0
FR1
FR2
FR3
FR4
FR5
FR6
FR7
GND
W[0..15]
FR[0..7]
W[0..15]
PH2.0-14Z
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J5
1
3
5
7
9 2
4
6
8
10
J10
+3.3V
GND
RESET
RESET
+5V
GND
1K R21
P3.0/C2D/LED0
DEBUG
P3.0/C2D/LED0
LED2
LED3
LED4
WR13
RD2
RD3
GND
RD4
RD5
RD6
RD7 10K
R11
1K R20
+5V
22uF
C12
10K
R3
GND
47pF C25
22pF C24
22pF C23
47pF C13
47pF C14
47pF C15
47pF C16
22pF C17
22pF C18
22pF C19
22pF C20
22pF C21
22pF C22
+3.3V
100nF
C26
22pF
C28
22pF
C27
47pF
C29
47pF
C30
22pF
C31
22pF
C32
22pF
C33
22pF
C34
22pF
C35
22pF
C36
GND
47pF
C37
47pF
C38
47pF
C39
47pF
C40
47pF
C41
47pF
C42
47pF
C43
47pF
C44
47pF
C45
47pF
C46
47pF
C47
47pF
C48
GND
22R
1
3
5
7
2
4
6
8
R17 22R
MK33.01
1
3
5
7 2
4
6
8
R18
W7
22R
1
3
5
7
2
4
6
8
R19
W0
W1
W2
W3
W4
W5
W6
22R
1
3
5
7
2
4
6
8
R15
22R
1
3
5
7
2
4
6
8
R16
10K
1
3
5
7 2
4
6
8
R12
10K
1
3
5
7 2
4
6
8
R13
WR0
WR1
WR2
WR3
WR4
WR5
WR6
WR7
WR8
WR9
WR10
WR11
LED1
WR12
RESET
100nF
C49
GND
100nF
C50
P3.0/C2D/LED0
GND
PT
S0
6
0
3
D2 PT
S0
6
0
3
D3
P
T
S
0603
D8
74279265 L5
74279265 L7
74279265 L6 LED1
100nF
C51
22R R22
22R R23
100nF
C52
CHGND GND
SUSTAIN
220R R24
SUSTAIN
BAT54S
1 2
3
D9
GND
+3.3V