McIntosh MCD301 Service Manual

MCD301
MAIN 750771 SCH 2 OF 3
2
11 12
LEFT
4
1
3
2
G
S
-
+
J11
4
1
3
2
G
S
-
+
J12
2.94k
R100
RIGHT+ FILTER
2.21k
R107
LEFT+ FILTER
RIGHT
UNBALANCED
OUTPUT
RIGHT
OUTPUT
UNBALANCED
LEFT
BALANCED
.1uF
C45
10uF
C46
.1uF
C58
10uF
C56
10uF
C62
.1uF
C55
10uF
C57
47uF
C74
2.94k
R105
100
R104
2.94k
R103
2.94k
R102
100
R101
RIGHT- FILTER
330pF
C83
2.21k
R108
330pF
C81
LEFT- FILTER
2.21k
R106
330pF
C80
1.33k
R119
.0022uF
C85
1.33k
R118
.0022uF
C84
.001uF
C91
.001uF
C90
.001uF
C89
.001uF
C88
47uF
C101
47uF
C100
47uF
C99
10uF
C94
47uF
C98
5.62
R122
47uF
C97
47uF
C96
499
R135
499
R134
499
R133
.1uF
C109
499
R132
499
R131
499
R130
3
J10B
2
J10A
.1uF
C108
OUTPUT
BALANCED
OUTPUT
.1uF
C47
.1uF
C59
.1uF
C75
11k
R90
2.21k
R109
330pF
C82
10uF
C95
5.62
R123
.1uF
C110
.1uF
C111
2.67k
R116
2.67k
R115
2.67k
R113
2.21k
R95
.1uF
C93
2.21k
R99
.0033uF
C77
2.67k
R117
1.33k
R121
.0022uF
C87
6
5
7
-
+
U20B
FIXED RIGHT
UNBALANCED
OUTPUT DRIVER
2.21k
R98
.0033uF
C76
2
3
1
-
+
8 4
B+
B-
U20A
2.67k
R114
2.21k
R97
1.33k
R120
.0022uF
C86
FIXED LEFT
UNBALANCED
OUTPUT DRIVER
.0033uF
C78
2.67k
R112
2.67k
R110
47.5k
R129
FIXED RIGHT-
BALANCED
OUTPUT DRIVER
FIXED RIGHT+
BALANCED
OUTPUT DRIVER
2
3
1
-
+
8 4
B+
B-
U23A
.1uF
C92
47.5k
R126
47.5k
R125
6
5
7
-
+
U22B
47.5k
R124
2
3
1
-
+
8
4
B+
B-
U22A
1 2
3
FN2
18uH
L8
12
13
10
7
8
5
2
3
17
16
19
22
21
24
27
26
9
11
14
1
4
6
20
18
15
28
25
23
MC
MDO
VDD
M\S\
DGND
SCK
PDATA
DSDR
DBCK
IREF
MDI
R\S\T\
DSDL
PBCK
VCC2R
AGND3R
IOUTR+
AGND1
VCOMR
VCOML
AGND2
IOUTL+
IOUTL-
AGND3L
IOUTR-
VCC1
VCC2L
PLRCK
U15
6
5
7
-
+
U21B
2
3
1
-
+
8
4
B+
B-
U19A
.0033uF
C79
2.67k
R111
6
5
7
-
+
U19B
2
3
1
-
+
8 4
B+
B-
U21A
47.5k
R128
FIXED LEFT-
BALANCED
OUTPUT DRIVER
47.5k
R127
FIXED LEFT+
BALANCED
OUTPUT DRIVER
6
5
7
-
+
U23B
3
21
Q8
3
21
Q9
3
21
Q10
3
21
Q11
3
21
Q12
3
21
Q13
100
R136
100
R137
100
R139
100
R138
100
R140
100
R141
1k
R142
1k
R143
1k
R144
1k
R145
1k
R146
1k
R147
47uF
C103
47uF
C104
47uF
C102
47uF
C105
47uF
C106
47uF
C107
OMUTE
-12VA-11.5VA
12VA11.5VA
LEFT+
LEFT-
RIGHT+
RIGHT-
-11.5VA
11.5VA
11.5VA
-11.5VA
11.5VA
-11.5VA
11.5VA
-11.5VA
-11.5VA
11.5VA
-11.5VA
2
3
1
-
+
84
B+
B-
U17A
6
5
7
-
+
U17B
.0022uF
C66
.0022uF
C67
365 R91
365
R86
365
R92
365
R87
470uF
C70
470uF
C71
150
R78
150
R80
2.67k
R79
2.67k
R81
100pF
C65
FIXED
FIXED
FIXED
FIXED
2
3
1
-
+
8 4
B+
B-
U18A
6
5
7
-
+
U18B
.0022uF
C68
.0022uF
C69
365 R93
365
R88
365
R94
365
R89
470uF
C72
470uF
C73
150
R82
150
R84
2.67k
R83
2.67k
R85
100pF
C64
11.5VA
-11.5VA
11.5VA
-11.5VA
LEFT- I/V
CONVERTER
LEFT+ I/V
CONVERTER
RIGHT- I/V
CONVERTER
RIGHT+ I/V
CONVERTER
5VA
47uF
C60
47uF
C61
10k
R77
47.5
R67
3.3VA
GND
2
E/D
1
OUT
3
VDD
4
Y2
12
GND
13
A13
15
A15
17
CLK1/I
18
B0
20
22
43
A0/GOEO
44
41
38
39
36 34
11
9
VCCO
6
A8
7
A7
4
TDI
1
A5
2
A9
8
10
A12
14
A6
3
GND
5
A14
16
CLK2/I
19
B1
21
42
35
37
40
23
25
27 28
30
32
33
24
26
29 31
A1
45
A2
46
A3
47
A4
48
U14
100uF
C53
.1uF
C54
12
3
FN3
47.5
R75
47.5
R76
10k
R73
.1uF
C51
.1uF
C44
.1uF
C43
.1uF
C50
100pF
C48
100pF
C52
100pF
C49
J8 1
J8 2
J8 3
J8 4
J8 5
J8 6
J8 7
J8 8
J8 9
J8 10
J8 11
J8 12
J8 13
J8 14
J8 15
J8 16
J8 17
J8 18
J8 19
J8 20
J8 21
J8 22
J8 23
SPDIF
GND
MUTE
GND
DSDL/PDL
DSDR/PDR
GND
PLRCK
GND
GND
MS
MDI
MC
MDO
RST
PURE DIR
MODE3
GND
MCLK
GND
MCK2
GND
DBCK
MODE
PBCK
J8 25
J9 1 J9 2 J9 3 J9 4 J9 5
J9 6
J9 7 J9 8 J9 9 J9 10
2K
R74
47uF
C42
332
R72
100pF
C41
3.3VD
22.1
R57
22.1
R58
22.1
R59
22.1
R60
22.1
R62
22.1
R69
22.1
R71
47.5
R70
J8 24
2
3
1
12 13
4
5
VL VDD
VSS GND
U16A
15
14
16
U16B
10
11
9
U16C
7
6
8
U16D
-11.5VA
11.5VA
.1uF
C63
47.5
R66
47.5
R65
47.5
R64
47.5
R63
SPDIF
MUTE
8x47k
2 3 4 5 6 7
8
9
1
R68
47.5k
R61
2.55k
R96
CX251 25
CX251 24
CX251 23
CX251 22
CX251 21
CX251 20
CX251 19
CX251 18
CX251 17
CX251 16
CX251 15
CX251 14
CX251 13
CX251 12
CX251 11
CX251 10
CX251 9
CX251 8
CX251 7
CX251 6
CX251 5
CX251 4
CX251 3
CX251 1
CX251 2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
-4.4V
-4.4V
-4.4V
-4.4V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V

McIntosh MCD301 Specifications

General

Frequency range	4 - 40000 Hz
Audio formats supported	MP3
Signal-to-Noise Ratio (SNR)	110 dB
Total Harmonic Distortion (THD)	0.002 %
CD-RW playback	Yes
Playback disc formats	CD audio, SACD
CD changer	No
Device type	Personal CD player
Product color	Black
Channels quantity	2 channels
Disc loading type	Tray
Number of optical discs	1 discs
Remote control type	IR

Weight and Dimensions

Depth	419.1 mm
Width	444.5 mm
Height	152.4 mm
Weight	12800 g