McIntosh MCD301 Service Manual

9 10
MAIN 750771 SCH 1 OF 3
2
(IO)
(IO)
(OD)
5V
RST
CL
REM IN
.01uF
C14
A0
A1
A3
D4
D8
IN
MUTE LED
LEV-D
LEV-U
475k
R45
D5
(IO)
(OD)
(IO)
.1uF
C22
3.3V REGULATOR
POWER
CONTROL
D6
CONTROL
DATA IN
IR IN
DI
CE
100
R9
100
R10
100
R8
2K
R17
10k
R24
15K
R16
MUTE CONT
10k
R29
D1
47uF
C12
.1uF
C13
.1uF
C20
A2
1000pF
C16
GND
3
B
2
Y
4
A
1
VCC
5
U5
.47uF
C19
.1uF
C38
15K
R25
.1uF
C23
1000p F
C26
1uF
C28
15K
R21
8.25k
R33
.01uF
C36
DRIVER
47uF
C32
.1uF
C34
47.5
R56
47.5
R55
12
L3
D7
12
L5
OUT
POWER
100
3 4
R1B
100
3 4
R2B
100
1 2
R2A
0
R6
.1uF
C24
STBY/ON
0
R14
47.5k
R22
47.5k
R27
1000p F
C21
100k
R30
2
1 3
INOUT
U13
8.25k
R32
1.5k
R34
.1uF
C27
4.75M
R38
100pF
C33
47.5k
R47
47.5
R54
12
L4
1.5k
R53
1000p F
C10
5x47k
2
3 4
5
6
1
R7
3 1
2
Q1
3 1
2
Q3
15K
R15
15K
R11
15K
R12
1uF
C17
100uF
C37
47.5k
R18
.1uF
C30
562
R52
22.1k
R50
22.1k
R51
1
2
34
5
6
U31
47.5k
R37
1k
R49
1 2
L2
2
5
1
J5
2
5
1
J3
1000p F
C11
100
1 2
R1A
22.1
R20
6.0MHz
1
3
2
Y1
15K
R13
4.75M
R28
2 1
3
Q7
47.5k
R39
2
5
1
J4
2
5
1
J6
GND
3
B
2
Y
4
A
1
VCC
5
U7
GND
3
B
2
Y
4
A
1
VCC
5
U8
TRIG
6
CTLVOL
3
RESET
4
DISCHG
1
OUTPUT
9
CTLVOL
11
THRS
12
VDD
14
GND
7
OUTPUT
5
THRS
2
TRIG
8
RESET
10
DISCHG
13
U9
P1.2
12
P2.2
13
P2.4
15
P1.1
17
P1.0
18
P0.7
19
P0.6
20
P0.5
22
P0.3
24
P0.2
25
P1.7
4
P2.1
2
P2.6
27
VDD
21
P0.4
23
P2.3
14
P1.3
11
P1.4
10
XTAL/ P3.1
8
RST/P 1.5
6
P1.6
5
P2.5
16
XTAL/ P3.0
9
VSS
7
P0.0
3
P0.1
26
P2.7
28
P2.0
1
U2
10uF
C7
.1uF
C8
OPTICAL OUT
.1uF
C3
.1uF
C1
COAXIAL OUT
.1uF
C2
150pF
C5
12
3
FN1
2
1
J2
47uF
C4
.1uF
C6
47uF
C9
18uH
L1
332
R4
100
R3
13
4 2
T1
1
3
2
GND
VCC
INPUT
OPT1
220uF
C40
220uF
C39
100uH
L6
100uH
L7
7
1
6 5
4
2
3
CX
B\
A
Q
R\Q\
RXCX
16
8
B+
GND
U11A
9
15
10 11
12
14
13
CX
B\
A
Q
R\Q\
RXCX
U11B
2
1
3
7
B+
GND
14
U10A
5
4
6
U10B
10
9
8
U10C
13
12
11
U10D
SPDIF
5VD
GND
GND
NS5V
NS5V
GND
3.3VD
GND
GND
GND
12VA
-12VA
12VA
-12VA
3.3VD
3.3VA
5VA
POWER
POWER IN
NS3.3V
GND
SCLK
DATAI
CS
REM OUT
0
R5
GND
3
B
2
Y
4
A
1
VCC
5
U3
.1uF
C18
GND
3
B
2
Y
4
A
1
VCC
5
U12
.1uF
C31
.1uF
C35
47.5k
R48
1k
R44
2 1
3
Q5
31
2
Q4
681
R43
4.75k
R46
10k
R40
4.7
R42
4.7
R41
D3
3300u F
C29
31
2
Q2
47.5k
R19
-11.5VA
MUTE
4.75k
R23
GND
3
B
2
Y
4
A
1
VCC
5
U4
GND
3
B
2
Y
4
A
1
VCC
5
U60
R31
.47uF
C15
OMUTE
HMUTE
22uF
C25
100k
R36
332
R35
D2
2
1
3
7
B+
GND
14
U1A
5
4
6
U1B
10
9
8
U1C
13
12
11
U1D
47.5k
R26
NS5V
GND
INI
GND
J1 1
J1 2
J1 3
J1 4
J1 5
J1 6
J1 7
J1 8
J1 9
J1 10
J1 11
J1 12
J1 13
J1 14
J1 5
J1 16
J1 17
J1 18
J7 1
J7 2
J7 3
J7 4
J7 5
J7 6
J7 7
J7 8
J7 9
J7 10
J7 11
J7 12
J7 13
J7 14
J7 15
J7 16
J7 17
J7 18
GND
GND
100k
R210
.47uF
C150
220uF
C148
.1uF
C149
GNDC
.1uF
C147
*
15K
R208
J4 1
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
J4 15
J4 13
J4 11
J4 9
J4 8
J4 7
J4 6
J4 5
J4 14
J4 3
J4 18
J4 17
J4 16
J4 14
J4 12
J4 10
J4 2
J4 1
J4 2
J4 3
J4 4
J4 5
J4 6
J4 7
J4 8
J4 9
J4 10
J4 11
J4 12
J4 13
J4 14
J4 15
J4 16
J4 17
J4 18
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6

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