McIntosh MCD550 Service Manual

MCD550
17 18
DISPLAY 751545 SCH
3
PLAY/PAUSE
S7
S8
STANDBY
/ON
OPEN/CLOSE
S2
DISC LAYER
5VD
-32V
33pF
C13
STANDBY/ON
DS4F0V
DS4F5V
10uF
C2
10
R1
DS2
47.5K
R10
47.5K
R12
100
R13
100
R14
100
R15
10uF
C12
100uF
C15
STOP
S3
100
R3
S1
.1µF
C11
3.32K
R17
150
R21
MUTE
S4
S9
1 2
L2
.1UF
C10
.1UF
C16
47uF
C1
DS3
47.5K
R11
100
R4
1 2
L3
S10
S10
S11
S11
S12
S12 S13
S13
S14
S14
S15
S15
S16
S16
S17
S17
S18
S18
S19
S19
S2
S2
S20
S20
S21
S21 S22
S22 S23
S23
S24
S24
S25
S25
S26
S26 S27
S27
S28
S28
S29
S29
S30
S30
S31
S31
S32
S32
S33
S33
S34
S34
S35
S35
S36
S36
S6
S6
S7
S7
S8
S8
S9
S9
.
1
U
F
C5
47.5K
R8
150
R19
150
R18
.1µF
C17
G11
G11
G15
G15
G14
G14
G13
G13
G10
G10
G9
G9
G8
G8
G7
G7
G6
G6
G5
G5
G4
G4
G3
G3
G2
G2
G
1
G1 S1
S1
S3
S3
S4
S4
S5
S5
G12
G12
INPUT
10G
7
8G
9
5G
12
3G
14
13G
17
15G
19
NC
22
P2
24
P5
27
P7
29
P10
32
P12
34
P15
37
P17
39
P20
42
P22
44
P25
47
P27
49
P34
52
P32
54
P29
57
F-
62
F+
1
11G
6
9G
8
12G
5
7G
10
6G
11
4G
13
2G
15
1G
16
14G
18
NC
20
NC
21
P1
23
P3
25
P4
26
P6
28
P8
30
P9
31
P11
33
P13
35
P14
36
P16
38
P18
40
P19
41
P21
43
P23
45
P24
46
P26
48
P36
50
P35
51
P33
53
P31
55
P
30
56
P28
58
DS4
STBY/ON
SG5
1
SG6
2
SG7
3
SG8
4
SG9
5
SG10
6
SG11
7
SG12
8
SG13
9
SG14
10
SG15
11
SG16
12
SG17
13
SG18
14
SG19
15
SG20
16
SG21
17
SG22
18
SG23
19
SG24
20
SG25
21
SG26
22
SG27
23
SG28
24
SG29
25
SG30
26
SG31
27
SG32
28
SG33
29
SG34
30
SG35
31
GR1
32
GR2
33
GR3
34
GR4
35
GR5
36
GR6
37
GR7
38
GR8
39
GR9
40
GR10
41
GR11
42
GR12
43
GR13
44
GR14
45
GR15
46
GR16
47
VEE
48
VSS
49
OSCI
50
OSCO
51
RSTB
52
CSB
53
CLKB
54
DIN
55
VDD
56
P1
57
P2
58
AD2
59
AD1
60
SG1
61
SG2
62
SG3
63
SG4
64
U3
10K
R35
GND
3.3VD
DISC LAYER
INPUT
MUTE
REM OUT
REM IN
GND
3.3V
3.3V
GND
GND
BU3.3V
KEY1
KEY0
REMOCON
FL_DATA
FL_CLK
PWR_LED
STBY_LED
100µF
C3
POWER PCB
CONTROL PCB
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP11
TP9
TP12
.1µF
C18
FL_CS
FL-RST
1K
R2
TP10
1K R5
1K
R6
47uF
C6
10µF
C4
10µF
C7
RST
DATAI
SCLK
CSDIS
GND
DA
12
CS
10
RE
S
ET
9
VDD
7
D
GN
D
5
LGND
4
F-
1
F+
16
DO
13
CP
11
OSC
8
VDISP
6
F-
2
TEST
14
F+
17
DS1
1.5K
R24
4.75K
R23
39pF
C26
GND
MUTE
STBY LED
47.5K
R2
5
47.5K
R26
47.5K
R27
47.5K
R28
.
1
µ
F
C20
TP1
TP15
TP14
TP13
+32V
GND
L1
10µF
C19
.1µF
C8
1
0
µ
F
C14
L5
D1
332
R7
221
R9
100
R16
3
1
2
Q1
4.7
R22
470µF
C9
2.2V
5V 4.2V
2.8V
TP18
TP17
TP16
TP19
.1µF
C21
J1:1
J1:2
J1:3
J1:4
J1:5
J1:6
J1:7
J1:8
J1:9
J1:10
GND
DIGITAL PC B
L4
5VD
J4:1
J4:2
J4:3
J4:4
J4:5
J4:6
J4:7
J4:8
5VD
GND
BACK
GND
NEXT
GND
LEV-D
5VD
LEV-U
INPUT L ED
MUTE L ED
LEV-U
LEV-D
3
2
1
R
G
DS5
DS6
DS7
INPUT
J3:1
J3:2
J3:3
J3:4
J3:5
J3:6
J3:7
J3:8
J3:9
J3:10
J3:11
J3:12
J3:13
J3:14
J3:15
J3:16
J3:17
J3:18
MAIN PCB
2 1 3
Vcc VoutGND
MT1
J2:1
J2:2
J2:3
J2:4
J2:5
J2:6
J2:7
J2:8
J2:9
J2:10
J2:11
2.21k
R29
1
2
4
5
3
VCC
GND
U4
1
2
4
53
VCC
GND
U6
1
2
4
53
VCC
GND
U5
1k
R30
1k
R32
.1µF
C22
47.5k
R31
47.5k
R33
CGND
.1µF
C27
.1µF
C28
33.2
R
36
150
R37
GND
33.2
R20
J5
5
5
5
5
5
5
5
5
5
5
1
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
9
9
9
9
9
9
9
9
9
9
9
9
9

McIntosh MCD550 Specifications

General

SACD playback	Yes
CD changer	-
Device type	Personal CD player
Product color	Black, Silver
Channels quantity	2 channels
Playback disc types	CD
Frequency range	4 - 40000 Hz
Audio formats supported	MP3, WMA
Signal-to-Noise Ratio (SNR)	110 dB
Total Harmonic Distortion (THD)	0.0015 %
Package weight	19200 g
Volume control	Rotary

Weight and Dimensions

Depth	483 mm
Width	445 mm
Height	153 mm
Weight	12700 g