McIntosh MCD550 Service Manual

11 12
MAIN 751544 SCH 2 of 3
2
1.21k
R100
RIGHT+ FILTER
1.65k
R107
LEFT+ FILTER
47µF
C74
1.21k
R105
100
R104
1.21k
R103
1.21k
R102
100
R101
RIGHT- FILTER
1.65k
R108
LEFT- FILTER
1.65k
R106
.1UF
C75
10k
R9 0
1.65k
R109
5
6
7
+
-
U20:2
3
2
1
+
-
8 4
B+
B-
U20:1
3
2
1
+
-
8
4
B+
B-
U19:1
5
6
7
+
-
U19:2
14.5VA
-14.5VA
14.5VA
-14.5VA
-14.5VA
3
2
1
+
-
84
B+
B-
U17:1
5
6
7
+
-
U17:2
.001uF
C66
.001uF
C67
681
R86
681
R87
3
2
1
+
-
8 4
B+
B-
U18:1
5
6
7
+
-
U18:2
.001uF
C68
.001uF
C69
681
R88
681
R89
14.5VA
-14.5VA
14.5VA
-14.5VA
LEFT- I/V
CONVERTER
LEFT+ I/V
CONVERTER
RIGHT- I/V
CONVERTER
RIGHT+ I/V
CONVERTER
1.21k
R96
4700µ F
C160
470µF
C159
.1UF
C158
.
1
U
F
C157
.1UF
C156
100µF
C155
.1UF
C146
1.1k
R214
1.1k
R215
1.1k
R216
1.1k
R217
0V
0V
0V
0V
-3.3V
-3.3V
-3.3V
-3.3V
.1UF
C64
1K
R81
.1UF
C65
GND
2
E/D
1
OUT
3
VDD
4
Y1
L1
.1UF
C1
100µF
C2
47.5
R11
10K
R8
10K
R9
G
680uH
L2
.1UF
C172
.1UF
C170
.1UF
C171
10µF
C94
5.62
R122
10µF
C95
5.62
R123
.1UF
C93
.1UF
C92
-14.5VA
14.5VA
1.65k
R51
1.65k
R52
1.65k
R49
1.65k
R50
1
2
4
5
3
VCC
GND
U35
470µF
C162
.1UF
C3
0
R54
0
R209
0
R56
0
R57
.0047µF
C76
.0047µ F
C77
.0047µF
C78
.0047µF
C79
100µH
L8
LEFT+
LEFT-
RIGHT+
RIGHT-
AVCC_L
14
DVCC_T
48
SDA
16
DATA_CLK
46
SCL
17
DATA2
44
XI(MCLK)
19
DATA4
42
VDD
21
DATA6
40
GND
23
DATA8
38
DAC7
12
DAC
5
B
10
GND
8
AVCC_L
6
DAC3
4
D
AC1B
2
VDD
2
5
DAC8
B
27
DAC6
29
AVCC_R
31
DAC4
33
DAC2B
35
DAC7B
11
DAC5
9
RESET
7
G
N
D
5
DAC3B
3
DAC1
1
VDD
13
GND
15
XO
18
DATA1
45
DATA3
43
VDD
47
GND
22
AVCC_R
24
DVCC_B
20
DATA7
39
GND
37
DATA5
41
DAC8
26
DAC6B
28
AUTOMUTE
30
GND
32
DAC4B
34
DAC2
36
U40
15VA
-15VA
TAB
4
VOUT
2
VIN
3
GND
1
U41
.1UF
C154
.1UF
C153
.1UF
C152
74LV
C
157AD
Y
3
GND
4
A/B
6
Y
5
A
1
VCC
8
B
2
G
7
U38
GND
8
3Y
9
2B
6
3A
11
1B
3
4A
14
A/B
1
Vcc
16
1A
2
1Y
4
2A
5
2Y
7
3B
10
4Y
12
4B
13
G
15
U36
GND
8
3Y
9
2B
6
3A
11
1B
3
4A
14
A/B
1
Vcc
16
1A
2
1Y
4
2A
5
2Y
7
3B
10
4Y
12
4B
13
G
15
U37
47.5K
R7
47.5K
R6
47.5K
R5
47.5K
R2
AUTOMUTE
3.3VD
RESET
SDA
SCL
J3:1
J3:2 J3:3 J3:4 J3:5
J3:6
J
3:7
J3:8
J3:9
J3:10 J3:11 J3:12 J3:13
J3:14 J3:15
J3:16
J3:17
J3:18 J3:19
J3:20
J3:21
J3:22
J3:23
J3:24 J3:25 J3:26
J3:27
PCML
GND
PCMR
G
N
D
LRCK/DSDR
GND
DSDL
GND
PBCK
GND
DSCS
DSDI
DSCLK
GND
DSRST
GND
MODE
AMUTE
DOUT 3.3VD
INT/EXT
DBCK
GND
MC
LK2
GND
MCLK
GND
22.1
R193
22.1
R208
22.1
R150
.01µF
C35
.01µF
C34
.01µF
C33
3.32K
R80
1K
R78
1K
R77
.1UF
C84
.1UF
C86
47.5K
R82
100
R83
100
R84
100
R85
47.5K
R79
47µF
C72
47µF
C148
.1UF
C109
.1UF
C114
CSEL
12
MCKO1
14
MCKO2
15
DGND3
17
SCKO0
19
VDD3
20
XT2
11
VDD2
13
DGND2
16
SCKO1
18
AGND
9
SR
7
FS2
6
DGND1
4
SCKO2
2
VDD1
1
XT1
10
SCKO3
3
FS1
5
VCC
8
U24
12pF
C110
12pF
C90
.1UF
C71
.1UF
C113
47.5
R99
100
R155
47.5
R97
100
R98
47.5
R93
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
RXP3
RXP2
RXP1
RXP0
RXN
VA
AG ND
FILT
RST
RXP4
RXP5
RXP6
RXP7
AD 0/C S
OLR CK
OSC LK
SD OUT
OMC K
RMC K
VD
DG ND
GPO 0
GPO 1
VL
AD 2/G PO 2
SD A/CDO U T
SC L/C CLK
AD 1/C DIN
U1
CSINT
.01µF
C29
.01µF
C30
.01µF
C31
.01µF
C32
DATA
CLOCK
.1UF
C88
RERR MUTE
3.3VD
SDOUT
12
OLRCK
14
MS_SEL
15
VL
17
SAIF
19
SRC_UNLOCK
20
TDM_IN
11
OSCLK
13
GND
16
SAOF
18
SDIN
9
ILRCK
7
BYPASS
6
GND
4
XTI
2
XTO
1
MCLK_OUT
10
VD
3
RST
5
ISCLK
8
U31
SRC UNLOCK
3.92K
R91
3.92K
R92
3.32K
R152
4.75K
R94
1K
R95
47.5K
R110
1
2
4
5
3
VCC
GND
U4
1
2
4
53
VCC
GND
U30
2.5VD
1
2
4
53
VCC
GND
U34
.1UF
C115
1
2
4
53
VCC
GND
U42
2
.1UF
C61
100µF
C70
47.5
R76
AMUTE
47.5K
R151
INT/EXT
3.32K
R
153
MODE
1
2
4
53
VCC
GND
U33
1
2
4
5
3
VCC
GND
U39
.1µF
C149
MUTE
47.5k
R160
47.5k
R154
0
R161
0
R162
1
2
4
5
3
VCC
GND
U44
.1µF
C150
1
2
4
53
VCC
GND
U43
47.5k
R163
0
R191
47.5k
R159
0
R158
DIGITAL PCB
560pF
C80
560pF
C81
560pF
C82
560pF
C83
.001µF
C28
.01µF
C36
.01µF
C37
.022µF
C73
10µF
C85
10µF
C89
10µ F
C91
L3
100µH
L12
L13
100µH
L14
VOUT
3
GND
2
VIN
1
TAB
4
U32
21
27MHz
Y3
2
1
3
4
E/ D VDD
OUTGND
24. 5760
Y4
X
X
X X
X
22pF
C173
X
47
R221
9 9
9 9 9
9 9
9 9 9
9 9
9 9 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