McIntosh MCD550 Service Manual

MCD550
MAIN 751544 SCH 1 of 3
2
9 10
RST
SCLK
DISC LAYER
.01uF
C42
STBY LED
LEV-U
MUTE LED
MUTE
DATAI
CSDIS
100
R70
100
R68
100
R71
2.21K
R72
10K
R47
2.21K
R1
4
7µF
C43
.1UF
C44
.1UF
C47
LEV-D
0
R3
.1UF
C48
INPUT LED
47.5K
R73
22.1
R43
220µF
C27
5VD
3.3VD
GND
12V
3.3VD
POWER
BU3.3V
CLOCKDATA LATCH
0
R4
D1
4700µF
C58
MUTE
4.75K
R46
100pF
C46
OMUTE
HMUTE
22
µF
C5
3
100K
R212
1k
R53
D3
47.5K
R48
220µF
C62
.1UF
C60
.1UF
C45
X
SCL
SDA
100
R44
100
R45
1k
R29
100
R27
100
R55
CSINT
AUTOMUTE
GND
5VD
.1UF
C63
.1UF
C54
RESET
MUTE DIS
.01uF
C38
.01uF
C39
.01uF
C40
.01uF
C41
GND
REM IN
REM OUT
GND
47.5K
R69
STBY/ON
47.5K
R58
47.5K
R42
47.5K
R28
47.5K
R10
D5
D4
475K
R36
D6
DATA IN
IR IN
47µF
C55
.1UF
C57
D8
12
L5
47.5
R67
1.5K
R66
1
2
34
5
6
U16
1K
R61
2
5
1
J6
47.5K
R35
2
5
1
J7
100pF
C51
47.5K
R39
.1UF
C49
3
1
2
Q6
3
1
2
Q5
10K
R40
100K
R41
47.5K
R60
5.62K
R63
22.1
R37
3
1
2
Q4
47.5
R65
47.5K
R38
2
2.
1
K
R62
22.1K
R59
D7
.01uF
C59
.1UF
C56
12
L7
47.5
R64
OUT
POWER
CONTROL
IN
CLR
3
GND
4
Cext
6
Q
5
A
1
VCC
8
B
2
R/Cext
7
U13
47µF
C52
.1UF
C50
2
5
1
J8
2
5
1
J4
12
L6
ON/OFF
1
2
4
53
VCC
GND
U6
1
2
4
53
VCC
GND
U15
1
2
4
53
VCC
GND
U9
1
2
4
53
VCC
GND
U10
1
2
4
5
3
VCC
GND
U12
1
2
4
53
VCC
GND
U11
1
2
4
5
3
VCC
GND
U8
1
2
4
53
VCC
GND
U7
POW ER PCB
DISPLAY PCB
USB ON/OFF
BU3.3V
100
R75
100
R74
USART3_TXD
USART3_RXD
.1UF
C26
47.5K
R211
47.5K
R210
P
5
.
1
20
P5.2
19
VSS
3
P1
.
6
4
VSS
22
P2.0/AD07
1
P4.5/TDI
25
P4.6
24
P0.1/KBI1
42
P0.0/KBI0
43
P4.3/RXD1
27
P0.3/KBI3
40
P5.7
14
P5.6
15
P3.0/XTAL2
12
P1.1/RXD0
9
P1.0/TXD0
10
P1.3/INTO/SDA
7
P4.1/TRIG
29
P2.4/SS
32
P2.5/SPICLK
31
P2.2/MOSI
34
P0.6/KBI6
37
VDD
36
P0.4/KBI4
39
P5.3
18
P5.0
21
P4.7/TCLK
23
VDD
13
P2.1/
AD06
44
P1.7/AD04
2
P1.5/RST
5
P1.2/TO/SCL
8
P3.1/XTAL1
11
P4.4
26
P4.0
30
P2.3/MISO
33
P0.2/KBI2
41
P0.7/T1/KBI7
35
P0.5/KBI5
38
P5.4
17
P5.5
16
P4.2/TXD1
28
P1.4/INT1
6
U5
J2:1
J2:2
J2:3
J2:4
J2:5
J2:6
J2:7
J2:8
J2:9
J2:10
GND
15VA
-15VA
15VA
-15VA
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
J1:15
J1:16
J1:17
J1:18
.01µF
C25
1
2
4
5
3
VCC
GND
U14
3
1
2
Q1
3
1
2
Q2
3
1
2
Q3
6.0MHz
1 3
2
Y2
X
X
.1µF
C87
0
R220
0
R219
GND
X
MODE
X
X
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
5
5
5
5
5
5
5
5
5
5

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