McIntosh MA7000 Service Manual

15 16
MAIN 750856 SCH 3 of 5
3
R
2
L
1
R L R L R L R L R L R L R L
FROM CD1 BALANCED FROM DVD BALANCED FROM PREAMP
TO CD1 BAL TO DVD BAL TO PREAMP
6B
6B
6A
6A
7
7
GND
BAL L
GND
BAL L
GND
RIGHT OUTPUT 2
REC PWR AMP TUNER REC
INPUTS
SERVER CD2 PHONO
LEFT
RIGHT
LEFT
-15V
6B
6B
-15V
6A
6A
-15V
7
+15V
7
L INP
7
R INP
6B
6A
7
10k
R41
10k
R42
100uF
C29
.1uF
C28
.1uF
C30
LEFT OUTPUT 2
221
R49
2
1
3
4
K2
221
R53
D15
2
1
3
4
K4
8
J21E
9
J21F
2
1
3
4
K5
2
1
3
4
K6
5
J21C
6
J21D
221
R58
221
R60
2
1
3
4
K7
2
1
3
4
K8
2
J21A
3
J21B
11
J22G
12
J22H
10uF
C40
10uF
C41
2
1
3
4
K9
2
1
3
4
K10
8
J22E
9
J22F
10uF
C43
10uF
C45
2
1
3
4
K12
2
1
3
4
K14
2
1
3
4
K11
2
1
3
4
K13
10uF
C42
10uF
C44
5
J22C
6
J22D
10uF
C47
10uF
C49
2
1
3
4
K16
2
1
3
4
K18
2
1
3
4
K15
2
1
3
4
K17
10uF
C46
10uF
C48
3
J22B
2
J22A
10uF
C51
10uF
C53
2
1
3
4
K20
2
1
3
4
K22
2
1
3
4
K19
2
1
3
4
K21
10uF
C50
10uF
C52
R L
10uF
C54
10uF
C55
3
J23B
47.5k
R77
470uF
C59
47.5
R76
47.5k
R75
470uF
C58
47.5
R74
1k
R79
1k
R78
7.5k.5%
R81
89.8k.5%
R83
7.5k.5%
R80
89.8k.5%
R82
.1uF
C70
47.5
R85
PHONO AMP
RIGHT
PHONO AMP
47uF
C75
47uF
C74
.1uF
C77
2.21
R91
.1uF
C76
2.21
R90
+15V
+15V
7
7
GND
100uF
C31
22.1k
R50
22.1k
R48
22.1k
R54
22.1k
R52
22k
3
4
R56B
22k
3
4
R59B
220k
3
4
R61B
220k
3
4
R63B
22k
3
4
R62B
220k
3
4
R65B
22k
3
4
R64B
220k
3
4
R67B
22k
3
4
R66B
221
R68
.01uF
C68
.01uF
C69
.033uF
C71
.033uF
C72
1
4
6
7
8
2
3
5
-
+
U15
1
4
6
7
8
2
3
5
-
+
U14
2
3
1
-
+
84
U16A
6
5
7
-
+
84
U16B
47.5
R84
L PRE
OUTPUTS
J18:3
BAL R
J18:1
J18:11
J17:3
BAL R
J17:1
J17:11
10k
R43
10k
R44
J16:7
R PRE
J16:2
1
3
2
G
-
+
J19
1 3
2
G
-
+
J20
221
R47
221
R51
2
1
3
4
K1
2
1
3
4
K3
10k
R46
D16
2
J23A
100pF
C66
47pF
C67
47pF
C65
INPUT BUFFER
10uF
C57
100pF
C62
47pF
C63
22.1k
R70
22.1
R89
.1uF
C73
INPUT BUFFER
10uF
C56
100pF
C60
47pF
C61
22.1k
R69
22.1
R88
J18:7
J18:5
J17:7
J17:5
J16:4
J16:3
J16:5
J16:8
6
5
7
-
+
8
4
U13B
2
3
1
-
+
8
4
U13A
J16:1
10k
R45
22k
1
2
R56A
22k
1
2
R59A
220k
1
2
R61A
220k
1
2
R62A
220k
1
2
R64A
220k
1
2
R67A
220k
1
2
R63A
220k
1
2
R65A
22k
1
2
R66A
221
R71
100pF
C64
J16:6
UNBAL TO BAL AMP
UNBAL TO BAL AMP
CD1 L
CD1 L
CD1 R
CD1 R
DVD L
DVD L
DVD R
DVD R
PHONO L
PHONO L
PHONO R
PHONO R
REC L
REC L
REC R
REC R
+15V -15V
+15V -15V
+15V
-15V
+15V
-15V
+15V
-15V
+15V
-15V
+15V
-15V
+15V
-15V
+15PH
-15PH
-15PH
+15PH
-15PH
+15PH
+15V
+15V
-15V
-15V
CD1 RLY
CD2 RLY
DVD RLY
SRV RLYREC RLYTUN RLY
PHONO RLY
REC OUT RLY OUT1 RLYOUT2 RLY
+5V
+5V
+5V
+5V
+5V
+5V+5V
+5V
+5V+5V
L AMPR AMP
10uF
C33
10uF
C35
10uF
C36
10uF
C37
10uF
C38
10uF
C39
10uF
C32
10uF
C34
221
R55
221
R57
GND
6A
J17:9
GND
6B
J18:9
221k
R73
221k
R72
6A
N/C
J17:6
N/C
6A
J17:8
6B
N/C
J18:6
N/C
6B
J18:8
221k
R86
221k
R87
22uF
C27
22uF
C26
GP1

McIntosh MA7000 Specifications

General

Amplifier class	-
Frequency range	20 - 20000 Hz
Audio output channels	2.0 channels
Peak power per channel	250 W
Signal-to-Noise Ratio (SNR)	115 dB
Total Harmonic Distortion (THD)	0.005 %
XLR in	Yes
Purpose	Home
Product color	Black
Connectivity technology	Wired
AC input voltage	120 V
AC input frequency	50 - 60 Hz

Weight and Dimensions

Depth	558.8 mm
Width	444.5 mm
Height	239.7 mm
Weight	44300 g