McIntosh MA7000 Service Manual

MA7000
BACKUP POWER SUPPLY 751060 SCH and PCB
2
9 10
1
1
1
GRY
GRY/BLK
BLK
J15
J1
J2
.3A
t
R1
D3
D4
D2
D5
23
14
K2
1
1
1
WHT
WHT /VIO
VIO
J12
J14
J13
1
1
J10
J11
AC N
AC FUSE
100V
20V
100V
20V
1
J3
1
1
J4
J5
1
1
J9
J8
D1
J16:4
J16:1
3
POWER
RLY
POWER TRANSFORMER PRIMARY
3
TO MAIN
3
2 4 0V2 2 0V1 2 0V
2
6
8
4
1
3
5
7
PRIMARY
T1
2 3
1 4
K1
+VBU
GND
1 0 0V
1 2
t
RT1
1 2
t
RT2
J16:5
+VBU
+VBU
J7
1
3300pF
C1
J6
1
.3A
t
R2
1000uF
C2
J17:1
J17:2
[+] TP [-]
TEST ONLY
NO CO NNECTION

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