McIntosh MC1.2KW - Front Panel Displays and Controls; Meter and Power Switch Functions

19
20
METER POWER SUPPLY 750752 SCH 1 of 2
7
0V
0V
0V
0V
1.82k
R76
0V
D14
0V
1
2
T1
METER V+
1.82k
R75
0V
0V
CALIBRATION
D4
-.5V
DC AMP
METER -
0V
METER V-
22.1k
R73
1000uF
C1
10
R35
D7
D6
200k
R30
D1
10M
R8
100k
CCW
1
2
3
R1
METER
-.65V
RECTIFIER
.1uF
C22
D5
1uF
C12
D3
100
R10
.1uF
C23
2.74M
R12
HOLD
3
1
2
Q1
METER +
22.1k
R74
22.1k
R5
475k
R77
2
3
1
-
+
8
4
B+
B-
U3:1
LOG AMP
CURRENT
METER CURRENT
VOLTAGE
LOG AMP
.22uF
C15
J3:1
6
5
7
-
+
U3:2
D22
4.99k
R6
200k
R7
18.2k
R9
150k
R36
.1uF
C21
.1uF
C14
J3:2
1.1k
R4
3
1
2
Q9
3
21
Q8
D2
2
3
1
-
+
84
B+
B-
U2:1
6
5
7
-
+
U2:2
12.1k
R66
D18
324
R78
J1:2
J1:1
10V
10V
-6V
12V -12V
12V
12V
-12V
10V
-6V
-12V HOLD
4
4
J6-10
J6-11
0V
0V
1
1
MT1+
MT1-