McIntosh C2300 - Meter and Circuitry; Power Supply Circuits

C2300
37 38
TUBE 750643 SCH 2 OF 3
5B
0V
GND
2B
2B
2B
221k
R34
.9V
221k
R33
GND
2B
TO MAIN
.1uF
C23
.1uF
C24
221k
R51
221k
R52
MC
TUBE ON
MC
RIGHT MC
J2:2 2A
2AJ2:5
GND
2AJ2:7
LEFT MC
2AJ2:1
0V
RIGHT
0V
110V
110V
1M
R44
120V
.8V
120V
121V
121V
R MC OUT
J2:6
J2:3
J2:8
TUBE ON
J2:10
J2:9 2B
2B
GND
5
9
4
V4C
47pF
C20
47.5k
R28
47pF
C19
47.5k
R27
.001uF
C26
1.82k
R31
.9V
1M
R38
3
2
1
V4A
.001uF
C25
1.82k
R29
1M
R37
3
2
1
V3A
.0033uF
C28
.8V
1.5k
R40
8
6
7
V4B
200k
R43
.0033uF
C27
1M
R42
1.5k
R39
8
6
7
V3B
200k
R41
1uF
C32
22.1k
R49
22.1k
R50
1uF
C31
22.1k
R47
22.1k
R48
J2:4
TO MAIN
L MC OUT
5
9
4
V3C
1k
R32
1k
R30
J4:10
J4:9
75k
R36
J4:7
J3:4
J3:3
J4:11
J4:12
10uF
C18
100k
R26
PHONO AMP
1uF
C34
75k
R35
1uF
C33
J4:8
J4:5
100uF
C22
100uF
C21
2 1
3
Q3
2 1
3
Q4
J4:6
236V
236V
236V
175V3
175V3 236V
236V
24V
175V3
24V
24V
220pF
C57
220pF
C58
RIGHT
MC PHONO AMP
0V
0V
12V
0V
LEFT
MC PHONO AMP
0V
0V
12AX7A
12AX7A
12AX7A
12AX7A