McIntosh C2300 - Meter Illumination and Phono Adjustments; Mono, Mute, and Tone Bypass; Recording and Setup Access

31 32
LEFT
LEFT
5V
5V
5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
5V
5V
0V
0V
0V
0V
1
1
2
2
5V
5V
MUTE
GND
GND
2C
2C
2C
2C
2C
2C
2C
2C
2C
2C
2C
2C
2C
2C
J20:1
J20:2
J20:3
J20:4
J20:5
J20:8
J20:9
LEFT
LEFT
5V
5V
0V
TO MAI N PCB
0V
0V
0V
0V
0V
0V
MUTE
2C
2C
2C
2C
J20:7
J20:6
TO MAI N PCB
CDR
CD
INPUTS
D/A
DVD
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
CONTROL
CONTROL
CDR
CONTROL
D/A
NC
DVD
GND
GND
RIGHT-
RIGHT-
RIGHT+
RIGHT+
LEFT+
J5:182B
J5:172B
J5:142B
J5:132B
J5:122B
J5:112B
J5:52B
J5:42B
J5:32B
J5:22B
J5:12B
LEFT
1
D6
OUTPUT
J20:10
RIGHT +
J20:11
RIGHT +
J20:12
J20:13
J20:14
LEFT -
J20:15
LEFT -
LEFT +
J20:18
0V
0V
0V
267k
R8
267k
R16
10uF
C15
267k
R7
267k
R15
10uF
C13
267k
R14
267k
R6
10uF
C11
267k
R13
267k
R5
10uF
C9
267k
R12
267k
R4
10uF
C7
267k
R11
267k
R3
10uF
C5
267k
R2
267k
R10
10uF
C3
267k
R9
267k
R1
10uF
C1
2
1
3
4
K7
2
1
3
4
K6
D4
D3
D2
D1
267k
R20
267k
R19
10uF
C18
10uF
C17
5V
CD
CONTROL
GND
GND
LEFT-
LEFT+
LEFT-
J5:15
J5:16
2B
2B
J5:102B
J5:6
J5:7
J5:8
J5:9
2B
2B
2B
2B
RIGHT
1
OUTPUT S
47uF
C31
47uF
C29
47uF
C28
47uF
C27
2
3
1
-
+
C
J13
47uF
C26
47uF
C24
47uF
C22
100k
R38
100k
R37
100k
R24
100k
R23
100k
R21
D5
2
1
3
4
K19
2
1
3
4
K18
2
1
3
4
K24
2
1
3
4
K23
2
1
3
4
K21
2
1
3
4
K26
D7
2
1
3
4
K25
OUTPUT
OUTPUT
OUTPUT
RIGHT -
RIGHT -
J20:17
J20:16
LEFT +
2
3
1
-
+
G
J8
2
3
1
-
+
G
J7
2
3
1
-
+
G
J3
2
3
1
-
+
G
J4
2
3
1
-
+
G
J5
2
3
1
-
+
G
J6
2
3
1
-
+
G
J1
2
3
1
-
+
G
J2
10uF
C16
10uF
C14
10uF
C10
10uF
C8
10uF
C6
10uF
C12
10uF
C4
10uF
C2
2
1
3
4
K8
2
1
3
4
K5
2
1
3
4
K4
2
1
3
4
K1
2
1
3
4
K2
2
1
3
4
K3
10uF
C20
10uF
C19
267k
R18
267k
R17
47uF
C32
2
3
1
-
+
C
J15
47uF
C30
47uF
C25
2
3
1
-
+
C
J14
2
3
1
-
+
C
J12
47uF
C23
47uF
C21
2
3
1
-
+
C
J10
100k
R44
100k
R43
100k
R42
100k
R41
100k
R39
2
1
3
4
K20
2
1
3
4
K17
2
1
3
4
K22
2
3
1
-
+
C
J11
RIGHT
RIGHT
2
MAIN
J9:1
J9:6
2
MAIN
J9:17
J9:18
J16:18
J16:17
J16:9
J16:8
J16:7
J16:6
RIGHT
RIGHT
2
1
3
4
K11
J9:4
J9:2
J9:3
J9:7
J9:8
J9:13
J9:12
J9:11
J9:10
J9:16
J9:15
221
R34
221
R26
221
R35
221
R25
221
R36
221
R27
221
R32
221
R31
221
R33
J16:16
J16:11
J16:13
J16:12
J16:14
J16:2
J16:3
J16:4
J16:5
2
1
3
4
K15
2
1
3
4
K16
2
1
3
4
K9
2
1
3
4
K14
2
1
3
4
K10
2
1
3
4
K13
2
1
3
4
K12
J9:5
J9:9
J9:14
221
R29
221
R30
221
R28
J16:10
J16:15
J16:1
DVD_CONTROL
DVD_CONTROL
D/A_CONTROL
D/A_CONTROL
CD_CONTROL
CD_CONTROL
CDR_CONTROL
CDR_CONTROL
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
BALANCED 750642 SCH 2 OF 2
4B