McIntosh C2600 Service Manual page 16

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4
AUDIO
751899 SCH 1 of 6
J13:2
L1
2
R
C66
R81
+7.5V
R87
D21
220pF
51.1
110
R85
4.75k
R83
R89
1k
1
1
Q3
Q7
M C
NetTie2
L2
1
L
J13:1
C67
R82
R88
D22
220pF
51.1
110
R84
R90
1k
1
1
Q4
Q8
J14:2
R79
L3
360
2
R
C68
-7.5V
C70
R77
47pF
100pF
D23
47.5k
R86
47.5k
1
1
Q1
Q5
M M
RMMG ND
RMMG ND
10k
2
Q200
MM 1
10k
+7.5V
R80
L4
360
1
L
J14:1
C69
C71
R78
47pF
100pF
D24
47.5k
1
1
Q2
Q6
NetTie1
-7.5V
27
27
R107
+7.5V
1000µF
+7.5V
R93
+7.5V
R99
+7.5V
R104
249
681
1k
R108
R91
R97
R103
-7.5V
4.75k
4.75k
4.75k
R95
R101
1000µF
1k
1k
1k
1
1
Q11
Q15
R109
+7.5V
R94
R100
R105
249
681
1k
R110
-7.5V
R96
R102
1k
1k
1k
1
1
Q12
Q16
J123:1
-7.5V
C72
C74
-7.5V
C76
C78
C80
C82
-7.5V
J123:2
100pF
100pF
100pF
100pF
100pF
100pF
R92
R98
R106
47.5k
47.5k
47.5k
1
1
Q9
Q13
RMMG ND
RMMG ND
10k
10k
10k
2
2
Q201
MM 2
Q202
MM 3
Q203
10k
10k
10k
+7.5V
+7.5V
+7.5V
J124:1
C73
C75
C77
C79
C81
C83
J124:2
100pF
100pF
100pF
100pF
100pF
100pF
1
1
Q10
Q14
-7.5V
-7.5V
-7.5V
R125
R111
2k
10
C88
C215
C92
1000µF
1000pF
1
1
1
1
1
Q17
Q21
Q25
Q29
Q33
Q18
Q22
Q26
Q30
Q34
1
1
1
1
1
C93
R126
R112
1000pF
2k
10
C89
1000µF
C216
R127
R113
2k
10
C217
C194
C94
1000µF
1000µF
1000pF
1
1
1
1
1
Q19
Q23
Q27
Q31
Q35
Q20
Q24
Q28
Q32
Q36
1
1
1
1
1
C95
R114
R128
1000pF
2k
10
C91
1000µF
1000µF
C218
M M
C104
1µF
J28:12
Jx:1
MM R
Jx:2
J28:11
R121
221k
J28:7
J28:8
2
MM 4
M M
C105
1µF
J28:9
Jx:1
MM L
J28:10
Jx:2
R122
221k
240
R129
C108
C110
4.75k
1000pF
1000pF
-7.5V
U7
2
M C
B-
6
Jx:1
x
B+
J32:1
3
Jx:2
x
J32:2
240
+7.5V
+7.5V
-7.5V
C127
C129
.1µF
.1µF
240
R130
C109
C111
4.75k
1000pF
1000pF
-7.5V
2
U8
M C
B-
6
Jx:1
B+
J122:1
3
Jx:2
J122:2
240
+7.5V
+7.5V
-7.5V
C128
C131
.1µF
.1µF
+15V
+7.5V
U9
3
2
IN
OUT(TAB)
C112
ADJ
R135
C117
C124
.1µF
475
100µF
.1µF
A GND
A GND
R131
R132
C115
4.75k
4.75k
10µF
+3.3V BU
U10
1
16
A0
VDD
2
15
A1
SDA
C116
3
14
A2
SCL
.1µF
4
13
M C 1
Q 0
N C
5
12
M C 2
Q 1
Q 7
6
11
M C 3
Q 2
Q 6
7
10
M C 4
Q 3
Q 5
8
9
VSS
Q 4
A = 1 1 1 (7)
28
28
C125
1µF
J28:4
Jx:1
MC IN
MC R
J28:3
Jx:2
GND
R141
221k
J28:5
J28:6
C126
1µF
J28:1
MC L
J28:2
R142
221k
-15V
-7.5V
U13
2
3
IN(TAB)
OUT
ADJ
R146
C134
475
100µF
R140
R143
C133
4.75k
4.75k
10µF
+3.3V BU
I2C DA 2
I2C CL 2
M M 4
M M 3
M M 2
M M 1

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