McIntosh C2600 Service Manual

31 32
AUDIO 751899 SCH 3 of 6
4
100k
R152
100k
R148
10µF
C142
.1µF
C141
.1µF
C140
100µF
C147
.47µF
C154
.1µF
C157
10µF
C138
10µF
C136
100µF
C146
.47µF
C153
1k
R158
1k
R157
J15:4
J15:5
J15:3
J15:7
J15:11
J15:12
+5V
.1µF
C156
I2C
C
L 2
I2C DA 2
+3.3V BU
C O NTR O L
J15:1
J15:2
J15:9
+5V
+15V
-15V
+15V -15V
221k
R166
221k
R165
L INP
R INP
L OUT
+15V
-15V
VOLUM E C ONTROL
2
3
1
8 4
B+
B-
U18:1
6
5
7
U18:2
3
2
1
84
B+
B-
U17:1
5
6
7
U17:2
-15V
+15V
10kR159
OPEN
C149
OPEN
C148
J18:9
J18:8
J18:5
J18:4
J18:3
J18:7
10k
R156
.1µF
C139
D ISPLA Y
+15V
-15V
4.75k
R147
4.75k
R149
.47µF
C135
D25
D26
2.21M
R150
3.32k
R151
3.32k
R155
3
1
2
Q37
2
3
1
8 4
B+
B-
U14:1
6
5
7
U14:2
.47µF
C143
AU DIO DET EC TOR
.1µF
C144
.1µF
C145
+15V -15V
100pF
C137
+3.3V BU
4
2
1
3
Vc c
GN D
5
U15
+3.3V BU
100k
R160
3.32k
R153
J18:10
J18:12
J17:18
J17:17
J17:2
J17:14
J17:10
J17:8
J17:7
+5V
A G N D
R OUT
OUT 1
OUT 2
MAIN
+15V
-15V
OU T P U T
VOL CS
VOL CL
VOL DA
D R EF
21
V+
22
V+
24
V-
25
InL
26
V-
27
D C AP
28
AD R2
29
AD R1
30
AD R0
31
Z/C
32
Z/C REF L
1
L R EF
2
L+
3
L R EF
4
L-
5
L R EF
6
Out L
7
DCCAP L
8
DCCAP R
9
Out R
10
R R EF
11
R-
12
R R EF
13
R+
14
R R EF
15
Z/C REF R
16
D VD D
17
DAT A
18
CLOC K
19
LAT C H
20
InR
23
U16
J15:6
AU D DET
J18:2
J18:1
J15:10
L M ET
R M ET
R H D PH
L H D PH
J18:6
AU D DET
+3. 3VBU
I2C CL 2
VOL CS
+5V
GND
VOL DA
VOL CL
I2C DA 2
-15V+15V
J18:11
A G N D
GND
J15:8
MET EN A
MET ENA
3.32k
R154
J17:16
J17:1J17:3
J17:13
J17:11
J17:9
J17:6
J17:5
J15:13
J15:14 J15:15
J15:16
J15:17
J15:18
+15V
-15V
J16:1J16:2
J16:3
J16:5J16:6
J16:7
J16:10J16:11
J16:12
C O NTR O L
J16:9
2
2
2
2
2
2
2
2
2
2
2
2
2
2
5
5
5
5
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
12
10µF
C207
-7.5V
10µFC202
-7.5V
1µFC203 1µFC209
-7.5V
+7.5V
100µFC205
-7.5V
.22µFC208.22µFC204
10µF
C211
10µF
C214
3.92k
R271
3.92k
R276
TONE CONTROL
1k
R273
1k
R272
220pF
C206
.1µF
C213
.1µF
C212
NC
21
NC
22
Ba1B
24
Mi2B
25
Mi1B
26
Tr1B
27
GN D
28
Out B
29
SW CB
30
GN D
31
InB
32
InA
1
GN D
2
SW CA
3
Out A
4
GN D
5
Tr1A
6
Mi1A
7
Mi2A
8
Ba1A
9
Ba2A
10
NC
11
GN D
12
VD Dout
13
DAT A
14
CLOC K
15
LAT C H
16
AD R0
17
AD R1
18
V-
19
V+
20
Ba2B
23
U26
L VOL R VOL
L TONE R TONE
D60 D61
332
R270
D62 D63
332
R275
4.75k
R269
D59
+7.5V
4.75k
R274
D64
-7.5V
.0022µFC201
.0022µF
C210
L VOL
R VOL
TON E CS
TONE CS
GND
GN D
GN D
L HDPH
R HDPH
L MET
R MET
T U B E P C B
+ 6 d B
L TONE
R TONE
GND
x
x
x
x
J27:4
J27:3
J27:2
J27:1
J27:5
J27:6
J27:9
J27:10
J27:7
J27:8
J27:12
J27:11
+15V
-15V
No Pop
No Pop
NC
NC
22.1R277

McIntosh C2600 Specifications

General

Signal to Noise Ratio	100dB
Phono Stage	Yes
Digital USB Input	1
Digital MCT Input	1
Vacuum Tube	Yes
Type	Tube Preamplifier
Frequency Response	20Hz - 20kHz (+0, -0.5dB)
Phono Inputs	1 Moving Magnet 1 Moving Coil
Outputs	3 Total
Output Impedance	100 ohms
Dimensions	17.5" (44.45cm) x 6" (15.24cm) x 18" (45.72cm)
Headphone Output	1/4" High Drive with Headphone Crossfeed Director (HXD®)