McIntosh C2600 Service Manual

23 24
DIGITAL 751731 SCH 3 of 3
3
+3.3VD
4700µF
C80
470µF
C84
.1µF
C77
.1µF
C83
.1µF
C81
100µF
C82
.1µF
C74
.1µF
C72
1k
R89
.1µF
C71
.1µF
C86
100µF
C85
47.5
R91
680µH
L17
.1µF
C75
4
2
1
3
Vcc
GND
5
U28
470µF
C73
.1µF
C76
100µH
L16
TAB
4
VOUT
2
VIN
3
GND
1
U29
1k
R90
L18
2
1
3
4
INHVCC
OUT GND
100.0000
Y4
3.32k
R106
10µF
C91
47µF
C102
475
R116
47.5k
R113
2
3
1
8 4
B+
B-
U32:1
6
5
7
U32:2
1000pF
C90
+15VDA
-15VDA
1000pF
C89
.0047µF
C104
330pF
C95
1.5k
R100
3
1
2
Q3
4.75k
R118
3
1
2
Q2
4.75k
R117
3
1
2
Q1
1000pF
C87
-15VDA
+15VDA
1000pF
C88
330pF
C97
221
R93
330pF
C94
330pF
C98
2
3
1
84
B+
B-
U31:1
6
5
7
U31:2
8.25k
R111
10µF
C96
4
2
1
3
Vcc
GND
5
U33
+15VDA -15VDA
-15VDA
100k
R115
221
R92
221
R94
221
R95
-15VDA
+15VDA
2
3
1
84
B+
B-
U35:1
1.5k
R99
3.32k
R105
1.5k
R102
6
5
7
U35:2
.0022µF
C93
1.5k
R97
1.5k
R98
.0022µF
C92
3.32k
R103
3.32k
R104
1.5k
R109
1.5k
R101
1.5k
R108
47µF
C101
475
R114
47.5k
R112
.0047µF
C103
.1µF
C99
+15VDA
.1µF
C100
-15VDA
.1µF
C105
.1µF
C106
+15V -15V
10
R96
10
R107
+3.3VD
+3.3VD
+3.3VD
+3.3VD
+3.3VD
+3.3VD
+1.2VD
+3.3VA
AVCC_L
14
DVCC_T
48
SDA
16
DATA_CLK
46
SCL
17
DATA2
44
XI(MCLK)
19
DATA4
42
VDD
21
DATA6
40
GND
23
DATA8
38
DAC7
12
DAC5B
10
GND
8
AVCC_L
6
DAC3
4
DAC1B
2
VDD
25
DAC8B
27
DAC6
29
AVCC_R
31
DAC4
33
DAC2B
35
DAC7B
11
DAC5
9
RESET
7
GND
5
DAC3B
3
DAC1
1
VDD
13
GND
15
XO
18
DATA1
45
DATA3
43
VDD
47
GND
22
AVCC_R
24
DVCC_B
20
DATA7
39
GND
37
DATA5
41
DAC8
26
DAC6B
28
AUTOMUTE
30
GND
32
DAC4B
34
DAC2
36
U30
6-32
GP3
6-32
GP4
.1µF
C79
.1µF
C78
+3.3VD
+3.3VD
I2C CL
I2C DA
RESET
AUTOMUTE
47.5
R85
47.5
R86
47.5
R84
47.5
R83
47.5
R87
47.5
R88
1
0 UNMUTED
MUTED
J8:11
J8:10
AUDIO
DAC LDAC R
I2SBCLK / DSDBCLK
I2SLRCK / DSDL
I2SDATA / DSDR
I2SDATA / DSDL
DSDR
DSDL
1
0 RESET
RUN
J8:2
J8:5
+15V
-15V
2
3
1
84
B+
B-
U34:1
-15VDA
+15VDA
6
5
7
U34:2
-15VDA
+15VDA
J8:3
J8:12
J8:6
J8:7
J8:8
MUTE
33.2k
R110
DS11
+3.3VD
-15VDA
-15VDA
J8:1
4
4
4
4
4

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®)