McIntosh C2600 Service Manual

11 12
CONTROL 751898 SCH 2 of 4
2
L30
10
R122
1
3
2
J17:1
D34
L20
PASSTHRU
10
R123
4
6
5
J17:2
D35
L22
10
R118
D30
L24
10
R119
D31
L28
10
R121
D33
POWER
CONTROL
MAIN PC
TRG1 PC
TRG2 PC
TRG4 PC
3
1
2
Q30
22.1k
R112
MAIN PC
TRG4 PC
Q3
7
VSS
8
Q1
5
A1
2
A2
3
Q4
9
Q5
10
Q7
12
SD A
15
SC L
14
Q2
6
A0
1
Q0
4
Q6
11
VD D
16
NC
13
U28
22.1k
R77
TRG2 PC
TRG1 PC
TRG3 PC
.1µF
C58
150
R117
3
1
2
Q26
22.1k
R108
150
R113
3
1
2
Q27
22.1k
R109
150
R114
3
1
2
Q29
22.1k
R111
150
R116
L31
L21
L23
L25
L29
4
2
1
3
Vc c
GND
5
U33
D28
D29
D24
D25
D27
L10
10
R57
1
3
2
J11:1
D13
L11
10
R58
4
6
5
J11:2
D14
L14
10
R61
D17
L15
10
R62
D18
3
1
2
Q9
22.1k
R74
100
R67
3
1
2
Q10
22.1k
R75
100
R68
3
1
2
Q6
22.1k
R71
100
R64
100
R63
47.5k
R76
1.5k
R69
475k
R78
100pF
C61
1
3
2
J14:1
D20
IR IN
4
6
5
J14:2
D19
.1µF
C57
.1µF
C56
L19
.1µF
C60
L18
.1µF
C54
.1µF
C59
T2out
8
R2in
9
C2-
6
T2in
11
V+
3
R1in
14
EN
1
GND
16
C1+
2
C1-
4
C2+
5
V-
7
R2out
10
T1in
12
R1out
13
T1out
15
Vcc
17
SD
18
U26
RS232 SD
L16
L17
EXT TXD
EXT RXD
L9
D21
TO EXT DB9 - 2 (R XD )
TIP
RING
GN D
FROM EXT DB9 - 3 (T XD )
EXT DB9 - 5 (GN D )
RS 232
Q3
7
VSS
8
Q1
5
A1
2
A2
3
Q4
9
Q5
10
Q7
12
SDA
15
SCL
14
Q2
6
A0
1
Q0
4
Q6
11
VDD
16
NC
13
U27
I2C CL
I2C DA
.1µF
C62
TRIG 1
1
3
2
J16:1
L27
10
R120
D32
TRG3 PC
3
1
2
Q28
22.1k
R110
150
R115
L26
D26
TRIG 2
4
6
5
J16:2
1
3
2
J15:1
4
6
5
J15:2
M A IN
+3.3VBU
+3.3VBU
+3.3VBU
+3.3VBU
L12
10
R59
1
3
2
J12:1
D15
L13
10
R60
4
6
5
J12:2
D16
3
1
2
Q8
22.1k
R73
100
R66
100
R65
3
1
2
Q7
22.1k
R72
1
3
2
J13:1
4
6
5
J13:2
DATA 1
CONV IR FR IR
REAR IR
4
2
1
3
Vc c
GND
5
U31
4
2
1
3
Vc c
GND
5
U25
4
2
1
3 5
Vc c
GND
U30
IR CTR L
+3.3VBU
+3.3VBU
+3.3VBU
DAT A OU T
I2C CL
I2C DA
+3.3VBU
+3.3VBU
A = 0 0 0 (0)
A = 0 0 1 (1)
DATA
PORTS
.1µF
C63
.1µF
C69
D22
3
4
6
5
1
2
U24
CLR
3
GND
4
Cex t
6
Q
5
A
1
VC C
8
B
2
R/Cex t
7
U29
4
2
1
3
Vc c
GND
5
U32
+3.3VBU
+3.3VBU+3.3VBU+3.3VBU +3.3VBU+3.3VBU
3
1
2
Q5
22.1k
R70
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
PASS PC
22.1k
R101
D23
+3.3V BU
22.1k
R99
.01µF
C68
+3.3V BU
4
2
1
3
Vc c
GND
5
U35
PASS LT
+3.3V BU
47.5k
R100
22.1k
R102
+3.3V BU
TRIG 3
T RIG 4
.1µF
C55
+3.3VBU
4
2
1
3
Vcc
GND
5
U34
3
1
2
Q11
22.1
R103
2.21k
R84
22.1k
R79
3.32k
R85
4.75k
R94
+V PC
+V PC
+V PC
.1µF
C64
3
1
2
Q12
2.21k
R86
22.1k
R80
3.32k
R87
+V PC
+V PC
+V PC
.1µF
C65
3
1
2
Q13
2.21k
R88
22.1k
R81
3.32k
R89
+V PC
+V PC
.1µF
C66
3
1
2
Q14
2.21k
R90
22.1k
R82
3.32k
R91
+V PC
+V PC
.1µF
C67
3
1
2
Q15
2.21k
R92
22.1k
R83
3.32k
R93
+V PC
+V PC
+V PC
+V PC
+V PC
+3.3VBU
+3.3VBU
MET PC
3
1
2
Q16
3
1
2
Q17
3
1
2
Q18
3
1
2
Q19
3
1
2
Q20
3
1
2
Q21
3
1
2
Q22
3
1
2
Q23
3
1
2
Q24
3
1
2
Q25
4.75k
R95
4.75k
R96
4.75k
R97
4.75k
R98
22.1
R104
22.1
R105
22.1
R106
22.1
R107
MET PC
1
2
3
4
5
6
EXTERNAL
CONTROL
TUBE RED
TUBE GRN

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®)