McIntosh C2600 Service Manual

C2600
9 10
CONTROL 751898 SCH 1 of 4
2
AD REF
EXT TXD
EXT RXD
NRST
PASS PC
TCK
TDI
TDO
TMS
VOL A
VOL B
USB1 -
USB1 +
IR CTRL
DAC TXD
DAC RXD
WP
7
SC L
6
VC C
8
SD A
5
A1
2
A2
3
A0
1
GND
4
U20
CONV IR
INP A
FR IR
INP B
REAR IR
HP DET
.1µF
C49
.1µF
C46
S1
AC DET
I2C CL
I2C DA
PASS LT
+5V
4
2
1
3
5
Vc c
GND
U11
4
2
1
3 5
Vc c
GND
U12
4
2
1
3 5
Vc c
GND
U10
+3.3V BU
+3.3V BU
+1.2V M
+1.2V M
+1.2V M
+3.3V M
+3.3V M
+3.3V M
+3.3V M
+3.3V M +3.3V M
+3.3V M
E RA S E
ERASE
RE S E T
VOL CS
VOL CL
+5V
AUDIO
PB DET
AUD DET
S2
J10:1
J10:3
J10:12
J10:9
DAC TXD
DAC RXD
+3.3V BU
+3.3V
EXT TXD
EXT RXD
NRST
TCK
TDI
TDO
TMS
USB1 -
USB1 +
+3.3V BU
J9:8
J9:7
J8:2
J8:1
SDAA
3
GND
4
SDAB
6
EN
5
VCC(A)
1
VCC(B)
8
SCLA
2
SCLB
7
U19
+3.3V BU
+3.3V BU
+3.3V BU
-15V
+15V
+5V
L8
.1µF
C48
.1µF
C44
.1µF
C47
.1µF
C43
.1µF
C36
10
R26
4.7µF
C34
AD REF
VOL B
VOL A
SDAA
3
GND
4
SDAB
6
EN
5
VCC (A)
1
VCC(B)
8
SCLA
2
SCLB
7
U9
INP A
INP B
HP DET
J6:15
PB DET
FR IR
+3.3V BU+3.3V BU
+3.3V BU
+5V D
I2C CL
I2C DA
.1µF
C50
Q 3
7
VSS
8
Q 1
5
A1
2
A2
3
Q 4
9
Q 5
10
Q 7
12
SDA
15
SCL
14
Q 2
6
A0
1
Q 0
4
Q 6
11
VDD
16
N C
13
U15
22.1k
R36
22.1k
R33
22.1k
R39
22.1k
R47
22.1
R55
22.1
R38
22.1
R35
22.1
R32
+3.3V BU
+3.3V BU +3.3V BU
I2C CL
I2C DA
.1µF
C35
4.7µF
C37
.1µF
C45
22.1
R28
22.1
R29
22.1
R27
4
2
1
3 5
Vc c
GND
U16
.1µF
C51
4
2
1
3
5
Vc c
GND
U17
22.1
R51
22.1
R52
12pF
C42
12pF
C41
1k
R34
12.00MHz
Y1
22.1
R30
22.1
R31
J10:6
J10:7
J10:4
J10:5
J10:18
J10:2
USB1 +
USB1 -
PS ON
+3.3V BU
DIGITAL
J9:17
J9:18
+3.3V BU
+3.3V BU+3.3V BU +3.3V BU
USB 1/2
USB OE
USB RST
A = 0 1 0 (2)
6
4
2
3
5
1
7 8
9 10
11 12
13 14
15 16
USB - USB +
TCK
TMS
TDO
TDI
RXD
TXD
TST
GND
GND
NRST
+3.3V
GND
GND
GND
J7
ERASE
+3.3V M
3
1
2
Q3
10k
R44
4
2
1
3
Vc c
GND
5
U14
FP RST
PW R
47.5k
R37
+3.3V M
PWR RLY
4
2
1
3
Vc c
GND
5
U23
3
1
2
Q4
2.21k
R48
.1µF
C53
+3.3V BU
+3.3V BU
PA20/PGMD8/AD3
16
PA19/PGMD7/AD2
13
PA22/PGMD10/AD9
14
PA21/PGMD9/AD8
11
VDDOUT
8
PA17/PGMD5/AD0
9
PB3/AD7
6
PB0/AD4
3
PB1/AD5
4
ADVREF
1
VDDPLL
64
XOUT/PB8
61
XIN/PGMCK/PB9
62
PB13/DAC0
59
DDM/PB10
56
DDP/PB11
57
VDDCORE
54
TMS/SWDIO/PB6
51
PA31
52
TDO/TRACESW O/PB5
49
TDI/PB4
33
PA4/PGMNCMD
36
PA5/PGMRDY
35
PA28
38
PA29
41
TST
40
PA3
43
GND
46
VDDIO
45
PA0/PGMEN0
48
PA23/PGMD11
15
VDDIN
7
PB2/AD6
5
VDDCORE
12
PA18/PGMD6/AD1
10
GND
2
GND
17
PA15/PGMD3
20
PA16/PGMD4
19
PA13/PGMD1
22
PA25/PGMD13
25
VDDCORE
24
PA12/PGMD0
27
PA9/PGMM1
30
PA10/PGMM2
29
P
A7/XIN32/PGMNVALID
32
PA6/PGMNOE
34
PA27/PGMD15
37
NRST
39
PA30
42
PA2/PGMEN2
44
PA1/PGMEN1
47
PB14/DAC1
63
VDDIO
58
TCK/SWCLK/PB7
53
GND
60
ERASE/PB12
55
JTAGSEL
50
VDDIO
18
PA24/PGMD12
23
PA11/PGMM3
28
PA14/PGMD2
21
PA26/PGMD14
26
P
A8/XOUT32/PGMM0
31
U13
VF D CL
VF D DA
VF D CS
I2C CL 1
I2C DA 1
I2C CL 2
I2C DA 2
J10:13 J10:14
J10:15
J10:16
J10:10
RS232 SD
+1.2V M
.1µF
C39
+1.2V M
.1µF
C40
J6:2
J6:14
J6:1
J6:7
J6:8
J6:9
J6:13
J6:12
J6:3
J6:6
J6:5
J6:4
J6:16
.1µF
C52
.1µF
C38
J9:14
J9:15
+3.3V M
J8:6
J9:9
J9:10
J9:2
J9:1
J9:11
J6:10
J6:11
J6:17
J6:18
J6:19
J6:20
J6:21
J6:22
J6:23
+3.3V BU
+3.3V BU
AUD DET
22.1k
R46
22.1
R56
VFD ON
+3.3V BU
AU D DET
+15V
-15V
+3. 3VBU
I2C CL 2
VOL CS
GN D
+5V
GN D
VOL CL
I2C DA 2
4
2
1
3 5
Vc c
GND
U21
22.1
R54
J9:12
TON E CS
TON E CS
J8:3
J8:7 J8:8
J8:10
J8:11
J8:12
J9:3
J9:4
J9:5
J9:6
J9:16
M ET ENA
VOL DA
4
2
1
3 5
Vc c
GND
U18
22.1
R53
J9:13
VOL DA
+3.3V BU
4
2
1
3
Vc c
GND
5
U22
J8:4
4.75k
R24
+3.3V BU +3.3V BU
4.75k
R25
+3.3V BU +3.3V BU
4.75k
R49
4.75k
R50
4.75k
R42
4.75k
R43
+3.3V BU
MET ENA
22.1k
R45
+3.3V BU
+3.3V BU
AUDIO
DISPLAY
MET EN A
+3. 3VBU
USB 1/2
DAC TXD
USB RST
GN D
USB1 -
USB OE
USB1 +
DAC RXD
+3. 3V
+3. 3VBU
PB DET
VOL B
PW R
FP RST
AD REF
HP DET
FR IR
VOL A
+5VD
VF D CL
VF D CS
I2C CL 1
INP A
VF D DA
INP B
GN D
I2C DA 1
+3.3V BU
22.1
R124
4
2
1
3
Vc c
GND
5
U36
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
3
3
+5V D
+5V
J10:17
J10:8
J10:11
22.1k
R160
+3.3V BU

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®)