McIntosh C2600 Service Manual

43 44
DISPLAY/L-PSHBTN/R-PSHBTN/HDPHN/L-MTR/R-MTR 751900 SCH 2 of 2
5
6 7 8 9 10
150
R2
10µF
C1
Vs
2
OUT
1
GND
3
IR1
.1µF
C2
22.1
R1
6
5
7
U3:2
2
3
1
84
B+
B-
U3:1
10µF
C6
.1µF
C7
4.75k
R3
.1µ F
C3
MU T E
TON E
OUTPUT 1
OUTPUT 2
.1µF
C4
22.1
R5
22.1
R4
22.1
R6
A B
C
SS
GNDGND
1 2 3
6
7
4
5
S2
AD REF
+5V D
+3.3V BU
S6
S5
S7
S4
S3
NO HD PH JACK
HDPH PLU GGED IN
NO HD PH PLU GGED IN
INP UT
STANDBY/ ON
150
R8
10µF
C5
475k
R7
D1
4
2
1
3
Vcc
GND
5
U4
4
2
1
3
Vcc
GN D
5
U2
+3.3V BU
+3.3V BU
221
R9
+3.3V BU
+5K B
+5K B
3.3V
1.65V
0V
.1µF
C8
+3.3V BU
J4:1
J6:1
J5:8
J5:1J3:8
J5:6
J5:3
J5:4
J5:5
J4:7
J4:4
J4:6
J4:8
J4:3
J4:5
J6:3
J6:4
J6:5
J6:6
J6:8
J6:2
J3:6
J3:3
J3:4
J3:5
J3:1
J2:4
J2:3
J2:2 J2:1
+5V D
+3.3V BU
+5V D
AD REF
J1:1
IN P A
IN P B
VFD CS
VFD DA
VFD CL
C H B V c c C H A G N D
S H AF T
S1
VOL A
VOL B
PWR
FR IR
PB DET
HP DET
V OLUME
J1:2
J1:3
J1:4
J1:5 J1:6
J1:7 J1:8
J1:9
J1:10
J1:11
J1:12
J1:13
J1:14
J1:15
J1:16
J1:17
J1:18
J1:19
J1:20
J1:21
J1:22
J1:23
STBY
6-32
GP1
2
3
1
4
5
7
8
9
6
J8
4-40
GP2
4-40
GP3
J7:1
4-40
GP5
4-40
GP4
1000pF
C9
1000pF
C10
J7:2
J7:3
J7:4 J7:5
J7:6
J7:7
J7:8
FP RST
I2C DA 1
I2C CL 1
+3. 3VBU
PB DET
VOL B
PW R
FP R ST
AD REF
HP DET
FR IR
VOL A
+5VD
VF D CL
VF D CS
I2C CL 1
IN P A
VF D DA
IN P B
GND
I2C DA 1
5
5
5
5
5
5
6
6
6
7
7
7
57
11 1111
4.75k
R15
HDPH
TRIM
C O N T R O L
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3.32k
R12
1.21k
R11
AD REF
6.81k
R13
4.75k
R10
18.2k
R14
MU T E
TON E
OUT 1
OUT 2
3.3V1.94V
NO PUSHTONE
1.36V
OUT 1
2.62V
MU T E
0.67V
OUT 2
0V
TRIM
DISPLAY
5
HEADPHONE
8
L PUSHBUTTON
6
7
TRIM
J21:1
J21:2
J21:3
J21:4
J21:5
J21:6
J21:7
J21:8
1111
11
L
R
GN D
J18:4
J18:8
J18:5
J18:9
J18:10
J18:7
J18:3
J18:1
J18:11
J18:12
L M ET
R M ET
R H D PH
L H D PH
J18:6
J18:2
GND
11
11
11
11
11
11
11
11
11
11
11
11
GND
GND
GND
L HDPH
R HDPH
L MET
R MET
L M ET E R
J19:1
1
L M ET
1
GND
R M ET
GND
J19:2
J20:1
J20:2
R M ETER
1
1
NC
NC
NC
NC
L
R
Tip-L
Ring-R
R PUSHBUTTON

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®)