McIntosh C2300 Service Manual

11 12
MAIN 750761 SCH 2 OF 6
2B
4A
4A
4A
4A
4A
4A
4A
4A
4A
4A
4A
3A
3A
3A
3A
3A
5V
DVD
NC
GND
GND
GND
GND
LEFT-
R
L
R
L
R
L
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
LEFT
0V
0V
0V
0V
5V
0V
0V
0V
0V
0V
0V
5V
0V
0V
0V
R
L
SERVER (REC)
GND
GND
MM
MC
MC
-24v
-24v
NC
24v
24v
3B
3B
3B
3A
3A
3B
3C
3C
3A
3A
3A
3A
3A
J4:6
J4:9
J4:10
J3:1
J3:2
J3:4
J3:5
J3:6
J3:7
J3:9
J3:10
J3:11
J3:12
4A
4A
4A
4A
4A
4A
4A
3A
3A
3A
CD
AUX
CDR
GND
GND
GND
GND
100k
R11
L
L
R
0V
0V
20K
R35
0V
0V
5V
0V
0V
MAIN
MM
MAIN
NC
3B
3B
3A
J4:8
J3:3
J3:8
100k
R12
CONTROL
J9:1
CONTROL
J9:2
CONTROL
J9:3
J9:4
CONTROL
J9:5
RIGHT-
J9:11
J9:12
J9:13
J9:14
J9:15
LEFT-
LEFT+
J9:18
R MM OUT
J4:2
J4:1
J2:1
J1:2
J1:1
5V
5V
5V
5V
5V
0V
0V
0V
0V
0V
0V
0V
0V
10k
R13
MM
4
3
CDR
L
1
R
DVD
2
L
TUNER
100pF
C24
20K
R40
100pF
C26
0V
5V
5V
INPUT
DRIVER
CONVERTER
0V
5V
DECODER
DECODER
INPUT
DECODER
DECODER
0V
OUTPUTS
R MC OUT
L MC OUT
TUBE ON
TUBE ON
TUBE ON
TUBE ON
TUBE ON
J9:6
RIGHT-
J9:10
J9:9
J9:8
J9:7
RIGHT+
RIGHT+
LEFT+
J9:17
J9:16
J4:3
J4:4
L MM OUT
J2:2
R MM IN
L MM IN
0V
0V
0V
0V
100k
R2
220pF
C1
47pF
C2
3
2 1
Q1
47pF
C4
3
21
Q4
100k
R3
220pF
C3
10k
R8
100k
R10
47.5k
R18
1k
R20
47.5k
R17
1k
R19
0V
2
J6:2
0V
INPUTS
INPUTS
R
1
J12:1
SRVR
1
J11:1
2
CD
R
1
J10:1
2
J10:2
AUX
2
J9:2
2
J8:2
1
2
J7:2
1
J7:1
220k
3 4
R22:2
220k
3
4
R21:2
220k
12
R22:1
10uF
C15
220k
12
R21:1
10uF
C13
220k
12
R24:1
10uF
C11
10uF
C12
220k
12
R26:1
10uF
C20
220k
3 4
R23:2
10uF
C10
220k
3 4
R25:2
10uF
C18
10uF
C17
2
1
3
4
K6
2
1
3
4
K5
2
1
3
4
K2
10uF
C22
10uF
C21
40.2k
R34
1k
R32
40.2k
R33
100pF
C23
40.2k
R31
1k
R29
100pF
C28
100pF
C25
20K
R39
5V
DRIVER
RIGHT
CONVERTER
0V
100k
R42
.1uF
C35
220pF
C36
221k
R49
221k
R48
0V
1
J13:1
10uF
C38
TUBE ON
100k
R4
3
2
1
Q2
100k
R1
3
2 1
Q3
100k
R9
10k
R14
1
J6:1
2
J12:2
2
J11:2
1
J8:1
1
J9:1
220k
3 4
R24:2
220k
3 4
R26:2
10uF
C14
10uF
C16
220k
12
R23:1
220k
12
R25:1
10uF
C9
10uF
C19
2
1
3
4
K1
2
1
3
4
K3
2
1
3
4
K4
2
1
3
4
K8
221k
R27
221k
R28
40.2k
R30
100pF
C27
6
7
8
9
1
2
3
4
514
15
16
17
18
10
11
12
13
GND
U1
6
7
8
9
1
2
3
4
514
15
16
17
18
10
11
12
13
GND
U2
.1uF
C30
.1uF
C29
100k
R41
2
1
3
5
4
K17
.1uF
C31
.1uF
C34
2
1
3
5
4
K18
10uF
C37
2
J13:2
10uF
C39
BALANCED TO UNBALANCED
BALANCED TO UNBALANCED
1k
R47
1k
R43
221
R50
J14:12
J14:8
J14:7
J14:3
J14:2
GP1
390pF
C5
100pF
C6
3
2 1
Q5
10k
R5
100pF
C8
3
21
Q8
390pF
C7
10k
R6
10k
R16
10k
R15
20K
R36
2
1
3
4
K14
2
1
3
4
K13
2
1
3
4
K10
22uF
C32
1k
R45
1k
R44
J2:5
J2:6
J2:7
J14:9
J14:10
J14:11
J14:5
J14:4
J14:6
J14:1
3
21
Q6
10k
R7
3
2 1
Q7
2
1
3
4
K9
2
1
3
4
K11
2
1
3
4
K12
2
1
3
4
K16
22uF
C33
1k
R46
QF
5
QG
6
QD
3
QA
15
QB
1
GND
8
QH
7
SQH
9
OE
13
VCC
16
QC
2
QE
4
LCLK
12
RESET
10
SCLK
11
DATA
14
U6
QF
5
QG
6
QD
3
QA
15
QB
1
GND
8
QH
7
SQH
9
OE
13
VCC
16
QC
2
QE
4
LCLK
12
RESET
10
SCLK
11
DATA
14
U4
221
R51
J2:8
QF
5
QG
6
QD
3
QA
15
QB
1
GND
8
QH
7
SQH
9
OE
13
VCC
16
QC
2
QE
4
LCLK
12
RESET
10
SCLK
11
DATA
14
U5
QF
5
QG
6
QD
3
QA
15
QB
1
GND
8
QH
7
SQH
9
OE
13
VCC
16
QC
2
QE
4
LCLK
12
RESET
10
SCLK
11
DATA
14
U7
J5:18
J5:17
J5:7
J5:6
J5:14
J5:15
J5:16
J5:9
J5:10
J5:11
J5:12
J5:5
J5:1
J5:3
J5:2
J2:12
J2:10
J2:11
J2:9
J4:2
J4:1
J3:2
2
3
1
-
+
8 4
B+
B-
U3:1
J5:13
J5:4
J5:8
J3:1
6
5
7
-
+
U3:2
595CS
ACC_ON
D/A_CONTROL
CD_CONTROL
CDR_CONTROL
DVD_CONTROL
L_MC
L_MM
LEFT-
LEFT-
LEFT+
LEFT+
MC_CONTROL
MC_CONTROL
MM_CONTROL
MM_CONTROL
PC_SPKR1
PC_SPKR2
POWERON
R_MC
R_MM
RIGHT-
RIGHT-
RIGHT+
RIGHT+
SCLK
SCLK
SCLK
SCLK
SDATA
SQH1
TU_CONTROL
TUBE_LIGHT
TUBE_LIGHT
-15V
-15V
-15V
-15V
-15V -15V
-15V
-15V
-15V15V
5V
5V
5V
5V
5V
5V
5V 5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
-24V
24V
LISAUD-L
LISAUD-R
MONO
MUTE
SPKR1
SPKR2
MC1
MC2
MC3
MC4
MM1
MM2
MM3
MM4
L_MM
R_MM
METER_MUTE
5V
5V
5V
5V
L_MC
R_MC
15V
-15V
MM3 MM4
MM1 MM2
MM3 MM4
MM1 MM2
10uF
C161
5V
100k
R238
220pF
C162
1k
R239
595CS
HDPH MUTE
5V
5V
5V
TO J33 PIN3
Ext_Lamp_Control
TO BALANCED (INPUT)
TO TUBE
TO TUBE (MC)
TO TUBE
TO TUBE
0V
0V
0V
0V
0V
0V
0V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
0V
0V
0V
5V
5V
0V
5V
5V

McIntosh C2300 Specifications

General

Output level	45 mV
Amplifier class	-
Frequency range	10 - 100000 Hz
Input sensitivity	4.5 mV
Audio output channels	2.0 channels
Peak power per channel	- W
Signal-to-Noise Ratio (SNR)	93 dB
Total Harmonic Distortion (THD)	0.08 %
XLR in	Yes
XLR out	3
Headphone outputs	1
Line inputs (RCA)	6
Line outputs (RCA)	4
Headphone connectivity	6.3 mm
Speakers connectivity type	RCA
Purpose	Home
Product color	Black
Volume control	Rotary
Connectivity technology	Wired
AC input voltage	120 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	75 W
Package weight	20410 g

Weight and Dimensions

Depth	457.2 mm
Width	444.5 mm
Height	193.7 mm
Weight	13.41 g