McIntosh C45 Service Manual page 22

PUSHBUTTON
7
749855 SCH and PCB
STANDBY/ON MUTE
S1 S2
TRIM
TRIM
LEVEL
LEVEL
S5 S6
TUNE
TUNE
R HDPH 0V
J1:3
J13:1 2C
J2
L HDPH 0V
J1:1 3
J13:3 2C
HDPH 2 HEADPHONES
0V
GND J1:2
1
2C
J13:2
41
5V R0
J3:5
3
R0
J3:6
3
5V R1
J3:8
3
5V R2
J3:10
3
SET UP TRIM
0V R3
J3:12
S3 S4 3
0V C0
J3:11
3
5V C1
J3:1
3
TONE BYPASS
MODE 5V 5V
J3:2
3
S7 S8 FRONT
5V J3:4 PANEL IR
3
FRONT
PANEL IR
ENTER J3:3
3
0V GND
J3:9
3
GND
J3:7
3
IR SENSOR
MT1
1 2 3
5V 5V
J2:8
J2:7
J2:5
J2:3
J2:1
J2:2
J2:12
J2:11
J2:9
J2:10
J2:4
J2:6
42