McIntosh MA2275

35 36
POWER SUPPLY 049972
9
11
11
11
11
11
1
1
1
1
1
1
1
1L1
1L1
1
1
RED
14V
-15V
15V
-15V
15V
2
2
2
2
2
2
8L
8L
8L
8L
11
1
1
RED
-24V
24V
2
2
2
8L
8L
J11:6
J11:5
J11:3
J11:2
J11:1
T1
T1
T1
T1
T1
T1
T2L
T2R
GND
GND
5V
D5
24V
300V
100k
R5
TURN/ON
-15V
15V
-24V
300V
FIL_B
AMP_MUTE
-400V
FIL_B
FIL_A
-400V
J5:9
J5:7
14V
J5:6
J5:5
FIL B
J5:4
FILGND
FIL A
J5:1
GND
8R
FIL B
J7:6
8R J7:5
FILGND
FIL B
8R J7:2
TURN ON
8R
-400V
J7:1
J7:6
J7:5
FILGND
J7:4
FIL A
TURN ON
J7:1
J11:4
T1
T1
5V
.047uF
C13
47uF
C6
2.2k 2w
R10
2
34
1
AC
AC
D1
-24V
4700uF
C14
47uF
C7
-400V
680uF
C4
680uF
C3
10uF
C15
47uF
C5
D3 D2
100k 2w
R2
18k
R1
1uF
C8
100k
R6
3
1
2
G
D
S
Q6
AMP_MUTE
100k
R9
14V
24V
FIL_A
TURN/ON
J5:8
J5:3
TO MAIN
-15V
15V
J5:2
300V
8R
8R
TO R AMP
J7:4
J7:3
FIL B
J7:2
J7:3
-400V
TO BACKUP PS
4700uF
C11
680uF
C9
680uF
C10
10uF
C12
D10
3
1
2
Q2
221k
R8
TO L AMP
TO POWER TRANSFORMER
J11:1
POWER ON
POWERON
J11:5
J11:6
BLK
J14
BLU
D9
BLU/BLK
BLU J8
GRN
GRN/BLK
J6
FIL_A
BLU
J1
RED J12
RED
J13
-24V
POWER ON
POWERON
J18:6
J18:5
J17:6
J17:1
J16:5
J11:3
J11:2
POWER ON
F2
2A
J10
D8
3
1
2
IN OUT
U3
F1
2A
J7
D6
2
31
IN OUT
U2
FIL_B
GRN
J5
D4
RED
J4
J3
.047uF
C2
J2
1M
R7
-15V
2
3
1
Q1
J18:8
J18:9
J18:4
J18:3
J18:2
J18:1
AMP MUTE
J17:5
J17:2
J17:3
J17:4
J16:6
AMP MUTE
J16:1
J16:2
J16:3
TURN/ON
AMP_MUTE
1
GP1
J9
J11:4
D7
1
3
2
Q3
2.74M
R4
J18:7
J16:4
15V REGULATOR
-15V REGULATOR
300V REGULATOR
100k 2w
R
75
100k 2w
R
76
POWER AMPLIFIER
TURN ON CONTROL
485V
485V
485V
490V
.47uF
C1