Alto Dragonfly PM-12 Service Manual page 31

1 2
D
10K CHANGE TO 3K3
C433
22P
R626
3K3
C436 R624
4.7uF 68R
2
EFXRTN-L 1
EFXRTN-L
3
U72A
4580M
RL1B
RY-5W-K
(MUTE)
C434
22P
R627
C438 R625 3K3
4.7uF 68R
2
EFXRTN-R
1
EFXRTN-R
3
C U73A
4580M
RL1C
RY-5W-K
(MUTE)
C432
1.5nF 2.5%
22P
R635
2K2
C439
R634
4.7uF
10K
EFX-SEND 6
DFX SEND
7
5
U74B
4580M
+VCC
LD38
RED
MUTE(GLOW)
PEAK(FLICKER) R648
4K7
B
3
1
2
U75A
LM393
C446 C448 C425
100N 100N 100N
+VCC
U69C U70C U72C
4580M 4580M 4580M
A
-VCC
C447 C449
100N 100N
1 2
3
C441 R630
1.5nF 2.5% 10K
+5VD
CN6
R655
R632 HEADER 8X2
10K
R628
10K
6
10K
2
7
4
5
C422
6
33P 8
U72B
10
4580M
12 11
14 13
16 15
C442
R631
1.5nF 2.5%
10K
GND
R656
R633
R629 10K 10K
6
10K
7
5
C445
33P
U73B
4580M
C440 R636
C435
10K
22P
R638
10K
2
1
R637
3
10K
U74A
4580M
R651
D22A
7K5
RB400D
R652
1M
C431
R653
100N
2M2
5
R654
7
6
1K
U75B
LM393 R650 R649
D24
220R 820K
DA202K
C427 C450 C452
100N 100N 100N
U71B
U73C U74C U75C
NE555
4580M 4580M LM393
C426 C428 C451 C453
100N 100N 100N 100N
3
4 5
+5VD
AR1 AR2
680R*4 680R*4
EN1 EN2
SDB161PVB15FS SDB161PVB15FS
1 1
1 1
2 COM 2
2 2
3 3
4 4
1
4 4
8 8
3
5
VARIATION PRESET
7
DGND
9
+5VD
U77B U77C
3 4 5 6
R639
74HC14 74HC14
47K
U71A
NE555
3 4
OUT RS
2
TG
6
TH
C444
C421
10uF
100N
DGND DGND
+5VD DGND DGND
R641
10K
RL1A
R643
RY-5W-K C437
100N
10K
TR21
BR
D21
U76A
RLS4148 R642
74HC109
TR20 10K
6
Q
BR
R644
10K
7
Q
DGND DGND
U76C
+5VD
C429 C430
74HC109
100N 100N
U77G C443
10uF
74HC14
JP1
DGND PGND
30
4 5
6
C413
22P
R614
R612 36K
36K
C417
2
EFXRTN-L
1
3
47u/25V
R622
U69A
510R
4580M
COM
C414
22P
DGND
R615
R613
36K
36K
C418
2
EFXRTN-R
1
3
47u/25V
R623
U70A
510R 4580M
U76B
74HC109
10
Q J
CLK
9
Q K
R640
+5VD +5VD
10K
R645
D20
10K
2
BAS316
J
4 2 1
CLK
R646
3
U77A
K
220R
74HC14
C424
C423
1uF
1uF
DGND
DGND DGND
UDASP IN/OUT SECTION
6
7 8
PM12 UDSP
C415
22P
R620
36K
6
7
DFXOUT-L
R616
5
36K C419
47u/25V
U69B
4580M
EFFECTS OUT
C416
22P
R621
36K
6
7
DFXOUT-R
R617 5
36K C420
47u/25V
U70B
4580M
U77D
74HC14
14 8 9
12
U77F
74HC14
13
12 13
DGND DGND
D23
BAS316
R647
220R
FOOTSW
SW47A
1
PS-22E85NL
2
3
SW47B
4
PS-22E85NL
5
6
(MUTE)
DGND
Titel
UDASP IN/OUT SECTION
Size Model No: Revision
ALTO PM12
A2(C)
VER031030
Date: 8-Mar-2005 Sheet 6 of 7
File: PM12MN2.S06 Drawn By: Bao.
7 8
D
C
B
A