Infinity BassLink 4sc Service Manual page 22

Amplifier Expansion Module
1
D
SW500A 4 J14
1
+7V 3
2
R500
W
3
2
1K
4
5
1
CON6
2P4T
200HZ-XTRL
D502
400HZ-XTRL
C
D500 4148 D501
100K 100K
-7V
R-SEL
B
R-BYPASS
R524 R526
CUT1
10K 10K
R527
-15V
CH2-EQ
R525
2 U502A
EQOUT-A
1
10K
3
L-SEL
+15V
L-BYPASS
R528
CH1-EQ
A
1
2
J5
CON6
+7V
D504
4148
D505 SW-O
4148
D503
4148
D506
4148
R501
D507 R502
4148
10K
10K
C500
0.01uf
-7V
EQ-MUTE
R580
-7V
100K
+15V
U503A
U504A
13
CONT
R529
1 2 3
I/O I/O
1
10K
CD4066 2
U503B
5
TL072
CONT -15V
3 4
I/O I/O
10K 11K
R533
R579 CD4066 R532
10K R531 10K
100K
GND
R581
-7V
100K
U503C
6 U504B
CONT
R530
8 9 5
I/O I/O
7
10K
CD4066 6
U503D
12 TL072
CONT
R534
10 11
I/O I/O
10K 11K
R582 CD4066 R539
10K R538 10K
100K
GND
2
3 4
Q503
+7V
4403
C505 R544
Q504
R543 2.2K
2.2k 103/C
4403
R504 R505 D510
10K 10K
R503
10K D512
4148
D511 D513
Q500
4148
4401
R540 R506 4148
Q501
10K 4401 10K
ZD502
D508
3V
4148
R548 R541
2K 100K
D519
4148
CH2
R3
11k
U501A
13
CONT
R512
1 2
CH1-EQ I/O I/O
10K
CD4066
U501B
5
CONT
R511
3 4
CH2-EQ I/O I/O
10K
R517 CD4066
11K
CH1
21
3 4
BassLink 4sc
5
R546 D518 R547
C506 C507
2.2K 2.2K
103/C 4148 103/C
Q505 Q506
4403 4403
R507
10K D516
R509
R-SEL
10K
4148 4148
D515 D517
Q502
4401 4148 4148
R545 R508 R510
D514
2.2K 10K 10K
4148
R542
ZD5 ZD6
100K
10V
10V
R516
4.7K
U502B
5
U503E
7
EQ-IN
6
TL072
R513
VDD
CD4066
10K
VSS
TITLE:
DRAWN BY:
LWH
DWG NO:
5
6
U506E U510E U501E
+7V
VDD VDD VDD
CD4066 CD4066 CD4066
VSS VSS VSS
-7V
BASSLINK 4SC
APPOVED:
DATE: CHECKED: DATE: DATE:
2005/11/11
BASSLINK 4SC-E-02 VER: A2 PCB VER: 2.0 SHEET: 5/7
6
D
C
B
A