JBL DSC 400, Service Manual

Page: 20 / 52

1 2 3 4
A
B
C
D
4 3 2 1
D
C
B
A
Title
Number Revision Size
A4
Date: 21-Nov-2001 Sheet of
File: D:\Protel\ESC380E\EQ1_Sch.DDB Drawn By:
NC
11
VIN+
10
VIN-
9
MUTE
8
GND
7
NC
6
V+
5
V-
4
O/P
3
NC
2
V+
1
U6
LM3886
R652 1K
R654
1K
R653 20K
C652
22uF
L1 0.7uH
C651
0.1uF
R655
4.7
C653
560p
R651
10K
NC
11
VIN+
10
VIN-
9
MUTE
8
GND
7
NC
6
V+
5
V-
4
O/P
3
NC
2
V+
1
U4
LM3886
R452
1K
R454
1K
R453 20K
C452
22uF
L3 0.7uH
+VCC1
-VCC1
C451
0.1uF
R455
4.7
C453
560p
R451
10K
NC
11
VIN+
10
VIN-
9
MUTE
8
GND
7
NC
6
V+
5
V-
4
O/P
3
NC
2
V+
1
U3
LM3886
R352 1K
R354
1K
R353 20K
C352
22uF
L2 0.7uH
+VCC1
-VCC1
C351
0.1uF
R355
4.7
C353
560p
R351
10K
1
2
JP3
4999A
1
2
JP4
4999A
Amp2
A
1
2
J7
3962-2
+Vcc2
-Vcc2
1
2
3
4
J23
3962-4
1
2
3
4
5
6
J22
3962-6
+Vcc1
-Vcc1
+Vcc2
-Vcc2
Mute 1
2
J10
XH-2
C692
.1
C693
.1
C392
.1
C393
.1
C492
.1
C493
.1
C690
100/50
C691
100/50
C390
100/50
C391
100/50
C490
100/50
C491
100/50
C652
22uF C352
22uF C452
22uF
1
2
3
JP6
4999A
From J14
EQ
From J14
EQ
From J14
EQ
To Woofer
From J97
Power supply
From JP7
Amp1
To JP 23
Connector
AMP2