Lexicon RV-8 Service Manual page 191

8 7
D
+15VA
J1
2
MIC IN 1
3
1
-15VA
C
+15VA
J2
2
MIC IN 2
3
1
-15VA
MICROPHONE BIAS VOLTAGE SUPPLY
B
+15VA
D8
1N4002
CASE=VOUT
3 2
VIN VOUT
LM317M
R16
ADJ
237
1 U3
1%
C23 R25
.1/25 1.50K C24
1% 10/16
A
8 7
6
+15VA
R1
FB1
C5
2.2K
D1
10/16
BAV99
C1
150PF
D2
R3
BAV99
2.2K
R2
330 C6
-15VA C2
10/16
150PF
C7
10/16
FB2
+15VA
R4
FB3
C8
2.2K
D3
10/16
BAV99
C3
150PF
D4 R6
BAV99
2.2K
R5
330
-15VA C9 C4
10/16 150PF
C10
10/16
FB4
9V
D7 R15 C18 C17
1K 22/16 .1/25
1N4002
6
5 4
R11
10.0K
C11
1%
R7
+15VA +15VA
47PF
10.0K C21
C14
1%
8 .1/25
.1/25
5
MC33078
+ 8
7 5
MC33078
+
6 7
-
U1
6
-
4 U2
C20 4
C13
.1/25
R8
.1/25
C12
10.0K -15VA
1%
-15VA
47PF
R12
R18
10.0K
2.00K
1%
1%
C19
R13
47PF
R17
10.0K
C15 102 D5
1%
1%
R9
47PF
+15VA
10.0K BAV99
1% +15VA
8
3
MC33078 8
+
1 3
MC33078
+
2 1
-
U1
2
-
4 U2
4
R10
-15VA
-15VA
C16
10.0K
R22
1%
R14 47PF
2.00K
1%
10.0K
C22
1%
47PF
R21
102
1%
D6
BAV99
5 4
3
REV
R19
MIC1_OUT
[1/C3]
100
R20
MIC1_RET
[1/C3]
100
R24
MIC2_OUT
[1/C3]
100
R23
MIC2_RET
[1/C3]
100
CONTRACT
NO.
DRAWN
CHECKED
Q.C.
ISSUED
3
2 1
REVISIONS
DRAFTER Q.C.
DESCRIPTION
CHECKER AUTH.
CW RWH
1 CHANGED PER DCR 021030-00
11/27/02 11/26/02
CBV MAG
11/20/02 11/26/02
RWH CW
2 CHANGED PER DCR 030317-00
5/21/03 5/22/03
CBV MAG
5/22/03 5/22/03
D
C
B
A
exicon
3 OAK PARK
BEDFORD, MA 01730
TITLE
APPROVALS DATE
SCHEM, MIC/PREAMP BD,RV8
RWH 8/15/02 MIC INPUTS
SIZE CODE NUMBER REV
CBV 8/15/02
B
2
060-15529
CW 8/26/02
FILE NAME
MAG 8/16/02 15529-2 . 2 SHEET 2 OF 2
2 1