Basic board module block diagram -2, Figure 7-1 basic board module block diagram, Basic board module (bbm) 7-2 – EFJohnson 3000 SERIES User Manual
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BASIC BOARD MODULE (BBM)
7-2
Figure 7-1 BASIC BOARD MODULE BLOCK DIAGRAM
J12
TP8
P3
3
M
-LE
AD OUTPUT
MA
MB
EB
EA
DET
E
C
T
O
R
E-LEAD
-15
V
-48
V
3
2
1
J3
6
PO
VX
CO
D
E
C
R8
3
TP5
TP3
PC
M
LOOP
RCM
A
UDIO
PCM
F
S
K
PERSON
ALITY CARD TX
Tx
DTMF
Tx
P
C
M
FSR
1
2
3
J2
7
CA
R
D
PERSON
ALITY
FR
OM
DTM
F
DECODER
U51
J1
1
T
O
P
E
R
S
ON
ALITY
C
A
RD
6
5
4
3
2
1
R44
T
XA+
TXA-
R4
1
RXA+
R
XA-
S1
S4
8
7
6
5
4
3
2
1
4
3
2
1
S3
R1
02
TD
UA
R
T
U6
RD
SEL
TP4
RD
RC
TD
FS
K
U16
TC
R8
6
R9
0
4
3
2
1
TP9
RXS-
TXS-
RXS+
TXS+