EFJohnson 7780 Two-Way Radio User Manual


 
SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS
8-9
November 1999
Part No. 001-7780-500
K
C
S
M
O
S
M
P
S
E
P
S
D
N
G
D
N
G
E
P
S
P
S
L
5
+
52204-2990
J1
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
2
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
1
9 8 7 6 5 4 3 2 1
D
E
L
K
B
D
E
L
T
A
B
D
E
L
Y
S
B
D
E
L
X
T
3
R
Y
E
K
2
R
Y
E
K
1
R
Y
E
K
0
R
Y
E
K
3
S
Y
E
K
2
S
Y
E
K
1
S
Y
E
K
0
S
Y
E
K
N
E
S
I
D
T
S
S
I
D
C
I
M
E
C
I
M
D
N
G
D
N
G
D
N
G
D
N
G
KEYR3
KEYR2
KEYR1
KEYR0
KEYS3
KEYS2
KEYS1
KEYS0
GND
GND
AXN820735
J2
20 19
18 17
16 15
14 13
12 11
10 9
8 7
6 5
4 3
2 1
BKLED
SPE
SP
GND
GND
+5L
GND
GND
MICE
MIC
8
S
2
1
S
1
1
S
0
1
S
9
S
7
S
6
S
5
S
4
S
3
S
2
S
1
S
680P
C2
47K
R8
100K
R9
SPE
CP2
SP
CP1
33P
C1
0.047
C3
LNJ310M6URA
DS2
LNJ310M6URA
DS1
150
R2
150
R17
LNJ310M6URA
DS8
LNJ310M6URA
DS7
R
HR3
R
HR2
R
HR1
47K
R7
0.1
C6
0.1
C7
LC75834W
IC1
47
CL
46
CE
45
INH
44
OSC
43
VSS
42
VLCD2
41
VLCD1
40
VLCD
39
VDD
38
COM4
5
3
1
M
O
C
4
3
4
3
S
3
3
3
3
S
2
3
2
3
S
1
3
1
3
S
0
3
0
3
S
9
2
9
2
S
8
2
8
2
S
7
2
7
2
S
6
2
6
2
S
23
S23
22
S22
21
S21
20
S20
19
S19
18
S18
17
S17
16
S16
15
S15
14
S14
1
1
1
1
S
0
1
0
1
S
9
9
S
8
8
S
/
8
P
7
7
S
/
7
P
6
6
S
/
6
P
5
5
S
/
5
P
4
4
S
/
4
P
3
3
S
/
3
P
2
2
S
/
2
P
48
DI
37
COM3
6
3
2
M
O
C
5
2
5
2
S
24
S24
13
S13
2
1
2
1
S
1
1
S
/
1
P
S21
S20
S22
S23
S24
S13
S14
S15
S16
S17
S18
S19
2
S
4
1
S
3
1
S
0
1
S
1
S
6
S
5
S
2
C
1
C
1
3
S
9
S
7
1
S
8
1
S
2
2
S
5
2
S
6
2
S
9
2
S
4
3
S
2
3
S
3
3
S
4
3
S
5
2
S
6
2
S
7
2
S
8
2
S
9
2
S
0
3
S
0.1
C4
3
C
1
C
4
C
4
C
3
C
0
3
S
3
3
S
12K
R18
3.3K
R3
SEC1801C
DS5
SEC1401C
DS4
10K
R1
2SA1576 S
Q1
SEC1601C
DS3
TX LED
1K
R12
2SA1576
Q2
47K
R11
47K
R13
BUSY LED
1K
R14
47K
R15
820
R16
2SA1576
Q3
2SA1576
Q4
BATTERY
LD-BU10394J
DS6
0
4
2
S
9
3
5
S
8
3
6
S
7
3
1
S
6
3
9
S
5
3
0
1
S
4
3
3
1
S
3
3
4
1
S
2
3
7
1
S
1
3
8
1
S
0
3
2
2
S
9
2
5
2
S
8
2
6
2
S
7
2
9
2
S
6
2
4
3
S
5
2
0
3
S
4
2
3
3
S
3
2
1
C
2
2
3
C
1
2
4
C
0
2
2
C
9
1
1
C
8
1
3
C
7
1
2
3
S
6
1
1
3
S
5
1
8
2
S
4
1
7
2
S
3
1
4
2
S
2
1
3
2
S
1
1
1
2
S
0
1
0
2
S
9
9
1
S
8
6
1
S
7
5
1
S
6
2
1
S
5
1
1
S
4
8
S
3
7
S
2
4
S
1
3
S
33P
C5
1
3
S
2
3
S
1
C
2
C
3
C
4
S
7
S
6
1
S
5
1
S
2
1
S
8
S
7
2
S
1
1
S
8
2
S
9
1
S
4
2
S
3
2
S
1
2
S
0
2
S
3
S
DISPLAY BOARD SCHEMATIC