EFJohnson 7780 Two-Way Radio User Manual


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November 1999
Part No. 001-7780-500
TX_IN
TX_OUT
SW_BATT
39K
R202
39K
R201
TC4W66FU
IC204
5876
4321
0.1
C206
0.1
C228
33PC450
33PC443
33PC435
33PC436
33PC434
33PC437
33PC451
5.6K
R166
18K
R143
100
R245
1
C204
MC33111D
IC208
6
1
C
C
V
5
1
O
E
4
1
I
E
3
1
C
N
2
1
M
E
1
1
F
E
0
1
2
O
I
9
2
I
I
8
T
P
7
1
I
I
6
1
O
I
5
F
C
4
M
C
3
I
C
2
O
C
1
D
N
G
1.8K
R246
33K
R207
33K
R339
22K
R338
1
C222
1
C223
1K
R247
0.0047
C201
0.0047
C202
220K
R205
47K
R204
0.0047
C203
33P
C229
1M
R213
5.6K
R211
56K
R208
1K
R214
NJM2904V
IC202A
8
4
1
2
3
ERJ3GE-JPW
W5
0.0047
C205
TX_IN
TX_OUT
NJM2904V
IC202B
7
6
5
0.1
C48
820
R215
0.0033
C210
3.3K
R222
39K
R220
470K
R216
+5V
TEST
56P
C212
0.0047
C213
0.047
C208
560P
C211
150K
R224
68K
R223
82K
R221
1
C209
NJM2904V
IC205A
8
4
1
2
3
0.1
C44
10K
R227
10K
R226
4.7K
R228
5.6K
R225
TC75S54F
IC201
5
4
2
3
1
0.1
C45
MSCK
1
C214
33P
C9
10K
R244
NJM2904V
IC205B
7
6
5
SQLC
TA
33P
C10
33P
C8
33P
C4
33P
C2
33P
C1
AXK520145P
J4
20
19
18
17
16
15
14
13
12
1110
9
8
7
6
5
4
3
2
1
OP4CP204
OP3CP203
OP1
CP201
OP2CP202
0.1
C31
0.1
C30
BEEPO
AMUTO
AMUTI
RF5C
EXTDC
OPTB
RX_IN
RX_OUT
PTT_IN
PTT_OUT
T5C
CLR/CODE
33P
C13
33P
C14
BATT
33P
C7
33P
C6
VCC
+5V
MOD
LTR
W/N
RSSI
ULOCK
PLLST
PLLSK
PLLSO
100K
R407
200K
R406
AXK5S30245P
J1
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0.22
C414
33P
C12
33PC20
33PC11
33PC25
33PC23
33PC15
33P
C3
33P
C5
33PC24
T5V
PWR
NOISE
0.1
C49
TMUTDET
R5V
BATIN
0.1
C225
ERJ3GE-JPW
W1268K
R241
TC4W53FU
IC210
8
7
6
5
4
3
2
1
4.7
C226
1
C227
10K
R249
50k
AD8403
IC209
4
2
1
B
3
2
1
A
2
2
1
W
1
2
1
D
N
G
A
0
2
3
B
9
1
3
A
8
1
3
W
7
1
3
D
N
G
A
6
1
D
D
V
5
1
S
R
4
1
K
L
C
3
1
O
D
S
2
1
I
D
S
1
1
S
C
0
1
N
D
H
S
9
D
N
G
D
8
4
W
7
4
A
6
4
B
5
4
D
N
G
A
4
2
W
3
2
A
2
2
B
1
2
D
N
G
A
MSO
+5S
10K
R243
DPOTST
R5C
TC4W53FU
IC203
8
7
6
54
3
2
1
MC33172D
IC206B
7
6
5
10K
R240
0.0022
C218
330K
R239
+5L
VOL_IN
47K
R238
MC33172D
IC206A
8
4
1
2
3
DTC144EE
Q201
R
T
_
N
S
+5S
BWC
DTMF
L5V
47K
R237
0.1
C43
0.0033
C217
0.1
C219
47K
R170
27K
R232
1
C134
TC7S66FU
IC103
45
321
100K
R236
0.01
C26
RXDATA
100K
R302
470K
R301
100K
R235
0.01
C216
0.01
C215
27K
R231
0.1
C108
+5V
10K
R142
S-81230SG
IC403
5
NC
4
NC
3
VOUT
2
VIN
1
GND
470K
R210
1
C130
+5L
1
C456
DTMFMT
PT
+5S
L5V
DTMF
MMUTE
RMUTE
100K
R333
1
C224
220K
R254
1.2M
R212
2.2K
R253
1
C46
2.7K
R206
0.01
C16
33P
C444
33P
C433
2.7K
R203
33P
C432
CP11
CP10
CP9
CP8
CP7
CP6
CP5
CP4
CP3
CP2
CP1
MIC
MICE
BKLED
BATLED
BSYLED
TXLED
KEYR3
KEYR2
KEYR1
BSYLED
+5L +5L
MSCK
MSO
L5V
MSO
MSCK
CP26
CP25
CP24
CP23
CP22
CP21
CP20
CP19
CP18
CP17
CP16
CP15
CP14
CP13
CP12
SPE
SP
KEYR0
KEYS3
KEYS2
KEYS1
KEYS0
DISEN
DISST
NPSPAC
SQLC
TA
100K
R332
MSCK
I
S
M
L5V
R5C
BEEP
T5C
TMUT
ULOCK
PLLST
X
R
_
N
S
C
D
T
X
E
O
S
M
0.01
C55
0.1
C54
C
E
R
P
X
T
I
S
S
R
V
5
L
N
I
T
A
B
E
T
U
M
M
E
S
I
O
N
C
W
B
A
T
A
D
X
R
A
T
A
D
X
T
T
S
E
T
0
R
Y
E
K
1
R
Y
E
K
2
R
Y
E
K
3
R
Y
E
K
T
S
T
O
P
D
10K
R112
560K
R116
R
HR2
47K
R113
0.01
C159
0.1
C207
0.01
C109
100K
R328
100K
R329
O
P
E
E
B
DTC144EE
Q101
OFFREQI
QSEL0I
DTMFCK
FCN
AUX
0.01
C19
O
S
M
K
C
S
M
T
M
F
M
T
D
P
E
E
B
DTMFSO
TXD
OFFRQ
3.579MHz
CR-563
X1
S
C
P
E
E
10K
R308
10K
R309
X25128
IC304
16
VCC
15
HOLD
14
NC
13
NC
12
NC
11
NC
10
SCK
9
SI
8
VSS
7
WP
6
NC
5
NC
4
NC
3
NC
2
SO
1
CS
I
S
M
0.1
C421
T5C
S5C
PCD3312CT
IC303
8
SDA
7
SCL
6
A0
5
TONE
4
OSCO
3
OSCI
2
VDD
1
VSS
0.01
C18
+5V
RF5C
0.001
C422
0.001
C416
R5V
T5V
+5S
4.7
C412
UMD6
Q406
1
2
3
4
5
6
UMD6
Q405
1
2
34
5
6
UMD6
Q404
1
2
34
5
6
4.7
C423
4.7
C415
0.001
C418
33P
C413
0.001
C410
33P
C411
4.7
C409
6.8K
R250
10K
R252
12K
R251
BATT
2SJ316
Q403
VCC
TXDATA
LVCC
0.1
C420
33P
C406
0.001
C405
4.7
C404 100K
R403
MA2S111
D401
TK11250BM
IC402
3
N.BYPASS
6
VIN
5
GND
4
VOUT
2
GND
1
CONT
TK11250BM
IC401
3
N.BYPASS
6
VIN
5
GND
4
VOUT
2
GND
1
CONT
2SJ316Q402
1K
R408
2SC4081
Q401
MA2S111
D402
18K
R401
MA8039
D403
ERJ3GE-JPW
W7
R
HR1
15P
C303
18P
C304
9.8304MHz
CR-635
X2
ERJ3GE-JPW
W10
10K
R402
T5V
PSW
S-80842ALNP
IC305
4
VSS
3
NC
2
VDD
1
OUT
0.1
C301
33P
C401
1
C403
100K
R404
100K
R310
33P
C408
4.7
C407
0.01
C22
0.1
C21
18K
R303
27P
C305 MA2S077
D301
1K
R306
0.1
C306
12K
R304
10K
R312
C
HC3
2SC4081
Q301
100K
R330
CSHIFT
10K
R248
MD1
NMI
100K
R322
L5V
0.22
C307
1K
R311
100K
R321
MA2S111
D302
220K
R314
220K
R315
470K
R313
RESET
RXD
HD6432144FA20
IC306
9
9
1
K
C
S
/
5
Q
R
I
/
6
8
P
8
9
1
D
X
R
/
4
Q
R
I
/
5
8
P
7
9
1
D
X
T
/
3
Q
R
I
/
4
8
P
6
9
3
8
P
5
9
2
8
P
3
9
0
8
P
4
9
1
8
P
2
9
S
S
V
1
9
0
D
/
0
B
P
0
9
1
D
/
1
B
P
9
8
5
1
D
/
7
3
P
8
8
4
1
D
/
6
3
P
6
8
3
1
D
/
5
3
P
7
8
2
1
D
/
4
3
P
5
8
1
1
D
/
3
3
P
4
8
0
1
D
/
2
3
P
3
8
9
D
/
1
3
P
2
8
8
D
/
0
3
P
1
8
2
D
/
2
B
P
0
8
3
D
/
3
B
P
9
7
0
A
/
0
1
P
74
P15/A5
73
P16/A6
72
P17/A7
71
VSS
70
VSS
69
PB4/D4
68
PB5/D5
67
P20/A8
66
P21/A9
65
P22/A10
64
P23/A11
63
P24/A12
62
P25/A13
61
P26/A14
60
P27/A15
59
VCC
58
PB6/D6
57
PB7/D7
56
P47/PWX1
55
P46/PWX0
54
P45/TMRI1
53
P44/TMO1
52
P43/TMCI1
51
P42/TMRIO/SCK2
0
5
0
O
M
T
/
2
D
X
R
/
D
X
R
R
I
9
4
I
C
M
I
/
2
D
X
T
/
D
X
T
R
I
8
4
6
1
A
/
8
N
I
C
/
8
N
I
K
7
4
7
1
A
/
9
N
I
C
/
9
N
I
K
6
4
S
S
V
A
5
4
7
7
P
/
7
N
A
/
1
A
D
4
4
6
7
P
/
6
N
A
/
0
A
D
3
4
5
7
P
/
5
N
A
2
4
4
7
P
/
4
N
A
1
4
3
7
P
/
3
N
A
0
4
2
7
P
/
2
N
A
9
3
1
7
P
/
1
N
A
8
3
0
7
P
/
0
N
A
7
3
C
C
V
A
6
3
F
E
R
V
A
5
3
7
N
I
C
/
7
N
I
K
/
7
Q
R
I
4
3
B
O
T
F
/
6
N
I
C
/
6
N
I
K
3
3
D
I
T
F
/
5
N
I
C
/
5
N
I
K
2
3
C
I
T
F
/
4
N
I
C
/
4
N
I
K
1
3
8
1
A
/
0
1
N
I
C
/
0
1
N
I
K
0
3
9
1
A
/
1
1
N
I
C
/
1
1
N
I
K
9
2
B
I
T
F
/
3
N
I
C
/
3
N
I
K
8
2
2
N
I
C
/
2
N
I
K
/
Y
I
M
T
7
2
A
O
T
F
/
1
N
I
C
/
1
N
I
K
6
2
I
C
T
F
/
0
N
I
C
/
0
N
I
K
25
ADTRG/IRQ2/LWR
24
IRQ1/P91
23
IRQ0/P92
22
RD/P93
21
KIN12/CIN12/A20
20
KIN13/CIN13/A21
19
HWR/P94
18
IOS/AS/P95
17
EXCL/P96
16
WAIT/P97
15
VSS
14
TXD0/P50
13
RXD0/P51
12
SCK0/P52
11
KIN14/CIN14/A22
10
KIN15/CIN15/A23
9
VCC
8
STBY
7
NMI
6
MD0
5
MD1
4
FWE
3
EXTAL
2
XTAL
8
7
1
A
/
1
1
P
75
P14/A4
7
7
2
A
/
2
1
P
6
7
3
A
/
3
1
P
0
0
1
O
S
E
R
1
RES
OFFRQ
0.047
C308
TC7S04FU
IC115
4
5
3
2
1
100K
R331
ERJ3GE-JPW
W6
PTTIN
PTT_IN
PTT_OUT
W/N
PT
PLLSO
PLLSK
DISST
DISEN
KEYS3
KEYS2
KEYS1
MA2S111
D309
33PC447
33PC448
33PC449
33P
C446
CP27
33P
C431
33P
C454
33PC438
33PC439
33PC440
33PC441
33PC430
FCNB
MICE
AUXB
PTT
EXTMIC
ERJ3GE-JPW
W11
33P
C28
TXD
MA8056
D313
470
R337
MA2S111
D310
33P
C27
33P
C33
33P
C32
EXTMIC
PTT
FCNB
AUXB
MICE
GND
GND
470
R323
470
R320
470
R318
52207-0590
J3
5
4
3
2
1
TXD
XTXD
2.2K
R147
1
C145
100K
R319
ERJ3GE-JPW
W8
O
T
U
M
A
I
T
U
M
A
100K
R324
100K
R317
MA8056
D307
MA8056
D308
FCN
AUX
MA8056
D306
MA8056
D305
KEYS0
47K
R169
2.7
R131
0.01
C142
2.7
R132
0.1
C121
1
C141
EC10SP16-51
S1
6
8
5
4
4
2
3
1
2
2
C
1
1
C
I
Q
E
R
F
F
O
TC7W32FU
IC309
8
7
6
54
3
2
1
R
T
_
N
S
BATLED
OPTB
CLR/CODE
T
U
M
A
E
T
U
M
R
T
M
F
M
T
D
C
5
S
PTTIN
S
C
P
E
E
33P
C144
0
L
E
S
Q
1
L
E
S
Q
2
L
E
S
Q
3
L
E
S
Q
D
E
L
X
T
D
E
L
Y
S
B
BKLED
XTXD
XRXD
33
C123
0.1
C122
UMG2
Q112
4
51
2
3
MC33172D
IC107A
8
4
1
2
3
SN_RX
BWC
+5S
T5V
RXDATA
PSW
DTC144EE
Q108
DTC144EE
Q104
MC33172D
IC114A
8
4
1
2
3
1
C158
MC33172D
IC113A
8
4
1
2
3
QSEL0I
33K
R162
33K
R161
1
C157
MA2S111
D104
15K
R160
MA2S111
D105
MC33172D
IC114B
7
6
5
22K
R159
22K
R156
0.0033
C126
MC33172D
IC113B
7
6
5
MC33172D
IC112B
7
6
5
0.0068
C156
0.022
C155
0.0022
C154
0.047
C153
15K
R158
2K
R157
20K
R155
3.3K
R154
MA2S111
D102
MC33172D
IC112A
8
4
1
2
3
MA2S111
D101
100K
R140
560K
R139
330K
R137
DTC144EE
Q103
100K
R141
MC33172D
IC102B
7
6
5
4.7
C129
0.0022
C128
33K
R153
+5V
MC33172D
IC102A
8
4
1
2
3
C
HC4
0.01
C17
TC4W53FU
IC110
8
7
6
5
4
3
2
1
DET
SN_RX
SN_TR
+5S
0.01
C152
10K
R152
1K
R151
1K
R150
0.01
C124
47K
R136
100K
R133 47K
R135
0.01
C125
100K
R134
100K
R102
56K
R167
DTC144EE
Q111
NPSPAC
150K
R101
47K
R165
UMG2
Q110
4
5
1
2
3
W/N
0.01
C101
+5S
BATT
LVCC
R5V
RX_IN
RX_OUT
ERJ3GE-JPW
W4
0.1
C52
470P
C102
0.001
C103
150K
R110
560K
R108
5.6K
R109
0.01
C105
0.039
C104
390K
R106
0.1
C51
MC33172D
IC101A
8
4
1
2
3
0.1
C127
0.01
C106
0.1
C53
120K
R105
MC33172D
IC107B
7
6
5
100K
R111
1
C107
27K
R107
47K
R104
47K
R103
2.7K
R168
10K
RV-283
R117
1K
R125
0.1
C136
2.2K
R163
C
HC2
C
HC1
MC33172D
IC101B
7
6
5
33P
C113
33P
C419
1.2
R148
100K
R164
DTC144EE
Q109
4.7
C111
2.7
R127
10K
R145
MA2S111
D103
2SB798
Q106
4.7
C138
1
C139
1
C137
4.7u
C140
TDA7233D
IC104
8
+INPUT
7
-INPUT
6
SVR
5
OUTPUT
4
+VS
3
GND
2
MUTE
1
GND
TDA7233D
IC105
8
+INPUT
7
-INPUT
6
SVR
5
OUTPUT
4
+VS
3
GND
2
MUTE
1
GND
TDA7233D
IC106
8
+INPUT
7
-INPUT
6
SVR
5
OUTPUT
4
+VS
3
GND
2
MUTE
1
GND
0.1
C118
RXD
XRXD
1
C143
2SA1576
Q102
1
C115
0.047
C116
100K
R146
DTC144EE
Q105
MA8056
D311
6.8K
R119
6.8K
R118
10K
R149
2SC4081
Q107
L5V
PSW
0.047
C110
100K
R326
100K
R325
AFO
LVCC
BATT
MD1
10K
R124
RESET
100K
R120
F1
J1
1
2
3
4
5
6
7
8
9
TXD
RXD
LVCC
GND
PSW
RESET
AFO
Z
HD1
470
R316
470
R335
DTC144EE
Q302
MA8160
D312
1K
R336
RXD
PSW
52396-0990
J2
9
8
7
6
5
4
3
2
1
RESET
LVCC
GND
AFO
33P
C402
33P
C29
JACK BOARD
PTT BOARD
33P
C36
(CHASSIS UNIT)
(CHASSIS UNIT)
UNIT
CHASSIS
BANDPASS FILTER (300-3000 Hz)
On-Off/
Volume
Switch
LEVEL ADJ
RECEIVE AUDIO PROCESSING
RECEIVE DATA PROCESSING
LOW PASS FILTER
DC RESTORATION
Wideband = Low
AUDIO AMP
AUDIO AMP
AUDIO AMP
CHANNEL SEL SW
SUPPLY SWITCHING
AMP SELECT
IC306
MICROPROCESSOR
RESET
CLOCK
SHIFT
DTMF ENCODER
+5L REGULATOR
LVCC
SW
VCC
SW
+5V REGULATOR
+5S SW
T5C SW
R5C SW
16k x 8 EEPROM
DTMF
MUTE
TO
DISPLAY
BOARD
MIC/DTMF MUTE
COMPANDER
3V REGULATOR
RX
AUDIO
MUTE
Rx Audio
Rx Audio
TX AUDIO PROCESSING
TX DATA PROCESSING
HIGHPASS FILTER
LIMITER
SPLATTER FILTER
DIGITAL
POT (4)
SN/
TX
DATA
SEL
FILTER
BYPASS
L = TEST
TO
RF
UNIT
OPTION
COMBINER
H = Tx
SMARTNETTX/RX DATA PROCESSING
DC RESTORATION
TX/RX SW
BANDPASS FILTER
TO
BATTERY
9
8
7
6
5
4
3
2
1
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Radio
LOGIC BOARD SCHEMATIC
8-7
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