E.F. Johnson Company 761X, Service Manual

Page: 96 / 99

8-9
November 1998
Part No. 001-7600-001
UHF (7640) MAIN BOARD SCHEMATIC
5
6
7
8
9
10
15
14
13
12
OPT2
OPT1
AUX
MIC IN
SIG OUT
OPV1
OPV2
OPV3
BUSY
MIC OUT
PTT OUT
PTT IN
3
2
1
4
11 OPT3
GND
16
J4
17
18
19
20
21
22
23
24
25
26
27
28
29
30
SCK
SI
SO
OPINT
OPCS
AF OUT
DET
RXMUT
AF ON
MIMUT
HV
5V
GND
TO OPTION UT-96
UT-105
NC
NC
BEEPO
W6
DC
CABLE
EP3
EP3
GND
VCC
C84 470 D16 DSA3A1 C83 0.1 C82 0.01
D28 RD20E
R59 10k
Q14
2SJ377
R60 470
Q11
DTC114EU
C77 0.001
C75 10
O I
G
IC2 TA7808F
C74 220 C73 0.1
HV
C80 0.1
C78 10
1 2 3
6 5 4
Q12 2SB1132
R58
4.7k
Q13
XP6501
C81 0.1
I
IC3 AN78L05M
O
G
W8
C79 10
CPU5V
PWON
R112
330k
R113 100k
VIN
R56 4.7k
R57 4.7k
Q10 2SD1664
D15
1SS302
C70
47P
C71 10
Q15
DTC114EU
C72 1
R54 4.7k
R55 4.7k
Q8
2SD1664
D14
1SS302
C67 47P C68 10
Q9
DTC114EU
D31
DAN202U
C69 4.7
TXC TMUT
D13
DAN202U
I O
O I
FI2 CFWM450E
FI3 CFWM450G
D12
DAN202U
R52 22k R51 12k R50 22k R53 15k
T8V
R8V
5V
Q7
DTA144EU
NWC
R49 15k
C65 0.01
C66 0.01
1
2
4
5
6
7
8
3
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
16
15
14
13
12
11
10
9
MIXIN
GND
N-REC
N-DET
RSSI
IFOUT
QUAD
AFOUT
IC1
TA31136FN
C64
0.1
R48 1.5k
R42 100k
C63
0.1
R46
100k
C61 270p
C62
270p
R44 820
R45 330k
R41 470
C59
0.001
C60 0.01
NOIS SD
R38 47k R39 47k C55 0.001
C56 0.001
R37 1.2k
C54 0.001
Q5
2SC4081
C52 100p
R47 47
C57 4.7 C58 0.001
X1
CDBCA450CX24
R40
2.2k
C51
100p
Q4
2SC4215
L15 0.18µH
R32 100
C50 68p
C303 0.001
C48 0.001
R34 330
C301 4p
FI1 FL-287
C300 4p C47 12p
R33
330 C46
0.001
L14 56nH
L13 0.12µH
R36 100
C49 0.001
C45 68p C44 0.001
R31
22
Q2
2SK272
R25 100k
C22
6p( L )
5p( ML,H )
4p( MH )
R15 47k
L12 39nH
C42 3p
R27 270
R28
18
R29 270
R25 100k
C34 7p( L ) 6p( ML ) 4p(MH/H)
R11 220k
C309 47p
C19 0.001
T1
D7 HVU350
C23
2p ( L )
1.5p(ML/MH)
L7 15nH
C37
1p ( L )
0.3p(Other)
C36
0.5p
R24
10k
C312 47p
C40 47p
T4
D10 HVU350 R23 220k
C39 7p( L ) 6p( ML ) 5p(Other)
L10 15nH
L9 4.7*H
R20 2.2k
C33
47p
C32 1p ( H ) 1.5p( ML ) 2p ( MH )
C348 0.22
Q3
2SK241
R30 68
C43 0.001
C308
1p
R18 68
C29
L8 15nH C31 0.001
R22
10k
C311 47p
C35 47p
T3
D9 HVU350
R21 220k
R12 10k
C28 1.5p( L ) 0.5p(ML/MH)
C313 47p
C25
C24 1p ( L ) 0.5p(Other)
L11 15nH
C41 1p
R13
220k
C310 47p
C27 47p
D8 HVU350
R14
10k
T2
C26 7p( L ) 6p( ML ) 5p( MH/H )
C20
1.5p
D6 1SS352
R10 4.7k
C21 47p
Q1
DTA144EU
RFATT
C315 47p C314 47p
D5 MA77
C18 2.5p
L5
Y655LY-03K=P3
D4 MI809
C17
L4
D3
MI407 ( )
UM9410F( )
L6
LW-25
C16 470p
R9 220
R8 220
C15 47p
C13
47p
C12 5p(Other) 4p( -MH) 3p( -MH)
L3
LA-382
C10 9p(L,ML) 8p( -MH/H) 6p( -MH)
C11 2p( L )
1p(Other)
L2
C8
0.001
C7
7p
R4 47
FOR
REV
C3
0.001
R5 100
R2 1
D1
MA713
R6 100 R3 100
C6 0.001 C5 0.001
L1
R1 100k
R7 47
W2
ANTENNA
J1
CPU5V
MIC
8V
CPU5V
TEMP
R110
NTCCF20124AH(47k)
R111 100k
-
+
2
3
1
4
IC6a
NJM2902M
R109 10k
C135 2.2
C134 0.001
R108 12k
C133 0.1
R107 100
C132 0.56
6
7
5
IC7b
NJM2904M
+
-
R104 22k
C131 470p
R106 270k
R105 22k R103 220k
DET
AFOUT
B
R102
1
C130
0.047
R101 4.12k
C129
0.047
R100 36k
C128
0.047
+
-
10
9
8
IC6c
NJM2902M
R99
2.2k
C127
0.047 C126
0.047
14
-
+
IC6d
NJM2902M
13
12
R94 1.5k
R96 91k
C307 4.7
R270 1M
Q42
DTC144EU
TXC
R97 47k
R98 47k
AFHPF
Q22
2SC4081
C342 0.001(
only)
TXC
C329 47p
Q44
DTC144EU
Q45
DTA144EU
C339 0.001 ( only)
C298 47p
5V
HV
T8V
R8V
R84 1k
C118 470p
R85 10k
D18 MA77
R86 1k
C120 470p
R87 10k
C121 10p
D19 MA77
R83 4.7k
C117
47p
R81 4.7k
C347 0.001 ( only)
R82 2.7k
C116 0.001
R80 220
Q21
2SC5107
R79 22
L21
C115 0.001
R77 3.3k
C113 7p
C338
R78 1.5k
C112 0.001
R75 100
Q20
2SC5107
R76 22
L20 18nH
C111 0.001
C109
6p( )
7p( )
C108
W7
C106 7p ( only)
C110 0.001
C297 47p
C107 470p
D17
DA221
C105 470p
R71
Q19
2SC4703
L18 22nH
C103
C102
R72
C324 47p C104 470p
R74 220
R73 2.2k
R70 2.2
C336 47p
L19
15nH
C304 12p
C100 22 C99 47p C98 0.001
L17
18nH
C101 5p
EP2
IC5
C286 47p C285 0.001 C97 47p C96 0.001 C344 0.001 C343 0.001 C95 22 C337 2.2
C93
L16
LA-242(Other)
LA-232( -MH, -H)
C91 4.7
Q18
2SB1143
R67 4.7k
R69
150
C92 10 C90 0.1
Q17
2SC4081
R66 68k
R65
68k
C89 0.001
7
6
5
R64
150k
C87
47p
R273 820k
C88 0.022
TMUT
D30 MA111
C86 47p
R62 18k
R271
10k
R63
1M
R61 18k C85 0.001 C302 0.001
C119 0.001 C345 0.001
D23 MA111
R137 4.7k
Q31 2SC4081
C167 10
C166 0.001
R133 10
R140 270
R139
18
R138 270
C165 6p
L31
18nH
C164 6p
C162
6p
L30
27nH
Q30
2SC5110
C163 0.001
R136 220 R135 4.7k
R134 4.7k
C161 470p
Q29
2SC5107 C160 7p
R131 220
R272 1k
R132 180k
C159
2p
C158
12p
C157 470p
Q28
2SC5107
L28 27nH R130 150k
R129
C156 470p
R128
10
C295 0.1 C145 47p
C144 0.001 Q23
2SC5110
C146 0.5p
L24
1µH R118
1k
Q24
DTC114EU
Q27
DTC144EU
C296 0.1
C341 0.001
TXC
Q26
DTC114EU
C340 0.001
R126
560 L27
1µH
C155
0.5p
C346
W9
C154 47p C153 0.001
Q25
2SC5110
R123 4.7k
R124 4.7k
C151 5p( L ) 2p( M ) 8p( H )
C152 8p(L/MH) 4p( ML ) 3p( H )
C143 12p( L ) 8p ( ML ) 6p ( HH ) 5p ( H )
R117 1
R116 6.8k R115 6.8k
C142 10p( L ) 6p ( ML ) 5p ( MH ) 3p ( H )
C139
8p( L )
6p( ML )
4p( MH/H )
R125 10
L23
MC152-E558ANA-100051=P3
C141
18p( L )
15p( ML/MH )
12p( H )
R275 1k
D34 HVU350
D20 HVU350
L22
0.56µH R114
10
C148
5p(L,MH)
4p(ML/H)
C149 R274 1k
D33 HVU350
D22 HVU350
L25
0.18µH R121
47
L26
MC152-E558ANA-100051=P3(L,ML)
MC152-E558ANA-100050(MH, -H )
C150
10p( L )
8p ( ML )
15p( MH )
4p ( H )
R276
C147
1p
R120 100k
D21
1T365
R122 10k
C138 0.001
C188 4.7 C137 470p
C293 0.001
R260 12k (MH only) 8.2k(Other)
+
-
SP1
P1
CHASSIS
J2
SP JACK
C197 0.001
G
AFO
C196 0.001
R172 10k
R173 10k
C195
470
C194 220
1
4
2
3
IC9
LA4425A
R255 10k
C281 0.1
AFO
H
C291
0.1
C292 0.047
R259 22k
C193
0.1
R169
1k
Q32
DTC144EU
D32 MA111
Q41
DTC363EK
R170 6.8k
AFON BEEP
4
3
2
1
5
R165 10k C190
0.1 R167 100
R168 100k
C322
0.22
R166 10k
C191 0.012
D29
DAN202U
AFATT
R160 47k
C187 0.1
R261 100k R164 47k
C189 0.1
R163 10k
1
2
3
8
IC4a
NJM2904M
IC8a
NJM2904M
C349 0.22 R156 56k
R155 10k
R157 1.2M
C184 22p
R264 10k
R158 15k
R258 47k
C185
0.1
C186
0.1
8V
5V
VCC
R159 33k
MICIN MICOUT
A
R265
10k
Q46
DTA144EU
R153 10k
C334 47p
7
6
5
IC8b
NJM2904M
4
8
C180 0.0039
R152 5.6k
R266 10k
R150 100
C282 22
C319
0.1( )
0.0047( )
R279 82k( only)
R162
470k
C179 0.1
R161
470k
7
6
5
+
-
R148
100k
R147 10k
R146
82k
R144
22k
R145
75k
C174
0.1
C175
0.1
C176
2.2
R141
10k
R268 10k
R269
39k
R142
10k
TONE DTCS
C335
47p
C323 10p
W13 W16 W15 W14
C173
12p
L32 0.56µH
C170 5p
C171
4p
C172 5p
L33 0.56µH
C169
12p
R127 4.7k
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
5V
AFO
SI
OPT3
OPT2
OPT1
OPV3
OPV2
OPV1
PTT
PTTIN
DET
PWON
EXPTT
DIMIN
SO
SCK
SD
LVIN
GND
8V
CPU5V
GND
OPINT
OPCS
BUSY
BEEPOUT
TONE
BEEP
DTCSIN
RFATT
NOIS
UNLK
EXEN
EXST
DAST
PLST
VIN
TEMP
MIC
R235
1k
R226
1k
R234
1k
R225
1k
R233
1k
R224
1k
R232
1k
R223
1k
R231
1k
R222
1k
R230
1k
R221
1k
R229
1k
R220
1k
C284
47p
C279
47p
C269
47p
C278
47p
C252
47p
C243
47p
C253
47p
C244
47p
C254
47p
C245
47p
C255
47p
C246
47p
C256
47p
C247
47p
C257
47p
C248
47p
C258
47p
C249
47p
R252
1k
R236
1k
R240
1k
R245
1k
R249
1k
R237
1k
R241
1k
R246
1k
R250
1k
R238
1k
R242
1k
R247
1k
R251
1k
R239
1k
R243
1k
C270
47p
C268
47p
C277
47p
C267
47p
C276
47p
C266
47p
C275
47p
C265
47p
C274
47p
C264
47p
C273
47p
C263
47p
C272
47p
C262
47p
C271
47p
OPINT
OPCS BUSY
BEEPO
TONE BEEP DTCS
RFATT
NOIS
UNLK EXEN EXST DAST
PLST
VIN
TEMP
R228
1k
C259
47p
R219
1k
C250
47p
R218 1M
C260
47p
C251
47p
C261
47p
R248
1k
LVIN
SD
SCK
SO
DIMIN
EXPTT PWON
DET
PTTIN
PTTOUT
OPV1 OPV2 OPV3 OPT1 OPT2 OPT3
SI
AFO
IC12
M62363FP-650C
VIN1
1
2
3
4
5
6
7
12
24
23
22
21
20
19
18
13
EXST
SO
SCK
TXC
TMUT
EXEN
R206 100k
C232
0.01
NWC
AFHPF
AFATT
HORNO R227
1k
R213 100k R214 100k R215 100k R216 1M R217 1M
C
C241 47p C242 47p C240 0.001 C239 0.001
D25 MA111 MM
RM
D24
DAN202U Q37
DTC144EU
R205 10k
R204 10k
RMUT
IC13
BU4094BCF
STRB
DATA
CLK
Q1
Q2
Q3
Q4
VSS
VDD
OENA
Q5
Q6
Q7
Q8
Q,S
QS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VOUT1
VOUT2
VIN2
VDD
LD
CLK
DI
VIN3
VOUT3
VOUT4
VIN4
VIN6
VOUT8
VOUT7
VIN7
GND
RESET
VDAREF
D0
VIN6
VOUT6
VOUT5
VIN5
8 17
9 16
10 15
11 14
C328 47p
C231 0.001
C326 47p C327 47p C325 47p
C227 0.01 C228 0.001 C229 0.001 C230 0.001
T1
T2
DAST
SCK
SO
T3
T4
R199 470
DTCS
14
13
12
11
10
9
8
VDD
CONT A
CONT D
I/O
O/I
O/I
I/O
1
2
3
4
5
6
7
I/O
O/I
O/I
I/O
CONT B
CONT C
VEE
IC11
BU4066BCF
TXC
R198 10k
Q36
DTC144EU
RMUT
C333 47p C225 0.01
+
- 1
8
2
3
4
R194
180k
C223 12p
C321 47p
C221
0.0027
R195
220k
Q35
2SC4081
C332 47p
NWC
R278 10k
R154 100 C183
0.1
R254 470k
C306 47p
R193 470k
R143 1k
E
F D
C222 18p
C177 0.001 C178 47p
HV
5V
R209 100k
C238
10
R212 1M
R210 1M
D27
MA111
R211
100k
VCON
GND
X2
CR-601
VCC
OUT
1
2
4
3
R267 270k R186 100k
C206 10
C212 4.7
R162 10
C211 0.1
C215 8p
R184
2.7k
C214 8p
C208
0.0047
C209 0.001 C210 2.2
L34
18nH
R191 56
C213
0.001
20 19 18 17 16 15 14 13 12 11
GND1
IN2
VCC2
XB
XI
XO
GND2
CP2
FI2
FO2
1 2 3 4 5 6 7 8 9
10
VCC1 IN1 ENB CLK DATA T1 LOK CP1 FI1 FO1
IC10
µPD3140GS
C318 10p
C205 0.001
C198 10
R178 100k
C216 22p
R188 1k
R189 1k
R190 1k
PLST
SCK
SO
UNLK
R187 1k
C217 22p
C218 22p
C219 0.001
C207 470p
C316 47p C299 47p
LVIN
R185 100
R177
68k
CP1
C200 0.001
Q33
2SK880
Q40
2SJ144
C199 0.001
R175 10k
R176 1M
R181
1k
C204 0.47
Q34
2SK536
C203
0.47 R179
1k R180
10k
C201 0.1
C202
0.022
R174 470
J6
HV
GND
HORN
GND
AFO
GND
DISC
GND
IN
GND
PTT
J5
HV
DIM
C233 0.001
C235 0.001
AFO
C289 0.001 C288 0.001 C287 47p C234 0.001
DIMIN
HORNO
Q38
DTC144EU
Q39
DTC144EU
R207
1k
C237
1
EXPTT
DET
R257
47
R208
10k
C236 0.1
IC4b
W10
W12
W11
SIGOUT
+
-
+
-
+
-
+
-
C76 0.1
11
R19 10
R17 100k
C30
0.001
C317
47p
R16 47k
Q16
DTC144EU
C283 470p
IC6b
NJM2904M
8V
AFREF
R95 47K
C330
47P
R151
180k( )
220k( )
J3
to Front unit
J2
Through
W3 of front unit
C226
0.01
C331 470P
R35
120K
FI1b
FI1a
TX:0V
RX:6.6V
C94 6p( -ML)
4p( -MH)
3p( L, -ML)
5p( -MH)
1p( -H)
C14
5P( )
4P( -L,ML)
P ( -MH)
C9 C2 C1
7p(L/ML)
6p( -MH/H)
5p( -MH)
CHASSIS
( only)
R277 470
( -L/ML/MH only)
P
6p( / -H)
7p( -L,M)
22( -H only)
33(Other )
39( -L only)
27(Other )
( only)
R68 2.2k
T4
3.3k( -ML only)
3.9k(Other )
2.7k( -ML only)
3.3k(Other )
10( )
47( )
1p(MH only)
3.5p(H only)
( only)
0.001 ( only)
8V
Wide:oV
Narrow:4.8V
IC7a
NJM2904M
to
DC FAN
to
Optional
OPC-617
J1
P
L
P
L
C38
2.5µ( )
1.5p(ML/MH)
0.5p(H) L
2.5p(H only)
4p(Other)
0.75p(H only) 1p(Other)
P
L
L
2P( -H only)
8p(Other)
Y655LY-02M=P3
( -H only)
Y655-03K
(Other)
L
L
3p( -LML)
4p( -MH, -ML/MH)
6p( -L)
5p( -H) P
P
L
L
L
L
L
P
P
L
P L
L
P
L P
P L
LA382( -H only)
LA232(Other) L
LA-382( -H only)
LA-232(Other) L
SC-1322( -L)
SC-1323(Other )
SC-1236( -L)
SC-1237( -ML)
SC-1325( -MH)
SC-1326( -H) P
P
L
L
L
L
P
L
P
L
8p( -MH,other )
7p(Other , -H) P L
P L
P
P
L
L
L P
P
39( -L only)
27( -H only)
33(Other) P
L
7p( )
8p( -H)
10p(Other)
L
P
7p( )
5p( -H)
6p(Other ) P
L
L
L
18nH( -H only) 22nH(Other)
L
L
L
100( )
10 ( ) P
L
L
L
L
P
R119
Note
-L :PMR L-band -L :LMR L-band P
L
L P -ML:PMR ML-band -ML:LMR ML-band
-ML:PMR MH-band -MH:LMR MH-band L P
-H :LMR H-band L
L
P
L
L
L
L
L
L
L
NOTE: All 7640 Models are the LMR (U.S.A.) type.
7.9V
13.6V
4.5V
5.0V
TX:7.9V
RX:0V
TX:8.5V
RX:0V
TX:0V
RX:7.9V
TX:0V
RX:8.5V
TX:4.7V
RX:0V
13.6V
3.4V
2.4V
2.4V
5.0V
6.7V
13.6V
1.1V
3.9V
7.8V
3.9V
3.9V
MEASUREMENT CONDITIONS
DIGITAL MULTIMETER
INTERNAL RESISTANCE:50k
Ω
/V
IC-F420(LMR):f=460.1MHz,TX POWER=35W
IC-F410(PMR):f=455.1MHz,TX POWER=25W
VOLTAGES INDICATED WITH(*)MARK ARE
CHANGED WITH THE FREGUENCY AND POWER.
1.8V
1.8V
Wide:5.1V
Narrow:0V
WIDE:0V
NAR:4.9V
5.0V
Wide:0.6V
Narrow:0V
TX:0V
RX:0.7V
TX:0V
RX:7.3V
0V
RX:APPROX.
+3VdBm
0V
TX:0V
RX:7.9V
RX:2.3V RX:2.2V
TX:0V
RX:0.9V
TX:0V
RX:7.7V
0V
TX:0V
RX:2.5V
RX:2.3V
TX:0.7V
RX:0V
(*)TX:3.2V
RX:2.8V
(*)TX:11.5V
RX:13.3V
(*)TX:2.1V
RX:0V
(*)TX:2.8V
RX:2.7V
(*)TX:0V
RX:2.9V
(*)TX:2.9V
RX:0V
6.8V
6.8V
0.7V
0.7V
2.8V
2.5V
6.7V
7.9V
(*)TX:9.1V
RX:0V
TX:8.9V
RX:0V
TX:7.4V
RX:0V
TX:1.7V
RX:0V
TX:2.3V
RX:0V
TX:7.6V
RX:0V
TX:Approx.
+7dBm
2.1V
7.6V
(*)TX:3.3V
RX:3.2V
(*)TX:2.8V
RX:2.7V
1.0V
1.9V
0.34V
p-p
2.5V
0V
5.0V
5.0V
2.4V
2.2V
WIDE:0V
NAR:0.6V
5.1V
0V 0V
TX:4.7V
RX:0V
TX:0V
RX:5.1V
RX MUTE:0V
4.9V
5.1V
RX MUTE:
5.1V
2.0V
2.0V
2.0V
TX:2.0V
RX:5.0V
TX:2.0V
RX:3.8V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
TX:0V
RX:7.8V
TX:4.7V
RX:0V
DTMF
3.5V
p-p
5 TONE
3.2V
p-p
CTCSS
0.7V
p-p
15.3MHz
3.1V
TX:0V
RX:0.7V
RX:2.9V
2.4V
5.1V
3.4V
6.4v
DTCS
0.85V
p-p
(PMR only)
(LMR only)