![background image](http://html2.mh-extra.com/html/icom/ic-f620/ic-f620_service-manual_3734180034.webp)
R320
3.3k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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18
19
20
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84
85
86
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89
90
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92
93
94
95
96
97
98
99
100
MAIN
UNIT
(1)
IC20
HD64F2268TF
PM6/SEG31
PM5/SEG30
PM4/SEG29
PM3/SEG28
PM2/SEG27
PM1/SEG26
PM0/SEG25
PL7/SEG24
PL6/SEG23
PL5/SEG22
PL4/SEG21
CVCC
PL3/SEG20
PL2/SEG19
PL1/SEG18
PL0/SEG17
PK7/SEG16
PK6/SEG15
PK5/SEG14
PK4/SEG13
PK3/SEG12
PK2/SEG11
PK1/SEG10
PK0/SEG9
VSS
PJ7/WKP7/SEG8
PJ6/WKP6/SEG7
PJ5/WKP5/SEG6
PJ4/WKP4/SEG5
PJ3/WKP3/SEG4
PJ2/WKP2/SEG3
PJ1/WKP1/SEG2
PJ0/WKP0/SEG1
P10/TIOCA0
P11/TIOCB0
P12/TIOCC0/TCLKA
P13/TIOCD0/TCLKB
P14/TIOCA1/IRQ0
P15/TIOCB1/TCLKC
P16/TIOCA2/IRQ1
P17/TIOCB2/TCLKD
AVSS
P97/AN9/DA1
P96/AN8/DA0
P47/AN7
P46/AN6
P45/AN5
P44/AN4
P43/AN3
P42/AN2
P41/AN1
P40/AN0
VREF
AVCC
PH7/TONED/TMCI4
MD1
OSC2
OSC1
RES
NMI
STBY
VCC
XTAL
VSS
EXTAL
FWE
MD2
P77/TXD2
P76/RXD2
P75/TMD3/SCK2
P74/TMO2
P73/TMO1
P72/TMO0
P71/TMRI23/TMCI23
P70/TMRI01/TMCI01
P30/TXD0
P31/RXD0
P32/SCK0/SDA1/IRQ4
P33/TXD1/SCL1
P34/RXD1/SDA0
P35/SCK1/SCL0/IRQ5
PF3/ADTRG/IRQ3
C2
C1
V3
V2
V1
PH3/COM4
PH2/COM3
PH1/COM2
PH0/COM1
PN7/SEG40
PN6/SEG39
PN5/SEG38
PN4/SEG37
PN3/SEG36
PN2/SEG35
PN1/SEG34
PN0/SEG33
PM7/SEG32
BUS LINE1
8V
5V
BUS LINE2
T8V
R8V
ANT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
RXFO
RXGS
RXIN
MSKGS
MSKIN
TXOUT
IOCGS
IOCIN
TXFO
AGND
CST
MICIN
MICGS
CALO
ALCO
CMPIN
CCHG
CMPO
TXFI
VDDA
VDDD
STB
DIN
DCK
REGS1
REGS2
XOUT
XIN
MSKE
TRD
RRM
RDT
FCLR
VSSD
VSSA
MSKST
PWROP
PWRON
PWRGS
PWRIN
EXPO
ECHG
EXPGS
EXPIN
IC14
TC35453F
DET
DISC
B
R111
22k
C164
0.001
C165
0.001
C166
0.001
R113
390k
R285
4.7k
SDEC
R241
100k
R242
39k
C316
820p
R243
82k
C317
820p
R245
180k
C318
0.1
-
+
9
10
8
IC21c
NJM12902V
R244
390k
R246
1.5k
C319
0.047
R233
100k
R120
100k
Q20
2SC4213
R118
68k
R119
180k
R115
12k
C167
0.027
C168
0.039
C169
0.039
R116
1.5k
+
-
5
6
7
IC21b
NJM12902V
R117
5.6k
C170
0.033
C171
0.0047
MCOT
MCIN
A
C187
0.0022
C186
0.0022
C188
0.1
R122
10k
Q21
2SC4116
R121
10k
C185
0.1
R123
4.7k
R125
22k
R124
33k
C189 0.1
C176
22
R230 10k
R129 470k
C190
100p
R130 27k
R131 68k
C180 0.1
C174 0.1
C181 0.1
R127
22k
C361
0.0012
R126
22k
APST
5V
X3
CR-563
C177
15p
C178
18p
ADIN
SCK
ADIN
AMSK
ATRD
SO
AFCL
R137
1k
ARTM
ARDT
C193 0.1
R136 1k
C195 0.1
C194
120p
R135
100k
R134
150k
R133
220k
C192
0.0047
C191
0.039
R132
56k
C196
0.01
8
7
6
5
1
2
3
4
VCC
WP
SCL
SDA
A0
A1
A2
VSS
IC23
HN58X24128FPI
ESDA
ESCL
R282
100k
5V
R281 10k
C343
0.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IC19
LC73872M
INPUT
NC
PO
OSCO
OSCI
NC
VSS
LOADB
SD
ACK
STD
EST
NC
VDD
MICI
5V
5V
5V
5V
FSW
C311
0.1
C182
0.1
DDAC
R238
100k
DDST
DDSD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VIN1
VOUT1
VOUT2
VIN2
VDD
LD
CLK
DI
VIN3
VOUT3
VOUT4
VIN4
VIN5
VOUT5
VOUT6
VIN6
DO
VDAREF
RESET
GND
VIN7
VOUT7
VOUT8
VIN8
IC6
M62364FP
R216 33k
R215 3.9k
BEPO
R218
27k
C360
0.1
BEEP
DAST
C183
0.047
SCK
SO
MICI
R146
100k
CTCS
TENC
C284
0.01
R220
56k
C283
0.001
R231
1k
DET
SQIN
MOD
REF
5
4
1
2
3
CD
NC
OUT
VDD
VSS
C344
0.027
IC24
S-80942ANMP-DD6
TEMP
AFVI
EPTT
RES
CLO
CLI
CSFT
DUSE
XCTS
XRTS
R288
10k
MD1
R299
100k
PWR
PWON
D28
DAN222
BAL
1
5
3
2
IC25
TC4S66F
4
Q49
DTC144EU
Q50
DTC144EU
R317
100k
C377
0.1
R321
68k
C399
0.1
Q41
DTA144EU
PA
R280
10
X4
CR-520
C341
12p
C342
22p
R277
12k
C339
27p
R278
12k
D27
MA77
C340
0.01
1
2
3
4
5
6
7
8
AO1
AO2
AO3
AO4
GND
SDA
SCL
VCC
IC7
M62334FP
VAG
R302
10k
R222
470
C286
0.1
T1
T2
T3
T4
R276
12k
DET
R247
22k
C320
0.039
R248
22k
C323
0.0068
C322
0.01
R249
22k
+
-
5
6
IC5
NJM12904V
7
C321 0.1
R252
220k
C327
4.7
C325
0.0033
C324
0.1
R253
18k
R254
47k
R255
47k
-
+
3
2
1
IC5
NJM12904V
IC22
TC4S66F
2
4
3
1
5
V+
GND
8
4
C349
0.1
CDEC
R258
470
VAG
SQIN
Q35
XP1214
1
2
3
5
4
R251
68k
DUSE
SENC
C328
1
R259
5.6k
R261
33k
R263
22k
R260
33k
C329
0.018
R262
33k
C330
68p
C331
0.01
Q36
2SC4116
R264
2.7k
R219
22k
C333
0.001
C332
1
TONE
REM
CENC2
CENC1
CENC0
R267 22k
R268 56k
R269 180k
R286 1k
R312
3.9k
R266
3.9k
R270
47k
C334
0.0082
R271
47k
IC5
NJM12904V
R256 100k
SCK
OSDA
5V
5V
47k
C336
820p
R274
47k
Q37
2SC4116
R273
4.7k
TENC
R275
27k
C337
0.47
Q38
DTC144EU
XTXD
XRXD
ATRD
NTXD
NRXD
CIRQ
ARTM
DIM
R303
100k
CENC2
CENC1
CENC0
AFCL
ARDT
AMSK
ADIN
APST
PMFM
ESDA
ESCL
PA
R149
10k
RSSI
LVIN
BATV
UNLK
CDEC
SDEC
BEEP
SENC
PWON
IGSW
DDST
POSW
NOIS
OPT3
OPT2
OPT1
MMUT
RMUT
BUSY
HANG
PTTO
KR0
KR1
KR2
C345 0.1
OSDA
DAST
PGO2
PGO1
PGI3
PGI2
PGI1
LINH
LCS
LCK
LSO
PLST
C151 47p
TXC
TMUT
NWC
DDSD
DDAC
SO
SI
SCK
CCS
5
6
7
8
4
3
2
1
PMFM
R180
5.6k
C240
0.022
C241
0.001
R179
33k
IC15
TC4W53FU
+
-
14
12
13
IC21d
NJM12902V
NWC
C244
56p
C243
270p
Q22
DTC144EU
R182
68k
C242
0.0012
R181
68k
R185
33k
C246
330p
R186
39k
R189
27k
R187
56k
TONE
CTCS
-
+
2
3
1
IC21a
NJM12902V
C296
0.1
R190
4.7
VAG
C362 0.1
R304 56k
C386 0.1
R318 12k
C200 0.1
C201 0.1
C202 0.1
R147
100k
R322
100k
1
3
5
2
4
R193
100k
C249
470p
R191
220k
R192 220k
C250 0.1
C359
0.1
C351
VCC
CPU5V
R8V
T8V
5V
8V
0.047
R196
22k
R195
1k
C251
0.1
C402
0.47
D30
MA2S111
R194
2.2k
AFON
SIG
AFONO
CPU5V
AFON
D31
DAN222
C253
0.1
VCC
IC18
TA75S01F
4
3
5
2
1
C255
220
R198
10k
C256
470
R199
10k
C254 0.001
J4
R188
18k
H
G
C252
0.1
R197
10k
J5
C257 47p
D23
DA221
C269
0.001
Q25
2SD1664
R203
4.7k
R202
4.7k
C272
2.2
Q29
DTC144EU
TMUT
D24
DA221
C270
0.001
Q26
2SD1664
C271
2.2
TXC
R204
4.7k
R205
4.7k
Q30
DTC144EU
6
5
4
1
2
3
Q27
2SB1132
Q28
XP6501
R156
4.7k
R239 4.7k
R150 100k
C273
5V
VCC
0.001
C274
4.7
C266
10
C262
0.1
O
I
G
IC9
TA7808F
C261
0.1
C265
220
R200
10k
R201
470
Q23
2SJ377
HV
5V
VOC
8V
C260 47p
C259 0.001
C258 470
D22 DSA3A1
EP3
EP3
W2
C268
10
C264
0.1
G
O
I
IC10
AN78L05M
C263
0.1
R298
100k
R297
300k
J6
C293 0.001
VCC
DIM
HORN
GND
PAAF
GND
DISC
GND
IN
GND
PTT
C292 47p
C290 0.001
C291 0.001
C294 0.001
Q48
DTC144EU
PA
VCC
VCC
CPU5V
Q33
DTC144EU
DIM
Q32
DTC144EU
HORNO
DET
DET
EPTT
R228
100k
Q31
2SJ144
R227
1M
C295
10
C287
CPU5V
5V
R8V
8V
VCC
0.001
F
MOD
D
E
SIG
SIGOUT
D26
MA2S111
R229
1M
R226
100k
HV
HV
P1
+
-
CHASSIS
SP1
AFO
Q24
DTC144EU
PWR
CPU5
L36
4.7
µ
C352
22
C347
470
C373
0.001
GND
V+
4
11
C248
0.001
IC21
NJM12902V
8V
5V
T8V
R8V
ANT
VCC
8V
ANT
5V
T8V
R8V
VCC
8V
ANT
5V
T8V
R8V
VCC
CPU5
R112
10k
R128
47k
C184
0.1
LINH
Q43
DTC144EU
C173
4.7
C179
470p
C279
0.1
R217
27k
C278 0.1
R250
120k
R265
39k
C338
0.01
Q40
DTC144EU
Q39
DTC363EK
IC8
LA4425A
R224 47
C289 0.1
R225 10k
C288 0.1
R223 1k
MAIN UNIT (2)
R240
100k
C315
0.022
VAG
C310
0.1
R319
47k
C282
0.1
C280
4.7
C281
470p
R257
470k
C335
0.047
R148
100k
PLRS
VCC
ANT
CHASSIS
J1
R159
10k
R287
10k
to
OPC-617
2.5V
4.1Vp-p
(3.579MHz)
16mVrmS
1.7Vp-p
(2/5 TONE)
TX:0.5V
RX:1.1V
2.9Vp-P
(19.66MHz)
1.8V
0.6Vp-p
(CTCSS)
4.9V
(DTCS)
5.0V
(AFON)
TX:8.0V
RX:0V
TX:0V
RX:8.0V
5.0V
8.0V
13.1V
5.0V
4.5V
(PWR ON)
MEASUREMENT CONDITIONS
VOLTMETER
Amplitude(Oscilloscope):100MHz
Frequency:440MHz
Transmission:25W
11 - 3