Main Unit - Icom IC-F620 Service Manual

MAIN UNIT (1)

8V
5V
VCC
J1
SCK
OPV1 R138 47k
SI
OPV2 R139 47k
SO
OPV3 R140 47k
CIRQ
GND
CCS
OPT3
REM
OPT2
DISC
to
OPT1
Optional
DET
unit
SIG
RMUT
MDWN
BEPO
BUSY
AFON
AUX
MMUT
MCIN
VCC
MCOT
5V
PTTO
GND
PTTI
FRONT UNIT
J2 J2
GND
8V GND
8V
PWR
5V PWR
5V
LINH
KR0 LINH
J1 KR0
LCS
8V KR1 LCS
KR1
CL0
LCK
AFO KR2 LCK
KR2
to
PTT
MIC LSO
MICE FSW LSO
JACK
FSW
MIC
AFVI
GND HORN AFVI
HORN
CLI
CLI
CLO CLI
CLO
GND
PTT GND
PTT
MIC
AFO MIC
AFO
R316
R143
100k
100k
J9
XTXD
5V
XRTS
XRXD
RES
XCTS
GND
MDI
GND
VCC
Q42
DTC144EU
J8
NTXD
8V
IGSW
INRXD
PGI2
PGI1
PGO1
PGI3
GND
PGO2
11 - 2
C366 C378
0.1 0.001
R108
22k
BAL
IC11
R107 C161 X2
TC75S51F
SCK
1 5 47k 100p CR-671A
APST 4
VAG 3
SI
2 C372
AMSK R307
2.2
22k
SO
AFCL
R305
CIRQ
220k
C156
47p
CCS 1.2Vp-p
(15.3MHz)
OPT3
OPT2 IC4
R109
SA7026DH
DISC 1k
OPT1 UNLK 20
PON
DET PLST 19
STROBE
SIGOUT SO 18
DATA
RMUT SCK 17
CLOCK
16
REFIN+
BEPO LOCK:5.0V 15
REFIN-
UNLK:0V
BUSY 14
RSET
AFONO 13
VDDCP
12
AUXIN
MMUT 11
PHA
MCIN
MCOT
PTTO
C
5.1V
REM
POSW
LINH
LCS 5.8V
LSCK
Q11
KR0 2SC5107
KR1
KR2
FSW
Q12
2SC5107
3.0V
C304 C306
10p 4p
TX:0V
RX:5.0V
Q34
R284
2SC4116
1k
MICI
800mVrms
AFO
WIDE:0V
NAR:5.0V
LSO
AFVI
HORNO
CLO
CLI
HANG
R155
100k
FI1
FL-313 [USA], [GEN]
R33
FL-335 [EUR]
150
C58
Q44 R154
0.001
100k
DTC144EU IGSW
Q4
NTXD
2SC4215
NRXD
D36
PGI1
DAN222
D35
DAN222
PGI2
MEASUREMENT CONDITIONS
VOLTMETER
D37 Amplitude(Oscilloscope):100MHz
PGI3
DAN222 Frequency:440MHz
Transmission:25W
R158 10k PGO1
R157 10k PGO2
8V
5V
VCC
R209
NTCG20
5.0V Q18
R292
2SK880
8.2k
R89
R90
10k
CP1 100k
Q19
C145
2SC4215
R99 R92 47p
1k 120k
L27
1.8µ
R95
470
C150 R97
47p 10
1
LOOK
C140
2
TEST 0.1
L28
3
VDD 1.8µ
4
GND
5
RFIN+
6
L32
RFIN-
R86
7 18n[L]
GNDCP 220k
15n[M],[H]
8
PHP
9
PHI
10
GNDCP
T8V
TX:5.4V
RX:0V
C108
TX:2.1V
0.01
5.5V
RX:2.2V
TX:6.5V C400
RX:0V 0.5p
C102 R71
12p 33
C93
C98
Q10 C100 D14
Q8
4p[25W]
2p[25W]
2SC5107 5p MA77 2SC3356
3.5p[45W]
5p[45W]
Q9
D15 2SC5107
TX:0V
MA77
RX:2.9V
C103
2p
TX:2.9V
RX:0V
T8V
R8V
5V
NWC
R40 TX:0V
4.9V
1.5k RX:5.4V
IC1
C61
TA31136FN
100p
FI2 1 16
OSCIN MIXIN
ALFYM450F=K
2 15
OSCOUT GND
3 14
O I MIXOUT N-REC
4 13
VCC N-DET
5 12
IFIN RSSI
6 11
DEC IFOUT
7 10
FILOUT QUAD
8 9
FILIN AFOUT
R44 R43
C371
47k 470
0.01
R45
33k
R42
47k
Q6
DTA144EU
R8V
TX:0V C49 L38
RX:7.3V
5p 18n
C41 C40
22p 0.75p
Q3
TX:0V
3SK272
RX:0.8V
R32
100
R22
10k
R24
10k
TX:0V
RX:1.2V
Q17
6.9V
2SC4116
R84 R83
3.3k 3.3k
C123
Q13
12p[L] R82
2SC4226
8p[M],[H] 4.7
C118
0.5p
TX:3.0V
RX:0V
R80
1k
Q15
R85
XP1214
3.3k
5 1
R79
C126 R81
3.3k
6p 2
10
4 3
Q14 C113
0.5p
2SC4226
R78
560
TX:3.0V
RX:0V
IC3
RA30H4047M[L]
RA30H4452M[M]-25W,[H]
RA45H4452M[M]-45W
6 5
L18
R310 L16
18n[L]
C92 18[25W] LA-232[25W]
5p 5.6[45W] 15n[M],[H] LA-382[45W]
FI5
NFM60R-
20T152
[45W]
FI4 FI3
NFM60R- NFM60R-
20T152 20T152
R2
100
C16
L1
C357 2p[L]
LA-232[25W]
47p[45W] 1p[M],[H] LA-382[45W]
C14 L3 L2
47p[25W] LA-382 LA-232
C62
82p
Q5
2SC4116
C79
TX:0V
0.22[L] D32
RX:7.3V
0.1[M],[H] MA2S111
TX:0V R56
TX:3.6V
RX:8.0V 150k
RX:0V
R206
R58
470k
47[L]
2
100[M],[H] 3
4
Q1 1
2SK1829
5
IC2
TC75S51F
C33
47p
C22 C25
0.75p 2.5p C19 0.001
Q2
C30
3SK293
5p
R14 R12
10k 10k
BUS LINE1
8V
5V
VCC
T8V
R8V
ANT
Q16
DTC144EU
TXC
T8V
D3
XB15A407[45W]
D2
UM9401F[25W]
HV
MAIN
T8V
UNIT
R8V
(2)
5V
Q51
R323
2SC4116[45W] 100k
[45W]
R8V
5V
R55
2.2k[L]
1k[M],[H]
TX:0V
RX:5.0V
R54
10k
R57 C78
10k 0.001
L6
15n
BUS LINE2