Icom IC-F51 - Manual (Page 33)

SECTION 10 BLOCK DIAGRAM
10 - 1
136–174MHz
LPF
TMUT
BATTERY_1
BT1
1
F1 VCC
2
Q26:
TCP6103
Q403: 2SC4116
Q404: RSR025N03
Q405: RSR025N03
W406: DTC144EU
Q401: 2SB1132
Q402: XP6501
IC406:
TC7W66FK
D401: MA2S111
D402: MA2S111 Q407: DTA144EU
Q409: XP4111
DS402_403
SML–310MT
AMP
IC407:
NJM12904
LPF
IC403:
NJM12902
AF
MUTE
IC406:
TC7W66FK
SIGNAL
AFO
X3
CR–746
4.00 MHz
1/4
R5
REG
IC410:
BU4094
RES
EEPROM
CPU5
+5V
+5V
IC12:
BU4094
T5
REG
S5
REG
+5
REG
Q23: 2SB1132
Q24: XP6501
Q25: DTA144EU
SCRM
BLER
T5C
T5V
R5V
S5V
+5V
R5C
S5C
VCC
BATT
SELECT
D404:
MA2S077
SHIFT
SW EXPANDER
EXPANDER
RESET
IC9:
NJM2870
IC408:
BD5242G
IC409:
24LC64T
ANALOG
SW
AMP
IC10:
AK2346
COMPRESSOR
HPF
BPF
LPF
IC7:
EW–460
CSFT
X401
CR–764
19.6608 MHz
CR–765
3.6864 MHz
X4
R190
TEMP SDEC
LIMIT
AMP
MSK
DE–Modulator MSK
Modulator
IC5:
NJM12902
IC403:
NJM12902
IC403:
NJM12902
Q408:
DTC144EU
CTCSS/DTCS DEC
CDEC
CDEC
CDCS
DUSE
SENC0–3
CENC0–2
IC5:
NJM12902
EXPANDER
SCRM
BLER
LPF AMP
LPF
DET
D/A
CTCSS/DTCS
IC11:
TC4W53FU
IC6:
M62363FP
MOD
DET
LPF
LPF
LPF
FIL
SW
AMP +5V
TONE
LPF
IC5:
NJM12902
FM/PM
SW
AMP IC15:
TC3W03FU
Q21:
2SA1577
Q22:
2SA1577
IC14:
FX214LG
IC13:
BU4066
DS406:
CL–165HR
FRONT UNIT
MAIN UNIT
G
R
DS404_405
SML–A12MT
LED
CTRL
MIC
MUTE
PTT
DET
IC405:
TA7368F
PWR
CTRL
AF
AMP
AF VOL
BEEP TONE
SPON SPON
SP1
MC1
PTT
CONNECTOR
AFO
AFO
MIC
PTT
VCC
RESET
OPTV
RESET
OPTV
LCD
NOTES :
Contorol line
Common line
TX line
RX line
DATA lime
Voltage line
CLI CLO
ANT
SW
PWR
DET
PWR
AMP
APC
AMP MUTE
SW
POWER
SW
AF
MUTE
DRIVE
AMP
D2:
D25:
MA2S111
RB706F
Q7:
RD07MVS1
T2
IC2:
TA75S01F
Q8:
RD01MUS1
PRE
DRIVE
GATE
CTRL
D8:
HVC375B
RF
AMP
BPF BPF BPF
T2
T2 T2
BPF
1st Mixer
RSSI
T1
T1
Q9:
2SC5110
Q1:
2SK1829
D4:
HVC385B D9:
HVC350B D10:
HVC350B
1st LO=
182.35 MHz–220.35 MHz
1st IF=
46.35 MHz
XTAL
BPF
Q3:
3SK299
D14,D15:
MA2S077 Q10:
2SC5107
Q11:
2SC5107
Q13:
2SC4226
Q12:
2SC5107
R5V
Q15: XP1214
Q16: DTC144EU
FI1:
FL–335
D16,17: HVC376B
BUFF
LVA
MOD
FM
MOD
LV
ADJ
RIPPLE
FIL
LOOP
FIL
IC4:
MB15A02
LV
ADJ
D18:
1SV239
D22:
HVC375B
FAST
SW
BUFF
LVIN
LPF
CDBC450CX24
RX VCO
TX VCO
Q14: 2SC4226
D19,20: HVC376B
Q17:
2SC4116
S5V
Q18:
2SK880
X2
CR–763
15.3 MHz
IC16:
NJM12904
Q19:
2SC4116
TCXO BUFF
X 3 PLL
IC
BPF
LVA, T1, T2
SQIN
2nd LO
=45.9 MHz
X1
DET
MOD
BAL
REF
LV
IC17:
TC4S66F D21:
HVC375B
IC16:
NJM12904
IF IC
NOIS
ALFYM450F=K
450 kHz
IC1:TA31136FN
FI2
RSSI
IF
AMP
Q4:
2SC4215
TX/RX
SW
BUFF
BUFF
BUFF
VCO
SW
ATT
Q2:
3SK293
CERAMIC
BPF
CPU
IC401: HD6432264F01TF
D2: 1SV307
D5: 1SV307