Icom IC-F25

SECTION 10 BLOCK DIAGRAM
10 - 1
NOTES :
Contorol line
Common lin
e
TX line
RX lin
e
DATA lim
e
Voltage line
BAL
X2:
CR-783
15.3 MHz
Q19:
2SC4116
REF
X3
BPF
PLL
IC
IC4:
MB15A02
TCXO
LVIN
S5V
LOOP
FIL
RIPPLE
FIL
BUFF
45.9 MHz
SQL IN
DET
MOD
LVA, T1, T2
D/A
FM IF IC
IC8:
M62363FP
Q14: 2SC4226
D16: HVC350B
Q15: XP1214
Q16: UNR9213J
Q18:
2SK880
Q17:
2SC4116
D22:
HVC350B
D21:
HVC350B
LV
LV
ADJ
RX VCO
LPF
RSSI NOIS
ALFYM450F=K
CDBC450CX24
Q26:
UNR9213J
Q34:
2SK3019
IC6:
NJM13403
IC6:
NJM13403
DISC
CONNECTOR
DET
OPTION
CTCSS/DTCS DEC
IC7:
NJM12904
450 kHz
CERAMIC
BPF
FI2
X1
LVA
W/N
SW
VCO
SW
R5V
IC1: TA31136FN
HPF
RX
MUTE
CTCSS/DTCS
LPF
TONE
SENC0-3
TEMP
F1
T5C
R5C
VCC
S5C
F2
LPF
IC5:
NJM12902
IC10:
CD4066
ANALOG
SW
RMUT
RMUT
MMUT
T5V
IC6:
NJM13403
IC6:
NJM13403
Q35:
2SK3019
OPTION
MCO
T
CONNECTOR
MCIN
AMP
BEEP
HPF
MIC
MUTE
LV
ADJ
FM
MOD
TX VCO
D18:
MA368
D17: HVC350B
Q13:
2SC4226
Q12:
2SC5107
Q11:
2SC5107
Q10:
2SC5107
BUFF BUFF
TX/RX
SW
BUFF
D14, D15:
MA2S077
Q5:
2SC3356
Q8:
RD01MUS1
Q7:
RD07MVS1
IC2:
TA75S01F
D2: 1SV307
D5: MA2S077
Q6
:
UNR9113J
PRE
DRIVE
DRIVE
AMP
PWR
AMP
LPF
353. 65 MHz-473. 65 MHz
Q3:
3SK299
46. 35 MHz
MIXER
XTAL
BPF
IF
AMP
FI1:
FL-335
Q4:
2SC4215
DET
LPF
LPF
LPF
FIL
SW
CSFT
EEPROM
X3
CR-764
19. 6608 MHz
SHIFT
SW
CH
SELECT
AMP
IC7:
NJM12902
CDEC
SDEC
IC5:
NJM12902
IC5:
NJM12902
CENC0-2
Q27:
UNR9213J
S4:
TP70TF5163
BEEPO
SIGO
DUSE
AFONO
PTTO
PTTI
DISC
IC15:
BR24L16FV
D28:
MA2S077
OPTION
CONNECTOR
BUSY
CPU
IC13: HD6433687A91FP
R131
ERTJ0EP473J
IC14:
BD5242
IC9:
NJM2870
RES
CPU5
Q32: XP4216
RESET
LED
CTRL
G
R
DS1:
CL-165HR
LPF
ANT
SW
LPF
400-520 MHz
MUTE
SW
D1: RB886G
D30: RB886G
PWR
DET
TMU
T
J2
HSJ1122-010010
HSJ1456-010320
BM02B-ASRS-TF
MC
1
PTT
S1
SKP-4538
J3
J1
SP1
BT1
BATTERY_1
1
2
2
21VCC
F1
CLONE
BUFF
Q30: 2SA2048
Q31: XP6501
Q29: UNR9210J
D26: RB876W
PWR
CTRL
AFON
IC12:
TA7368F
AFONO
AF VO
L
R226
TP76N00N
AF
AMP
PTT
OPTION
PTTI
CONNECTOR
Q28: UNR911HJ
PTT
DET
APC
AMP
T2
D3: HVC350B
D4: HVC350B
D7: HVC350B
D8: HVC350B
BPFBPF
Q1:
2SK1829
GATE
CTR
L
RSSI
RF
AMP
Q2:
3SK293
T1
D9:
HVC350B
D10:
HVC350B
BPFBPF
T2
Q23: 2SB1132
Q24: XP6501
Q25: UNR9113J
S5
REG
+5
REG
Q21:
2SA1577
T5
REG
Q22:
2SA1577
R5
REG
T5V
R5V
S5V
+5V
BEEP0
CLO
CLI
ERBFE3R00U
PTT
OPTION
PTTI
CONNECTOR
Q28:
UNR911HJ
PTT
DET
PTT
NWC
DET
MCIN
MCO
T
RLED
TLED
J4: AXN330C038
Q9:
2SC5107
YGR
AMP