Block Diagram - Icom IC-F24 Service Manual

SECTION 10

BLOCK DIAGRAM

LVIN
X2:
CR-783
15.3 MHz
BAL
TCXO
REF
Q19: IC4:
2SC4116 MB15A02
PLL
X3
IC
FM IF IC
45.9 MHz
BPF
RSSI NOIS
SQL IN
DET
LVA, T1, T2
MOD
D/A
DET
OPTION
IC8:
M62363FP
CTCSS/DTCS DEC
IC7:
NJM12904
DET
LPF
IC5:
NJM12902
LPF
IC5:
NJM12902
OPTION
CENC0-2
LPF
CONNECTOR
Q27: S4:
UNR9213J TP70TF5163
SIGO BEEPO DUSE FIL CH
J4: AXN330C038
SW SELECT
BUSY AFONO
IC15:
BR24L16FV
EEPROM
PTTO
PTTI
D28:
MA2S077
MCIN DISC
CSFT SHIFT
SW
MCOT DET
S5V
Q18:
Q17:
2SK880
2SC4116
Q14: 2SC4226
RIPPLE D16: HVC350B
BUFF
FIL
D22:
HVC350B
RX VCO
LV
ADJ
LV
LOOP
FIL
D21:
HVC350B TX VCO
LV
ADJ
Q13:
2SC4226
D17: HVC350B
LPF
FM D18:
MOD MA368
IC1: TA31136FN
FI2
Q26:
UNR9213J
X1
CERAMIC
W/N
BPF
SW
CDBC450CX24
ALFYM450F=K
450 kHz
NWC
IC6: Q34:
NJM13403 2SK3019
RX
HPF
MUTE
DISC
CONNECTOR
IC6:
NJM13403
CTCSS/DTCS
LPF
TONE
IC5:
NJM12902
SENC0-3
LPF
IC7:
NJM12902
TEMP
AMP
R131
CDEC
ERTJ0EP473J
SDEC
CPU
F1
IC13: HD6433687A91FP
F2
IC14:
BD5242
RES
RESET
CPU5
X3
CR-764 Q32: XP4216
19. 6608 MHz
RLED
LED
TLED CTRL
CL-165HR
10 - 1
Q15: XP1214
Q16: UNR9213J
R5V
VCO
SW
Q12: Q10: D14, D15:
2SC5107 2SC5107 MA2S077
TX/RX
BUFF BUFF
SW
Q11:
2SC5107
BUFF LPF
353. 65 MHz-473. 65 MHz
Q4: FI1: D10:
2SC4215 FL-335
Q3: HVC350B
46. 35 MHz 3SK299
IF XTAL
BPF
AMP BPF
MIXER
T2
IC10:
CD4066
IC6:
RMUT NJM13403
HPF
IC6:
NJM13403
MMUT
ANALOG PTT
AMP
SW
RMUT
PTT PTTI
OPTION CONNECTOR
T5V
Q21:
2SA1577
T5C
T5 T5V
REG
R5C
Q23: 2SB1132
Q24: XP6501 Q22:
Q25: UNR9113J 2SA1577
S5C
S5 R5 R5V
REG REG
VCC
S5V
+5V
+5
REG
IC9:
NJM2870
G
R
DS1:
Q7:
Q9: Q5: Q8:
RD07MVS1
2SC5107 2SC3356 RD01MUS1
YGR PRE DRIVE PWR
LPF
AMP DRIVE AMP AMP
Q1:
IC2:
2SK1829
TA75S01F
RSSI GATE APC
CTRL AMP T2
D9: D7: HVC350B D3: HVC350B
HVC350B D8: HVC350B D4: HVC350B
RF
BPF BPF BPF
AMP
Q2:
3SK293
T1
OPTION CONNECTOR
MCOT MCIN
Q35:
2SK3019
MIC
MUTE
Q28:
UNR911HJ
Q28: UNR911HJ
PTT
DET
PTT
DET
PTT PTTI
OPTION CONNECTOR
IC12:
TA7368F
AF VOL
R226
TP76N00N
AF
AMP
Q30: 2SA2048
Q31: XP6501
AFON
PWR
CTRL
AFONO
Q29: UNR9210J
D26: RB876W
CLO
CLI CLONE
BUFF
F1 2
VCC 1 2
ERBFE3R00U
400-520 MHz
D2: 1SV307
D5: MA2S077
ANT
LPF
SW
PWR D1: RB886G
D30: RB886G
DET
Q6:
UNR9113J
MUTE
SW
TMUT
J2
HSJ1122-010010
MC1
SKP-4538
PTT
S1
HSJ1456-010320
J3
J1
SP1
1
2
BM02B-ASRS-TF
NOTES :
Voltage line
Contorol line
Common line
TX line
RX line
DATA lime