Block Diagram - Icom IC-F50 Service Manual

SECTION 10

BLOCK DIAGRAM

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