Icom IC-F50V Service Manual page 37

SECTION 9 BLOCK DIAGRAM
+5V
Q18
TEMP 2SK880
LVIN
BUFF
15.3MHz
IC16 X2
NJM12904 CR-783
BAL
LOOP
BUFF TCXO
REF FIL
Q19
IC4
KTC4075
MB15A02
PLL
X3 LPF
IC
45.9MHz IF IC
BPF
X1
CERAMIC
SQIN CDBKB450KCAY24
CFWKA450KFFA
DET
450KHz
LVA,T1,T2
MOD
D/A DET
AMP
IC6
IC11
M62363FP
TC4W53FU
FM/PM
SW
CTCSS/DTCS
IC5
MSK
NJM12904
Modu
MOD
LPF
TONE
CTCSS/DTCS DEC
Q6
XP4601
DET
LPF
IC403
NJM12902
SENC0-3
LPF
IC403
NJM12902
CDCS CENC0-2
LPF
Q408
KRC404E
FIL DUSE
SW
9 - 1
S5V
Q17
KTC4075
Q14 2SC4226
RIPPLE D19,20:HVC376B
FIL D22
HVC375B RX VCO
LV
ADJ
LV
IC17 D21
TC4S66F HVC375B TX VCO
FAST LV
SW ADJ
Q13
2SC4226
D16,17:HVC376B
IC16
NJM12904
FM D18
BUFF
MOD 1SV239
IC1:TA31136FN
FI2
BPF RSSI NOIS
IC5
NJM12904
BUFF
EX-
LPF
PANDER
SCRM
HPF
BLER
COM-
LIMIT
LPF
AMP PRESSOR
MSK
IC10
BPF DE-Modu
AK2346
lator lator
X4
IC7
CR-765 EW-460
3.6864MHz
CDEC BATT
LPF
SELECT
D404
M A2S077
19.6608MHz CSFT
CR-764
SHIFT
X401
SW
CPU
IC401
Q15:XP1214
MAIN UNIT
Q16:KRC404E
VCO
R5V
SW
Q12 Q10 D14,D15
2SC5107 2SC5107 MA2S077
TX/RX
BUFF BUFF
SW
Q11
2SC5107
BUFF LPF
182.35MHz-220.35MHz
Q4 FI1 D9
D10
2SC4215 FL-335 Q3 HVC350B HVC350B
46.35MHz 3SK324
IF XTAL
BPF BPF
AMP BPF
MIXER
T2
SIGNAL
IC18
ISD4002-120 IC19
S-812C33AMC
PLAY/
+3.3 +5V
AMP
REC REG
AMP
Q21
KTA2015
T5C
T5 T5V
R5C REG
Q 23:KTA1664Y
Q 24:KTC811U Q22
Q25:KRA304E KTA2015
S5C
S5 R5 R5V
VCC REG REG
IC12
CD4094 S5V
EXPAN +5 +5V
REG
DER
IC9
NJM2870
I C410
CD4094
EXPAN
DER
VOXV
I C408
BD5242G
FRONT UNIT
RES
RESET
CPU5
I C409
HN58X24256
EEPROM
Q8 Q7 D1
Q9
2SC5110 RD01MUS1 RD07MVS2 RB706F
PRE PWR PWR
DRIVE
DRIVE
AMP AMP
DET
Q1
IC2
2SK1829
TA75S01F
RSSI GATE APC
CTRL AMP T2
D4 D8
HVC375B HVC375B
RF
BPF BPF
AMP
Q2
3SK293 VCC
T1
I C406 I C403
TC7W66FK NJM12902
AF VOL
AF
LPF
MUTE
IC405
TDA8547TS
AF
Q415 AMP
2SC4213B
BEEP
MAX
MUTE
PWR
CTRL
Q 401:RSQ035P03TR
Q402:KTC811U
IC406
TC7W66FK
MIC
AMP
MUTE
I C407
NJM12904
VOX
DET
D401:MA2S111
IC411:TC75S51FU D402:MA2S111
PTT
DET
D S402_403
SML-310MT
D S404_405
SML-A12MT
G
LED
CTRL
R Q407:KRA304E
Q409:XP4111
DS406
CL-165HR
136-174MHz
D2:1SV307
D5:1SV307
ANT
LPF
SW
D25 Q30:KTC4075
MA2S111 Q31:KTA1664Y
MUTE VIB
SW REG
MF1
TMUT VIB
Q26
RSQ035P03
F1
1 2
POWER
SW
IC405
TDA8547TS
AF SP1
AMP
Q406:KRC404E
SP/ESP Q414:KRC404E
SW
MC1
SPON
PTT
CONNECTOR
AFO
MIC
PTT
VCC
RESET
OPTV
CLI CL O
LCD
Explanatory notes
CONTROL LIN E
COMMON LINE
TX LIN E
RX LINE
DATA LINE