Icom IC-F4210D Service Manual page 34

SECTION 9 BLOCK DIAGRAM
X2
CR-892/CR-826
VCON
MAIN-A UNIT
MAIN-B UNIT
S5C PLL
IC
SSO
SCK
PLST
UNLK
IC55
TPA0211
IC58
TA75S01F
AF AFVO AFO
AMP
AMP
AFON
Q63:2SB1132
IC12
TA7368F Q64:DMC506010R
AFON
AF PWR
AMP CTRL VCC
J52 D51
Q81 CLO
CLI
CL CLONE
BUFF
MDET
J53
SP1
1
2
IC2
SQIN
BEEP
AFVO
REF
VCON
BUFF
BAL
MOD
J51 Q58
PTT XPTT
DET
MC51
ALC
AMP
AMP
Q59
AUTO_TX ATX
AMP
CTRL
Q15
2SC4116
15.3MHz
Q17
2SK880 S5V RIPPLE
TCXO
FIL
D11
LVIN
BUFF
LVA LV
ADJ
LOOP LV
FIL D14
LVA LV
ADJ
IC4
AK1541
LPF
D15
1SV309
FM
MOD
X3 BPF
MOD
Q26
2SC4116 45.9MHz
IF IC
IC3
FI3 D36:D37
X1
CERAMIC
SQIN RSSI NOIS W/N_D
BPF SW
JTBM450CX
450kHz
IC21
FI4
LTM450HW
AMP
CERAMIC
W/N_D
D38,D39 SW BPF
Q27
450kHz
DISC DET NWC
Q901
NWC
DET W/N SW
R89 R89
BUFF
VOL1 VOL1
DISC
BUFF
DAFO
VOL1
VOL1
VOL1
DMO
LPF
VOL1
LIMIT LINEAR
HPF AMP
CODEC
TX/RX
MOD
LINE W/N SW
CTRL
SW
VOXV
DET
9 - 1
Q11
LDTC114EE
Q13 2SC4226
D12 VCO R5V
SW
RX VCO
Q10 Q8 D5
2SC5107 2SC5107 D6
TX/RX
BUFF BUFF
TX VCO
Q14 2SC4226 Q9
D16 2SC5107
BUFF
Q12
Q95
LPF
VCO
RXC
SW
Q24 D33,D34 FI1 D31:D32
2SC5107 Q29 FL-442
IF A/D XTAL A/D 46.35MHz
AMP SW BPF SW
FI2 MIXER
FL-448
XTAL
BPF
ADS
Q28 IC5 FI5
2SC4116 NJM2711F
CERAMIC
DIF
BUFF AMP
BPF
AFON MCG1 S5C
RXC MDET NWC
TXC ATX PLSW
PWON MCG0 TMUT
ADS
SSO CLO
SCK CLI
PLST DAST
UNLK
D60
X51
CR-912
SHIFT
SW
19.6608MHz
CPU
CSFT
IC53 IC51
NJU7704F3
RES
RESET
T1
T2
LVA
CPUV
RORES
SSO,SSK,DAST
IC905 X900 Q900 DSIRQ
DMOSI
DMISO
TCXO SHIFT DCSFT DSCK
AMP
SW DSS
DPDN
DRES
12.288MHz
CLKIN
BCLKX1,BFSX1,BDX1,BDR1
DSP
IC903
IC901
BDR0
BFSR0
DIF BCLKR0
A/D
VREF
Q1
Q4 Q3 Q2
RD07MUS2B
2SC5107 2SC3356 RD01MUS1
PRE PRE PWR
DRIVE
DRIVE
SW AMP AMP AMP
Q21
2SK1829
353.65MHz-423.65MHz GATE RSSI
CTRL
403.65MHz-473.65MHz
D28 D28 Q22 D26
Q23 HVB350BYPTL HVB350BYPTL
3SK293
RF
BPF BPF BPF
AMP
T2
S54
CBI0 CBI1
CBI2 CBI3 CH
SELECT
IC52
ESCL R1EX24512ASAS0A
ESDA
EEPROM
DS51 POSWH
Q82:Q83 LNJ115W8PRA
G
RLED
LED
TLED CTRL
R
POWER
SW
S51
IPTT PWON
PUSH1
S52
P1
SIDE1
P2
PUSH1
SIDE2
PUSH1
S53
AF VOL
+3.3V LINE
FILTER
BDR0 BDX0 EN25Q40
FCS BCLKX0
FLASH
400-470MHz
450-520MHz
D3
D22
ANT
LPF
SW
D1
IC1 D2
TA75S01F
PWR
APC DET
AMP T1
D24
HVB350BYPTL
BPF
T1
Q71
Q86
S5C
S5 S5V
REG
Q72
IC54 Q87
RXC
R5 R5V
VCC +5V REG
REG
Q73
Q88
TXC
PWON T5 T5V
REG
IC65 +5V
BD9141MUV
VCC CPUV
DC-DC
3.3V
Q90
Q91
Q92
Q93 +3.3V +3.3V
D59 PWON REG
DVDD_3.3V
LINE
FILTER
LINE 3.3V_VDD
FILTER
LINE +3.3V_A
FILTER
:TPS62204
IC900
CVDD_1.6V
DC-DC
CPUV
1.6V