Icom IC-F2610 Service Manual page 33

SECTION 10 BLOCK DIAGRAM
IC7
M5282FP
VCC +8V
EXT SP
AF AF
AMP
SW
IC8
LA4425A Q7
DTC363EK
SP
PA
Q47 DTC144EU
PA
DIM DIM
SW
IC25 TC4W66FU
ACC CONNECTOR Q45 DTC144EU
IC25 TC4W66FU
VCC HORN HORN
SW
J4
MIC
VCC
DIM +5V
Q8 DTC114EU
HORN
GND
PAAF PA AF MCON
BUFF
GND SW
DISC IC9B
GND TA75W558FU
IN
GND PASP
PTT
DISC
EPTT
D51
Q506 IC504
2SK1069
DMOD
MOD
BUFF
SW
AMOD
MODS
FRONT UNIT
+5V
DS2-DS6 FY1112H
DS7,DS8, DS10, DS11 CL-170Y
IC1
DS1 DS13-DS16 CL-170Y
SED1526FOA
SWITCH X19 LCD BACK
LCD
DRIVER LIGHT
IC2
HD6433640A33H
X1
CR-567
SUB
AF VOL
CPU
+5V
R26
AFV
POWER SW
IC4 TC7W04F
Q2, Q3 DTA114EU
D3 MA111
CLONE DATA
HANG HANG I/F I/F
PTT
Q4, Q5 DTA114EU
+8V D4 MA111
CLON CLON
Microphone
AFO
MIC
DISC FI3
SFPC455H
AF OUT
N/W
BPF
SW
IC3
Q6 TA75W558FU
D501
DTC114EU
+5V DAN202U
Q515
Q501,Q502,Q510 DTC144EU
DTA144EU
AF N/W N/W
VCA HPF
MUTE
CTRL SW
Q61 2SC4116
Q5
+8V
2SC4116
AMUT NWC
X2
VCA
CDBC455CX16
HFSW SHIFT
AMP
SW
IC2a
+5V
TA75S588F
SW
CDEC
LPF
MIC OUT
Q503
MIC IN XP4601
IC22
µPC5023GR
+5V
16 14 12 5 6
HPF LIMIT
AMP MIX
SW AMP
AMP
IC21b
+5V
TA75W01FU
+5V
SIG OUT 4
BUFF
AMOD
DTMF DTMF
BEEP LINE
MIC
Q64 DTC144EU
AFO /NWC
N/W
SP SW
14
CENC 1
2
+5V 9
LPF
VCC Ref MOD
IC21A
IC5 AN8005M
TA75W01FU
5V VCC
REG
+8V
Q6-Q9 DTA143ZU
Q10, Q11 DTC114EC
LED
CTRL
IC3 SED1526FOA
Q1 2SC4081
D1 MA111
+5V CENC
RESET
IC501
LC7366NM
DTMF
D2
SQL MA111
FTXD
FRXD
GND
SP +8V
AFO
MIC
+8V
POSW
10 - 1
FI4 R8V 1st mixer
SFPC455E
N/W MCF
BPF BPF
BPF
SW
D502 Q2
FI1
DAN202U 3SK166
FL-264
R8V R8V
IF LO
FM IC
AMP AMP
Q4 Q3
IC1 2SK302 2SC4226
MC3372SVM
X1
CR-574
/NWC
NWC
NOISE VRX
VCO
+8V RSSI SW
IC502
Q65 2SK1829 TC7S66FU
Q62
N/W N/W N/W
DTC144EU
SW SW SW RX
VCO
Q23 2SC5110
D21, D22 1SV217
D46 IT365
IC503
SPLATTER
DMOD MOD
TA75S01F
TX
BUFF
7 8 VCO
Q516
2SC4081R
BEEP OUT
BUFF
VTX
VCO
SW
Q35
2SC4081R +20V +5V
IC13 TC4W66FU
IC12
Q30 FMS2A
MC145190F
Q31 FMW2
BUFF
Q32
VCA PSET
Q33 LOOP PLL
+5V FIL IC
BEEP
15 11
13
4
SPEED
D/A PLLT
UP
21
SW
IC5 Q25 DTC144EU
M62363FP Q26 DTA114EU
10
PCK
3 PDA
PSTB
Q505
22 +5V UNLK
DTC144EU
/NWC
LIMIT NOIS N/W
CTRL
AMP
Q9, Q10
2SC4081R
DCK NWC
DDA
DSTB
EPTT, RSSI
CDEC, DIM
HFSW, PASP
SP,HORN, PA
BEEP, MCON
MODS
Q504 CPU
2SK1069
IC20
HD64F3437F16
BUFF
X502
PBRC3.58A
DTMF
ENCODE
DATA
I/F
IC26 TC7W04FU
IC505 BU4066BCFV
Q50 DATA114EU
Q51 DTC114EU
Q507 DTC144EU
D37 1SS355 X4
9.8304MHz
CPU5V SHIFT
RESET
SW
IC19 S-80742SL
Q48 2SC4116
D503 EEPROM
D36 1SS355
MA77
IC27
X25650S8I
R8V
D4
UM9401F
RF TX/RX
BPF BPF BPF
ATT
AMP
SW
Q1
3SK166
T8V
IC2b
Q518 DTC114EU
D513 MA77
ATT
RSSI LPF
CONT
+20V
TUNE
T8V MT8V MT8V HV
BUFF
D17 MA77
D18 MA77
Q29 2SK1069
LO
TX/RX DRIVE PWR
BUFF
AMP
SW AMP AMP
Q22 DTC144YU
Q27 DTA144EU Q17
Q16 Q15
2SC5107
2SC3356 2SC4703
Q21 2SC5110
D19, D20
1SV217
+8V +8V
BUFF BUFF ATT
Q19 2SC5110
Q20
2SC5110
IC506 S-81250PG
Q508 2SK1829
Q509 DTC144EU
Q24 DTC114YU
Q28 DTA144EU
+18V +18V FVPP +12V
DC-DC CTRL
+8V
IC18 TC7W04FU
Q44 2SK1069
D31 HSU88 FVPC
D32 MA742
BUFF
D33 MA8160
Q18
2SC5110 R8V R8V +5V +5V
+5V CTRL
Q36 2SD1664
Q42 2SB1123
Q37 2SC4116 Q43 2SC4081
TCXO Ref MOD D27 DA204U VRX
D30 1SS355
X501
MT8V MT8V
+8
12.6MHZ
REG
Q38 2SD1664
IC16
Q39 DTC114YU
TA7808F
Q514
TMUT
D28 DA204U
VCC
+8V
THRM TEMP T8V T8V
CPU5V
C.P
Q40 2SD1664
Q41 2SC4116
D29 DA204U
VTX
VPP
VTX
REG CTRL BUS TMUT, VRX
PWON, FVPC
XTXD, XRTS
DATA OPTION BUS
XRXD, XCTS
OPTION CONNECTOR
J6
OPV SCK
SCK CCS BUSY OPT3 OPV2 SI
SI MMUT AFON OPV1 OPV3 SO
SO RMUT OPT1 OPV2 GND CIRQ
CIRQ AUX OPT2 OPV3 OPT3 CCS
OPT2
SIGNALING OPTION BUS OPT1 AFOUT
SIG OUT DISC
RMUT
BUSY BEEP OUT
AUX AF ON
MIC IN MMUT
MIC OUT VCC
PTTI PTT OUT CPU5V
PTTO PTT IN GND
OPS1
OPS2
MAIN UNIT
EEPROM
IC1
MC3372SVM
400–520 MHz
FOR
LPF LPF
REV
POW
DET
VCC
APC
CTRL
IC10
IC11
NJM2904V
SC-1323
PSET
APCV
Q12 2SJ377
Q14 DTC144EU
D509 DAN202U W4
POWER HV
SW
PWON
+5
REG
IC17
AN78L05M
HV
VCC CPU5V
COMMON LINE
LINE
RX LINE
TX LINE
DATA BUS LINE