Block Diagram - Icom IC-F70DT Service Manual

SECTION 10

BLOCK DIAGRAM

FRONT UNIT
LCD
FSCL, FSDA, KS0-KS3, KR0-KR3
4KEY
EXPANDER EXPANDER
LED
&10KEY
IC1
IC2 DS101,DS102,
M62320FP
M62320FP DS106,DS107
LN1371G×4
VCC
LED
DS108-DS113
RX
Q202
SW
2SB1132
SP1
AF AF
Q209,Q210 AMP MUTE
RSR025N03×2
IC201
TA7368F
IC205
AF
TC4S66F
MUTE
IC203 IC203
IC204
NJM12902V NJM12902V
TC4S66F
MC1
MIC MIC MIC
MUTE AMP AMP
EM-140
P1
PTT
MIC
XTXD
XRXD
RESET
DET
VCC
SP
9pin
ENCORDER
CB10-13
VOL
SQL
MAIN UNIT
S5V
RIPPLE
FIL
Q3
IC2 IC1
2SC4116
NJM12902V X3 LMX2352TM
BAL CR-796
PLL
LOOP
AMP
REF IC FIL
15.3MHz
Q14
MOD
2SC4215
TX 272MHz-348MHz
X3
RX 364.7MHz-440.7MHz
45.9MHz
BPF
FM IF IC
SQIN
X2
CDBC450CX24
W/N SW
D13
DAN235E
IC303
M62364FP
MOD
AF_ON
BAL
BEEP
VR
SIGNAL
AFOUT DAST
SCK
SC
REF
MIC
MIX
DASW
IC12
IC302
NJM12902V
BU4053BCFV
DIG/ANA
DET
DISC
MIC
AUDIO
PROCESSOR
IC301
AK2346
X301
CR-799
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
DATA LINE
Q4
2SC4226
Q10
Q6 D9, D10 Q11
RX-VCO
2SC5107
MA2S077×2 2SC5110
2SC5107
Q20
TX/RX YGR
2SC4226
BUFF BUFF
SW AMP
RX-VCO
Q5
2SC4226
Q9
2SC5107
TX-VCO
x2 LPF
BUFF
BPF
D15, D16
FI3
Q17
FL380 HVC350B×2
2SK1771 IC4
SPM5001
IF XTAL
BPF
IC3
AMP BPF
TA31136FN L30, L31, L33
46.35MHz
FI1 RSSI NOIS
CFWCA450F
CERAMIC IC310
BPF M62364FP
D14 T2
DAN235E
W/N SW D/A
FI2
CFWCA450G
CERAMIC
BPF
NWC
W/N SW
Q303
2SC4215 X300
Q15 DTA144EE
CR-800
Q16 DTC144EE
D-IF
AMP
DTMF
IC307
IC12 DECODE
HD64F2268TF
NJM12902V
IC300
DISC LC73872M SDEC
LPF AMP
IC12
IC2
NJM12902V
NJM12902V
CDEC
LPF AMP
IC2
NJM12902V
SENC
LPF LPF
2TONE
IC12 IC12
NJM12902V NJM12902V
CTCSS/DTCS CENC
LPF
IC12
NJM12902V
DAFO
SW
DTCS DUSE
SW
Q300
DTC144EE
AFOUT
RXAFIN
EXPOUT
FM
IC302 DASW
BU4053BCFV
MIC SW FM/PM
IC302
BU4053BCFV
PM
DAFO
DMO
DMI
Q12 Q13 D11 D12, D22
RD01MUS1 RD07MVS1 RB706F 1SV307×2
DRIVE PWR DET
LPF
AMP AMP PWR
D23
MA2S111
IC5
TA75S01F
TX MUTE TMUT
ALC CTRL
AMP
Q18 D18, D19 D20 MA2S077
3SK293 HVC375B×2 D21 MA2S728
RF
BPF LIMIT
AMP
Q306
2SA1577
R5V
SW
T1
T2
Q305
2SA1577
T5V
SW
+5V
IC308
HN58X24128FPI
CPU5
EEPROM
X5
CR-803
DSP UNIT (IC-F70DT/DS only)
CPU
IC10
12.288MHz
NJM2711F
X1
CR-798
BUFF
EXTAL
IC15
TC7MET541AFK
BUFF
SO SIO CCSI OUT
IC13
CSK0 PTTO PTTIN BUSY
TC7S04F
XTAL
BUFF
IC14
S-80928CNMC
3.3VC
RESET
CLKIN
MCLK
CODEC
IC9
AK4550VT
FI1
CFWC450E
CERAMIC
BPF
10 - 1
136-174MHz
ANTENNA
ANT
LPF
SW
Q304
2SB1132
S5V
SW
Q308 2SB1132
Q309 TPC6103
+5V
SW
IC311 Q309
TK11250CM TPC6103
BATTERY
+V5C POWER
REG SW
VCC
PWR
CPU
IC12
HD64F2239TE16
IC17
HN58X2416TI
EEPROM
IC1
XC6204B332M
+3VC REG
IC2
R1230R151F
+1.5VA
REG
DSP
IC7
IC3
TMS320VC5416GGU120
XC6204B332M
+3VD REG
IC5
IC8
+5V
NJM2711 AD7476ART
AMP A/D